ENGINE CONTROL SYSTEM

B ENGINE

ENGINE CONTROL SYSTEM

SECTION EC EC

E
CONTENTS
INDEX FOR DTC ........................................................ 7 Fail-safe Chart ........................................................ 59 F
Alphabetical Index .................................................... 7 Basic Inspection ..................................................... 60
DTC No. Index ....................................................... 10 Symptom Matrix Chart ............................................ 65
PRECAUTIONS ........................................................ 13 Engine Control Component Parts Location ............ 69 G
Precautions for Supplemental Restraint System Circuit Diagram ....................................................... 75
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN- ECM Harness Connector Terminal Layout ............. 77
SIONER” ................................................................ 13 ECM Terminals and Reference Value ..................... 77
H
Precautions for Battery Service .............................. 13 CONSULT-II Function ............................................. 85
On Board Diagnostic (OBD) System of Engine ...... 13 Generic Scan Tool (GST) Function ......................... 96
Precaution .............................................................. 14 CONSULT-II Reference Value in Data Monitor ....... 99
Wiring Diagrams and Trouble Diagnosis ................ 16 Major Sensor Reference Graph in Data Monitor I
PREPARATION ......................................................... 17 Mode ..................................................................... 103
Special Service Tools ............................................. 17 TROUBLE DIAGNOSIS - SPECIFICATION VALUE. 105
Commercial Service Tools ...................................... 18 Description ............................................................ 105 J
ENGINE CONTROL SYSTEM .................................. 19 Testing Condition .................................................. 105
System Diagram ..................................................... 19 Inspection Procedure ............................................ 105
Vacuum Hose Drawing ........................................... 20 Diagnostic Procedure ........................................... 106
K
System Chart ......................................................... 21 TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
Multiport Fuel Injection (MFI) System .................... 21 DENT ....................................................................... 109
Electronic Ignition (EI) System ............................... 23 Description ............................................................ 109
Air Conditioning Cut Control ................................... 24 Diagnostic Procedure ........................................... 109 L
Fuel Cut Control (at No Load and High Engine POWER SUPPLY CIRCUIT FOR ECM ................... 110
Speed) .................................................................... 25 Wiring Diagram (LHD Models) .............................. 110
CAN communication .............................................. 25 Wiring Diagram (RHD Models) ............................. 114 M
BASIC SERVICE PROCEDURE .............................. 26 Diagnostic Procedure ........................................... 117
Idle Speed and Ignition Timing Check .................... 26 DTC U1000, U1001 CAN COMMUNICATION LINE. 121
Accelerator Pedal Released Position Learning ...... 27 Description ............................................................ 121
Throttle Valve Closed Position Learning ................ 27 On Board Diagnosis Logic .................................... 121
Idle Air Volume Learning ........................................ 27 DTC Confirmation Procedure ............................... 121
Fuel Pressure Check .............................................. 29 Wiring Diagram ..................................................... 122
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 32 Diagnostic Procedure ........................................... 123
Introduction ............................................................ 32 DTC P0011, P0021 IVT CONTROL ........................ 124
Two Trip Detection Logic ........................................ 32 Description ............................................................ 124
Emission-related Diagnostic Information ................ 33 CONSULT-II Reference Value in Data Monitor Mode
NATS (Nissan Anti-theft System) ........................... 45 . 124
Malfunction Indicator (MI) ....................................... 45 On Board Diagnosis Logic .................................... 125
OBD System Operation Chart ................................ 49 DTC Confirmation Procedure ............................... 125
TROUBLE DIAGNOSIS ............................................ 54 Diagnostic Procedure ........................................... 126
Trouble Diagnosis Introduction ............................... 54 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER. 127
DTC Inspection Priority Chart ................................ 58 Description ............................................................ 127

EC-1
 CONSULT-II Reference Value in Data Monitor Mode On Board Diagnosis Logic .................................... 169
. 127 DTC Confirmation Procedure ................................ 170
On Board Diagnosis Logic .................................... 127 Overall Function Check ......................................... 171
DTC Confirmation Procedure ............................... 128 Wiring Diagram ..................................................... 172
Wiring Diagram ..................................................... 129 Diagnostic Procedure ............................................ 175
Diagnostic Procedure ........................................... 132 Component Inspection .......................................... 178
Component Inspection .......................................... 134 Removal and Installation ....................................... 179
Removal and Installation ...................................... 134 DTC P0171, P0174 FUEL INJECTION SYSTEM
DTC P0102, P0103 MAF SENSOR ......................... 135 FUNCTION .............................................................. 180
Component Description ........................................ 135 On Board Diagnosis Logic .................................... 180
CONSULT-II Reference Value in Data Monitor Mode DTC Confirmation Procedure ................................ 180
. 135 Wiring Diagram ..................................................... 182
On Board Diagnosis Logic .................................... 135 Diagnostic Procedure ............................................ 184
DTC Confirmation Procedure ............................... 136 DTC P0172, P0175 FUEL INJECTION SYSTEM
Wiring Diagram (LHD Models) .............................. 137 FUNCTION .............................................................. 189
Wiring Diagram (RHD Models) ............................. 139 On Board Diagnosis Logic .................................... 189
Diagnostic Procedure ........................................... 140 DTC Confirmation Procedure ................................ 189
Component Inspection .......................................... 143 Wiring Diagram ..................................................... 191
Removal and Installation ...................................... 143 Diagnostic Procedure ............................................ 193
DTC P0112, P0113 IAT SENSOR ........................... 144 DTC P0222, P0223 TP SENSOR ............................ 197
Component Description ........................................ 144 Component Description ........................................ 197
On Board Diagnosis Logic .................................... 144 CONSULT-II Reference Value in Data Monitor Mode
DTC Confirmation Procedure ............................... 144 .197
Wiring Diagram ..................................................... 146 On Board Diagnosis Logic .................................... 197
Diagnostic Procedure ........................................... 147 DTC Confirmation Procedure ................................ 198
Component Inspection .......................................... 148 Wiring Diagram ..................................................... 199
Removal and Installation ...................................... 148 Diagnostic Procedure ............................................ 200
DTC P0117, P0118 ECT SENSOR .......................... 149 Component Inspection .......................................... 202
Component Description ........................................ 149 Removal and Installation ....................................... 202
On Board Diagnosis Logic .................................... 149 DTC P0300 - P0306 MULTIPLE CYLINDER MIS-
DTC Confirmation Procedure ............................... 150 FIRE, NO. 1 - 6 CYLINDER MISFIRE ..................... 203
Wiring Diagram ..................................................... 151 On Board Diagnosis Logic .................................... 203
Diagnostic Procedure ........................................... 152 DTC Confirmation Procedure ................................ 203
Component Inspection .......................................... 153 Diagnostic Procedure ............................................ 204
Removal and Installation ...................................... 153 DTC P0327, P0328 KS ............................................ 210
DTC P0122, P0123 TP SENSOR ............................ 154 Component Description ........................................ 210
Component Description ........................................ 154 On Board Diagnosis Logic .................................... 210
CONSULT-II Reference Value in Data Monitor Mode DTC Confirmation Procedure ................................ 210
. 154 Wiring Diagram ..................................................... 211
On Board Diagnosis Logic .................................... 154 Diagnostic Procedure ............................................ 212
DTC Confirmation Procedure ............................... 155 Component Inspection .......................................... 213
Wiring Diagram ..................................................... 156 Removal and Installation ....................................... 214
Diagnostic Procedure ........................................... 157 DTC P0335 CKP SENSOR (POS) .......................... 215
Component Inspection .......................................... 159 Component Description ........................................ 215
Removal and Installation ...................................... 159 CONSULT-II Reference Value in Data Monitor Mode
DTC P0138, P0158 HO2S2 ..................................... 160 .215
Component Description ........................................ 160 On Board Diagnosis Logic .................................... 215
CONSULT-II Reference Value in Data Monitor Mode DTC Confirmation Procedure ................................ 215
. 160 Wiring Diagram ..................................................... 216
On Board Diagnosis Logic .................................... 160 Diagnostic Procedure ............................................ 217
DTC Confirmation Procedure ............................... 161 Component Inspection .......................................... 220
Wiring Diagram ..................................................... 162 Removal and Installation ....................................... 220
Diagnostic Procedure ........................................... 165 DTC P0340, P0345 CMP SENSOR (PHASE) ......... 221
Component Inspection .......................................... 167 Component Description ........................................ 221
Removal and Installation ...................................... 168 CONSULT-II Reference Value in Data Monitor Mode
DTC P0139, P0159 HO2S2 ..................................... 169 .221
Component Description ........................................ 169 On Board Diagnosis Logic .................................... 221
CONSULT-II Reference Value in Data Monitor Mode DTC Confirmation Procedure ................................ 221
. 169 Wiring Diagram ..................................................... 222

EC-2
 Diagnostic Procedure ........................................... 225 Component Description ........................................ 262
Component Inspection ......................................... 228 CONSULT-II Reference Value in Data Monitor Mode A
Removal and Installation ...................................... 228 . 262
DTC P0420, P0430 THREE WAY CATALYST FUNC- On Board Diagnosis Logic .................................... 262
TION ........................................................................ 229 DTC Confirmation Procedure ............................... 262 EC
On Board Diagnosis Logic ................................... 229 Wiring Diagram (LHD Models) .............................. 263
DTC Confirmation Procedure ............................... 229 Wiring Diagram (RHD Models) ............................. 267
Overall Function Check ........................................ 230 Diagnostic Procedure ........................................... 270
Diagnostic Procedure ........................................... 231 Component Inspection .......................................... 272 C
DTC P0444, P0445 EVAP CANISTER PURGE VOL- Removal and Installation ...................................... 272
UME CONTROL SOLENOID VALVE ..................... 233 DTC P1121 ELECTRIC THROTTLE CONTROL
Description ........................................................... 233 ACTUATOR ............................................................. 273 D
CONSULT-II Reference Value in Data Monitor Mode Component Description ........................................ 273
. 233 On Board Diagnosis Logic .................................... 273
On Board Diagnosis Logic ................................... 234 DTC Confirmation Procedure ............................... 273 E
DTC Confirmation Procedure ............................... 234 Diagnostic Procedure ........................................... 274
Wiring Diagram .................................................... 235 DTC P1122 ELECTRIC THROTTLE CONTROL
Diagnostic Procedure ........................................... 237 FUNCTION .............................................................. 275
Component Inspection ......................................... 238 Description ............................................................ 275 F
Removal and Installation ...................................... 239 On Board Diagnosis Logic .................................... 275
DTC P0500 VSS ..................................................... 240 DTC Confirmation Procedure ............................... 275
Description ........................................................... 240 Wiring Diagram ..................................................... 276 G
On Board Diagnosis Logic ................................... 240 Diagnostic Procedure ........................................... 277
DTC Confirmation Procedure ............................... 240 Component Inspection .......................................... 281
Overall Function Check ........................................ 241 Remove and Installation ....................................... 281 H
Diagnostic Procedure ........................................... 241 DTC P1124, P1126 THROTTLE CONTROL MOTOR
DTC P0550 PSP SENSOR ..................................... 242 RELAY ..................................................................... 282
Component Description ........................................ 242 Component Description ........................................ 282
I
CONSULT-II Reference Value in Data Monitor Mode CONSULT-II Reference Value in Data Monitor Mode
. 242 . 282
On Board Diagnosis Logic ................................... 242 On Board Diagnosis Logic .................................... 282
DTC Confirmation Procedure ............................... 242 DTC Confirmation Procedure ............................... 282 J
Wiring Diagram .................................................... 243 Wiring Diagram ..................................................... 284
Diagnostic Procedure ........................................... 244 Diagnostic Procedure ........................................... 285
Component Inspection ......................................... 246 DTC P1128 THROTTLE CONTROL MOTOR ......... 287 K
DTC P0605 ECM .................................................... 247 Component Description ........................................ 287
Component Description ........................................ 247 On Board Diagnosis Logic .................................... 287
On Board Diagnosis Logic ................................... 247 DTC Confirmation Procedure ............................... 287 L
DTC Confirmation Procedure ............................... 247 Wiring Diagram ..................................................... 288
Diagnostic Procedure ........................................... 248 Diagnostic Procedure ........................................... 289
DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 Component Inspection .......................................... 290
HEATER .................................................................. 250 Removal and Installation ...................................... 291 M
Description ........................................................... 250 DTC P1146, P1166 HO2S2 ..................................... 292
CONSULT-II Reference Value in Data Monitor Mode Component Description ........................................ 292
. 250 CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic ................................... 250 . 292
DTC Confirmation Procedure ............................... 250 On Board Diagnosis Logic .................................... 292
Wiring Diagram .................................................... 252 DTC Confirmation Procedure ............................... 293
Diagnostic Procedure ........................................... 256 Overall Function Check ........................................ 294
Component Inspection ......................................... 257 Wiring Diagram ..................................................... 295
Removal and Installation ...................................... 257 Diagnostic Procedure ........................................... 298
DTC P1065 ECM POWER SUPPLY ....................... 258 Component Inspection .......................................... 301
Component Description ........................................ 258 Removal and Installation ...................................... 302
On Board Diagnosis Logic ................................... 258 DTC P1147, P1167 HO2S2 ..................................... 303
DTC Confirmation Procedure ............................... 258 Component Description ........................................ 303
Wiring Diagram .................................................... 259 CONSULT-II Reference Value in Data Monitor Mode
Diagnostic Procedure ........................................... 260 . 303
DTC P1111, P1136 IVT CONTROL SOLENOID On Board Diagnosis Logic .................................... 303
VALVE ..................................................................... 262 DTC Confirmation Procedure ............................... 304

EC-3
 Overall Function Check ........................................ 305 Diagnostic Procedure ............................................ 351
Wiring Diagram ..................................................... 306 Removal and Installation ....................................... 352
Diagnostic Procedure ........................................... 309 DTC P1273, P1283 A/F SENSOR 1 ........................ 353
Component Inspection .......................................... 312 Component Description ........................................ 353
Removal and Installation ...................................... 313 CONSULT-II Reference Value in Data Monitor Mode
DTC P1211 TCS CONTROL UNIT .......................... 314 .353
Description ............................................................ 314 On Board Diagnosis Logic .................................... 353
On Board Diagnosis Logic .................................... 314 DTC Confirmation Procedure ................................ 353
DTC Confirmation Procedure ............................... 314 Wiring Diagram ..................................................... 355
Diagnostic Procedure ........................................... 314 Diagnostic Procedure ............................................ 358
DTC P1212 TCS COMMUNICATION LINE ............ 315 Removal and Installation ....................................... 361
Description ............................................................ 315 DTC P1274, P1284 A/F SENSOR 1 ........................ 362
On Board Diagnosis Logic .................................... 315 Component Description ........................................ 362
DTC Confirmation Procedure ............................... 315 CONSULT-II Reference Value in Data Monitor Mode
Diagnostic Procedure ........................................... 315 .362
DTC P1217 ENGINE OVER TEMPERATURE ........ 316 On Board Diagnosis Logic .................................... 362
Description ............................................................ 316 DTC Confirmation Procedure ................................ 362
CONSULT-II Reference Value in Data Monitor Mode Wiring Diagram ..................................................... 364
. 317 Diagnostic Procedure ............................................ 367
On Board Diagnosis Logic .................................... 317 Removal and Installation ....................................... 370
Overall Function Check ........................................ 318 DTC P1276, P1286 A/F SENSOR 1 ........................ 371
Wiring Diagram (LHD Models) .............................. 320 Component Description ........................................ 371
Wiring Diagram (RHD Models) ............................. 322 CONSULT-II Reference Value in Data Monitor Mode
Diagnostic Procedure ........................................... 324 .371
Main 12 Causes of Overheating ........................... 330 On Board Diagnosis Logic .................................... 371
Component Inspection .......................................... 330 DTC Confirmation Procedure ................................ 371
DTC P1225 TP SENSOR ........................................ 331 Overall Function Check ......................................... 372
Component Description ........................................ 331 Wiring Diagram ..................................................... 374
On Board Diagnosis Logic .................................... 331 Diagnostic Procedure ............................................ 377
DTC Confirmation Procedure ............................... 331 Removal and Installation ....................................... 378
Diagnostic Procedure ........................................... 332 DTC P1278, P1288 A/F SENSOR 1 ........................ 379
Removal and Installation ...................................... 332 Component Description ........................................ 379
DTC P1226 TP SENSOR ........................................ 333 CONSULT-II Reference Value in Data Monitor Mode
Component Description ........................................ 333 .379
On Board Diagnosis Logic .................................... 333 On Board Diagnosis Logic .................................... 379
DTC Confirmation Procedure ............................... 333 DTC Confirmation Procedure ................................ 380
Diagnostic Procedure ........................................... 334 Wiring Diagram ..................................................... 382
Removal and Installation ...................................... 334 Diagnostic Procedure ............................................ 385
DTC P1229 SENSOR POWER SUPPLY ................ 335 Removal and Installation ....................................... 390
On Board Diagnosis Logic .................................... 335 DTC P1279, P1289 A/F SENSOR 1 ........................ 391
DTC Confirmation Procedure ............................... 335 Component Description ........................................ 391
Wiring Diagram ..................................................... 336 CONSULT-II Reference Value in Data Monitor Mode
Diagnostic Procedure ........................................... 337 .391
DTC P1271, P1281 A/F SENSOR 1 ........................ 339 On Board Diagnosis Logic .................................... 391
Component Description ........................................ 339 DTC Confirmation Procedure ................................ 392
CONSULT-II Reference Value in Data Monitor Mode Wiring Diagram ..................................................... 394
. 339 Diagnostic Procedure ............................................ 397
On Board Diagnosis Logic .................................... 339 Removal and Installation ....................................... 402
DTC Confirmation Procedure ............................... 339 DTC P1564 ASCD STEERING SWITCH ................ 403
Wiring Diagram ..................................................... 341 Component Description ........................................ 403
Diagnostic Procedure ........................................... 344 CONSULT-II Reference Value in Data Monitor Mode
Removal and Installation ...................................... 345 .403
DTC P1272, P1282 A/F SENSOR 1 ........................ 346 On Board Diagnosis Logic .................................... 403
Component Description ........................................ 346 DTC Confirmation Procedure ................................ 404
CONSULT-II Reference Value in Data Monitor Mode Wiring Diagram ..................................................... 405
. 346 Diagnostic Procedure ............................................ 407
On Board Diagnosis Logic .................................... 346 Component Inspection .......................................... 409
DTC Confirmation Procedure ............................... 346 DTC P1572 ASCD BRAKE SWITCH ...................... 410
Wiring Diagram ..................................................... 348 Component Description ........................................ 410

EC-4
 CONSULT-II Reference Value in Data Monitor Mode Component Inspection .......................................... 450
. 410 Removal and Installation ...................................... 450 A
On Board Diagnosis Logic ................................... 410 DTC P2138 APP SENSOR ..................................... 451
DTC confirmation Procedure .................................411 Component Description ........................................ 451
Wiring Diagram (LHD Models) ............................. 412 CONSULT-II Reference Value in Data Monitor Mode EC
Wiring Diagram (RHD Models) ............................. 414 . 451
Diagnostic Procedure ........................................... 415 On Board Diagnosis Logic .................................... 451
Component Inspection ......................................... 420 DTC Confirmation Procedure ............................... 452
DTC P1574 ASCD VEHICLE SPEED SENSOR .... 421 Wiring Diagram ..................................................... 453 C
Component Description ........................................ 421 Diagnostic Procedure ........................................... 454
On Board Diagnosis Logic ................................... 421 Component Inspection .......................................... 457
DTC Confirmation Procedure ............................... 421 Removal and Installation ...................................... 457 D
Diagnostic Procedure ........................................... 422 IGNITION SIGNAL .................................................. 458
DTC P1706 PNP SWITCH ...................................... 423 Component Description ........................................ 458
Component Description ........................................ 423 Wiring Diagram (LHD Models) .............................. 459 E
CONSULT-II Reference Value in Data Monitor Mode Wiring Diagram (RHD Models) ............................. 465
. 423 Diagnostic Procedure ........................................... 470
On Board Diagnosis Logic ................................... 423 Component Inspection .......................................... 475
DTC Confirmation Procedure ............................... 423 Removal and Installation ...................................... 475 F
Overall Function Check ........................................ 424 INJECTOR CIRCUIT ............................................... 476
Wiring Diagram .................................................... 425 Component Description ........................................ 476
Diagnostic Procedure ........................................... 426 CONSULT-II Reference Value in Data Monitor Mode G
DTC P1805 BRAKE SWITCH ................................ 428 . 476
Description ........................................................... 428 Wiring Diagram ..................................................... 477
CONSULT-II Reference Value in Data Monitor Mode Diagnostic Procedure ........................................... 478 H
. 428 Component Inspection .......................................... 481
On Board Diagnosis Logic ................................... 428 Removal and Installation ...................................... 481
DTC Confirmation Procedure ............................... 428 FUEL PUMP CIRCUIT ............................................ 482
I
Wiring Diagram .................................................... 429 Description ............................................................ 482
Diagnostic Procedure ........................................... 430 CONSULT-II Reference Value in Data Monitor Mode
Component Inspection ......................................... 432 . 482
DTC P2122, P2123 APP SENSOR ........................ 433 Wiring Diagram ..................................................... 483 J
Component Description ........................................ 433 Diagnostic Procedure ........................................... 484
CONSULT-II Reference Value in Data Monitor Mode Component Inspection .......................................... 487
. 433 Removal and Installation ...................................... 488 K
On Board Diagnosis Logic ................................... 433 REFRIGERANT PRESSURE SENSOR .................. 489
DTC Confirmation Procedure ............................... 434 Component Description ........................................ 489
Wiring Diagram .................................................... 435 Wiring Diagram ..................................................... 490 L
Diagnostic Procedure ........................................... 436 Diagnostic Procedure ........................................... 491
Component Inspection ......................................... 438 Removal and Installation ...................................... 493
Removal and Installation ...................................... 438 ELECTRICAL LOAD SIGNAL ................................ 494
DTC P2127, P2128 APP SENSOR ........................ 439 Description ............................................................ 494 M
Component Description ........................................ 439 CONSULT-II Reference Value in Data Monitor Mode
CONSULT-II Reference Value in Data Monitor Mode . 494
. 439 Diagnostic Procedure ........................................... 494
On Board Diagnosis Logic ................................... 439 ASCD BRAKE SWITCH ......................................... 495
DTC Confirmation Procedure ............................... 440 Component Description ........................................ 495
Wiring Diagram .................................................... 441 CONSULT-II Reference Value in Data Monitor Mode
Diagnostic Procedure ........................................... 442 . 495
Component Inspection ......................................... 444 Wiring Diagram (LHD Models) .............................. 496
Removal and Installation ...................................... 444 Wiring Diagram (RHD Models) ............................. 498
DTC P2135 TP SENSOR ........................................ 445 Diagnostic Procedure ........................................... 499
Component Description ........................................ 445 Component Inspection .......................................... 504
CONSULT-II Reference Value in Data Monitor Mode ASCD INDICATOR .................................................. 505
. 445 Component Description ........................................ 505
On Board Diagnosis Logic ................................... 445 CONSULT-II Reference Value in Data Monitor Mode
DTC Confirmation Procedure ............................... 446 . 505
Wiring Diagram .................................................... 447 Wiring Diagram ..................................................... 506
Diagnostic Procedure ........................................... 448 Diagnostic Procedure ........................................... 507

EC-5
MI & DATA LINK CONNECTORS ........................... 508 Idle Speed and Ignition Timing .............................. 518
Wiring Diagram ..................................................... 508 Calculated Load Value .......................................... 518
EVAPORATIVE EMISSION SYSTEM ..................... 510 Mass Air Flow Sensor ........................................... 518
Description ............................................................ 510 Intake Air Temperature Sensor ............................. 518
Component Inspection .......................................... 513 Engine Coolant Temperature Sensor .................... 518
POSITIVE CRANKCASE VENTILATION ............... 514 Air Fuel Ratio (A/F) Sensor 1 Heater .................... 518
Description ............................................................ 514 Heated Oxygen sensor 2 Heater .......................... 518
Component Inspection .......................................... 514 Crankshaft Position Sensor (POS) ....................... 518
AUTOMATIC SPEED CONTROL DEVICE (ASCD). 516 Camshaft Position Sensor (PHASE) ..................... 518
System Description ............................................... 516 Throttle Control Motor ........................................... 518
Component Description ........................................ 517 Injector .................................................................. 519
SERVICE DATA AND SPECIFICATIONS (SDS) .... 518 Fuel Pump ............................................................. 519
Fuel Pressure ....................................................... 518

EC-6
 INDEX FOR DTC

INDEX FOR DTC PFP:00024

A
Alphabetical Index EBS010EH

NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000, EC
U1001. Refer to EC-124, "DTC P0011, P0021 IVT CONTROL" .
×:Applicable —: Not applicable
1
DTC* C
Items
CONSULT-II Trip MI lighting up Reference page
(CONSULT-II screen terms)
ECM*3
GST*2
A/F SEN1 (B1) P1271 1271 2 × EC-339 D
A/F SEN1 (B1) P1272 1272 2 × EC-346
A/F SEN1 (B1) P1273 1273 2 × EC-353
E
A/F SEN1 (B1) P1274 1274 2 × EC-362
A/F SEN1 (B1) P1276 1276 2 × EC-371
A/F SEN1 (B1) P1278 1278 2 × EC-379 F
A/F SEN1 (B1) P1279 1279 2 × EC-379
A/F SEN1 (B2) P1281 1281 2 × EC-339
G
A/F SEN1 (B2) P1282 1282 2 × EC-346
A/F SEN1 (B2) P1283 1283 2 × EC-353
A/F SEN1 (B2) P1284 1284 2 × EC-362 H
A/F SEN1 (B2) P1286 1286 2 × EC-371
A/F SEN1 (B2) P1288 1288 2 × EC-379
A/F SEN1 (B2) P1289 1289 2 × EC-391
I

A/F SEN1 HTR (B1) P1031 1031 2 × EC-250

A/F SEN1 HTR (B1) P1032 1032 2 × EC-250 J
A/F SEN1 HTR (B2) P1051 1051 2 × EC-250
A/F SEN1 HTR (B2) P1052 1052 2 × EC-250
APP SEN 1/CIRC P2122 2122 1 × EC-433 K
APP SEN 1/CIRC P2123 2123 1 × EC-433
APP SEN 2/CIRC P2127 2127 1 × EC-439
L
APP SEN 2/CIRC P2128 2128 1 × EC-439
APP SENSOR P2138 2138 1 × EC-451
ASCD BRAKE SW P1572 1572 1 — EC-410 M
ASCD SW P1564 1564 1 — EC-403
ASCD VHL SPD SEN P1574 1574 1 — EC-421
BRAKE SW/CIRCUIT P1805 1805 2 — EC-428
CAN COMM CIRCUIT U1000 4 2 — EC-121
1000*
CAN COMM CIRCUIT U1001 1001*4 2 — EC-121
CKP SEN/CIRCUIT P0335 0335 2 × EC-215
CMP SEN/CIRC-B1 P0340 0340 2 × EC-221
CMP SEN/CIRC-B2 P0345 0345 2 × EC-221
CTP LEARNING P1225 1225 2 — EC-331
CTP LEARNING P1226 1226 2 — EC-333
CYL 1 MISFIRE P0301 0301 2 × EC-203
CYL 2 MISFIRE P0302 0302 2 × EC-203
CYL 3 MISFIRE P0303 0303 2 × EC-203

EC-7
 INDEX FOR DTC

DTC*1
Items
CONSULT-II Trip MI lighting up Reference page
(CONSULT-II screen terms)
2 ECM*3
GST*
CYL 4 MISFIRE P0304 0304 2 × EC-203
CYL 5 MISFIRE P0305 0305 2 × EC-203
CYL 6 MISFIRE P0306 0306 2 × EC-203
ECM P0605 0605 1 or 2 × or — EC-247
ECM BACK UP/CIRCUIT P1065 1065 2 × EC-258
ECT SEN/CIRCUIT P0117 0117 1 × EC-149
ECT SEN/CIRCUIT P0118 0118 1 × EC-149
ENG OVER TEMP P1217 1217 1 × EC-316
ETC ACTR P1121 1121 1 × EC-273
ETC FUNCTION/CIRC P1122 1122 1 × EC-275
ETC MOT P1128 1128 1 × EC-287
ETC MOT PWR P1124 1124 1 × EC-282
ETC MOT PWR P1126 1126 1 × EC-282
FUEL SYS-LEAN-B1 P0171 0171 2 × EC-180
FUEL SYS-LEAN-B2 P0174 0174 2 × EC-180
FUEL SYS-RICH-B1 P0172 0172 2 × EC-189
FUEL SYS-RICH-B2 P0175 0175 2 × EC-189
HO2S2 (B1) P0138 0138 2 × EC-160
HO2S2 (B1) P0139 0139 2 × EC-169
HO2S2 (B1) P1146 1146 2 × EC-292
HO2S2 (B1) P1147 1147 2 × EC-303
HO2S2 (B2) P0158 0158 2 × EC-160
HO2S2 (B2) P0159 0159 2 × EC-169
HO2S2 (B2) P1166 1166 2 × EC-292
HO2S2 (B2) P1167 1167 2 × EC-303
HO2S2 HTR (B1) P0037 0037 2 × EC-127
HO2S2 HTR (B1) P0038 0038 2 × EC-127
HO2S2 HTR (B2) P0057 0057 2 × EC-127
HO2S2 HTR (B2) P0058 0058 2 × EC-127
IAT SEN/CIRCUIT P0112 0112 2 × EC-144
IAT SEN/CIRCUIT P0113 0113 2 × EC-144
INT/V TIM CONT-B1 P0011 0011 2 — EC-124
INT/V TIM CONT-B2 P0021 0021 2 — EC-124
INT/V TIM V/CIR-B1 P1111 1111 2 × EC-262
INT/V TIM V/CIR-B2 P1136 1136 2 × EC-262
KNOCK SEN/CIRC-B1 P0327 0327 2 — EC-210
KNOCK SEN/CIRC-B1 P0328 0328 2 — EC-210
MAF SEN/CIRCUIT P0102 0102 1 × EC-135
MAF SEN/CIRCUIT P0103 0103 1 × EC-135
MULTI CYL MISFIRE P0300 0300 2 × EC-203
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 — EC-45

EC-8
 INDEX FOR DTC

DTC*1
Items A
CONSULT-II Trip MI lighting up Reference page
(CONSULT-II screen terms) 3
ECM*
GST*2
NO DTC IS DETECTED. EC
FURTHER TESTING P0000 0000 — — —
MAY BE REQUIRED.
P-N POS SW/CIRCUIT P1706 1706 2 × EC-423
C
PURG VOLUME CONT/V P0444 0444 2 × EC-233
PURG VOLUME CONT/V P0445 0445 2 × EC-233
PW ST P SEN/CIRC P0550 0550 2 — EC-242 D
SENSOR POWER/CIRC P1229 1229 1 × EC-335
TCS C/U FUNCTN P1211 1211 2 — EC-314
E
TCS/CIRC P1212 1212 2 — EC-315
TP SEN 1/CIRC P0222 0222 1 × EC-197
TP SEN 1/CIRC P0223 0223 1 × EC-197 F
TP SEN 2/CIRC P0122 0122 1 × EC-154
TP SEN 2/CIRC P0123 0123 1 × EC-154
TP SENSOR P2135 2135 1 × EC-445 G
TW CATALYST SYS-B1 P0420 0420 2 × EC-229
TW CATALYST SYS-B2 P0430 0430 2 × EC-229 H
VEH SPEED SEN/CIRC P0500 0500 2 × EC-240
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by ISO 15031-5. I
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.

EC-9
 INDEX FOR DTC

DTC No. Index EBS010EI

NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-124, "DTC P0011, P0021 IVT CONTROL" .
×:Applicable —: Not applicable

DTC*1
Items
CONSULT-II Trip MI lighting up Reference page
(CONSULT-II screen terms)
ECM*3
GST*2
U1000 1000*4 CAN COMM CIRCUIT 2 — EC-121

U1001 4 CAN COMM CIRCUIT 2 — EC-121

1001*
NO DTC IS DETECTED.
P0000 0000 FURTHER TESTING — — —
MAY BE REQUIRED.
P0011 0011 INT/V TIM CONT-B1 2 — EC-124
P0021 0021 INT/V TIM CONT-B2 2 — EC-124
P0037 0037 HO2S2 HTR (B1) 2 × EC-127
P0038 0038 HO2S2 HTR (B1) 2 × EC-127
P0057 0057 HO2S2 HTR (B2) 2 × EC-127
P0058 0058 HO2S2 HTR (B2) 2 × EC-127
P0102 0102 MAF SEN/CIRCUIT 1 × EC-135
P0103 0103 MAF SEN/CIRCUIT 1 × EC-135
P0112 0112 IAT SEN/CIRCUIT 2 × EC-144
P0113 0113 IAT SEN/CIRCUIT 2 × EC-144
P0117 0117 ECT SEN/CIRCUIT 1 × EC-149
P0118 0118 ECT SEN/CIRCUIT 1 × EC-149
P0122 0122 TP SEN 2/CIRC 1 × EC-154
P0123 0123 TP SEN 2/CIRC 1 × EC-154
P0138 0138 HO2S2 (B1) 2 × EC-160
P0139 0139 HO2S2 (B1) 2 × EC-169
P0158 0158 HO2S2 (B2) 2 × EC-160
P0159 0159 HO2S2 (B2) 2 × EC-169
P0171 0171 FUEL SYS-LEAN-B1 2 × EC-180
P0172 0172 FUEL SYS-RICH-B1 2 × EC-189
P0174 0174 FUEL SYS-LEAN-B2 2 × EC-180
P0175 0175 FUEL SYS-RICH-B2 2 × EC-189
P0222 0222 TP SEN 1/CIRC 1 × EC-197
P0223 0223 TP SEN 1/CIRC 1 × EC-197
P0300 0300 MULTI CYL MISFIRE 2 × EC-203
P0301 0301 CYL 1 MISFIRE 2 × EC-203
P0302 0302 CYL 2 MISFIRE 2 × EC-203
P0303 0303 CYL 3 MISFIRE 2 × EC-203
P0304 0304 CYL 4 MISFIRE 2 × EC-203
P0305 0305 CYL 5 MISFIRE 2 × EC-203
P0306 0306 CYL 6 MISFIRE 2 × EC-203
P0327 0327 KNOCK SEN/CIRC-B1 2 — EC-210
P0328 0328 KNOCK SEN/CIRC-B1 2 — EC-210

EC-10
 INDEX FOR DTC

DTC*1
Items A
CONSULT-II Trip MI lighting up Reference page
3 (CONSULT-II screen terms)
ECM*
GST*2
P0335 0335 CKP SEN/CIRCUIT 2 × EC-215 EC
P0340 0340 CMP SEN/CIRC-B1 2 × EC-221
P0345 0345 CMP SEN/CIRC-B2 2 × EC-221
P0420 0420 TW CATALYST SYS-B1 2 × EC-229 C
P0430 0430 TW CATALYST SYS-B2 2 × EC-229
P0444 0444 PURG VOLUME CONT/V 2 × EC-233
D
P0445 0445 PURG VOLUME CONT/V 2 × EC-233
P0500 0500 VEH SPEED SEN/CIRC 2 × EC-240
P0550 0550 PW ST P SEN/CIRC 2 — EC-242 E
P0605 0605 ECM 1 or 2 × or — EC-247
P1031 1031 A/F SEN1 HTR (B1) 2 × EC-250
F
P1032 1032 A/F SEN1 HTR (B1) 2 × EC-250
P1051 1051 A/F SEN1 HTR (B2) 2 × EC-250
P1052 1052 A/F SEN1 HTR (B2) 2 × EC-250 G
P1065 1065 ECM BACK UP/CIRCUIT 2 × EC-258
P1111 1111 INT/V TIM V/CIR-B1 2 × EC-262
H
P1121 1121 ETC ACTR 1 × EC-273
P1122 1122 ETC FUNCTION/CIRC 1 × EC-275
P1124 1124 ETC MOT PWR 1 × EC-282 I
P1126 1126 ETC MOT PWR 1 × EC-282
P1128 1128 ETC MOT 1 × EC-287
P1136 1136 INT/V TIM V/CIR-B2 2 × EC-262 J
P1146 1146 HO2S2 (B1) 2 × EC-292
P1147 1147 HO2S2 (B1) 2 × EC-303
K
P1166 1166 HO2S2 (B2) 2 × EC-292
P1167 1167 HO2S2 (B2) 2 × EC-303
P1211 1211 TCS C/U FUNCTN 2 — EC-314 L
P1212 1212 TCS/CIRC 2 — EC-315
P1217 1217 ENG OVER TEMP 1 × EC-316
M
P1225 1225 CTP LEARNING 2 — EC-331
P1226 1226 CTP LEARNING 2 — EC-333
P1229 1229 SENSOR POWER/CIRC 1 × EC-335
P1271 1271 A/F SENSOR (B1) 2 × EC-339
P1272 1272 A/F SENSOR (B1) 2 × EC-346
P1273 1273 A/F SENSOR (B1) 2 × EC-353
P1274 1274 A/F SENSOR (B1) 2 × EC-362
P1276 1276 A/F SENSOR (B1) 2 × EC-371
P1278 1278 A/F SENSOR (B1) 2 × EC-379
P1279 1279 A/F SENSOR (B1) 2 × EC-391
P1281 1281 A/F SENSOR (B2) 2 × EC-339
P1282 1282 A/F SENSOR (B2) 2 × EC-346
P1283 1283 A/F SENSOR (B2) 2 × EC-353

EC-11
 INDEX FOR DTC

DTC*1
Items
CONSULT-II Trip MI lighting up Reference page
3 (CONSULT-II screen terms)
2 ECM*
GST*
P1284 1284 A/F SENSOR (B2) 2 × EC-362
P1286 1286 A/F SENSOR (B2) 2 × EC-371
P1288 1288 A/F SENSOR (B2) 2 × EC-379
P1289 1289 A/F SENSOR (B2) 2 × EC-391
P1564 1564 ASCD SW 1 — EC-403
P1572 1572 ASCD BRAKE SW 1 — EC-410
P1574 1574 ASCD VHL SPD SEN 1 — EC-421
P1610 - P1615 1610 - 1615 NATS MALFUNCTION 2 — EC-45
P1706 1706 P-N POS SW/CIRCUIT 2 × EC-423
P1805 1805 BRAKE SW/CIRCUIT 2 — EC-428
P2122 2122 APP SEN 1/CIRC 1 × EC-433
P2123 2123 APP SEN 1/CIRC 1 × EC-433
P2127 2127 APP SEN 2/CIRC 1 × EC-439
P2128 2128 APP SEN 2/CIRC 1 × EC-439
P2135 2135 TP SENSOR 1 × EC-445
P2138 2138 APP SENSOR 1 × EC-451
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.

EC-12
 PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER” EBS011T2

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along EC
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual. C
WARNING:
● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. D
● Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. E
● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors. F
Precautions for Battery Service EBS010EK

This vehicle is equipped with the automatic window adjusting function. When a door is opened, the window G
automatically lowers slightly to avoid contact between the window and the roof. After the door is closed, the
window will automatically raise slightly.
On vehicles equipped with the automatic window adjusting function, lower both the driver and front passenger
side windows before disconnecting the battery cables. This will prevent interference between the side window H
and the roof when either door is opened/closed.
CAUTION:
After the battery cables are disconnected, do not open/close the driver and/or front passenger door I
with the window in the full up position. The automatic window adjusting function will not work and the
roof may be damaged.
On Board Diagnostic (OBD) System of Engine EBS010EL
J

The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
K
CAUTION:
● Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MI to light up. L
● Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.) M
● Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-97, "HAR-
NESS CONNECTOR" .
● Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MI to light up due to the short circuit.
● Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the EVAP system or fuel injection system,
etc.
● Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM
before returning the vehicle to the customer.

EC-13
 PRECAUTIONS

Precaution EBS010EM

● Always use a 12 volt battery as power source.

● Do not attempt to disconnect battery cables while engine is
running.
● Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect battery
ground cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.
● Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF289H

● Do not disassemble ECM.

● If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.

PBIB1164E

● When connecting ECM harness connector, fasten it

securely with a lever as far as it will go as shown in the fig-
ure.

SEC406D

● When connecting or disconnecting pin connectors into or

from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
● Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.
● Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys- PBIB0090E

tem malfunctions due to receiving external noise, degraded

operation of ICs, etc.
● Keep engine control system parts and harness dry.

EC-14
 PRECAUTIONS

● Before replacing ECM, perform ECM Terminals and Refer-

ence Value inspection and make sure ECM functions prop- A
erly. Refer to EC-77 .
● Handle mass air flow sensor carefully to avoid damage.
● Do not disassemble mass air flow sensor. EC
● Do not clean mass air flow sensor with any type of deter-
gent.
● Do not disassemble electric throttle control actuator. C
● Even a slight leak in the air intake system can cause seri-
ous incidents. MEF040D

● Do not shock or jar the camshaft position sensor (PHASE), D

crankshaft position sensor (POS).
● After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check. E
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.
F

SAT652J

H
● When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and I
damage the ECM power transistor.
● Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's J
transistor. Use a ground other than ECM terminals, such as
the ground.
K

SEF348N

EC-15
 PRECAUTIONS

● B1 indicates the bank 1, B2 indicates the bank 2 as shown

in the figure.

SEC893C

● Do not operate fuel pump when there is no fuel in lines.

● Tighten fuel hose clamps to the specified torque.

PBIB1100E

● Do not depress accelerator pedal when starting.

● Immediately after starting, do not rev up engine unneces-
sarily.
● Do not rev up engine just prior to shutdown.

SEF709Y

● When installing C.B. ham radio or a mobile phone, be sure

to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
– Keep the antenna as far as possible from the electronic
control units.
– Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
– Adjust the antenna and feeder line so that the standing-
wave radio can be kept smaller.
SEF708Y
– Be sure to ground the radio to vehicle body.
Wiring Diagrams and Trouble Diagnosis EBS010EN

When you read wiring diagrams, refer to the following:

● GI-15, "How to Read Wiring Diagrams"
● PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit
When you perform trouble diagnosis, refer to the following:
● GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"
● GI-24, "How to Perform Efficient Diagnosis for an Electrical Incident"

EC-16
 PREPARATION

PREPARATION PFP:00002
A
Special Service Tools EBS010EO

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number EC
Description
Tool name

KV10117100 Loosening or tightening heated oxygen sensor 2

Heated oxygen with 22 mm (0.87 in) hexagon nut
C
sensor wrench

D
S-NT379

KV10114400 Loosening or tightening air fuel ratio (A/F) sensor

E
Heated oxygen 1
sensor wrench a: 22 mm (0.87 in)

S-NT636

KV10117600 Checking fuel pressure with pressure gauge G

Fuel pressure check
adapter
H

S-NT777
I
KV109E0010 Measuring the ECM signals with a circuit tester
Break-out box
J

K
S-NT825

KV109E0080 Measuring the ECM signals with a circuit tester

Y-cable adapter
L

M
S-NT826

EG17650301 Adapting radiator cap tester to radiator cap and

Radiator cap tester radiator filler neck
adapter a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)

S-NT564

EC-17
 PREPARATION

Commercial Service Tools EBS010EP

Tool name Description

Fuel filler cap adapter Checking fuel tank vacuum relief valve opening
pressure

S-NT653

Socket wrench Removing and installing engine coolant

temperature sensor

S-NT705

Oxygen sensor thread Reconditioning the exhaust system threads

cleaner before installing a new oxygen sensor. Use with
anti-seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for
Zirconia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for
Titania Oxygen Sensor
AEM488

Anti-seize lubricant Lubricating oxygen sensor thread cleaning tool

i.e.: (PermatexTM when reconditioning exhaust system threads.
133AR or equivalent
meeting MIL
specification MIL-A-
907)

S-NT779

EC-18
 ENGINE CONTROL SYSTEM

ENGINE CONTROL SYSTEM PFP:23710

A
System Diagram EBS010EQ

EC

PBIB1913E

EC-19
 ENGINE CONTROL SYSTEM

Vacuum Hose Drawing EBS010ER

PBIB1552E

Refer to EC-19, "System Diagram" for Vacuum Control System.

EC-20
 ENGINE CONTROL SYSTEM

System Chart EBS010ES

A
Input (Sensor) ECM Function Output (Actuator)
● Camshaft position sensor (PHASE) Fuel injection & mixture ratio control Fuel injectors
● Crankshaft position sensor (POS) Electronic ignition system Power transistor EC
● Mass air flow sensor Fuel pump control Fuel pump relay
● Engine coolant temperature sensor
ASCD vehicle speed control Electric throttle control actuator
● Air fuel ratio (A/F) sensor 1 C
On board diagnostic system MI (On the instrument panel)*3
● Throttle position sensor
Air fuel ratio (A/F) sensor 1 heater control Air fuel ratio (A/F) sensor 1 heater
● Accelerator pedal position sensor
● Park/neutral position (PNP) switch Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater D
● Intake air temperature sensor EVAP canister purge volume control
EVAP canister purge flow control
solenoid valve
● Power steering pressure sensor
Air conditioning cut control Air conditioner relay*3
E
● Ignition switch
● Battery voltage
● Knock sensor
F
● Refrigerant pressure sensor
● Stop lamp switch
● ASCD steering switch
G
● ASCD brake switch Cooling fan control Cooling fan relays*3
● ASCD clutch switch
● Heated oxygen sensor 2*1 H
● Air conditioner switch*2
● Wheel sensor*2
● Electrical load signal*2 I
*1: This sensor is not used to control the engine system under normal conditions.
*2: This input signal is sent to the ECM through CAN communication line.
*3: This output signal is sent from the ECM through CAN communication line. J
Multiport Fuel Injection (MFI) System EBS010ET

INPUT/OUTPUT SIGNAL CHART

K
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed*3
Camshaft position sensor (PHASE) Piston position L
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
M
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position Fuel injection
Park/neutral position (PNP) switch Gear position & mixture ratio Fuel injectors
control
Knock sensor Engine knocking condition
Battery Battery voltage*3
Power steering pressure sensor Power steering operation

Heated oxygen sensor 2*1 Density of oxygen in exhaust gas

Air conditioner switch*2 Air conditioner operation

2 Vehicle speed
Wheel sensor*
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.

EC-21
 ENGINE CONTROL SYSTEM

SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.
<Fuel increase>
● During warm-up
● When starting the engine
● During acceleration
● Hot-engine operation
● High-load, high-speed operation
<Fuel decrease>
● During deceleration
● During high engine speed operation
MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)

SEF503YB

The mixture ratio feedback system provides the best air-fuel mixture ratio for driveability and emission control.
The three way catalyst 1 can then better reduce CO, HC and NOx emissions. This system uses air fuel ratio
(A/F) sensor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The ECM
adjusts the injection pulse width according to the sensor voltage signal. For more information about air fuel
ratio (A/F) sensor 1, refer to EC-339 . This maintains the mixture ratio within the range of stoichiometric (ideal
air-fuel mixture).
This stage is referred to as the closed loop control condition.
Heated oxygen sensor 2 is located downstream of the three way catalyst 1. Even if the switching characteris-
tics of air fuel ratio (A/F) sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal from
heated oxygen sensor 2.
Open Loop Control
The open loop system condition refers to when the ECM detects any of the following conditions. Feedback
control stops in order to maintain stabilized fuel combustion.
● Deceleration and acceleration
● High-load, high-speed operation
● Malfunction of A/F sensor 1 or its circuit
● Insufficient activation of A/F sensor 1 at low engine coolant temperature
● High engine coolant temperature
● During warm-up
● When starting the engine
MIXTURE RATIO SELF-LEARNING CONTROL
The mixture ratio feedback control system monitors the mixture ratio signal transmitted from A/F sensor 1.
This feedback signal is then sent to the ECM. The ECM controls the basic mixture ratio as close to the theoret-

EC-22
 ENGINE CONTROL SYSTEM

ical mixture ratio as possible. However, the basic mixture ratio is not necessarily controlled as originally
designed. Both manufacturing differences (i.e., mass air flow sensor hot film) and characteristic changes dur- A
ing operation (i.e., injector clogging) directly affect mixture ratio.
Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This is
then computed in terms of “injection pulse duration” to automatically compensate for the difference between
EC
the two ratios.
“Fuel trim” refers to the feedback compensation value compared against the basic injection duration. Fuel trim
includes short term fuel trim and long term fuel trim.
“Short term fuel trim” is the short-term fuel compensation used to maintain the mixture ratio at its theoretical C
value. The signal from A/F sensor 1 indicates whether the mixture ratio is RICH or LEAN compared to the the-
oretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and an increase in
fuel volume if it is lean. D
“Long term fuel trim” is overall fuel compensation carried out long-term to compensate for continual deviation
of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences,
wear over time and changes in the usage environment.
E
FUEL INJECTION TIMING

SEF179U

Two types of systems are used.

I
Sequential Multiport Fuel Injection System
Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used
when the engine is running. J
Simultaneous Multiport Fuel Injection System
Fuel is injected simultaneously into all six cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM. K
The six injectors will then receive the signals two times for each engine cycle.
This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating.
FUEL SHUT-OFF L
Fuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds.
Electronic Ignition (EI) System EBS010EU
M
INPUT/OUTPUT SIGNAL CHART
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed*2
Camshaft position sensor (PHASE) Piston position

Mass air flow sensor Amount of intake air

Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Ignition timing
Power transistor
Accelerator pedal position sensor Accelerator pedal position control
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery Battery voltage*2

Wheel sensor*1 Vehicle speed

*1: This signal is sent to the ECM through CAN communication line.

EC-23
 ENGINE CONTROL SYSTEM

*2: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION
The ignition timing is controlled by the ECM to maintain the best air-
fuel ratio for every running condition of the engine. The ignition tim-
ing data is stored in the ECM. This data forms the map shown.
The ECM receives information such as the injection pulse width and
camshaft position sensor signal. Computing this information, ignition
signals are transmitted to the power transistor.
e.g., N: 1,800 rpm, Tp: 1.50 msec
A °BTDC
During the following conditions, the ignition timing is revised by the
ECM according to the other data stored in the ECM.
● At starting SEF742M

● During warm-up
● At idle
● At low battery voltage
● During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Air Conditioning Cut Control EBS010EV

INPUT/OUTPUT SIGNAL CHART

Sensor Input Signal to ECM ECM function Actuator

Air conditioner switch*1 Air conditioner ON signal

Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*2
Air conditioner
Engine coolant temperature sensor Engine coolant temperature Air conditioner relay
cut control
Battery Battery voltage*2
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
1 Vehicle speed
Wheel sensor*
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
● When the accelerator pedal is fully depressed.
● When cranking the engine.
● At high engine speeds.
● When the engine coolant temperature becomes excessively high.
● When operating power steering during low engine speed or low vehicle speed.
● When engine speed is excessively low.
● When refrigerant pressure is excessively low or high.

EC-24
 ENGINE CONTROL SYSTEM

Fuel Cut Control (at No Load and High Engine Speed) EBS010EW

INPUT/OUTPUT SIGNAL CHART A

Sensor Input Signal to ECM ECM function Actuator
Park/neutral position (PNP) switch Neutral position
EC
Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temperature Fuel cut con-
Fuel injectors
trol
Crankshaft position sensor (POS) C
Engine speed
Camshaft position sensor (PHASE)
Wheel sensor* Vehicle speed
*: This signal is sent to the ECM through CAN communication line. D

SYSTEM DESCRIPTION
If the engine speed is above 1,800 rpm with no load (for example, the shift position is neutral and engine E
speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies
based on engine speed.
Fuel cut will operate until the engine speed reaches 1,500 rpm, then fuel cut is cancelled.
NOTE: F
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-21 .
CAN communication EBS010EX
G
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec- H
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. I
Refer to LAN-4, "CAN Communication Unit" , about CAN communication for detail.

EC-25
 BASIC SERVICE PROCEDURE

BASIC SERVICE PROCEDURE PFP:00018

Idle Speed and Ignition Timing Check EBS010EY

IDLE SPEED
With CONSULT-II
Check idle speed in “DATA MONITOR” mode with CONSULT-II.

SEF058Y

With GST
Check idle speed with GST.
IGNITION TIMING
Any of following two methods may be used.
Method A
1. Attach timing light to loop wire as shown.
2. Check ignition timing.

PBIB1287E

Method B
1. Remove No. 1 ignition coil.

PBIB1092E

2. Connect No. 1 ignition coil and No. 1 spark plug with suitable
high-tension wire as shown, and attach timing light clamp to this
wire.

PBIB1097E

EC-26
 BASIC SERVICE PROCEDURE

EC

SEF166Y

3. Check ignition timing. D

G
PBIB1098E

Accelerator Pedal Released Position Learning EBS010F0

DESCRIPTION H
Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected. I
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds. J
3. Turn ignition switch OFF wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
K
5. Turn ignition switch OFF wait at least 10 seconds.
Throttle Valve Closed Position Learning EBS010F1

DESCRIPTION L
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
M
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume Learning EBS010F2

DESCRIPTION
Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:
● Each time electric throttle control actuator or ECM is replaced.
● Idle speed or ignition timing is out of specification.
PREPARATION
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.

EC-27
 BASIC SERVICE PROCEDURE

● Battery voltage: More than 12.9V (At idle)

● Engine coolant temperature: 70 - 100°C (158 - 212°F)
● PNP switch: ON
● Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
● Steering wheel: Neutral (Straight-ahead position)
● Vehicle speed: Stopped
● Transmission: Warmed-up
Drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-II
1. Perform EC-27, "Accelerator Pedal Released Position Learning" .
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.

SEF217Z

6. Touch “START” and wait 20 seconds.

SEF454Y

7. Make sure that “CMPLT” is displayed on CONSULT-II screen. If

“CMPLT” is not displayed, Idle Air Volume Learning will not be
carried out successfully. In this case, find the cause of the inci-
dent by referring to the Diagnostic Procedure below.
8. Rev up the engine two or three times and make sure that idle
speed and ignition timing are within the specifications.
ITEM SPECIFICATION
Idle speed 650±50 rpm
Ignition timing 15±5° BTDC
MBIB0238E

Without CONSULT-II
NOTE:
● It is better to count the time accurately with a clock.

EC-28
 BASIC SERVICE PROCEDURE

● It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction. A
1. Perform EC-27, "Accelerator Pedal Released Position Learning" .
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature. EC
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Turn ignition switch OFF and wait at least 10 seconds.
C
6. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal. D
b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MI stops
blinking and turned ON. E
9. Fully release the accelerator pedal within 3 seconds after the MI turned ON.
10. Start engine and let it idle.
11. Wait 20 seconds. F

I
PBIB0665E

12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the
specifications. J

ITEM SPECIFICATION
Idle speed 650±50 rpm K
Ignition timing 15±5° BTDC
13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried
out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCE- L
DURE below.
DIAGNOSTIC PROCEDURE
M
If idle air volume learning cannot be performed successfully, proceed as follows:
1. Check that throttle valve is fully closed.
2. Check PCV valve operation.
3. Check that downstream of throttle valve is free from air leakage.
4. When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the incident.
It is useful to perform EC-105, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5. If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform Idle air volume learning all over again:
● Engine stalls.

● Erroneous idle.

Fuel Pressure Check EBS010F3

FUEL PRESSURE RELEASE

With CONSULT-II
1. Turn ignition switch ON.

EC-29
 BASIC SERVICE PROCEDURE

2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”

mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel
pressure.
5. Turn ignition switch OFF.

SEF214Y

Without CONSULT-II
1. Remove fuel pump fuse located in IPDM E/R.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.

PBIB1910E

FUEL PRESSURE CHECK

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
● Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because Z33 models do not have fuel return system.
● Use fuel pressure check adapter (KV10117600) to check fuel pressure.
1. Release fuel pressure to zero. Refer to EC-29, "FUEL PRESSURE RELEASE" .
2. Remove fuel sub-tube mounting bolt.

PBIB1642E

3. Disconnect fuel damper (with feed hose) from fuel sub-tube and
set fuel pressure check adapter (KV10117600).
4. Install pressure gauge to the fuel pressure check adapter as
shown in the figure.
5. Turn ignition switch ON and check for fuel leakage.
6. Start engine and check for fuel leakage.
7. Read the indication of fuel pressure gauge.

At idling: Approximately 350 kPa (3.5 bar, 3.57 kg/cm2 ,

51 psi) PBIB1643E

8. If result is unsatisfactory, go to next step.

9. Check the following.
● Fuel hoses and fuel tubes for clogging

EC-30
 BASIC SERVICE PROCEDURE

● Fuel filter for clogging

● Fuel pump A
● Fuel pressure regulator for clogging

If OK, replace fuel pressure regulator.

If NG, repair or replace. EC

EC-31
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

ON BOARD DIAGNOSTIC (OBD) SYSTEM PFP:00028

Introduction EBS010F4

The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
Emission-related diagnostic information ISO Standard
Diagnostic Trouble Code (DTC) Mode 3 of ISO 15031-5
Freeze Frame data Mode 2 of ISO 15031-5
System Readiness Test (SRT) code Mode 1 of ISO 15031-5
1st Trip Diagnostic Trouble Code (1st Trip DTC) Mode 7 of ISO 15031-5
1st Trip Freeze Frame data
Test values and Test limits Mode 6 of ISO 15031-5
Calibration ID Mode 9 of ISO 15031-5

The above information can be checked using procedures listed in the table below.
×: Applicable —: Not applicable
Freeze Frame 1st trip Freeze
DTC 1st trip DTC SRT code Test value
data Frame data
CONSULT-II × × × × × —
GST × ×*1 × — × ×
ECM × ×*2 — — — —

*1: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
*2: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.

The malfunction indicator (MI) on the instrument panel lights up when the same malfunction is detected in two
consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-59 .)
Two Trip Detection Logic EBS010F5

When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MI will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MI lights up. The MI lights up at the same time when the DTC is stored. <2nd trip>
The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during
vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MI, and store
DTC and Freeze Frame data, even in the 1st trip, as shown below.
×: Applicable —: Not applicable
MI DTC 1st trip DTC
1st trip 2nd trip 2nd trip
Items 1st trip 2nd trip 1st trip
Lighting Lighting display-
Blinking Blinking displaying displaying displaying
up up ing

Misfire (Possible three way cata-

lyst damage) — DTC: P0300 - × — — — — — × —
P0306 is being detected
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 - — — × — — × — —
P0306 is being detected
One trip detection diagnoses
— × — — × — — —
(Refer to EC-7 .)
Except above — — — × — × × —

When there is an open circuit on MI circuit, the ECM cannot warn the driver by lighting MI up when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MI circuit is open by means
of operating fail-safe function.

EC-32
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

The fail-safe function also operates when above diagnoses except MI circuit are detected and demands the
driver to repair the malfunction. A
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut

Emission-related Diagnostic Information EBS010F6

EC
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
DTC*1 Test value/
Items Reference
CONSULT-II SRT code Test limit 1st trip DTC C
(CONSULT-II screen terms) 3 page
ECM* (GST only)
GST*2
CAN COMM CIRCUIT U1000 1000*5 — — × EC-121
D
CAN COMM CIRCUIT U1001 1001*5 — — × EC-121
NO DTC IS DETECTED.
FURTHER TESTING P0000 0000 — — — — E
MAY BE REQUIRED.
INT/V TIM CONT-B1 P0011 0011 — — × EC-124
INT/V TIM CONT-B2 P0021 0021 — — × EC-124 F
HO2S2 HTR (B1) P0037 0037 × × ×*4 EC-127

HO2S2 HTR (B1) P0038 0038 × × ×*4 EC-127

G
HO2S2 HTR (B2) P0057 0057 × × ×*4 EC-127

HO2S2 HTR (B2) P0058 0058 × × ×*4 EC-127

H
MAF SEN/CIRCUIT P0102 0102 — — — EC-135
MAF SEN/CIRCUIT P0103 0103 — — — EC-135
IAT SEN/CIRCUIT P0112 0112 — — × EC-144 I
IAT SEN/CIRCUIT P0113 0113 — — × EC-144
ECT SEN/CIRCUIT P0117 0117 — — — EC-149
ECT SEN/CIRCUIT P0118 0118 — — — EC-149
J

TP SEN 2/CIRC P0122 0122 — — — EC-154

TP SEN 2/CIRC P0123 0123 — — — EC-154
K
HO2S2 (B1) P0138 0138 — × × EC-160
HO2S2 (B1) P0139 0139 × × ×*4 EC-169
L
HO2S2 (B2) P0158 0158 — × × EC-160
HO2S2 (B2) P0159 0159 × × ×*4 EC-169
FUEL SYS-LEAN-B1 P0171 0171 — — × EC-180 M
FUEL SYS-RICH-B1 P0172 0172 — — × EC-189
FUEL SYS-LEAN-B2 P0174 0174 — — × EC-180
FUEL SYS-RICH-B2 P0175 0175 — — × EC-189
TP SEN 1/CIRC P0222 0222 — — — EC-197
TP SEN 1/CIRC P0223 0223 — — — EC-197
MULTI CYL MISFIRE P0300 0300 — — × EC-203
CYL 1 MISFIRE P0301 0301 — — × EC-203
CYL 2 MISFIRE P0302 0302 — — × EC-203
CYL 3 MISFIRE P0303 0303 — — × EC-203
CYL 4 MISFIRE P0304 0304 — — × EC-203
CYL 5 MISFIRE P0305 0305 — — × EC-203
CYL 6 MISFIRE P0306 0306 — — × EC-203
KNOCK SEN/CIRC-B1 P0327 0327 — — × EC-210

EC-33
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

DTC*1 Test value/

Items Reference
CONSULT-II SRT code Test limit 1st trip DTC
(CONSULT-II screen terms) 3 page
ECM* (GST only)
GST*2
KNOCK SEN/CIRC-B1 P0328 0328 — — × EC-210
CKP SEN/CIRCUIT P0335 0335 — — × EC-215
CMP SEN/CIRC-B1 P0340 0340 — — × EC-221
CMP SEN/CIRC-B2 P0345 0345 — — × EC-221
TW CATALYST SYS-B1 P0420 0420 × × ×*4 EC-229

TW CATALYST SYS-B2 P0430 0430 × × ×* 4 EC-229

PURG VOLUME CONT/V P0444 0444 — — × EC-233
PURG VOLUME CONT/V P0445 0445 — — × EC-233
VEH SPEED SEN/CIRC P0500 0500 — — × EC-240
PW ST P SEN/CIRC P0550 0550 — — × EC-242
ECM P0605 0605 — — × or — EC-247
A/F SEN1 HTR (B1) P1031 1031 × × ×*4 EC-250

A/F SEN1 HTR (B1) P1032 1032 × × ×*4 EC-250

A/F SEN1 HTR (B2) P1051 1051 × × ×*4 EC-250

A/F SEN1 HTR (B2) P1052 1052 × × ×*4 EC-250

ECM BACK UP/CIRC P1065 1065 — — × EC-258
INT/V TIM V/CIR-B1 P1111 1111 — — × EC-262
ETC ACTR P1121 1121 — — — EC-273
ETC FUNCTION/CIRC P1122 1122 — — — EC-275
ETC MOT PWR P1124 1124 — — — EC-282
ETC MOT PWR P1126 1126 — — — EC-282
ETC MOT P1128 1128 — — — EC-287
INT/V TIM V/CIR-B2 P1136 1136 — — × EC-262
HO2S2 (B1) P1146 1146 × × ×*4 EC-292

HO2S2 (B1) P1147 1147 × × ×* 4 EC-303

HO2S2 (B2) P1166 1166 × × ×*4 EC-292

HO2S2 (B2) P1167 1167 × × ×*4 EC-303

TCS C/U FUNCTN P1211 1211 — — × EC-314
TCS/CIRC P1212 1212 — — × EC-315
ENG OVER TEMP P1217 1217 — — — EC-316
CTP LEARNING P1225 1225 — — × EC-331
CTP LEARNING P1226 1226 — — × EC-333
SENSOR POWER/CIRC P1229 1229 — — — EC-335
A/F SENSOR1 (B1) P1271 1271 — × × EC-339
A/F SENSOR1 (B1) P1272 1272 — × × EC-346
A/F SENSOR1 (B1) P1273 1273 — × × EC-353
A/F SENSOR1 (B1) P1274 1274 — × × EC-362
A/F SENSOR1 (B1) P1276 1276 — × × EC-371
A/F SENSOR1 (B1) P1278 1278 × × ×* 4 EC-379

A/F SENSOR1 (B1) P1279 1279 × × ×*4 EC-391

A/F SENSOR1 (B2) P1281 1281 — × × EC-339

EC-34
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

DTC*1 Test value/

Items Reference A
CONSULT-II SRT code Test limit 1st trip DTC
(CONSULT-II screen terms) 3 page
ECM* (GST only)
GST*2
A/F SENSOR1 (B2) P1282 1282 — × × EC-346 EC
A/F SENSOR1 (B2) P1283 1283 — × × EC-353
A/F SENSOR1 (B2) P1284 1284 — × × EC-362
A/F SENSOR1 (B2) P1286 1286 — × × EC-371 C
A/F SENSOR1 (B2) P1288 1288 × × ×*4 EC-379

A/F SENSOR1 (B2) P1289 1289 × × ×*4 EC-391 D

ASCD SW P1564 1564 — — — EC-403
ASCD BRAKE SW P1572 1572 — — — EC-410
E
ASCD VHL SPD SEN P1574 1574 — — — EC-421
P1610 -
NATS MALFUNCTION 1610 - 1615 — — × EC-45
P1615
F
P-N POS SW/CIRCUIT P1706 1706 — — × EC-423
BRAKE SW/CIRCUIT P1805 1805 — — × EC-428
APP SEN 1/CIRC P2122 2122 — — — EC-433 G
APP SEN 1/CIRC P2123 2123 — — — EC-433
APP SEN 2/CIRC P2127 2127 — — — EC-439
H
APP SEN 2/CIRC P2128 2128 — — — EC-439
TP SENSOR P2135 2135 — — — EC-445
APP SENSOR P2138 2138 — — — EC-451 I
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
J
*4: This is not displayed with GST.
*5: The troubleshooting for this DTC needs CONSULT-II.

DTC AND 1ST TRIP DTC K

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
L
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MI will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MI lights up. In other words, M
the DTC is stored in the ECM memory and the MI lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MI during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-43, "HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
For malfunctions in which 1st trip DTCs are displayed, refer to EC-33, "EMISSION-RELATED DIAGNOSTIC
INFORMATION ITEMS" . These items are required by legal regulations to continuously monitor the system/
component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.
1st trip DTC is specified in Mode 7 of ISO 15031-5. 1st trip DTC detection occurs without lighting up the MI
and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step II, refer to EC-55, "WORK FLOW" . Then perform DTC Confir-
mation Procedure or Overall Function Check to try to duplicate the malfunction. If the malfunction is dupli-
cated, the item requires repair.

EC-35
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

How to Read DTC and 1st Trip DTC

DTC and 1st trip DTC can be read by the following methods.
With CONSULT-II
With GST
CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P1148, P1706, etc.
These DTCs are prescribed by ISO 15031-5.
(CONSULT-II also displays the malfunctioning component or system.)
No Tools
The number of blinks of the MI in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 1148, 1706, etc.
These DTCs are controlled by NISSAN.
● 1st trip DTC No. is the same as DTC No.
● Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if
available) is recommended.
A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunc-
tion is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be [0].
If a 1st trip DTC is stored in the ECM, the time data will be [1t].

PBIB0911E

FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, base fuel schedule and intake
air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
details, see EC-88, "Freeze Frame Data and 1st Trip Freeze Frame Data" .
Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MI on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
Priority Items
Freeze frame data Misfire — DTC: P0300 - P0306
1
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items
3 1st trip freeze frame data

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-
function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st

EC-36
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the A
ECM memory.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
ory is erased. Procedures for clearing the ECM memory are described in EC-43, "HOW TO ERASE EMIS-
EC
SION-RELATED DIAGNOSTIC INFORMATION" .
SYSTEM READINESS TEST (SRT) CODE
System Readiness Test (SRT) code is specified in Mode 1 of ISO 15031-5. C
As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and com-
ponents. Completion must be verified in order for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use D
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains E
“CMPLT” until the self-diagnosis memory is erased.
Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.
F
NOTE:
The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-
ory power supply is interrupted for several hours.
If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con- G
tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.
NOTE: H
If MI is ON during the state emissions inspection, the vehicle is also returned to the customer untested even
though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and
DTC (No DTCs) before the inspection. I
SRT Item
The table below shows required self-diagnostic items to set the SRT to “CMPLT”.
J
SRT item Perfor-
Corresponding DTC
(CONSULT-II indica- mance Pri- Required self-diagnostic items to set the SRT to “CMPLT”
No.
tion) ority*
CATALYST 2 Three way catalyst function P0420, P0430 K
HO2S 1 A/F sensor 1 P1278, P1288
A/F sensor 1 P1279, P1289
L
Heated oxygen sensor 2 P0139, P0159
Heated oxygen sensor 2 P1146, P1166
Heated oxygen sensor 2 P1147, P1167 M
HO2S HTR 1 A/F sensor 1 heater P1031, P1032, P1051,
P1052
Heated oxygen sensor 2 heater P0037, P0038, P0057,
P0058
*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for
models with CONSULT-II.

SRT Set Timing

SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is
done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and
is shown in the table below.
Example
Self-diagnosis result Ignition cycle
Diagnosis
← ON → OFF ← ON → OFF ← ON → OFF ← ON →

EC-37
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

All OK Case 1 P0400 OK (1) — (1) OK (2) — (2)

P0402 OK (1) — (1) — (1) OK (2)
P1402 OK (1) OK (2) — (2) — (2)
SRT of EGR “CMPLT” “CMPLT” “CMPLT” “CMPLT”
Case 2 P0400 OK (1) — (1) — (1) — (1)
P0402 — (0) — (0) OK (1) — (1)
P1402 OK (1) OK (2) — (2) — (2)
SRT of EGR “INCMP” “INCMP” “CMPLT” “CMPLT”
NG exists Case 3 P0400 OK OK — —
P0402 — — — —
NG
P1402 NG — NG (Consecutive
NG)
(1st trip) DTC
1st trip DTC — 1st trip DTC
DTC (= MI “ON”)
SRT of EGR “INCMP” “INCMP” “INCMP” “CMPLT”
OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.

When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will
indicate “CMPLT”. → Case 1 above
When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate
“CMPLT” at the time the respective self-diagnoses have at least one OK result. → Case 2 above
If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indi-
cate “CMPLT”. → Case 3 above
The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each
self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state
emissions inspection, it is unnecessary for each self-diagnosis to be executed twice (Case 3) for the following
reasons:
● The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.
● The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.
● When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diagno-
sis memory must be erased from ECM after repair.
● If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.
NOTE:
SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out
prior to the state emission inspection even though the SRT indicates “CMPLT”.
SRT Service Procedure
If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review
the flowchart diagnostic sequence on the next page.

EC-38
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC

SEF573XB

*1 EC-36 *2 EC-39 *3 EC-40

How to Display SRT Code

WITH CONSULT-II
Selecting “SRT STATUS” in “DTC CONFIRMATION” mode with
CONSULT-II.
For items whose SRT codes are set, a “CMPLT” is displayed on the
CONSULT-II screen; for items whose SRT codes are not set,
“INCMP” is displayed.
A sample of CONSULT-II display for SRT code is shown at right.
“INCMP” means the self-diagnosis is incomplete and SRT is not set.
“CMPLT” means the self-diagnosis is complete and SRT is set.
WITH GST
Selecting Mode 1 with GST (Generic Scan Tool) PBIB0666E

EC-39
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

How to Set SRT Code

To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each
diagnosis may require a long period of actual driving under various conditions.
WITH CONSULT-II
Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table
on EC-37, "SRT Item" .
WITHOUT CONSULT-II
The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The
driving pattern should be performed one or more times to set all SRT codes.

EC-40
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

Driving Pattern
A

EC

PBIB1914E

EC-41
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

● The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv-
ing habits, etc.
Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the
shortest.
Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed
within zone A.
*: Normal conditions refer to the following:
● Sea level
● Flat road
● Ambient air temperature: 20 - 30°C (68 - 86°F)
● Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30°C (68 - 86°F)], diag-
nosis may also be performed.
Pattern 1:
● The engine is started at the engine coolant temperature of −10 to 35°C (14 to 95°F)
(where the voltage between the ECM terminal 73 and ground is 3.0 - 4.3V).
● The engine must be operated at idle speed until the engine coolant temperature is greater than
70°C (158°F) (where the voltage between the ECM terminal 73 and ground is lower than 1.4V).
Pattern 2:
● When steady-state driving is performed again even after it is interrupted, each diagnosis can be con-
ducted. In this case, the time required for diagnosis may be extended.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal
and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h
(56 MPH) again.
*2: Checking the vehicle speed with GST is advised.
TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)
The following is the information specified in Mode 6 of ISO 15031-5.
The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.
Test value (GST
SRT item Self-diagnostic test item DTC display) Test limit
TID CID
P0420 01H 01H Max.
Three way catalyst function (Bank 1)
P0420 02H 81H Min.
CATALYST
P0430 03H 02H Max.
Three way catalyst function (Bank 2)
P0430 04H 82H Min.

EC-42
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

Test value (GST

SRT item Self-diagnostic test item DTC display) Test limit A
TID CID
P1271 41H 8EH Min.
EC
P1272 42H 0EH Max.
P1273 43H 0EH Max.
P1274 44H 8EH Min. C
A/F sensor 1 (Bank 1)
P1278 45H 8EH Min.
P1276 46H 0EH Max.
D
P1276 47H 8EH Min.
P1279 48H 8EH Min.
P1281 4CH 8FH Min. E
P1282 4DH 0FH Max.
P1283 4EH 0FH Max.
P1284 4FH 8FH Min. F
HO2S A/F sensor 1 (Bank 2)
P1288 50H 8FH Min.
P1286 51H 0FH Max.
G
P1286 52H 8FH Min.
P1289 53H 8FH Min.
P0139 19H 86H Min. H
P1147 1AH 86H Min.
Heated oxygen sensor 2 (Bank 1)
P1146 1BH 06H Max.
I
P0138 1CH 06H Max.
P0159 21H 87H Min.
P1167 22H 87H Min. J
Heated oxygen sensor 2 (Bank 2)
P1166 23H 07H Max.
P0158 24H 07H Max.
K
P1032 57H 10H Max.
A/F sensor 1 heater (Bank 1)
P1031 58H 90H Min.
P1052 59H 11H Max. L
A/F sensor 1 heater (Bank 2)
P1051 5AH 91H Min.
HO2S HTR
P0038 2DH 0AH Max.
Heated oxygen sensor 2 heater (Bank 1) M
P0037 2EH 8AH Min.
P0058 2FH 0BH Max.
Heated oxygen sensor 2 heater (Bank 2)
P0057 30H 8BH Min.

HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION

How to Erase DTC
WITH CONSULT-II
The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF-
DIAG RESULTS” mode with CONSULT-II.
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Touch “ENGINE”.
3. Touch “SELF-DIAG RESULTS”.

EC-43
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

4. Touch “ERASE”. (The DTC in the ECM will be erased.)

PBIB1656E

WITH GST
The emission related diagnostic information in the ECM can be erased by selecting Mode 4 with GST.
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Select Mode 4 with GST (Generic Scan Tool).
NO TOOLS
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once.
2. Wait at least 10 seconds and then turn it ON (engine stopped) again.
3. Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. Refer to
EC-47, "HOW TO SWITCH DIAGNOSTIC TEST MODE" .
● If the battery is disconnected, the emission-related diagnostic information will be lost within 24
hours.
● The following data are cleared when the ECM memory is erased.
– Diagnostic trouble codes
– 1st trip diagnostic trouble codes
– Freeze frame data
– 1st trip freeze frame data
– System readiness test (SRT) codes
– Test values
– Others
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.

EC-44
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

NATS (Nissan Anti-theft System) EBS010F7

A
● If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card. EC
Refer to BL-103, "NATS (NISSAN ANTI-THEFT SYSTEM)" .
● Confirm no self-diagnostic results of NATS is displayed
before touching “ERASE” in “SELF-DIAG RESULTS” mode C
with CONSULT-II.
● When replacing ECM, initialization of NATS system and reg-
istration of all NATS ignition key IDs must be carried out D
with CONSULT-II using NATS program card. SEF543X

Therefore, be sure to receive all keys from vehicle owner.

Regarding the procedures of NATS initialization and NATS ignition key ID registration, refer to
CONSULT-II operation manual, NATS. E

Malfunction Indicator (MI) EBS010F8

DESCRIPTION F
The MI is located on the instrument panel.
1. The MI will light up when the ignition switch is turned ON without
the engine running. This is a bulb check. G
If the MI does not light up, refer to DI-73, "WARNING LAMPS" ,
or see EC-508 .
2. When the engine is started, the MI should go off.
H
If the MI remains on, the on board diagnostic system has
detected an engine system malfunction.

I
SAT652J

EC-45
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

ON BOARD DIAGNOSTIC SYSTEM FUNCTION

The on board diagnostic system has the following four functions.
Diagnostic Test KEY and ENG. Function Explanation of Function
Mode Status
Mode I Ignition switch in BULB CHECK This function checks the MI bulb for damage (blown, open
ON position circuit, etc.).
If the MI does not come on, check MI circuit.

Engine stopped

Engine running MALFUNCTION This is a usual driving condition. When a malfunction is

WARNING detected twice in two consecutive driving cycles (two trip
detection logic), the MI will light up to inform the driver that
a malfunction has been detected.
The following malfunctions will light up or blink the MI in
the 1st trip.
● Misfire (Possible three way catalyst damage)
● One trip detection diagnoses
Mode II Ignition switch in SELF-DIAGNOSTIC This function allows DTCs and 1st trip DTCs to be read.
ON position RESULTS

Engine stopped

When there is an open circuit on MI circuit, the ECM cannot warn the driver by lighting MI up when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MI circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MI circuit are detected and demands the
driver to repair the malfunction.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut

MI Flashing Without DTC

If the ECM is in Diagnostic Test Mode II, MI may flash when engine is running. In this case, check ECM diag-
nostic test mode. EC-47, "HOW TO SWITCH DIAGNOSTIC TEST MODE" .
How to switch the diagnostic test (function) modes, and details of the above functions are described later. EC-
47, "HOW TO SWITCH DIAGNOSTIC TEST MODE" .
The following emission-related diagnostic information is cleared when the ECM memory is erased.
● Diagnostic trouble codes
● 1st trip diagnostic trouble codes
● Freeze frame data
● 1st trip freeze frame data
● System readiness test (SRT) codes
● Test values
● Others

EC-46
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

HOW TO SWITCH DIAGNOSTIC TEST MODE

NOTE: A
● It is better to count the time accurately with a clock.
● It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction. EC
● Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.
How to Set Diagnostic Test Mode II (Self-diagnostic Results)
C
1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal. D
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MI starts
blinking. E
4. Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).
F

PBIB0092E I
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to EC-47, "How to Set Diagnostic Test
Mode II (Self-diagnostic Results)" . J
2. Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed. K
DIAGNOSTIC TEST MODE I — BULB CHECK
In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to DI-73,
L
"WARNING LAMPS" or see EC-508 .
DIAGNOSTIC TEST MODE I — MALFUNCTION WARNING
MI Condition M
ON When the malfunction is detected.
OFF No malfunction.
These DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS)

EC-47
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

DIAGNOSTIC TEST MODE II — SELF-DIAGNOSTIC RESULTS

In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MI as shown below.
The DTC and 1st trip DTC are displayed at the same time. If the MI does not illuminate in diagnostic test mode
I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MI illumi-
nates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are dis-
played, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These unidentified
codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for how to read a
code.

PBIA3905E

A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated
by the number of ten flashes. The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds
consisting of an ON (0.6-second) - OFF (0.6-second) cycle.
The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle.
A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later
numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one trouble code to another occurs at an interval of 1.8-second OFF.
In this way, all the detected malfunctions are classified by their DTC numbers. The DTC 0000 refers to no mal-
function. (See EC-7, "INDEX FOR DTC" )
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to EC-
47, "How to Erase Diagnostic Test Mode II (Self-diagnostic Results)" .
● If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours.
● Be careful not to erase the stored memory before starting trouble diagnoses.

EC-48
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

OBD System Operation Chart EBS010F9

RELATIONSHIP BETWEEN MI, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS A
● When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are
stored in the ECM memory.
● When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are EC
stored in the ECM memory, and the MI will come on. For details, refer to EC-32, "Two Trip Detection
Logic" .
● The MI will go off after the vehicle is driven 3 times with no malfunction. The drive is counted only when C
the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting,
the counter will reset.
● The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A) D
without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and
Fuel Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times
(driving pattern C) without the same malfunction recurring. The “TIME” in “SELF-DIAGNOSTIC
RESULTS” mode of CONSULT-II will count the number of times the vehicle is driven. E
● The 1st trip DTC is not displayed when the self-diagnosis results in OK for the 2nd trip.
SUMMARY CHART F
Items Fuel Injection System Misfire Other
MI (goes off) 3 (pattern B) 3 (pattern B) 3 (pattern B)
DTC, Freeze Frame Data (no
G
80 (pattern C) 80 (pattern C) 40 (pattern A)
display)
1st Trip DTC (clear) 1 (pattern C), *1 1 (pattern C), *1 1 (pattern B)
H
1st Trip Freeze Frame Data
*1, *2 *1, *2 1 (pattern B)
(clear)
For details about patterns B and C under “Fuel Injection System” and “Misfire”, see EC-51 .
For details about patterns A and B under “Other”, see EC-53 . I
*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunction is detected in the 2nd trip.
J

EC-49
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

RELATIONSHIP BETWEEN MI, DTC, 1ST TRIP DTC AND DRIVING PATTERNS FOR “MISFIRE ”
<EXHAUST QUALITY DETERIORATION>, “FUEL INJECTION SYSTEM”

SEF392S

*1: When the same malfunction is *2: MI will go off after vehicle is driven 3 *3: When the same malfunction is
detected in two consecutive trips, MI times (pattern B) without any mal- detected in two consecutive trips, the
will light up. functions. DTC and the freeze frame data will
be stored in ECM.
*4: The DTC and the freeze frame data *5: When a malfunction is detected for *6: The 1st trip DTC and the 1st trip
will not be displayed any longer after the first time, the 1st trip DTC and freeze frame data will be cleared at
vehicle is driven 80 times (pattern C) the 1st trip freeze frame data will be the moment OK is detected.
without the same malfunction. (The stored in ECM.
DTC and the freeze frame data still
remain in ECM.)
*7: When the same malfunction is *8: 1st trip DTC will be cleared when
detected in the 2nd trip, the 1st trip vehicle is driven once (pattern C)
freeze frame data will be cleared. without the same malfunction after
DTC is stored in ECM.

EC-50
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

EXPLANATION FOR DRIVING PATTERNS FOR “MISFIRE <EXHAUST QUALITY DETERIORA-

TION>”, “FUEL INJECTION SYSTEM” A
<Driving Pattern B>
Driving pattern B means the vehicle operation as follows:
All components and systems should be monitored at least once by the OBD system. EC
● The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
● The B counter will be counted up when driving pattern B is satisfied without any malfunction.
● The MI will go off when the B counter reaches 3. (*2 in OBD SYSTEM OPERATION CHART) C

<Driving Pattern C>

Driving pattern C means the vehicle operation as follows: D
The following conditions should be satisfied at the same time:
Engine speed: (Engine speed in the freeze frame data) ±375 rpm
Calculated load value: (Calculated load value in the freeze frame data) x (1±0.1) [%]
Engine coolant temperature (T) condition: E
● When the freeze frame data shows lower than 70°C (158°F), T should be lower than 70°C (158°F).
● When the freeze frame data shows higher than or equal to 70°C (158°F), T should be higher than or equal
to 70°C (158°F). F
Example:
If the stored freeze frame data is as follows:
Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperature: 80°C (176°F) G
To be satisfied with driving pattern C, the vehicle should run under the following conditions:
Engine speed: 475 - 1,225 rpm, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70°C
(158°F) H
● The C counter will be cleared when the malfunction is detected regardless of vehicle conditions above.
● The C counter will be counted up when vehicle conditions above is satisfied without the same malfunction.
● The DTC will not be displayed after C counter reaches 80. I
● The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC
is stored in ECM.
J

EC-51
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

RELATIONSHIP BETWEEN MI, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPT FOR
“MISFIRE <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”

SEF393S

*1: When the same malfunction is *2: MI will go off after vehicle is driven 3 *3: When the same malfunction is
detected in two consecutive trips, MI times (pattern B) without any mal- detected in two consecutive trips, the
will light up. functions. DTC and the freeze frame data will
be stored in ECM.
*4: The DTC and the freeze frame data *5: When a malfunction is detected for *6: 1st trip DTC will be cleared after
will not be displayed any longer after the first time, the 1st trip DTC and vehicle is driven once (pattern B)
vehicle is driven 40 times (pattern A) the 1st trip freeze frame data will be without the same malfunction.
without the same malfunction. stored in ECM.
(The DTC and the freeze frame data
still remain in ECM.)
*7: When the same malfunction is
detected in the 2nd trip, the 1st trip
freeze frame data will be cleared.

EC-52
 ON BOARD DIAGNOSTIC (OBD) SYSTEM

EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE <EXHAUST QUALITY

DETERIORATION>”, “FUEL INJECTION SYSTEM” A
<Driving Pattern A>

EC

G
AEC574

● The A counter will be cleared when the malfunction is detected regardless of (1) - (4).
● The A counter will be counted up when (1) - (4) are satisfied without the same malfunction. H
● The DTC will not be displayed after the A counter reaches 40.
<Driving Pattern B>
I
Driving pattern B means the vehicle operation as follows:
All components and systems should be monitored at least once by the OBD system.
● The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
J
● The B counter will be counted up when driving pattern B is satisfied without any malfunctions.
● The MI will go off when the B counter reaches 3 (*2 in OBD SYSTEM OPERATION CHART).
K

EC-53
 TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS PFP:00004

Trouble Diagnosis Introduction EBS010FA

INTRODUCTION
The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.

MEF036D

It is much more difficult to diagnose an incident that occurs intermit-

tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.

SEF233G

A visual check only may not find the cause of the incidents. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the Work Flow on EC-55 .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “Diagnostic Worksheet” like the exam-
ple on EC-57 should be used.
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
SEF234G
cally controlled engine vehicle.

EC-54
 TROUBLE DIAGNOSIS

WORK FLOW
Flow Chart A

EC

PBIB1927E

*1 If time data of “SELF-DIAG *2 If the incident cannot be verified, per- *3 If the on board diagnostic system
RESULTS” is other than [0] or [1t], form EC-109, "TROUBLE DIAGNO- cannot be performed, check main
perform EC-109, "TROUBLE DIAG- SIS FOR INTERMITTENT power supply and ground circuit.
NOSIS FOR INTERMITTENT INCI- INCIDENT" . Refer to EC-110, "POWER SUPPLY
DENT" . CIRCUIT FOR ECM" .
*4 If malfunctioning part cannot be *5 EC-41 *6 EC-105
detected, perform EC-109, "TROU-
BLE DIAGNOSIS FOR INTERMIT-
TENT INCIDENT" .

EC-55
 TROUBLE DIAGNOSIS

Description for Work Flow

STEP DESCRIPTION
Get detailed information about the conditions and the environment when the incident/symptom occurred using the
STEP I
DIAGNOSTIC WORK SHEET, EC-56 .
Before confirming the concern, check and write down (print out using CONSULT-II or GST) the (1st trip) DTC and the
(1st trip) freeze frame data, then erase the DTC and the data. (Refer to EC-43 .) The (1st trip) DTC and the (1st trip)
freeze frame data can be used when duplicating the incident at STEP III & IV.
STEP II If the incident cannot be verified, perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
Study the relationship between the cause, specified by (1st trip) DTC, and the symptom described by the customer.
(The Symptom Matrix Chart will be useful. See EC-65 .)
Also check related service bulletins for information.
Try to confirm the symptom and under what conditions the incident occurs.
The DIAGNOSTIC WORK SHEET and the freeze frame data are useful to verify the incident. Connect CONSULT-II
STEP III to the vehicle in DATA MONITOR (AUTO TRIG) mode and check real time diagnosis results.
If the incident cannot be verified, perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
If the malfunction code is detected, skip STEP IV and perform STEP V.
Try to detect the (1st trip) DTC by driving in (or performing) the DTC Confirmation Procedure. Check and read the (1st
trip) DTC and (1st trip) freeze frame data by using CONSULT-II or GST.
During the (1st trip) DTC verification, be sure to connect CONSULT-II to the vehicle in DATA MONITOR (AUTO TRIG)
mode and check real time diagnosis results.
STEP IV
If the incident cannot be verified, perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
In case the DTC Confirmation Procedure is not available, perform the Overall Function Check instead. The (1st trip)
DTC cannot be displayed by this check, however, this simplified check is an effective alternative.
The NG result of the Overall Function Check is the same as the (1st trip) DTC detection.
Take the appropriate action based on the results of STEP I through IV.
If the malfunction code is indicated, proceed to TROUBLE DIAGNOSIS FOR DTC PXXXX.
STEP V
If the normal code is indicated, proceed to the BASIC INSPECTION. (Refer to EC-60 .) Then perform inspections
according to the Symptom Matrix Chart. (Refer to EC-65 .)
Identify where to begin diagnosis based on the relationship study between symptom and possible causes. Inspect the
system for mechanical binding, loose connectors or wiring damage using (tracing) Harness Layouts.
Gently shake the related connectors, components or wiring harness with CONSULT-II set in “DATA MONITOR
(AUTO TRIG)” mode.
Check the voltage of the related ECM terminals or monitor the output data from the related sensors with CONSULT-II.
Refer to EC-77 , EC-99 .
STEP VI
The Diagnostic Procedure in EC section contains a description based on open circuit inspection. A short circuit
inspection is also required for the circuit check in the Diagnostic Procedure. For details, refer to Circuit Inspection in
GI-24, "How to Perform Efficient Diagnosis for an Electrical Incident" .
Repair or replace the malfunction parts.
If malfunctioning part cannot be detected, perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT" .
Once you have repaired the circuit or replaced a component, you need to run the engine in the same conditions and
circumstances which resulted in the customer's initial complaint.
Perform the DTC Confirmation Procedure and confirm the normal code [DTC No. P0000] is detected. If the incident is
STEP VII
still detected in the final check, perform STEP VI by using a method different from the previous one.
Before returning the vehicle to the customer, be sure to erase the unnecessary (already fixed) (1st trip) DTC in ECM.
(Refer to EC-43, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .)

DIAGNOSTIC WORKSHEET
Description
There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about a incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one on the next page in order
to organize all the information for troubleshooting.
Some conditions may cause the MI to come on steady or blink and
DTC to be detected. Examples:
● Vehicle ran out of fuel, which caused the engine to misfire. SEF907L

EC-56
 TROUBLE DIAGNOSIS

● Fuel filler cap was left off or incorrectly screwed on, allowing fuel to evaporate into the atmosphere.
A
Worksheet Sample

EC

MTBL0017

EC-57
 TROUBLE DIAGNOSIS

DTC Inspection Priority Chart EBS010FB

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 and/or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-121 .
Priority Detected items (DTC)
1 ● U1000 U1001 CAN communication line
● P0102 P0103 Mass air flow sensor
● P0112 P0113 Intake air temperature sensor
● P0117 P0118 Engine coolant temperature sensor
● P0122 P0123 P0222 P0223 P1225 P1226 P1229 P2135 Throttle position sensor
● P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
● P0327 P0328 Knock sensor
● P0335 Crankshaft position sensor (POS)
● P0340 P0345 Camshaft position sensor (PHASE)
● P0500 Vehicle speed sensor
● P0605 ECM
● P1610 - P1615 NATS
● P1706 Park/Neutral position (PNP) switch
2 ● P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater
● P0138 P0139 P0158 P0159 P1146 P1147 P1166 P1167 Heated oxygen sensor 2
● P0444 P0445 EVAP canister purge volume control solenoid valve
● P0550 Power steering pressure sensor
● P1031 P1032 P1051 P1052 A/F sensor 1 heater
● P1065 ECM power supply
● P1111 P1136 Intake valve timing control solenoid valve
● P1122 Electric throttle control function
● P1124 P1126 P1128 Electric throttle control actuator
● P1217 Engine over temperature (OVERHEAT)
● P1271 P1272 P1273 P1274 P1276 P1278 P1279 P1281 P1282 P1283 P1284 P1286 P1288 P1289 A/F sensor 1
● P1805 Brake switch
3 ● P0011 P0021 Intake valve timing control
● P0171 P0172 P0174 P0175 Fuel injection system function
● P0300 - P0306 Misfire
● P0420 P0430 Three way catalyst function
● P1121 Electric throttle control actuator
● P1211 TCS control unit
● P1212 TCS communication line
● P1564 ASCD steering switch
● P1572 ASCD brake switch
● P1574 ASCD vehicle speed sensor

EC-58
 TROUBLE DIAGNOSIS

Fail-safe Chart EBS010FC

A
When the DTC listed below is detected, the ECM enters fail-safe mode and the MI lights up.
DTC No. Detected items Engine operating condition in fail-safe mode
P0102 Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut. EC
P0103
P0117 Engine coolant tempera- Engine coolant temperature will be determined by ECM based on the time after turning
P0118 ture sensor circuit ignition switch ON or START.
C
CONSULT-II displays the engine coolant temperature decided by ECM.
Engine coolant temperature decided
Condition
(CONSULT-II display)
D
Just as ignition switch is turned
40°C (104°F)
ON or Start
More than approx. 4 minutes after
ignition ON or Start
80°C (176°F) E

40 - 80°C (104 - 176°F)

Except as shown above
(Depends on the time)
F
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122 Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
P0123 order for the idle position to be within +10 degrees. G
P0222 The ECM regulates the opening speed of the throttle valve to be slower than the normal
P0223 condition.
P2135 So, the acceleration will be poor.
H
P1121 Electric throttle control (When electric throttle control actuator does not function properly due to the return spring
actuator malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm. I
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less. J
(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops,
the engine stalls.
K
The engine can restart in N or P position, and engine speed will not exceed 1,000 rpm or
more.
P1122 Electric throttle control ECM stops the electric throttle control actuator control, throttle valve is maintained at a
function fixed opening (approx. 5 degrees) by the return spring. L
P1124 Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
P1126 fixed opening (approx. 5 degrees) by the return spring.
P1128 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
M
fixed opening (approx. 5 degrees) by the return spring.
P1229 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2122 Accelerator pedal position The ECM controls the electric throttle control actuator in regulating the throttle opening in
P2123 sensor order for the idle position to be within +10 degrees.
P2127 The ECM regulates the opening speed of the throttle valve to be slower than the normal
P2128 condition.
P2138 So, the acceleration will be poor.

● When there is an open circuit on MI circuit, the ECM cannot warn the driver by lighting MI up when there
is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected
as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MI circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MI circuit are detected and demands
the driver to repair the malfunction.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut

EC-59
 TROUBLE DIAGNOSIS

Basic Inspection EBS010FD

1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
– Harness connectors for improper connections
– Wiring harness for improper connections, pinches and cut
– Vacuum hoses for splits, kinks and improper connections
– Hoses and ducts for leaks
– Air cleaner clogging
– Gasket
3. Confirm that electrical or mechanical loads are not applied.
– Headlamp switch is OFF. SEF983U

– Air conditioner switch is OFF.

– Rear window defogger switch is OFF.
– Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.

SEF976U

5. Run engine at about 2,000 rpm for about 2 minutes under no-
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

SEF977U

2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.

>> GO TO 3.

EC-60
 TROUBLE DIAGNOSIS

3. CHECK TARGET IDLE SPEED A

With CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
EC
2. Rev engine (2,000 to 3,000 rpm) two or three times under no-
load, then run engine at idle speed for about 1 minute.

E
PBIA8513J

3. Read idle speed in “DATA MONITOR” mode with CONSULT-II.

650 ± 50 rpm F

SEF058Y

I
Without CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed for about J
1 minute.
3. Check idle speed.
K
650 ± 50 rpm
OK or NG
OK >> GO TO 10. L
NG >> GO TO 4.

4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING M

1. Stop engine.
2. Perform EC-27, "Accelerator Pedal Released Position Learning" .

>> GO TO 5.

5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform EC-27, "Throttle Valve Closed Position Learning" .

>> GO TO 6.

EC-61
 TROUBLE DIAGNOSIS

6. PERFORM IDLE AIR VOLUME LEARNING

Refer to EC-27, "Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes >> GO TO 7.
No >> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.

7. CHECK TARGET IDLE SPEED AGAIN

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
650 ± 50 rpm
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
650 ± 50 rpm
OK or NG
OK >> GO TO 10.
NG >> GO TO 8.

8. DETECT MALFUNCTIONING PART

Check the following.
● Check camshaft position sensor (PHASE) and circuit. Refer to EC-221 .
● Check crankshaft position sensor (POS) and circuit. Refer to EC-215 .
OK or NG
OK >> GO TO 9.
NG >> 1. Repair or replace.
2. GO TO 4.

9. CHECK ECM FUNCTION

1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is the rarely the case.)
2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to EC-45, "NATS
(Nissan Anti-theft System)" .

>> GO TO 4.

EC-62
 TROUBLE DIAGNOSIS

10. CHECK IGNITION TIMING A

1. Run engine at idle.
2. Check ignition timing with a timing light.
EC
15 ± 5° BTDC
OK or NG
OK >> INSPECTION END C
NG >> GO TO 11.

PBIB1098E
E
11. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
F
2. Perform EC-27, "Accelerator Pedal Released Position Learning" .

>> GO TO 12. G

12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform EC-27, "Throttle Valve Closed Position Learning" . H

>> GO TO 13.
I
13. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-27, "Idle Air Volume Learning" . J
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes >> GO TO 14. K
No >> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
L
14. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature. M
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
650 ± 50 rpm
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
650 ± 50 rpm
OK or NG
OK >> GO TO 15.
NG >> GO TO 17.

EC-63
 TROUBLE DIAGNOSIS

15. CHECK IGNITION TIMING AGAIN

1. Run engine at idle.
2. Check ignition timing with a timing light.
15 ± 5° BTDC
OK or NG
OK >> INSPECTION END
NG >> GO TO 16.

PBIB1098E

16. CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to EM-54, "TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.

17. DETECT MALFUNCTIONING PART

Check the following.
● Check camshaft position sensor (PHASE) and circuit. Refer to EC-221 .
● Check crankshaft position sensor (POS) and circuit. Refer to EC-215 .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.

18. CHECK ECM FUNCTION

1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is the rarely the case.)
2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to EC-45, "NATS
(Nissan Anti-theft System)" .

>> GO TO 4.

EC-64
 TROUBLE DIAGNOSIS

Symptom Matrix Chart EBS010FE

SYSTEM — BASIC ENGINE CONTROL SYSTEM A

SYMPTOM

OVERHEATS/WATER TEMPERATURE HIGH

EC

LACK OF POWER/POOR ACCELERATION

HARD/NO START/RESTART (EXCP. HA)

BATTERY DEAD (UNDER CHARGE)

HESITATION/SURGING/FLAT SPOT

EXCESSIVE FUEL CONSUMPTION

EXCESSIVE OIL CONSUMPTION

C

SPARK KNOCK/DETONATION

SLOW/NO RETURN TO IDLE

Reference

ROUGH IDLE/HUNTING
D

HIGH IDLE/LOW IDLE

page

IDLING VIBRATION
ENGINE STALL E

F
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 1 1 2 3 2 2 2 3 2 EC-482
G
Fuel pressure regulator system 3 3 4 4 4 4 4 4 4 4 EC-29
Injector circuit 1 1 2 3 2 2 2 2 EC-476
Evaporative emission system 3 3 4 4 4 4 4 4 4 4 EC-510 H
Air Positive crankcase ventilation sys-
4 4 4 4 4 4 4 4 1 EC-514
tem 3 3
Incorrect idle speed adjustment 1 1 1 1 1 EC-60 I
EC-273,
EC-275 ,
Electric throttle control actuator 1 1 2 3 3 2 2 2 2 2 2
EC-282 , J
EC-287
Ignition Incorrect ignition timing adjustment 3 3 1 1 1 1 1 1 EC-60
Ignition circuit 1 1 2 2 2 2 2 2 EC-458 K
Main power supply and ground circuit 2 2 3 3 3 3 3 2 3 EC-110
Mass air flow sensor circuit 2 EC-135
1 L
Engine coolant temperature sensor circuit 3 3 EC-149
EC-339,
EC-346 ,
EC-353 , M
3
A/F sensor 1 circuit EC-362 ,
EC-371 ,
1 2 2 2 2 2 EC-379 ,
EC-391
EC-154,
EC-197 ,
EC-331 ,
Throttle position sensor circuit
EC-333 ,
2 2 EC-335 ,
EC-445
EC-433,
Accelerator pedal position sensor circuit 3 2 1 EC-439 ,
EC-451
Knock sensor circuit 2 3 EC-210
Crankshaft position sensor (POS) circuit 2 2 EC-215
Camshaft position sensor (PHASE) circuit 3 2 EC-221

EC-65
 TROUBLE DIAGNOSIS

SYMPTOM

OVERHEATS/WATER TEMPERATURE HIGH

LACK OF POWER/POOR ACCELERATION
HARD/NO START/RESTART (EXCP. HA)

BATTERY DEAD (UNDER CHARGE)

HESITATION/SURGING/FLAT SPOT

EXCESSIVE FUEL CONSUMPTION

EXCESSIVE OIL CONSUMPTION

SPARK KNOCK/DETONATION

SLOW/NO RETURN TO IDLE

Reference

ROUGH IDLE/HUNTING
HIGH IDLE/LOW IDLE
page

IDLING VIBRATION
ENGINE STALL

Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

Vehicle speed signal circuit 2 3 3 3 EC-240
Power steering pressure sensor circuit 2 3 3 EC-242
EC-247,
ECM 2 2 3 3 3 3 3 3 3 3 3
EC-258
Intake valve timing control solenoid valve cir-
3 2 1 3 2 2 3 3 EC-262
cuit
PNP switch circuit 3 3 3 3 3 EC-423
Refrigerant pressure sensor circuit 2 3 3 4 EC-489
Electrical load signal circuit 3 EC-494
Air conditioner circuit 2 2 3 3 3 3 3 3 3 3 2 ATC-35
ESP/TCS/ABS control unit 4 BRC-11
1 - 6: The numbers refer to the order of inspection.
(continued on next page)

EC-66
 TROUBLE DIAGNOSIS

SYSTEM — ENGINE MECHANICAL & OTHER

SYMPTOM
A

OVERHEATS/WATER TEMPERATURE HIGH

LACK OF POWER/POOR ACCELERATION
HARD/NO START/RESTART (EXCP. HA)
EC

BATTERY DEAD (UNDER CHARGE)

HESITATION/SURGING/FLAT SPOT

EXCESSIVE FUEL CONSUMPTION

EXCESSIVE OIL CONSUMPTION

SPARK KNOCK/DETONATION
C

SLOW/NO RETURN TO IDLE

Reference

ROUGH IDLE/HUNTING
HIGH IDLE/LOW IDLE
page

IDLING VIBRATION
D

ENGINE STALL E

Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA F

Fuel Fuel tank FL-10
5
Fuel piping 5 5 5 5 5 5 EM-36
G
Vapor lock —
5
Valve deposit —
Poor fuel (Heavy weight gaso- 5 5 5 5 5 5 5 H
—
line, Low octane)
Air Air duct EM-14
Air cleaner EM-14 I
Air leakage from air duct
(Mass air flow sensor — electric EM-14
5 5 5 5 5 5
throttle control actuator) J
5 5 5 5
Electric throttle control actuator EM-16
Air leakage from intake manifold/ EM-16,
Collector/Gasket EM-21 K
Cranking Battery SC-4
1 1 1 1 1 1 1
Generator circuit SC-29
L
Starter circuit 3 1 SC-15
Signal plate 6 EM-106
PNP switch 4 MT-12 M
Engine Cylinder head
5 5 5 5 5 5 5 5 EM-89
Cylinder head gasket 4 3
Cylinder block
Piston 4
Piston ring
6 6 6 6 6 6 6 6 EM-106
Connecting rod
Bearing
Crankshaft
Valve Timing chain EM-54
mecha-
Camshaft EM-74
nism
Intake valve timing control 5 5 5 5 5 5 5 5 EM-54
Intake valve
3 EM-89
Exhaust valve

EC-67
 TROUBLE DIAGNOSIS

SYMPTOM

OVERHEATS/WATER TEMPERATURE HIGH

LACK OF POWER/POOR ACCELERATION
HARD/NO START/RESTART (EXCP. HA)

BATTERY DEAD (UNDER CHARGE)

HESITATION/SURGING/FLAT SPOT

EXCESSIVE FUEL CONSUMPTION

EXCESSIVE OIL CONSUMPTION

SPARK KNOCK/DETONATION

SLOW/NO RETURN TO IDLE

Reference

ROUGH IDLE/HUNTING
HIGH IDLE/LOW IDLE
page

IDLING VIBRATION
ENGINE STALL

Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

Exhaust Exhaust manifold/Tube/Muffler/
Gasket EM-23, EX-
5 5 5 5 5 5 5 5
2
Three way catalyst
Lubrica- EM-27, LU-
Oil pan/Oil strainer/Oil pump/Oil
tion 12 , LU-9 ,
filter/Oil gallery/Oil cooler 5 5 5 5 5 5 5 5 LU-10
Oil level (Low)/Filthy oil LU-6
Cooling CO-12,
Radiator/Hose/Radiator filler cap
CO-15
Thermostat 5 CO-25
Water pump 5 5 5 5 5 5 5 4 5 CO-21
Water gallery CO-27
Coolant level (Low)/Contami-
5 CO-9
nated coolant
BL-103 or
NATS (Nissan Anti-theft System) 1 1
EC-45
1 - 6: The numbers refer to the order of inspection.

EC-68
 TROUBLE DIAGNOSIS

Engine Control Component Parts Location EBS010FF

EC

PBIB1636E

EC-69
TROUBLE DIAGNOSIS

PBIB1062E

EC-70
TROUBLE DIAGNOSIS

EC

PBIB1906E

EC-71
TROUBLE DIAGNOSIS

PBIB1907E

PBIB1908E

EC-72
TROUBLE DIAGNOSIS

EC

PBIB1909E

EC-73
TROUBLE DIAGNOSIS

PBIB1928E

EC-74
 TROUBLE DIAGNOSIS

Circuit Diagram EBS010FG

EC

TBWT0520E

EC-75
TROUBLE DIAGNOSIS

TBWT0521E

EC-76
 TROUBLE DIAGNOSIS

ECM Harness Connector Terminal Layout EBS010FH

EC

PBIB1192E D

ECM Terminals and Reference Value EBS010FI

PREPARATION E
1. ECM is located behind the passenger side instrument lower
panel. For this inspection, remove passenger side instrument
lower panel.
F
2. Remove ECM harness connector.

H
PBIB1072E

3. When disconnecting ECM harness connector, loosen it with

levers as far as they will go as shown in the figure. I
4. Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.
● Use extreme care not to touch 2 pins at one time.
J
● Data is for comparison and may not be exact.

SEC406D
L
ECM INSPECTION TABLE
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. M
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
1 B ECM ground Engine ground
● Idle speed

Approximately 5V

[Engine is running]
A/F sensor 1 heater
2 GY/R ● Warm-up condition
(Bank 1)
● Idle speed

PBIB1584E

EC-77
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Throttle control motor relay BATTERY VOLTAGE
3 G [Ignition switch: ON]
power supply (11 - 14V)

0 - 14V

[Ignition switch: ON]

Throttle control motor ● Engine stopped
4 L/B
(Close) ● Shift lever: 1st
● Accelerator pedal is released

PBIB1104E

0 - 14V

[Ignition switch: ON]

Throttle control motor ● Engine stopped
5 L/Y
(Open) ● Shift lever: 1st
● Accelerator pedal is fully depressed

PBIB1105E

[Engine is running]
● Engine speed is below 3,600 rpm after the
following conditions are met.
– Engine: after warming up 0 - 1.0V
– Keeping the engine speed between 3,500
Heated oxygen sensor 2 and 4,000 rpm for 1 minute and at idle for 1
6 P/L
heater (bank 2) minute under no load.
[Ignition switch: ON]
● Engine stopped BATTERY VOLTAGE
[Engine is running] (11 - 14V)
● Engine speed is above 3,600 rpm.
[Engine is running]
BATTERY VOLTAGE
● Warm-up condition
(11 - 14V)
● Idle speed

7 - 12V
Intake valve timing control
10 W/G [Engine is running]
solenoid valve (bank 2)
● Warm-up condition
● When revving engine up to 2,500 rpm
quickly

PBIB1790E

[Engine is running]
BATTERY VOLTAGE
● Warm-up condition
(11 - 14V)
● Idle speed

7 - 12V
Intake valve timing control
11 P [Engine is running]
solenoid valve (bank 1)
● Warm-up condition
● When revving engine up to 2,500 rpm
quickly

PBIB1790E

EC-78
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage) A
COLOR
NO.
[Engine is running]
0.5 - 4.5V
Power steering pressure ● Steering wheel is being turned. EC
12 L/W
sensor [Engine is running]
0.4 - 0.8V
● Steering wheel is not being turned.
C
Approximately 1.6V
[Engine is running]
● Warm-up condition
● Idle speed D
NOTE:
The pulse cycle changes depending on rpm at
idle. E
Crankshaft position sensor PBIB1041E
13 W/L
(POS)
Approximately 1.4V
F
[Engine is running]
● Engine speed is 2,000 rpm.
G

PBIB1042E

H
1.0 - 4.0V
[Engine is running]
● Warm-up condition
● Idle speed I
NOTE:
The pulse cycle changes depending on rpm at
idle.
J
Camshaft position sensor PBIB1039E
14 R/L
(PHASE) (bank 2)
1.0 - 4.0V
K
[Engine is running]
● Engine speed is 2,000 rpm.
L

PBIB1040E

[Engine is running] M
15 W Knock sensor Approximately 2.5V
● Idle speed
16 LG/B Approximately 3.1V
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V

EC-79
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
BATTERY VOLTAGE
[Engine is running] (11 - 14V)
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.
21 SB Injector No. 5 SEC984C
22 R/Y Injector No. 3
23 R/B Injector No. 1 BATTERY VOLTAGE
(11 - 14V)

[Engine is running]
● Warm-up condition
● Engine speed is 2,000 rpm.

SEC985C

Approximately 5V

[Engine is running]
A/F sensor 1 heater
24 GY ● Warm-up condition
(Bank 1)
● Idle speed

PBIB1584E

[Engine is running]
● Engine speed is below 3,600 rpm after the
following conditions are met.
– Engine: after warming up 0 - 1.0V
– Keeping the engine speed between 3,500
Heated oxygen sensor 2 and 4,000 rpm for 1 minute and at idle for 1
25 P/B
heater (bank 1) minute under no load.
[Ignition switch: ON]
● Engine stopped BATTERY VOLTAGE
[Engine is running] (11 - 14V)
● Engine speed is above 3,600 rpm.

1.0 - 4.0V
[Engine is running]
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.
PBIB1039E
Camshaft position sensor
33 R
(PHASE) (bank 1)
1.0 - 4.0V

[Engine is running]
● Engine speed is 2,000 rpm.

PBIB1040E

EC-80
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage) A
COLOR
NO.
Approximately 0 - 4.8V
Intake air temperature sen-
34 Y/G [Engine is running] Output voltage varies with intake EC
sor
air temperature.
BATTERY VOLTAGE
[Engine is running] (11 - 14V) C
● Warm-up condition
● Idle speed
NOTE: D
The pulse cycle changes depending on rpm at
idle.
40 LG Injector No. 6
41 W/B Injector No. 4
SEC984C
E
42 B/R Injector No. 2 BATTERY VOLTAGE
(11 - 14V)

[Engine is running]
F
● Warm-up condition
● Engine speed is 2,000 rpm
G

SEC985C

BATTERY VOLTAGE H
(11 - 14V)

[Engine is running] I
● Idle speed

J
EVAP canister purge vol- SEC990C
45 G/W
ume control solenoid valve BATTERY VOLTAGE
(11 - 14V) K

[Engine is running]
● Engine speed is about 2,000 rpm (More L
than 100 seconds after starting engine).

SEC991C
M
Sensor power supply
47 W/R [Ignition switch: ON] Approximately 5V
(Throttle position sensor)
B
Sensor power supply
(LHD)
49 (Refrigerant pressure sen- [Ignition switch: ON] Approximately 5V
B/Y
sor)
(RHD)
[Ignition switch: ON]
● Engine stopped
More than 0.36V
● Shift lever: 1st
● Accelerator pedal fully released
50 G Throttle position sensor 1
[Ignition switch: ON]
● Engine stopped
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully depressed

EC-81
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
● Warm-up condition 1.1 - 1.5V
● Idle speed
51 OR Mass air flow sensor
[Engine is running]
● Warm-up condition 1.7 - 2.4V
● Engine speed is 2,500 rpm.
[Engine is running]
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are
55 L/B 0 - Approximately 1.0V
(bank 2) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
57 L Approximately 2.6V
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V

0 - 0.2V
[Engine is running]
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.
60 PU/W Ignition signal No. 5 SEC986C
61 L/R Ignition signal No. 3
62 Y/R Ignition signal No. 1 0.1 - 0.4V

[Engine is running]
● Warm-up condition
● Engine speed is 2,500 rpm.

SEC987C

[Engine is running]
Sensor ground
66 L ● Warm-up condition Approximately 0V
(Throttle position sensor)
● Idle speed
Sensor ground
(Mass air flow sensor / IAT [Engine is running]
sensor / ECT sensor /
67 B/W ● Warm-up condition Approximately 0V
Power steering pressure
sensor / ASCD steering ● Idle speed
switch)
Sensor power supply
68 R/W (Power steering pressure [Ignition switch: ON] Approximately 5V
sensor)

EC-82
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage) A
COLOR
NO.
[Ignition switch: ON]
● Engine stopped EC
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully released
69 Y Throttle position sensor 2 C
[Ignition switch: ON]
● Engine stopped
More than 0.36V
● Shift lever: 1st
D
● Accelerator pedal fully depressed
[Engine is running]
● Warm-up condition
70 G/R Refrigerant pressure sensor 1.0 - 4.0V E
● Both A/C switch and blower switch are ON.
(Compressor operates.)
Approximately 0 - 4.8V
Engine coolant temperature F
73 BR/Y [Engine is running] Output voltage varies with
sensor
engine coolant temperature.
[Engine is running]
G
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are
74 OR 0 - Approximately 1.0V H
(bank 1) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load. I
[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor)
● Idle speed J

0 - 0.2V
[Engine is running]
● Warm-up condition K
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at L
idle.
79 GY/R Ignition signal No. 6 SEC986C
80 GY Ignition signal No. 4
81 G/B Ignition signal No. 2 0.1 - 0.4V M

[Engine is running]
● Warm-up condition
● Engine speed is 2,500 rpm.

SEC987C

[Engine is running]
Sensor ground
82 G/Y ● Warm-up condition Approximately 0V
(APP sensor 1)
● Idle speed
[Engine is running]
Sensor ground
83 G/R ● Warm-up condition Approximately 0V
(APP sensor 2)
● Idle speed
[Ignition switch: ON] Approximately 5V - Battery volt-
85 LG Data link connector
● CONSULT-II or GST is disconnected. age (11 - 14V)

EC-83
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Approximately 1.1 - 2.3V
86 P CAN communication line [Ignition switch: ON] Output voltage varies with the
communication status.
Sensor power supply
90 LG [Ignition switch: ON] Approximately 5V
(APP sensor 1)
Sensor power supply
91 B/OR [Ignition switch: ON] Approximately 5V
(APP sensor 2)
Approximately 2.6 - 3.2V
94 L CAN communication line [Ignition switch: ON] Output voltage varies with the
communication status.
[Ignition switch: ON]
● Engine stopped 0.15 - 0.60V
Accelerator pedal position ● Accelerator pedal fully released
98 G/B
sensor 2 [Ignition switch: ON]
● Engine stopped 1.95 - 2.40V
● Accelerator pedal fully depressed
[Ignition switch: ON]
Approximately 4V
● ASCD steering switch: OFF
[Ignition switch: ON]
Approximately 0V
● CRUISE switch: Pressed
[Ignition switch: ON]
99 G/Y ASCD steering switch Approximately 1V
● CANCEL switch: Pressed
[Ignition switch: ON]
Approximately 2V
● COAST/SET switch: Pressed
[Ignition switch: ON]
Approximately 3V
● ACCEL/RESUME switch: Pressed
[Ignition switch: ON]
Approximately 0V
● Brake pedal is fully released
101 L/OR Stop lamp switch
[Ignition switch: ON] BATTERY VOLTAGE
● Brake pedal is depressed (11 - 14V)

[Ignition switch: ON]

Approximately 0V
● Shift lever: Neutral
102 BR/Y PNP switch
[Ignition switch: ON] BATTERY VOLTAGE
● Except the above gear position (11 - 14V)

BATTERY VOLTAGE
[Ignition switch: OFF]
104 SB Throttle control motor relay (11 - 14V)
[Ignition switch: ON] 0 - 1.0V
[Ignition switch: ON]
● Engine stopped 0.5 - 1.0V
Accelerator pedal position ● Accelerator pedal fully released
106 G/OR
sensor 1 [Ignition switch: ON]
● Engine stopped 3.9 - 4.7V
● Accelerator pedal fully depressed

EC-84
 TROUBLE DIAGNOSIS

TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage) A
COLOR
NO.
[Ignition switch: ON]
● Brake pedal and/or clutch pedal are Approximately 0V EC
depressed
108 B/R ASCD brake switch
[Ignition switch: ON]
BATTERY VOLTAGE
● Brake pedal and clutch pedal are fully (11 - 14V)
C
released
[Ignition switch: OFF] 0V
109 W/B Ignition switch BATTERY VOLTAGE D
[Ignition switch: ON]
(11 - 14V)
[Engine is running]
[Ignition switch: OFF] E
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L
(Self shut-off)
[Ignition switch: OFF] F
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
[Ignition switch: ON] G
● For 1 second after turning ignition switch ON 0 - 1.5V
[Engine is running]
113 LG/B Fuel pump relay
[Ignition switch: ON] H
BATTERY VOLTAGE
● More than 1 second after turning ignition (11 - 14V)
switch ON.

115 B/W [Engine is running] I

ECM ground Engine ground
116 B/R ● Idle speed
119 R/W
(LHD) J
BATTERY VOLTAGE
Y Power supply for ECM [Ignition switch: ON]
(11 - 14V)
(RHD)
120 P
K
Power supply for ECM BATTERY VOLTAGE
121 R/W [Ignition switch: OFF]
(Back-up) (11 - 14V)

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) L

CONSULT-II Function EBS010FJ

FUNCTION
M
Diagnostic test mode Function
This mode enables a technician to adjust some devices faster and more accurately by following the
Work support
indications on the CONSULT-II unit.
Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data
Self-diagnostic results
can be read and erased quickly.*
Data monitor Input/Output data in the ECM can be read.
Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the
Data monitor (SPEC)
other data monitor items can be read.
Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
Active test
shifts some parameters in a specified range.
DTC & SRT confirmation The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
Function test This mode is used to inform customers when their vehicle condition requires periodic maintenance.
ECM part number ECM part number can be read.
*: The following emission-related diagnostic information is cleared when the ECM memory is erased.
● Diagnostic trouble codes

EC-85
 TROUBLE DIAGNOSIS

● 1st trip diagnostic trouble codes

● Freeze frame data
● 1st trip freeze frame data
● System readiness test (SRT) codes
● Test values
● Others

ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION

DIAGNOSTIC TEST MODE
SELF-DIAGNOSTIC DTC & SRT
RESULTS DATA CONFIRMATION
Item WORK DATA
MONI- ACTIVE DTC
SUP- FREEZE MONI-
TOR TEST SRT WORK
PORT DTC*1 FRAME TOR
(SPEC) STATUS SUP-
DATA*2
PORT
Crankshaft position sensor (POS) × × × ×
Camshaft position sensor (PHASE) × × × ×
Mass air flow sensor × × ×
Engine coolant temperature sensor × × × × ×
A/F sensor 1 × × × × ×
Heated oxygen sensor 2 × × × × ×
Vehicle speed sensor × × × ×
ENGINE CONTROL COMPONENT PARTS

Accelerator pedal position sensor × × ×

Throttle position sensor × × ×
Intake air temperature sensor × × × ×
Knock sensor ×
INPUT

Refrigerant pressure sensor × ×

Closed throttle position switch
(accelerator pedal position sensor × ×
signal)
Air conditioner switch × ×
Park/neutral position (PNP) switch × × ×
Stop lamp switch × × ×
Power steering pressure sensor × × ×
Battery voltage × ×
Load signal × ×
ASCD steering switch × × ×
ASCD brake switch × × ×
ASCD clutch switch × × ×

EC-86
 TROUBLE DIAGNOSIS

DIAGNOSTIC TEST MODE

A
SELF-DIAGNOSTIC DTC & SRT
RESULTS DATA CONFIRMATION
Item WORK DATA
MONI- ACTIVE DTC
SUP- FREEZE MONI-
TOR TEST SRT WORK EC
PORT DTC*1 FRAME TOR
(SPEC) STATUS SUP-
DATA*2
PORT
Injectors × × × C
Power transistor (Ignition timing) × × ×
ENGINE CONTROL COMPONENT PARTS

Throttle control motor relay × × ×

D
Throttle control motor ×
EVAP canister purge volume con-
× × × ×
trol solenoid valve
E
OUTPUT

Air conditioner relay × ×

Fuel pump relay × × × ×
Cooling fan relay × × × × F
A/F sensor 1 heater × × × ×
Heated oxygen sensor 2 heater × × × ×
G
Intake valve timing control solenoid
× × × ×
valve
Calculated load value × × ×
H
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-88 . I
INSPECTION PROCEDURE
CAUTION: J
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Turn ignition switch OFF.
K
2. Connect “CONSULT-II” and “CONSULT-II CONVERTER” to
data link connector, which is located under driver side dash
panel near the hood opener handle.
L
3. Turn ignition switch ON.

PBIB1069E

4. Touch “START (NISSAN BASED VHCL)”.

MBIB0233E

EC-87
 TROUBLE DIAGNOSIS

5. Touch “ENGINE”.
If “ENGINE” is not indicated, go to GI-37, "CONSULT-II Data
Link Connector (DLC) Circuit" .

SEF995X

6. Perform each diagnostic test mode according to each service

procedure.
For further information, see the CONSULT-II Operation Manual.

SEF824Y

WORK SUPPORT MODE

Work Item
WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE ● FUEL PUMP WILL STOP BY TOUCHING “START” DUR- When releasing fuel pressure
ING IDLING. from fuel line
CRANK A FEW TIMES AFTER ENGINE STALLS.
IDLE AIR VOL LEARN ● THE IDLE AIR VOLUME THAT KEEPS THE ENGINE When learning the idle air volume
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.
SELF-LEARNING CONT ● THE COEFFICIENT OF SELF-LEARNING CONTROL When clearing the coefficient of
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF- self-learning control value
FICIENT.
TARGET IDLE RPM ADJ* ● IDLE CONDITION When setting target idle speed
TARGET IGN TIM ADJ* ● IDLE CONDITION When adjusting target ignition tim-
ing
*: This function is not necessary in the usual service procedure.

SELF-DIAG RESULTS MODE

Self Diagnostic Item
Regarding items of DTC and 1st trip DTC, refer to EC-7, "INDEX FOR DTC" .
Freeze Frame Data and 1st Trip Freeze Frame Data
Freeze frame data
Description
item*
DIAG TROUBLE
● The engine control component part/control system has a trouble code, it is displayed as PXXXX. (Refer to
CODE
EC-7, "INDEX FOR DTC" .)
[PXXXX]
FUEL SYS-B1 ● “Fuel injection system status” at the moment a malfunction is detected is displayed.
● One mode in the following is displayed.
Mode2: Open loop due to detected system malfunction
FUEL SYS-B2 Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop

EC-88
 TROUBLE DIAGNOSIS

Freeze frame data

Description
item* A
CAL/LD VALUE [%] ● The calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [°C]
● The engine coolant temperature at the moment a malfunction is detected is displayed. EC
or [°F]
L-FUEL TRM-B1 [%] ● “Long-term fuel trim” at the moment a malfunction is detected is displayed.
● The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
L-FUEL TRM-B2 [%] C
than short-term fuel trim.
S-FUEL TRM-B1 [%] ● “Short-term fuel trim” at the moment a malfunction is detected is displayed.
● The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
S-FUEL TRM-B2 [%]
schedule. D
ENGINE SPEED
● The engine speed at the moment a malfunction is detected is displayed.
[rpm]
E
VEHICL SPEED [km/
● The vehicle speed at the moment a malfunction is detected is displayed.
h] or [mph]
B/FUEL SCHDL
● The base fuel schedule at the moment a malfunction is detected is displayed. F
[msec]
INT/A TEMP SE [°C]
● The intake air temperature at the moment a malfunction is detected is displayed.
or [°F]
*: The items are the same as those of 1st trip freeze frame data. G

DATA MONITOR MODE

Monitored Item H
×: Applicable
CAN
ECM
MAIN DIAG
Monitored item INPUT I
SIG- SUP- Description Remarks
[Unit] SIG-
NALS PORT
NALS
MNTR
● Accuracy becomes poor if engine J
● Indicates the engine speed computed speed drops below the idle rpm.
from the signal of the crankshaft position
ENG SPEED [rpm] × × ● If the signal is interrupted while the
sensor (POS) and camshaft position
sensor (PHASE). engine is running, an abnormal K
value may be indicated.
● The signal voltage of the mass air flow ● When the engine is stopped, a
MAS A/F SE-B1 [V] × ×
sensor is displayed. certain value is indicated. L
● “Base fuel schedule” indicates the fuel
B/FUEL SCHDL injection pulse width programmed into
×
[msec] ECM, prior to any learned on board cor-
M
rection.
A/F ALPHA-B1 [%] × ● When the engine is stopped, a
● The mean value of the air-fuel ratio certain value is indicated.
feedback correction factor per cycle is ● This data also includes the data
A/F ALPHA-B2 [%] × indicated. for the air-fuel ratio learning con-
trol.
● When the engine coolant tempera-
● The engine coolant temperature (deter- ture sensor is open or short-cir-
COOLAN TEMP/S mined by the signal voltage of the cuited, ECM enters fail-safe mode.
× ×
[°C] or [°F] engine coolant temperature sensor) is The engine coolant temperature
displayed. determined by the ECM is dis-
played.
A/F SEN1 (B1) [V] × × ● The A/F signal computed from the input
A/F SEN1 (B2) [V] × signal of the A/F sensor 1 is displayed.

HO2S2 (B1) [V] × ● The signal voltage of the heated oxygen

HO2S2 (B2) [V] × sensor 2 is displayed.

EC-89
 TROUBLE DIAGNOSIS

CAN
ECM
MAIN DIAG
Monitored item INPUT
SIG- SUP- Description Remarks
[Unit] SIG-
NALS PORT
NALS
MNTR
HO2S2 MNTR (B1) ● Display of heated oxygen sensor 2 sig-
×
[RICH/LEAN] nal:
RICH: means the amount of oxygen
after three way catalyst is relatively ● When the engine is stopped, a
HO2S2 MNTR (B2) small. certain value is indicated.
× LEAN: means the amount of oxygen
[RICH/LEAN]
after three way catalyst is relatively
large.
● The vehicle speed computed from the
VHCL SPEED SE
× × vehicle speed signal sent from combina-
[km/h] or [mph]
tion meter is displayed.
BATTERY VOLT ● The power supply voltage of ECM is dis-
× ×
[V] played.
ACCEL SEN 1 [V] × × ● The accelerator pedal position sensor
ACCEL SEN 2 [V] × signal voltage is displayed.

THRTL SEN 1 [V] × × ● The throttle position sensor signal volt-

THRTL SEN 2 [V] × age is displayed.

● The intake air temperature (determined

INT/A TEMP SE
× × by the signal voltage of the intake air
[°C] or [°F]
temperature sensor) is indicated.
● Indicates start signal status [ON/OFF]
● After starting the engine, [OFF] is
START SIGNAL computed by the ECM according to the
× × displayed regardless of the starter
[ON/OFF] signals of engine speed and battery volt-
signal.
age.
● Indicates idle position [ON/OFF] com-
CLSD THL POS
× × puted by ECM according to the acceler-
[ON/OFF]
ator pedal position sensor signal.
● Indicates [ON/OFF] condition of the air
AIR COND SIG
× × conditioner switch as determined by the
[ON/OFF]
air conditioner signal.
● Indicates [ON/OFF] condition from the
P/N POSI SW
× × park/neutral position (PNP) switch sig-
[ON/OFF]
nal.
● [ON/OFF] condition of the power steer-
PW/ST SIGNAL ing system (determined by the signal
× ×
[ON/OFF] voltage of the power steering pressure
sensor signal) is indicated.
● Indicates [ON/OFF] condition from the
electrical load signal.
LOAD SIGNAL ON: Rear window defogger switch is ON
× ×
[ON/OFF] and/or lighting switch is in 2nd position.
OFF: Both rear window defogger switch
and lighting switch are OFF.
IGNITION SW ● Indicates [ON/OFF] condition from igni-
×
[ON/OFF] tion switch signal.
HEATER FAN SW ● Indicates [ON/OFF] condition from the
×
[ON/OFF] heater fan switch signal.
BRAKE SW ● Indicates [ON/OFF] condition from the
×
[ON/OFF] stop lamp switch signal.

EC-90
 TROUBLE DIAGNOSIS

CAN
ECM
MAIN DIAG A
Monitored item INPUT
SIG- SUP- Description Remarks
[Unit] SIG-
NALS PORT
NALS
MNTR
EC
INJ PULSE-B1
× ● Indicates the actual fuel injection pulse ● When the engine is stopped, a
[msec]
width compensated by ECM according certain computed value is indi-
INJ PULSE-B2 to the input signals. cated.
[msec]
C

IGN TIMING ● Indicates the ignition timing computed ● When the engine is stopped, a
×
[BTDC] by ECM according to the input signals. certain value is indicated.
D
● “Calculated load value” indicates the
CAL/LD VALUE [%] value of the current air flow divided by
peak air flow.
● Indicates the mass air flow computed by
E
MASS AIRFLOW
ECM according to the signal voltage of
[g·m/s]
the mass air flow sensor.
● Indicates the EVAP canister purge vol- F
ume control solenoid valve control value
PURG VOL C/V computed by the ECM according to the
[%] input signals.
G
● The opening becomes larger as the
value increases.
INT/V TIM (B1) H
[°CA] ● Indicates [°CA] of intake camshaft
INT/V TIM (B2) advanced angle.
[°CA]
I
INT/V SOL (B1) [%] ● The control value of the intake valve tim-
ing control solenoid valve (determined
by ECM according to the input signals)
is indicated. J
INT/V SOL (B2) [%]
● The advance angle becomes larger as
the value increases.
● The air conditioner relay control condi- K
AIR COND RLY
× tion (determined by ECM according to
[ON/OFF]
the input signals) is indicated.
● Indicates the fuel pump relay control L
FUEL PUMP RLY
× condition determined by ECM according
[ON/OFF]
to the input signals.
● Indicates the throttle control motor relay M
THRTL RELAY
control condition determined by the
[ON/OFF]
ECM according to the input signals.
● The control condition of the cooling fan
(determined by ECM according to the
COOLING FAN input signals) is indicated.
[HI/LOW/OFF] HI: High speed operation
LOW: Low speed operation
OFF: Stop
HO2S2 HTR (B1)
[ON/OFF] ● Indicates [ON/OFF] condition of heated
oxygen sensor 2 heater determined by
HO2S2 HTR (B2) ECM according to the input signals.
[ON/OFF]
● The vehicle speed computed from the
VEHICLE SPEED
vehicle speed signal sent from combina-
[km/h] or [MPH]
tion meter is displayed.

EC-91
 TROUBLE DIAGNOSIS

CAN
ECM
MAIN DIAG
Monitored item INPUT
SIG- SUP- Description Remarks
[Unit] SIG-
NALS PORT
NALS
MNTR
● Display the condition of idle air volume
learning
IDL A/V LEARN YET: Idle air volume learning has not
[YET/CMPLT] been performed yet.
CMPLT: Idle air volume learning has
already been performed successfully.
TRVL AFTER MIL
● Distance traveled while MI is activated.
[km] or [mile]
A/F S1 HTR (B1) ● Indicates A/F sensor 1 heater control
[%] value computed by ECM according to
the input signals.
A/F S1 HTR (B2)
● The current flow to the heater becomes
[%]
larger as the value increases.
AC PRESS SEN ● The signal voltage from the refrigerant
[V] pressure sensor is displayed.
● The vehicle speed computed from the
VHCL SPEED SE
vehicle speed signal sent from combina-
[km/h] or [mph]
tion meter is displayed.
SET VHCL SPD
● The preset vehicle speed is displayed.
[km/h] or [mph]
MAIN SW ● Indicates [ON/OFF] condition from
[ON/OFF] CRUISE switch signal.
CANCEL SW ● Indicates [ON/OFF] condition from CAN-
[ON/OFF] CEL switch signal.
RESUME/ACC SW ● Indicates [ON/OFF] condition from
[ON/OFF] ACCEL/RES switch signal.
SET SW ● Indicates [ON/OFF] condition from
[ON/OFF] COAST/SET switch signal.
● Indicates [ON/OFF] condition from
BRAKE SW1
ASCD brake switch signal, and ASCD
[ON/OFF]
clutch switch signal (M/T models).
BRAKE SW2 ● Indicates [ON/OFF] condition of stop
[ON/OFF] lamp switch signal.
● Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the
VHCL SPD CUT ASCD set speed.
[NON/CUT] CUT: Vehicle speed increased to exces-
sively high compared with the ASCD set
speed, and ASCD operation is cut off.
● Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the
ASCD set speed.
LO SPEED CUT
CUT: Vehicle speed decreased to
[NON/CUT]
excessively low compared with the
ASCD set speed, and ASCD operation
is cut off.
● Indicates [ON/OFF] condition of A/T O/D
AT OD MONITOR ● For M/T models always “OFF” is
according to the input signal from the
[ON/OFF] displayed.
TCM.
AT OD CANCEL ● Indicates [ON/OFF] condition of A/T O/D ● For M/T models always “OFF” is
[ON/OFF] cancel signal sent from the TCM. displayed.

EC-92
 TROUBLE DIAGNOSIS

CAN
ECM
MAIN DIAG A
Monitored item INPUT
SIG- SUP- Description Remarks
[Unit] SIG-
NALS PORT
NALS
MNTR
EC
● Indicates [ON/OFF] condition of
CRUISE LAMP
CRUISE lamp determined by the ECM
[ON/OFF]
according to the input signals.
C
● Indicates [ON/OFF] condition of SET
SET LAMP
lamp determined by the ECM according
[ON/OFF]
to the input signals.
Voltage [V] D
Frequency [msec], ● Only “#” is displayed if item is
[Hz] or [%] unable to be measured.
● Voltage, frequency, duty cycle or pulse ● Figures with “#”s are temporary E
DUTY-HI
width measured by the probe. ones. They are the same figures
DUTY-LOW
as an actual piece of data which
PLS WIDTH-HI was just previously measured. F
PLS WIDTH-LOW
CAN COMM
×
[OK/NG] G
CAN CIRC 1
×
[OK/UNKWN]
CAN CIRC 2 H
×
[OK/UNKWN]
CAN CIRC 3
×
[OK/UNKWN] I
CAN CIRC 4
× ● These items are not displayed in
[OK/UNKWN] ● Indicates the communication condition
“SELECTION FROM MENU”
CAN CIRC 5 of CAN communication line. J
× mode.
[OK/UNKWN]
CAN CIRC 6
×
[OK/UNKWN]
K
CAN CIRC 7
×
[OK/UNKWN]
CAN CIRC 8 L
×
[OK/UNKWN]
CAN CIRC 9
×
[OK/UNKWN]
M
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

DATA MONITOR (SPEC) MODE

Monitored Item
ECM
MAIN
Monitored item [Unit] INPUT Description Remarks
SIGNALS
SIGNALS
● Indicates the engine speed computed
from the signal of the crankshaft position
ENG SPEED [rpm] × ×
sensor (POS) and camshaft position
sensor (PHASE).
● The signal voltage of the mass air flow ● When engine is running specification
MAS A/F SE-B1 [V] × ×
sensor specification is displayed. range is indicated.

EC-93
 TROUBLE DIAGNOSIS

ECM
MAIN
Monitored item [Unit] INPUT Description Remarks
SIGNALS
SIGNALS
● “Base fuel schedule” indicates the fuel
B/FUEL SCHDL injection pulse width programmed into ● When engine is running specification
×
[msec] ECM, prior to any learned on board cor- range is indicated.
rection.
● When engine is running specification
● The mean value of the air-fuel ratio feed- range is indicated.
A/F ALPHA-B1 [%]
× back correction factor per cycle is indi-
A/F ALPHA-B2 [%] ● This data also includes the data for the
cated.
air-fuel ratio learning control.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

ACTIVE TEST MODE

Test Item
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
● Engine: Return to the original ● Harness and connectors
FUEL INJEC- trouble condition If trouble symptom disappears, see
● Fuel injectors
TION ● Change the amount of fuel injec- CHECK ITEM.
tion using CONSULT-II. ● A/F sensor 1

● Engine: Return to the original

trouble condition
IGNITION TIM- If trouble symptom disappears, see
● Timing light: Set ● Perform Idle Air Volume Learning.
ING CHECK ITEM.
● Retard the ignition timing using
CONSULT-II.

● Engine: After warming up, idle ● Harness and connectors

the engine. ● Compression
POWER BAL- ● A/C switch OFF ● Fuel injectors
Engine runs rough or dies.
ANCE ● Shift lever N ● Power transistor
● Cut off each injector signal one at ● Spark plugs
a time using CONSULT-II. ● Ignition coils

● Ignition switch: ON ● Harness and connectors

COOLING FAN* ● Turn the cooling fan “HI", “LOW” Cooling fan moves and stops. ● Cooling fan motor
and “OFF” using CONSULT-II. ● IPDM E/R

● Engine: Return to the original ● Harness and connectors

ENG COOLANT trouble condition If trouble symptom disappears, see ● Engine coolant temperature sen-
TEMP ● Change the engine coolant tem- CHECK ITEM. sor
perature using CONSULT-II. ● Fuel injectors
● Ignition switch: ON (Engine
stopped)
FUEL PUMP Fuel pump relay makes the operat- ● Harness and connectors
RELAY ● Turn the fuel pump relay “ON” ing sound. ● Fuel pump relay
and “OFF” using CONSULT-II
and listen to operating sound.
● Engine: After warming up, run
engine at 1,500 rpm.
PURG VOL ● Change the EVAP canister purge Engine speed changes according to ● Harness and connectors
CONT/V volume control solenoid valve the opening percent. ● Solenoid valve
opening percent using CON-
SULT-II.
● Engine: Return to the original
● Harness and connectors
V/T ASSIGN trouble condition If trouble symptom disappears, see
ANGLE CHECK ITEM. ● Intake valve timing control sole-
● Change intake valve timing using
noid valve
CONSULT-II.

EC-94
 TROUBLE DIAGNOSIS

*: Leaving cooling fan “OFF” with CONSULT-II while engine is running may cause the engine to overheat.
A
DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-37, "SYSTEM READINESS TEST (SRT) CODE" . EC
SRT Work Support Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
C
DTC Work Support Mode
Test mode Test item Condition Reference page
A/F SEN1 (B1) P1276 EC-371 D
A/F SEN1 (B1) P1278/P1279 EC-379, EC-391
A/F SEN1
A/F SEN1 (B2) P1286 EC-371
E
A/F SEN1 (B2) P1288/P1289 EC-379, EC-391
HO2S2 (B1) P0139 Refer to corresponding EC-169
trouble diagnosis for
HO2S2 (B1) P1146 DTC. EC-292
F
HO2S2 (B1) P1147 EC-303
H02S2
HO2S2 (B2) P0159 EC-169
HO2S2 (B2) P1166 EC-292 G
HO2S2 (B2) P1167 EC-303

REAL TIME DIAGNOSIS IN DATA MONITOR MODE (RECORDING VEHICLE DATA) H

Description
CONSULT-II has two kinds of triggers and they can be selected by touching “SETTING” in “DATA MONITOR”
mode. I
1. “AUTO TRIG” (Automatic trigger):
● The malfunction will be identified on the CONSULT-II screen
in real time. J
In other words, DTC/1st trip DTC and malfunction item will be
displayed if the malfunction is detected by ECM.
At the moment a malfunction is detected by ECM, “MONI- K
TOR” in “DATA MONITOR” screen is changed to “Recording
Data ... xx%” as shown at right, and the data after the mal-
function detection is recorded. Then when the percentage
reached 100%, “REAL-TIME DIAG” screen is displayed. If L
“STOP” is touched on the screen during “Recording Data ... PBIB1593E
xx%”, “REAL-TIME DIAG” screen is also displayed.
The recording time after the malfunction detection and the M
recording speed can be changed by “TRIGGER POINT” and
“Recording Speed”. Refer to CONSULT-II OPERATION MAN-
UAL.
2. “MANU TRIG” (Manual trigger):
● DTC/1st trip DTC and malfunction item will not be displayed
automatically on CONSULT-II screen even though a malfunc-
tion is detected by ECM.
DATA MONITOR can be performed continuously even though
a malfunction is detected.
SEF707X

EC-95
 TROUBLE DIAGNOSIS

Operation
1. “AUTO TRIG”
● While trying to detect the DTC/1st trip DTC by performing the DTC Confirmation Procedure, be sure to
select to “DATA MONITOR (AUTO TRIG)” mode. You can confirm the malfunction at the moment it is
detected.
● While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, compo-
nents and harness in the DTC Confirmation Procedure, the moment a malfunction is found the DTC/1st
trip DTC will be displayed. (Refer to INCIDENT SIMULATION TESTS in GI-24, "How to Perform Effi-
cient Diagnosis for an Electrical Incident" .)
2. “MANU TRIG”
● If the malfunction is displayed as soon as “DATA MONITOR” is selected, reset CONSULT-II to “MANU
TRIG”. By selecting “MANU TRIG” you can monitor and store the data. The data can be utilized for fur-
ther diagnosis, such as a comparison with the value for the normal operating condition.

PBIB0197E

Generic Scan Tool (GST) Function EBS010FK

DESCRIPTION
Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained below.
ISO9141 is used as the protocol.
The name “GST” or “Generic Scan Tool” is used in this service man-
ual.

SEF139P

EC-96
 TROUBLE DIAGNOSIS

FUNCTION
Diagnostic test mode Function
A

This mode gains access to current emission-related data values, including analog inputs
MODE 1 READINESS TESTS
and outputs, digital inputs and outputs, and system status information.
EC
This mode gains access to emission-related data value which were stored by ECM during
MODE 2 (FREEZE DATA) the freeze frame. For details, refer to EC-88, "Freeze Frame Data and 1st Trip Freeze
Frame Data" .
This mode gains access to emission-related power train trouble codes which were stored C
MODE 3 DTCs
by ECM.
This mode can clear all emission-related diagnostic information. This includes:
● Clear number of diagnostic trouble codes (MODE 1) D
● Clear diagnostic trouble codes (MODE 3)
MODE 4 CLEAR DIAG INFO ● Clear trouble code for freeze frame data (MODE 1)
E
● Clear freeze frame data (MODE 2)
● Reset status of system monitoring test (MODE 1)
● Clear on board monitoring test results (MODE 6 and 7)
F
This mode accesses the results of on board diagnostic monitoring tests of specific com-
MODE 6 (ON BOARD TESTS)
ponents/systems that are not continuously monitored.
This mode enables the off board test drive to obtain test results for emission-related pow-
G
MODE 7 (ON BOARD TESTS) ertrain components/systems that are continuously monitored during normal driving condi-
tions.
MODE 8 — This mode is not applicable on this vehicle.
H
This mode enables the off-board test device to request specific vehicle information such
MODE 9 (CALIBRATION ID)
as Vehicle Identification Number (VIN) and Calibration IDs.

INSPECTION PROCEDURE I
1. Turn ignition switch OFF.
2. Connect “GST” to data link connector, which is located under
driver side dash panel near the hood opener handle. J

PBIB1069E

M
3. Turn ignition switch ON.
4. Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.)

SEF398S

EC-97
 TROUBLE DIAGNOSIS

5. Perform each diagnostic mode according to each service proce-

dure.
For further information, see the GST Operation Manual of
the tool maker.

SEF416S

EC-98
 TROUBLE DIAGNOSIS

CONSULT-II Reference Value in Data Monitor EBS010FL

Remarks: A
● Specification data are reference values.
● Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in EC
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
MONITOR ITEM CONDITION SPECIFICATION
● Run engine and compare CONSULT-II value with the tachometer indica- Almost the same speed as the C
ENG SPEED
tion. tachometer indication
● Engine: After warming up Idle Approx. 1.1 - 1.5V
● Air conditioner switch: OFF D
MAS A/F SE-B1
● Shift lever: Neutral 2,500 rpm Approx. 1.6 - 2.4V
● No-load
E
● Engine: After warming up Idle 2.5 - 3.5 msec
● Shift lever: Neutral
B/FUEL SCHDL
● Air conditioner switch: OFF 2,000 rpm 2.5 - 3.5 msec
F
● No-load
A/F ALPHA-B1 Maintaining engine speed at 2,000
● Engine: After warming up 54% - 155%
A/F ALPHA-B2 rpm
G
COOLAN TEMP/S ● Engine: After warming up More than 70°C (158°F)
A/F SEN1 (B1) Maintaining engine speed at 2,000
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) rpm H
● Warm-up condition
● After keeping engine speed
HO2S2 (B1) Revving engine from idle to 3,000 rpm 0 - 0.3V ←→ Approx. 0.6 -
HO2S2 (B2) between 3,500 and 4,000 rpm for quickly. 1.0V I
1 minute and at idle for 1 minute
under no load.
● Warm-up condition
J
● After keeping engine speed
HO2S2 MNTR (B1) Revving engine from idle to 3,000 rpm
between 3,500 and 4,000 rpm for LEAN ←→ RICH
HO2S2 MNTR (B2) quickly.
1 minute and at idle for 1 minute
under no load. K
● Turn drive wheels and compare CONSULT-II value with the speedometer Almost the same speed as the
VHCL SPEED SE
indication. speedometer indication
L
BATTERY VOLT ● Ignition switch: ON (Engine stopped) 11 - 14V

● Ignition switch: ON Accelerator pedal: Fully released 0.5 - 1.0V

ACCEL SEN1
(Engine stopped) Accelerator pedal: Fully depressed 4.0 - 4.8V M
● Ignition switch: ON Accelerator pedal: Fully released 0.3 - 1.2V
ACCEL SEN2*
(Engine stopped) Accelerator pedal: Fully depressed 3.9 - 4.8V
● Ignition switch: ON Accelerator pedal: Fully released More than 0.36V
THRTL SEN1 (Engine stopped)
THRTL SEN2* Accelerator pedal: Fully depressed Less than 4.75V
● Shift lever: 1st
START SIGNAL ● Ignition switch: ON → START → ON OFF → ON → OFF

● Ignition switch: ON Accelerator pedal: Fully released ON

CLSD THL POS
(Engine stopped) Accelerator pedal: Slightly depressed OFF
Air conditioner switch: OFF OFF
● Engine: After warming up, idle
AIR COND SIG Air conditioner switch: ON
the engine ON
(Compressor operates.)
Shift lever: Neutral ON
P/N POSI SW ● Ignition switch: ON
Shift lever: Except above OFF

EC-99
 TROUBLE DIAGNOSIS

MONITOR ITEM CONDITION SPECIFICATION

Steering wheel is in neutral position.
● Engine: After warming up, idle OFF
PW/ST SIGNAL (Forward direction)
the engine
Steering wheel is turned. ON
Rear window defogger switch is ON
ON
and/or lighting switch is in 2nd.
LOAD SIGNAL ● Ignition switch: ON
Rear window defogger switch is OFF
OFF
and lighting switch is OFF.
IGNITION SW ● Ignition switch: ON → OFF → ON ON → OFF → ON

● Engine: After warming up, idle Heater fan is operating. ON

HEATER FAN SW
the engine Heater fan is not operating OFF
Brake pedal: Fully released OFF
BRAKE SW ● Ignition switch: ON
Brake pedal: Slightly depressed ON
● Engine: After warming up Idle 2.0 - 3.0 msec
INJ PULSE-B1 ● Shift lever: Neutral
INJ PULSE-B2 ● Air conditioner switch: OFF 2,000 rpm 1.9 - 2.9 msec
● No-load
● Engine: After warming up Idle 13° - 18° BTDC
● Shift lever: Neutral
IGN TIMING
● Air conditioner switch: OFF 2,000 rpm 25° - 45° BTDC
● No-load
● Engine: After warming up Idle 5% - 35%
● Shift lever: Neutral
CAL/LD VALUE
● Air conditioner switch: OFF 2,500 rpm 5% - 35%
● No-load
● Engine: After warming up Idle 2.0 - 6.0 g·m/s
● Shift lever: Neutral
MASS AIRFLOW
● Air conditioner switch: OFF 2,500 rpm 7.0 - 20.0 g·m/s
● No-load
● Engine: After warming up Idle 0%
● Shift lever: Neutral
PURG VOL C/V
● Air conditioner switch: OFF 2,000 rpm —
● No-load
● Engine: After warming up Idle −5° - 5°CA
INT/V TIM (B1) ● Shift lever: Neutral
INT/V TIM (B2) When revving engine up to 2,000 rpm
● Air conditioner switch: OFF Approx. 0° - 30°CA
quickly
● No-load
● Engine: After warming up Idle 0% - 2%
INT/V SOL (B1) ● Shift lever: Neutral
INT/V SOL (B2) When revving engine up to 2,000 rpm
● Air conditioner switch: OFF Approx. 0% - 50%
quickly
● No-load
Air conditioner switch: OFF OFF
● Engine: After warming up, idle
AIR COND RLY Air conditioner switch: ON
the engine ON
(Compressor operates)
● For 1 second after turning ignition switch ON
ON
FUEL PUMP RLY ● Engine running or cranking
● Except above conditions OFF
THRTL RELAY ● Ignition switch: ON ON

EC-100
 TROUBLE DIAGNOSIS

MONITOR ITEM CONDITION SPECIFICATION

A
Engine coolant temperature is 94°C
OFF
(201°F) or less
● Engine: After warming up, idle Engine coolant temperature is
COOLING FAN the engine between 95°C (203°F) and 99°C LOW EC
● Air conditioner switch: OFF (210°F)
Engine coolant temperature is 100°C
HI
(212°F) or more C
● Engine speed is below 3,600 rpm after the following conditions are met.
– Engine: After warming up
HO2S2 HTR (B1) ON
– Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and D
HO2S2 HTR (B2)
at idle for 1 minute under no load
● Engine speed: Above 3,600 rpm OFF
E
● Turn drive wheels and compare CONSULT-II value with the speedometer Almost the same speed as the
VEHICLE SPEED
indication. speedometer indication
Vehicle has traveled after MI has 0 - 65,535 km
TRVL AFTER MIL ● Ignition switch: ON F
turned ON. (0 - 40,723 mile)
A/F S1 HTR (B1)
● Engine: After warming up, idle the engine 0 - 100%
A/F S1 HTR (B2)
● Ignition switch: ON (Engine stopped) Approx. 0V G
AC PRESS SEN ● Engine: Idle
1.0 - 4.0V
● Air conditioner switch: OFF
H
● Turn drive wheels and compare CONSULT-II value with the speedometer Almost the same speed as the
VHCL SPEED SE
indication. speedometer indication
The preset vehicle speed is I
SET VHCL SPD ● Engine: Running ASCD: Operating
displayed.
CRUISE switch: Pressed ON
MAIN SW ● Ignition switch: ON
CRUISE switch: Released OFF J
CANCEL switch: Pressed ON
CANCEL SW ● Ignition switch: ON
CANCEL switch: Released OFF
ACCEL/RES switch: Pressed ON
K
RESUME/ACC SW ● Ignition switch: ON
ACCEL/RES switch: Released OFF
COAST/SET switch: Pressed ON L
SET SW ● Ignition switch: ON
COAST/SET switch: Released OFF
Clutch pedal and brake pedal: Fully
ON
released M
BRAKE SW1 ● Ignition switch: ON
Clutch pedal and/or brake pedal:
OFF
Slightly depressed
Brake pedal: Fully released OFF
BRAKE SW2 ● Ignition switch: ON
Brake pedal: Slightly depressed ON
CRUISE switch: Pressed at the 1st
CRUISE LAMP ● Ignition switch: ON ON → OFF
time → at the 2nd time
● CRUISE switch: ON COAST/SET switch: Pressed ON

SET LAMP ● When vehicle speed is between

40 km/h (25 MPH) and 210 km/h COAST/SET switch: Released OFF
(130 MPH)

EC-101
 TROUBLE DIAGNOSIS

MONITOR ITEM CONDITION SPECIFICATION

CAN COMM OK
CAN CIRC 1 OK
CAN CIRC 2 UNKWN
CAN CIRC 3 OK
CAN CIRC 4 OK
● Ignition switch: ON
CAN CIRC 5 UNKWN
CAN CIRC 6 OK
CAN CIRC 7 OK
CAN CIRC 8 UNKWN
CAN CIRC 9 UNKWN
*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from
ECM terminals voltage signal.

EC-102
 TROUBLE DIAGNOSIS

Major Sensor Reference Graph in Data Monitor Mode EBS010FM

A
The following are the major sensor reference graphs in “DATA MONITOR” mode.
CLSD THL POS, ACCEL SEN 1, THRTL SEN 1
Below is the data for “CLSD THL POS”, “ACCEL SEN 1” and “THRTL SEN 1” when depressing the accelera- EC
tor pedal with the ignition switch ON and with selector lever in 1st position.
The signal of “ACCEL SEN 1” and “THRTL SEN 1” should rise gradually without any intermittent drop or rise
after “CLSD THL POS” is changed from “ON” to “OFF”.
C

F
PBIB0198E

ENG SPEED, MAS A/F SE-B1, THRTL SEN 1, HO2S2 (B1), INJ PULSE-B1
Below is the data for “ENG SPEED”, “MAS A/F SE-B1”, “THRTL SEN 1”, “HO2S2 (B1)” and “INJ PULSE-B1” G
when revving engine quickly up to 4,800 rpm under no load after warming up engine sufficiently.
Each value is for reference, the exact value may vary.
H

SEF241Y

EC-103
TROUBLE DIAGNOSIS

PBIB1594E

EC-104
 TROUBLE DIAGNOSIS - SPECIFICATION VALUE

TROUBLE DIAGNOSIS - SPECIFICATION VALUE PFP:00031

A
Description EBS010FN

The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)”
mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONI- EC
TOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in
“DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or
more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the C
MI.
The SP value will be displayed for the following three items:
● B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board cor- D
rection)
● A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
● MAS A/F SE-B1 (The signal voltage of the mass air flow sensor) E

Testing Condition EBS010FO

● Vehicle driven distance: More than 5,000 km (3,017 miles) F

2
● Barometric pressure: 98.3 - 104.3 kPa (0.983 - 1.043 bar, 1.003 - 1.064 kg/cm , 14.25 - 15.12 psi)
● Atmospheric temperature: 20 - 30°C (68 - 86°F)
G
● Engine coolant temperature: 75 - 95°C (167 - 203°F)
● Transmission: Warmed-up*1
● Electrical load: Not applied*2 H
● Engine speed: Idle
*1: After the engine is warmed up to normal operating temperature, drive vehicle for 5 minutes.
*2: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight I
ahead.
Inspection Procedure EBS010FP
J
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1. Perform EC-26, "BASIC SERVICE PROCEDURE" . K
2. Confirm that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2”
and “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode with L
CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go to EC-106, "Diagnostic Procedure" . M

SEF601Z

EC-105
 TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Diagnostic Procedure EBS010FQ

SEF613ZD

EC-106
TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC

SEF614Z

EC-107
TROUBLE DIAGNOSIS - SPECIFICATION VALUE

SEF615ZA

EC-108
 TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT

TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT PFP:00006

A
Description EBS010FR

Intermittent incidents (I/I) may occur. In many cases, the malfunction resolves itself (the part or circuit function
returns to normal without intervention). It is important to realize that the symptoms described in the customer's EC
complaint often do not recur on (1st trip) DTC visits. Realize also that the most frequent cause of I/I occur-
rences is poor electrical connections. Because of this, the conditions under which the incident occurred may
not be clear. Therefore, circuit checks made as part of the standard diagnostic procedure may not indicate the
specific malfunctioning area. C

Common I/I Report Situations

STEP in Work Flow Situation D
II The CONSULT-II is used. The SELF-DIAG RESULTS screen shows time data other than [0] or [1t].
III The symptom described by the customer does not recur.
E
IV (1st trip) DTC does not appear during the DTC Confirmation Procedure.
VI The Diagnostic Procedure for PXXXX does not indicate the malfunctioning area.

Diagnostic Procedure EBS010FS F

1. INSPECTION START
Erase (1st trip) DTCs. Refer to EC-43, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMA- G
TION" .

>> GO TO 2. H

2. CHECK GROUND TERMINALS

I
Check ground terminals for corroding or loose connection.
Refer to GI-24, "How to Perform Efficient Diagnosis for an Electrical Incident" , “CIRCUIT INSPECTION”,
“Ground Inspection”.
OK or NG J
OK >> GO TO 3.
NG >> Repair or replace.
K
3. SEARCH FOR ELECTRICAL INCIDENT
Perform GI-24, "How to Perform Efficient Diagnosis for an Electrical Incident" , “INCIDENT SIMULATION L
TESTS”.
OK or NG
OK >> INSPECTION END M
NG >> Repair or replace.

EC-109
 POWER SUPPLY CIRCUIT FOR ECM

POWER SUPPLY CIRCUIT FOR ECM PFP:24110

Wiring Diagram (LHD Models) EBS010FT

TBWT0522E

EC-110
 POWER SUPPLY CIRCUIT FOR ECM

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: OFF] 0V C
109 W/B Ignition switch BATTERY VOLTAGE
[Ignition switch: ON]
(11 - 14V)
[Engine is running] D
[Ignition switch: OFF]
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L E
(Self shut-off)
[Ignition switch: OFF]
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
F
119 R/W BATTERY VOLTAGE
Power supply for ECM [Ignition switch: ON]
120 P (11 - 14V)

EC-111
POWER SUPPLY CIRCUIT FOR ECM

TBWT0523E

EC-112
 POWER SUPPLY CIRCUIT FOR ECM

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
1 B ECM ground Engine ground
● Idle speed

115 B/W [Engine is running]

ECM ground Engine ground
116 B/R ● Idle speed D

EC-113
 POWER SUPPLY CIRCUIT FOR ECM

Wiring Diagram (RHD Models) EBS011PM

TBWT0524E

EC-114
 POWER SUPPLY CIRCUIT FOR ECM

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: OFF] 0V C
109 W/B Ignition switch BATTERY VOLTAGE
[Ignition switch: ON]
(11 - 14V)
[Engine is running] D
[Ignition switch: OFF]
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L E
(Self shut-off)
[Ignition switch: OFF]
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
F
119 Y BATTERY VOLTAGE
Power supply for ECM [Ignition switch: ON]
120 P (11 - 14V)

EC-115
POWER SUPPLY CIRCUIT FOR ECM

TBWT0525E

EC-116
 POWER SUPPLY CIRCUIT FOR ECM

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
1 B ECM ground Engine ground
● Idle speed

115 B/W [Engine is running]

ECM ground Engine ground
116 B/R ● Idle speed D

Diagnostic Procedure EBS010FU

1. INSPECTION START E

Start engine.
Is engine running?
F
Yes or No
Yes >> GO TO 7.
No >> GO TO 2.
G
2. CHECK ECM POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF and then ON. H
2. Check voltage between ECM terminal 109 and ground with
CONSULT-II or tester.
Voltage: Battery voltage I

OK or NG
OK >> GO TO 4. J
NG >> GO TO 3.

K
MBIB0015E

3. DETECT MALFUNCTIONING PART L

Check the following.
● Harness connectors M72, F102
M
● Fuse block (J/B) connector M4
● 10A fuse
● Harness for open or short between ECM and fuse

>> Repair harness or connectors.

EC-117
 POWER SUPPLY CIRCUIT FOR ECM

4. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 1, 115, 116 and engine ground.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors F103, F151
● Harness connectors F3, E12
● Harness for open or short between ECM and engine ground

>> Repair open circuit or short to power in harness or connectors.

6. CHECK ECM POWER SUPPLY CIRCUIT-II

1. Reconnect ECM harness connector.
2. Turn ignition switch ON.
3. Check voltage between IPDM E/R terminal 17 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> Go to EC-458, "IGNITION SIGNAL" .
NG >> GO TO 7.

PBIB1915E

7. CHECK ECM POWER SUPPLY CIRCUIT-III

1. Turn ignition switch ON and then OFF.
2. Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.
Voltage: After turning ignition switch OFF, battery
voltage will exist for a few seconds, then
drop approximately 0V.
OK or NG
OK >> GO TO 16.
NG (Battery voltage does not exist.)>>GO TO 8.
NG (Battery voltage exists for more than a few seconds.)>>GO TO
16. PBIB1630E

EC-118
 POWER SUPPLY CIRCUIT FOR ECM

8. CHECK ECM POWER SUPPLY CIRCUIT-V A

1. Turn ignition switch OFF.
2. Check voltage between ECM terminal 111 and ground with
CONSULT-II or tester. EC

Voltage: Battery voltage

OK or NG C
OK >> GO TO 9.
NG >> GO TO 11.
D

PBIB1191E
E
9. CHECK ECM POWER SUPPLY CIRCUIT-VI
1. Disconnect ECM harness connector.
F
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 18.
Refer to Wiring Diagram. G
Continuity should exist.
4. Also check harness for short to ground and short to power.
H
OK or NG
OK >> GO TO 14.
NG >> GO TO 10.
I
10. DETECT MALFUNCTIONING PART
Check the following. J
● Harness or connectors E12, F3
● Harness for open or short between ECM and IPDM E/R
K
>> Repair open circuit or short to ground or short to power in harness or connectors.

11. CHECK ECM POWER SUPPLY CIRCUIT-VII L

1. Disconnect ECM harness connector.

2. Disconnect IPDM E/R harness connector E9. M
3. Check harness continuity between ECM terminal 111 and IPDM E/R terminal 46.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.

EC-119
 POWER SUPPLY CIRCUIT FOR ECM

12. DETECT MALFUNCTIONING PART

Check the following.
● Harness or connectors E108, M15
● Harness or connectors M72, F102
● Harness for open or short between ECM and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

13. CHECK 15A FUSE

1. Disconnect 15A fuse from IPDM E/R.
2. Check 15A fuse.
OK or NG
OK >> GO TO 16.
NG >> Replace 15A fuse.

14. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 1, 115, 116 and engine ground.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 16.
NG >> GO TO 15.

15. DETECT MALFUNCTIONING PART

Check the following.
● Harness or connectors F103, F151
● Harness or connectors F3, E12
● Harness for open or short between ECM and engine ground.

>> Repair open circuit or short to ground or short to power in harness or connectors.

16. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-27, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

EC-120
 DTC U1000, U1001 CAN COMMUNICATION LINE

DTC U1000, U1001 CAN COMMUNICATION LINE PFP:23710

A
Description EBS010FV

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec- EC
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. C

On Board Diagnosis Logic EBS010FW

The MI will not light up for these diagnoses. D

Trouble diagnosis
DTC No. DTC detecting condition Possible cause
name
E
U1000 ● ECM cannot communicate to other control
1000 units. ● Harness or connectors
CAN communication
(CAN communication line is open or
U1001 line ● ECM cannot communicate for more than the shorted) F
1001 specified time.

DTC Confirmation Procedure EBS010FX

1. Turn ignition switch ON and wait at least 3 seconds. G

2. Select “DATA MONITOR” mode with CONSULT-II.
3. If 1st trip DTC is detected, go to EC-123, "Diagnostic Procedure" .
H

EC-121
 DTC U1000, U1001 CAN COMMUNICATION LINE

Wiring Diagram EBS010FY

TBWT0692E

EC-122
 DTC U1000, U1001 CAN COMMUNICATION LINE

Diagnostic Procedure EBS010FZ

1. INSPECTION START A

1. Turn ignition switch ON.

2. Select “CAN DIAG SUPPORT MNTR” in “DATA MONITOR” mode with CONSULT-II. EC
3. Print out the CONSULT-II screen.

C
>> Go to LAN-2, "Precautions When Using CONSULT-II" .

EC-123
 DTC P0011, P0021 IVT CONTROL

DTC P0011, P0021 IVT CONTROL PFP:23796

Description EBS010G0

SYSTEM DESCRIPTION
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed
Camshaft position sensor (PHASE) Intake valve Intake valve timing control
Engine coolant temperature sensor Engine coolant temperature timing control solenoid valve

Wheel sensor* Vehicle speed

*: This signal is sent to ECM through CAN communication line.

PBIB1102E

This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid
valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to
increase engine torque in low/mid speed range and output in high-speed range.
CONSULT-II Reference Value in Data Monitor Mode EBS010G1

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
● Engine: After warming up Idle −5° - 5°CA
INT/V TIM (B1) ● Shift lever: Neutral
INT/V TIM (B2) When revving engine up to 2,000 rpm
● Air conditioner switch: OFF Approx. 0° - 30°CA
quickly
● No-load
● Engine: After warming up Idle 0% - 2%
INT/V SOL (B1) ● Shift lever: Neutral
INT/V SOL (B2) When revving engine up to 2,000 rpm
● Air conditioner switch: OFF Approx. 0% - 50%
quickly
● No-load

EC-124
 DTC P0011, P0021 IVT CONTROL

On Board Diagnosis Logic EBS010G2

A
The MI will not light up for these diagnoses.
Trouble diagnosis
DTC No. Detecting condition Possible cause
name EC
P0011
0011 ● Crankshaft position sensor (POS)
(Bank 1) Intake valve timing There is a gap between angle of target and ● Camshaft position sensor (PHASE) C
P0021 control performance phase-control angle degree. ● Accumulation of debris to the signal pick-up
0021 portion of the camshaft
(Bank 2)
D
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
E
Detected items Engine operating condition in fail-safe mode
Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function.

DTC Confirmation Procedure EBS010G3

F

CAUTION:
Always drive at a safe speed.
G
NOTE:
● If DTC P0011 or P0021 is displayed with DTC P1111 or P1136, first perform trouble diagnosis for
DTC P1111 or P1136. Refer to EC-262 .
H
● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10V and 16V at I
idle.
WITH CONSULT-II
J
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture. K
3. Maintain the following conditions for at least 6 consecutive sec-
onds.
Hold the accelerator pedal as steady as possible. L

VHCL SPEED SE 100 - 120 km/h (63 - 75 MPH)

ENG SPEED 2,000 - 4,000 rpm M
SEF353Z
COOLAN TEMP/S 60 - 120°C (140 - 248°F)
B/FUEL SCHDL More than 7.26 msec
Selector lever 5th position
4. Stop vehicle with engine running and let engine idle for 10 seconds.
5. If 1st trip DTC is detected, go to EC-126, "Diagnostic Procedure" .
If 1st trip DTC is not detected, go to next step.
6. Maintain the following conditions for at least 20 consecutive seconds.
ENG SPEED 1,700 - 3,175 rpm (A constant rotation is maintained.)
COOLANT TEMPS 70 - 105°C (158 - 221°F)
Selector lever 1st or 2nd position
Driving vehicle uphill
Driving location uphill (Increased engine load will help maintain the driving
conditions required for this test.)
7. If the 1st trip DTC is detected, go to EC-126, "Diagnostic Procedure" .
EC-125
 DTC P0011, P0021 IVT CONTROL

WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic Procedure EBS010G4

1. CHECK CRANKSHAFT POSITION SENSOR (POS)

Refer to EC-220, "Component Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Replace crankshaft position sensor (POS).

2. CHECK CAMSHAFT POSITION SENSOR (PHASE)

Refer to EC-228, "Component Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Replace camshaft position sensor (PHASE).

3. CHECK CAMSHAFT (INTAKE)

Check the following.
● Accumulation of debris to the signal plate of camshaft rear end
● Chipping signal plate of camshaft rear end
OK or NG
OK >> GO TO 4.
NG >> Remove debris and clean the signal plate of camshaft
rear end or replace camshaft.

SEC905C

4. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For wiring diagram, refer to EC-216 for CKP sensor (POS), EC-222 and EC-224 for CMP sensor (PHASE).

>> INSPECTION END

EC-126
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER PFP:226A0

A
Description EBS010G5

SYSTEM DESCRIPTION
Sensor Input signal to ECM ECM function Actuator EC
Camshaft position sensor (PHASE)
Engine speed
Crankshaft position sensor (POS)
Heated oxygen sensor 2 C
Engine coolant tempera- Heated oxygen sensor 2 heater
Engine coolant temperature sensor heater control
ture
Mass air flow sensor Amount of intake air
D
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION E
Engine speed rpm Heated oxygen sensor 2 heater
Above 3,600 OFF
F
Below 3,600 rpm after the following conditions are met.
● Engine: After warming up
ON
● Keeping the engine speed between 3,500 and 4,000 rpm for 1
G
minute and at idle for 1 minute under no load

CONSULT-II Reference Value in Data Monitor Mode EBS010G6

H
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
● Engine speed is below 3,600 rpm after the following conditions are met. I
– Engine: After warming up
HO2S2 HTR (B1) ON
– Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and
HO2S2 HTR (B2)
at idle for 1 minute under no load J
● Engine speed: Above 3,600 rpm OFF

On Board Diagnosis Logic EBS010G7

K
Trouble diagnosis
DTC No. DTC detecting condition Possible cause
name
P0037 L
0037 The current amperage in the heated oxygen sen- ● Harness or connectors
(Bank 1) Heated oxygen (The heated oxygen sensor 2 heater circuit is
sor 2 heater circuit is out of the normal range.
sensor 2 heater open or shorted.)
P0057 (An excessively low voltage signal is sent to ECM
control circuit low M
0057 through the heated oxygen sensor 2 heater.) ● Heater oxygen sensor 2 heater
(Bank 2)
P0038
0038 The current amperage in the heated oxygen sen- ● Harness or connectors
(Bank 1) Heated oxygen sor 2 heater circuit is out of the normal range. (The heated oxygen sensor 2 heater circuit is
sensor 2 heater (An excessively high voltage signal is sent to shorted.)
P0058 control circuit high ECM through the heated oxygen sensor 2
0058 heater.) ● Heater oxygen sensor 2 heater
(Bank 2)

EC-127
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

DTC Confirmation Procedure EBS010G8

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at
idle.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start the engine and keep the engine speed between 3,500 rpm
and 4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. If 1st trip DTC is detected, go to EC-132, "Diagnostic Procedure"
.

SEF176Y

WITH GST
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start the engine and keep the engine speed between 3,500 rpm and 4,000 rpm for at least 1 minute under
no load.
4. Let engine idle for 1 minute.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start the engine and keep the engine speed between 3,500 rpm and 4,000 rpm for at least 1 minute under
no load.
7. Let engine idle for 1 minute.
8. Select “MODE 3” with GST.
9. If DTC is detected, go to EC-132, "Diagnostic Procedure" .
● When using GST, DTC Confirmation Procedure should be performed twice as much as when using
CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis. There-
fore, using CONSULT-II is recommended.

EC-128
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

Wiring Diagram EBS010G9

BANK 1 A

EC

TBWT0526E

EC-129
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
● Engine speed is below 3,600 rpm after the
following conditions are met.
– Engine: after warming up 0 - 1.0V
– Keeping the engine speed between 3,500
Heated oxygen sensor 2 and 4,000 rpm for 1 minute and at idle for 1
25 P/B
heater (bank 1) minute under no load.
[Ignition switch: ON]
● Engine stopped BATTERY VOLTAGE
[Engine is running] (11 - 14V)
● Engine speed is above 3,600 rpm.

EC-130
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

BANK 2
A

EC

TBWT0527E

EC-131
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
● Engine speed is below 3,600 rpm after the
following conditions are met.
– Engine: after warming up 0 - 1.0V
– Keeping the engine speed between 3,500
Heated oxygen sensor 2 and 4,000 rpm for 1 minute and at idle for 1
6 P/L
heater (bank 2) minute under no load.
[Ignition switch: ON]
● Engine stopped BATTERY VOLTAGE
[Engine is running] (11 - 14V)
● Engine speed is above 3,600 rpm.

Diagnostic Procedure EBS010GA

1. CHECK HO2S2 POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 2 harness connector.

PBIB1908E

3. Turn ignition switch ON.

4. Check voltage between HO2S2 terminal 2 and ground with

CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

PBIB0969E

EC-132
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

2. DETECT MALFUNCTIONING PART A

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7 EC
● 15A fuse
● Harness for open or short between heated oxygen sensor 2 and fuse
C

>> Repair harness or connectors.

3. CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT D

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. E
3. Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
F
Terminals
DTC Bank
ECM Sensor
P0037, P0038 25 3 1 G
P0057, P0058 6 3 2

Continuity should exist. H

4. Also check harness for short to ground and short to power.
OK or NG
I
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK HEATED OXYGEN SENSOR 2 HEATER J

Refer to EC-134, "Component Inspection" .

OK or NG K
OK >> GO TO 5.
NG >> Replace malfunctioning heated oxygen sensor 2.
L
5. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
M
>> INSPECTION END

EC-133
 DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

Component Inspection EBS010GB

HEATED OXYGEN SENSOR 2 HEATER

1. Check resistance between HO2S2 terminals as follows.
Terminal No. Resistance
2 and 3 5.0 - 7.0 Ω at 25°C (77°F)
1 and 2, 3, 4 ∞Ω
4 and 1, 2, 3 (Continuity should not exist)

2. If NG, replace heated oxygen sensor 2.

CAUTION:
● Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard sur-
face such as a concrete floor; use a new one.
● Before installing new oxygen sensor, clean exhaust system
threads using Oxygen Sensor Thread Cleaner tool J-43897-
18 or J-43897-12 and approved anti-seize lubricant.

PBIB0970E

Removal and Installation EBS010GC

HEATED OXYGEN SENSOR 2

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-134
 DTC P0102, P0103 MAF SENSOR

DTC P0102, P0103 MAF SENSOR PFP:22680

A
Component Description EBS011I7

The mass air flow sensor is placed in the stream of intake air. It mea-
sures the intake flow rate by measuring a part of the entire intake EC
flow. It consists of a hot film that is supplied with electric current from
the ECM. The temperature of the hot film is controlled by the ECM a
certain amount. The heat generated by the hot film is reduced as the
intake air flows around it. The more air, the greater the heat loss. C
Therefore, the ECM must supply more electric current to maintain
the temperature of the hot film as air flow increases. The ECM
detects the air flow by means of this current change. D

PBIB1604E

E
CONSULT-II Reference Value in Data Monitor Mode EBS011I8

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION F
● Engine: After warming up Idle Approx. 1.1 - 1.5V
● Air conditioner switch: OFF
MAS A/F SE-B1 G
● Shift lever: Neutral 2,500 rpm Approx. 1.6 - 2.4V
● No-load
● Engine: After warming up Idle 5% - 35%
H
● Shift lever: Neutral
CAL/LD VALUE
● Air conditioner switch: OFF 2,500 rpm 5% - 35%
● No-load I
● Engine: After warming up Idle 2.0 - 6.0 g·m/s
● Shift lever: Neutral
MASS AIRFLOW
● Air conditioner switch: OFF 2,500 rpm 7.0 - 20.0 g·m/s J
● No-load

On Board Diagnosis Logic EBS011I9

K
These self-diagnoses have the one trip detection logic.
Trouble diagnosis
DTC No. DTC detecting condition Possible cause
name L
● Harness or connectors
P0102 Mass air flow sensor An excessively low voltage from the sensor is (The sensor circuit is open or shorted.)
0102 circuit low input sent to ECM. ● Intake air leaks M
● Mass air flow sensor
● Harness or connectors
P0103 Mass air flow sensor An excessively high voltage from the sensor is (The sensor circuit is open or shorted.)
0103 circuit high input sent to ECM.
● Mass air flow sensor

FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
Detected items Engine operating condition in fail-safe mode
Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.

EC-135
 DTC P0102, P0103 MAF SENSOR

DTC Confirmation Procedure EBS011IA

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR DTC P0102
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and wait at least 5 seconds.
4. If DTC is detected, go to EC-140, "Diagnostic Procedure" .

SEF058Y

With GST
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR DTC P0103
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-140, "Diagnostic Procedure" .
If DTC is not detected, go to next step.
5. Start engine and wait at least 5 seconds.
6. If DTC is detected, go to EC-140, "Diagnostic Procedure" .

SEF058Y

With GST
Follow the procedure “With CONSULT-II” above.

EC-136
 DTC P0102, P0103 MAF SENSOR

Wiring Diagram (LHD Models) EBS011IB

EC

TBWT0528E

EC-137
 DTC P0102, P0103 MAF SENSOR

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
● Warm-up condition 1.1 - 1.5V
● Idle speed
51 OR Mass air flow sensor
[Engine is running]
● Warm-up condition 1.7 - 2.4V
● Engine speed is 2,500 rpm.
Sensor ground
(Mass air flow sensor / IAT [Engine is running]
sensor / ECT sensor /
67 B/W ● Warm-up condition Approximately 0V
Power steering pressure
sensor / ASCD steering ● Idle speed
switch)
[Engine is running]
[Ignition switch: OFF]
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L
(Self shut-off)
[Ignition switch: OFF]
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
119 R/W BATTERY VOLTAGE
Power supply for ECM [Ignition switch: ON]
120 P (11 - 14V)

EC-138
 DTC P0102, P0103 MAF SENSOR

Wiring Diagram (RHD Models) EBS011PN

EC

TBWT0529E

EC-139
 DTC P0102, P0103 MAF SENSOR

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
● Warm-up condition 1.1 - 1.5V
● Idle speed
51 OR Mass air flow sensor
[Engine is running]
● Warm-up condition 1.7 - 2.4V
● Engine speed is 2,500 rpm.
Sensor ground
(Mass air flow sensor / IAT [Engine is running]
sensor / ECT sensor /
67 B/W ● Warm-up condition Approximately 0V
Power steering pressure
sensor / ASCD steering ● Idle speed
switch)
[Engine is running]
[Ignition switch: OFF]
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L
(Self shut-off)
[Ignition switch: OFF]
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
119 Y BATTERY VOLTAGE
Power supply for ECM [Ignition switch: ON]
120 P (11 - 14V)

Diagnostic Procedure EBS011IC

1. INSPECTION START
Which malfunction (P0102 or P0103) is duplicated?
P0102 or P0103
P0102 >> GO TO 2.
P0103 >> GO TO 3.

2. CHECK INTAKE SYSTEM

Check the following for connection.
● Air duct
● Vacuum hoses
● Intake air passage between air duct to intake manifold
OK or NG
OK >> GO TO 3.
NG >> Reconnect the parts.

EC-140
 DTC P0102, P0103 MAF SENSOR

3. RETIGHTEN GROUND SCREWS A

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.
EC
>> GO TO 4.

PBIB1071E
E
4. CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1. Disconnect mass air flow (MAF) sensor harness connector.
F
2. Turn ignition switch ON.

PBIB1077E
I
3. Check voltage between MAF sensor terminal 2 and ground with
CONSULT-II or tester.
J
Voltage: Battery voltage
OK or NG
OK >> GO TO 6. K
NG >> GO TO 5.

L
PBIB1168E

5. DETECT MALFUNCTIONING PART M

Check the following.

● Harness connectors E12, F3
● Harness for open or short between IPDM E/R and mass air flow sensor
● Harness for open or short between mass air flow sensor and ECM

>> Repair harness or connectors.

EC-141
 DTC P0102, P0103 MAF SENSOR

6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between MAF sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

7. CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between MAF sensor terminal 4 and ECM terminal 51.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK MASS AIR FLOW SENSOR

Refer to EC-143, "Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace mass air flow sensor.

9. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-142
 DTC P0102, P0103 MAF SENSOR

Component Inspection EBS011ID

MASS AIR FLOW SENSOR A

1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 51 (Mass air flow sensor EC
signal) and ground.
Condition Voltage V
C
Ignition switch ON (Engine stopped.) Approx. 0.4
Idle (Engine is warmed-up to normal
1.1 - 1.5
operating temperature.) D
2,500 rpm (Engine is warmed-up to
1.7 - 2.4
normal operating temperature.)
Idle to about 4,000 rpm* 1.1 - 1.5 to Approx. 2.4 E
PBIB1106E
*: Check for linear voltage rise in response to engine being increased to about
4,000 rpm.
4. If the voltage is out of specification, proceed the following. F
● Turn ignition switch OFF.

● Disconnect mass air flow sensor harness connector and reconnect it again.

● Perform steps 2 and 3 again.

G
5. If NG, remove mass air flow sensor from air duct. Check hot film for damage or dust.
6. If NG, clean or replace mass air flow sensor. H
Removal and Installation EBS011IE

MASS AIR FLOW SENSOR

Refer to EM-14, "AIR CLEANER AND AIR DUCT" . I

EC-143
 DTC P0112, P0113 IAT SENSOR

DTC P0112, P0113 IAT SENSOR PFP:22630

Component Description EBS011IF

The intake air temperature sensor is built-into mass air flow sensor.
The sensor detects intake air temperature and transmits a signal to
the ECM.
The temperature sensing unit uses a thermistor which is sensitive to
the change in temperature. Electrical resistance of the thermistor
decreases in response to the temperature rise.

PBIB1604E

<Reference data>
Intake air temperature
Voltage* V Resistance kΩ
°C (°F)
25 (77) 3.32 1.94 - 2.06
80 (176) 1.23 0.295 - 0.349
*: These data are reference values and are measured between ECM terminal 34
(Intake air temperature sensor) and ground.

CAUTION:
Do not use ECM ground terminals when measuring input/output SEF012P
voltage. Doing so may result in damage to the ECM's transistor.
Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis Logic EBS011IG

Trouble diagnosis
DTC No. DTC detecting condition Possible cause
name
Intake air tempera-
P0112 An excessively low voltage from the sensor is
ture sensor circuit
0112 sent to ECM. ● Harness or connectors
low input
(The sensor circuit is open or shorted.)
Intake air tempera-
P0113 An excessively high voltage from the sensor is ● Intake air temperature sensor
ture sensor circuit
0113 sent to ECM.
high input

DTC Confirmation Procedure EBS011IH

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-147, "Diagnostic Procedure"
.

SEF058Y

EC-144
 DTC P0112, P0113 IAT SENSOR

WITH GST
Follow the procedure “With CONSULT-II” above. A

EC

EC-145
 DTC P0112, P0113 IAT SENSOR

Wiring Diagram EBS011II

TBWT0530E

EC-146
 DTC P0112, P0113 IAT SENSOR

Diagnostic Procedure EBS011IJ

1. CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT A

1. Turn ignition switch OFF.

2. Disconnect mass air flow sensor (intake air temperature sensor EC
is built-into) harness connector.
3. Turn ignition switch ON.
C

PBIB1077E
E

4. Check voltage between mass air flow sensor terminal 5 and

ground. F
Voltage: Approximately 5V
OK or NG
G
OK >> GO TO 2.
NG >> Repair harness or connectors.
H

PBIB1169E

I
2. CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
J
2. Disconnect ECM.
3. Check harness continuity between mass air flow sensor terminal 6 and ECM terminal 67.
Refer to Wiring Diagram.
K
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG L
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
M
3. CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to EC-148, "Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace mass air flow sensor (with intake air temperature sensor).

4. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-147
 DTC P0112, P0113 IAT SENSOR

Component Inspection EBS011IK

INTAKE AIR TEMPERATURE SENSOR

1. Check resistance between mass air flow sensor terminals 5 and
6 under the following conditions.
Intake air temperature °C (°F) Resistance kΩ
25 (77) 1.94 - 2.06

2. If NG, replace mass air flow sensor (with intake air temperature
sensor).

PBIB1604E

SEF012P

Removal and Installation EBS011IL

MASS AIR FLOW SENSOR

Refer to EM-14, "AIR CLEANER AND AIR DUCT" .

EC-148
 DTC P0117, P0118 ECT SENSOR

DTC P0117, P0118 ECT SENSOR PFP:22630

A
Component Description EBS011IM

The engine coolant temperature sensor is used to detect the engine

coolant temperature. The sensor modifies a voltage signal from the EC
ECM. The modified signal returns to the ECM as the engine coolant
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases. C

SEF594K

E
<Reference data>
Engine coolant temperature
Voltage* V Resistance kΩ F
°C (°F)
−10 (14) 4.4 7.0 - 11.4
20 (68) 3.5 2.1 - 2.9 G
50 (122) 2.2 0.68 - 1.00
90 (194) 0.9 0.236 - 0.260
*: These data are reference values and are measured between ECM terminal 73 H
(Engine coolant temperature sensor) and ground. SEF012P

CAUTION:
I
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis Logic EBS011IN
J
These self-diagnoses have the one trip detection logic.
Trouble Diagnosis
DTC No. DTC Detecting Condition Possible Cause
Name K
Engine coolant tem-
P0117 An excessively low voltage from the sensor is
perature sensor cir-
0117 sent to ECM. ● Harness or connectors
cuit low input L
(The sensor circuit is open or shorted.)
Engine coolant tem-
P0118 An excessively high voltage from the sensor is ● Engine coolant temperature sensor
perature sensor cir-
0118 sent to ECM.
cuit high input
M

FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
Detected items Engine operating condition in fail-safe mode
Engine coolant temperature will be determined by ECM based on the time after turning ignition switch ON
or START.
CONSULT-II displays the engine coolant temperature decided by ECM.
Engine coolant temperature decided
Condition
(CONSULT-II display)

Engine coolant temper- Just as ignition switch is turned ON or Start 40°C (104°F)
ature sensor circuit More than approx. 4 minutes after ignition ON or
80°C (176°F)
Start
40 - 80°C (104 - 176°F)
Except as shown above
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling fan operates
while engine is running.

EC-149
 DTC P0117, P0118 ECT SENSOR

DTC Confirmation Procedure EBS011IO

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-152, "Diagnostic Procedure" .

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-150
 DTC P0117, P0118 ECT SENSOR

Wiring Diagram EBS011IP

EC

TBWT0531E

EC-151
 DTC P0117, P0118 ECT SENSOR

Diagnostic Procedure EBS011IQ

1. CHECK ECT SENSOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect engine coolant temperature (ECT) sensor harness
connector.
3. Turn ignition switch ON.

PBIB1078E

4. Check voltage between ECT sensor terminal 1 and ground with

CONSULT-II or tester.
Voltage: Approximately 5V
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.

PBIB0080E

2. CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECT sensor terminal 2 and ECM terminal 67.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

3. CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to EC-153, "Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace engine coolant temperature sensor.

4. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-152
 DTC P0117, P0118 ECT SENSOR

Component Inspection EBS011IR

ENGINE COOLANT TEMPERATURE SENSOR A

1. Check resistance between engine coolant temperature sensor
terminals 1 and 2 as shown in the figure.
EC

D
PBIB0081E

<Reference data> E

Engine coolant
Voltage* V Resistance kΩ
temperature °C (°F)
F
−10 (14) 4.4 7.0 - 11.4
20 (68) 3.5 2.1 - 2.9
50 (122) 2.2 0.68 - 1.00 G
90 (194) 0.9 0.236 - 0.260
*: These data are reference values and are measured between ECM terminal
73 (Engine coolant temperature sensor) and ground. H
SEF012P

2. If NG, replace engine coolant temperature sensor.

Removal and Installation EBS011IS I
ENGINE COOLANT TEMPERATURE SENSOR
Refer to CO-25, "WATER INLET AND THERMOSTAT ASSEMBLY" .
J

EC-153
 DTC P0122, P0123 TP SENSOR

DTC P0122, P0123 TP SENSOR PFP:16119

Component Description EBS011IT

Electric throttle control actuator consists of throttle control motor,

throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi-
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
PBIB0145E
tion.
CONSULT-II Reference Value in Data Monitor Mode EBS011IU

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
● Ignition switch: ON Accelerator pedal: Fully released More than 0.36V
THRTL SEN1 (Engine stopped)
THRTL SEN2* Accelerator pedal: Fully depressed Less than 4.75V
● Shift lever: 1st
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.

On Board Diagnosis Logic EBS011IV

These self-diagnoses have the one trip detection logic.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0122 Throttle position sensor An excessively low voltage from the TP sensor ● Harness or connectors
0122 2 circuit low input 2 is sent to ECM. (The TP sensor 2 circuit is open or
shorted.)
P0123 Throttle position sensor An excessively high voltage from the TP sen-
● Electric throttle control actuator
0123 2 circuit high input sor 2 is sent to ECM.
(TP sensor 2)

FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
Engine operation condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

EC-154
 DTC P0122, P0123 TP SENSOR

DTC Confirmation Procedure EBS011IW

A
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION: EC
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON. C
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
D
4. If DTC is detected, go to EC-157, "Diagnostic Procedure" .

SEF058Y

WITH GST G
Follow the procedure “WITH CONSULT-II” above.

EC-155
 DTC P0122, P0123 TP SENSOR

Wiring Diagram EBS011IX

TBWT0532E

EC-156
 DTC P0122, P0123 TP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Sensor power supply C
47 W/R [Ignition switch: ON] Approximately 5V
(Throttle position sensor)
[Ignition switch: ON]
● Engine stopped D
More than 0.36V
● Shift lever: 1st
● Accelerator pedal fully released
50 G Throttle position sensor 1
[Ignition switch: ON] E
● Engine stopped
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully depressed F
[Engine is running]
Sensor ground
66 L ● Warm-up condition Approximately 0V
(Throttle position sensor) G
● Idle speed
[Ignition switch: ON]
● Engine stopped H
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully released
69 Y Throttle position sensor 2
[Ignition switch: ON] I
● Engine stopped
More than 0.36V
● Shift lever: 1st
● Accelerator pedal fully depressed J

Diagnostic Procedure EBS011IY

1. RETIGHTEN GROUND SCREWS K

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. L

>> GO TO 2.
M

PBIB1071E

EC-157
 DTC P0122, P0123 TP SENSOR

2. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT

1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.

PBIB1079E

3. Check voltage between electric throttle control actuator terminal

1 and ground with CONSULT-II or tester.
Voltage: Approximately 5V
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.

PBIB0082E

3. CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between electric throttle control actuator terminal 5 and ECM terminal 66.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 69 and electric throttle control actuator terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK THROTTLE POSITION SENSOR

Refer to EC-159, "Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.

EC-158
 DTC P0122, P0123 TP SENSOR

6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR A

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" . EC

>> INSPECTION END

C
7. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . D

>> INSPECTION END

E
Component Inspection EBS011IZ

THROTTLE POSITION SENSOR

1. Reconnect all harness connectors disconnected.
F
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Turn ignition switch ON.
4. Set selector lever to 1st position. G
5. Check voltage between ECM terminals 50 (TP sensor 1 signal),
69 (TP sensor 2 signal) and engine ground under the following
conditions.
H
Terminal Accelerator pedal Voltage

50 Fully released More than 0.36V

(Throttle position sensor 1) Fully depressed Less than 4.75V
I

69 Fully released Less than 4.75V

(Throttle position sensor 2) Fully depressed More than 0.36V J
6. If NG, replace electric throttle control actuator and go to the next PBIB1658E

step.
7. Perform EC-27, "Throttle Valve Closed Position Learning" . K
8. Perform EC-27, "Idle Air Volume Learning" .
Removal and Installation EBS011J0
L
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" .
M

EC-159
 DTC P0138, P0158 HO2S2

DTC P0138, P0158 HO2S2 PFP:226A0

Component Description EBS011J1

The heated oxygen sensor 2, after three way catalyst 1, monitors the
oxygen level in the exhaust gas on each bank.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.
SEF327R

CONSULT-II Reference Value in Data Monitor Mode EBS011J2

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
HO2S2 (B1) ● Warm-up condition 0 - 0.3V ←→ Approx. 0.6 -
HO2S2 (B2) ● After keeping engine speed 1.0V
Revving engine from idle to 3,000 rpm
between 3,500 and 4,000 rpm for quickly.
HO2S2 MNTR (B1)
1 minute and at idle for 1 minute LEAN ←→ RICH
HO2S2 MNTR (B2)
under no load.

On Board Diagnosis Logic EBS011J3

The heated oxygen sensor 2 has a much longer switching time

between rich and lean than the air fuel ratio (A/F) sensor 1. The oxy-
gen storage capacity before the three way catalyst causes the longer
switching time. To judge the malfunctions of heated oxygen sensor
2, ECM monitors whether the voltage is unusually high during the
various driving condition such as fuel-cut.

PBIB1848E

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0138
0138
● Harness or connectors
(Bank 1) Heated oxygen sensor An excessively high voltage from the sensor is (The sensor circuit is open or shorted)
P0158 2 circuit high voltage sent to ECM.
● Heated oxygen sensor 2
0158
(Bank 2)

EC-160
 DTC P0138, P0158 HO2S2

DTC Confirmation Procedure EBS011J4

A
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at EC
least 10 seconds before conducting the next test.
WITH CONSULT-II C
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
D
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and E
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 2 minutes.
6. If 1st trip DTC is detected, go to EC-165, "Diagnostic Procedure" F
. SEF174Y

WITH GST
1. Start engine and warm it up to the normal operating temperature. G
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 2 minutes. H
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
I
7. Let engine idle for 2 minutes.
8. Select “MODE 3” with GST.
9. If DTC is detected, go to EC-165, "Diagnostic Procedure" . J

EC-161
 DTC P0138, P0158 HO2S2

Wiring Diagram EBS011J5

BANK 1

TBWT0533E

EC-162
 DTC P0138, P0158 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are D
74 OR 0 - Approximately 1.0V
(bank 1) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
E

[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor) F
● Idle speed

EC-163
 DTC P0138, P0158 HO2S2

BANK 2

TBWT0534E

EC-164
 DTC P0138, P0158 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are D
55 L/B 0 - Approximately 1.0V
(bank 2) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
E

[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor) F
● Idle speed

Diagnostic Procedure EBS011J6

1. RETIGHTEN GROUND SCREWS G

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. H

>> GO TO 2.
I

PBIB1071E
K

EC-165
 DTC P0138, P0158 HO2S2

2. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.
2. Disconnect heated oxygen sensor 2 harness connector.

PBIB1908E

3. Check harness continuity between HO2S2 terminal 4 and ECM terminal 78.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

3. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
Terminals
DTC Bank
ECM Sensor
P0138 74 1 1
P0158 55 1 2

Continuity should exist.

2. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Terminals
DTC Bank
ECM Sensor
P0138 74 1 1
P0158 55 1 2

Continuity should not exist.

3. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

EC-166
 DTC P0138, P0158 HO2S2

4. CHECK HO2S2 CONNECTOR FOR WATER A

1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 2 harness connector.
3. Check connectors for water. EC

Water should not exist.

OK or NG C
OK >> GO TO 5.
NG >> Repair or replace harness or connectors.
D
5. CHECK HEATED OXYGEN SENSOR 2
Refer to EC-167, "Component Inspection" .
E
OK or NG
OK >> GO TO 6.
NG >> Replace malfunctioning heated oxygen sensor 2.
F
6. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . G

>> INSPECTION END

H
Component Inspection EBS011J7

HEATED OXYGEN SENSOR 2

With CONSULT-II
I
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture. J
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and
K
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
L
SEF174Y

6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select M

“HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II.

PBIB1672E

EC-167
 DTC P0138, P0158 HO2S2

7. Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ±25%.

PBIB1920E

“HO2S2 (B1)/(B2)” should be above 0.73V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is −25%.
CAUTION:
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Without CONSULT-II
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
engine ground.
6. Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.73V at least once during this
procedure.
If the voltage is above 0.73V at step 6, step 7 is not neces-
sary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in 5th
gear position.
The voltage should be below 0.18V at least once during this PBIB1607E
procedure.
8. If NG, replace heated oxygen sensor 2.
CAUTION:
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation EBS011J8

HEATED OXYGEN SENSOR 2

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-168
 DTC P0139, P0159 HO2S2

DTC P0139, P0159 HO2S2 PFP:226A0

A
Component Description EBS011J9

The heated oxygen sensor 2, after three way catalyst 1, monitors the
oxygen level in the exhaust gas on each bank. EC
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt- C
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for D
engine control operation.
SEF327R

E
CONSULT-II Reference Value in Data Monitor Mode EBS011JA

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION F
HO2S2 (B1) ● Warm-up condition 0 - 0.3V ←→ Approx. 0.6 -
HO2S2 (B2) ● After keeping engine speed 1.0V
Revving engine from idle to 3,000 rpm
between 3,500 and 4,000 rpm for quickly.
G
HO2S2 MNTR (B1)
1 minute and at idle for 1 minute LEAN ←→ RICH
HO2S2 MNTR (B2)
under no load.
H
On Board Diagnosis Logic EBS011JB

The heated oxygen sensor 2 has a much longer switching time

between rich and lean than the air fuel ratio (A/F) sensor 1. The oxy-
I
gen storage capacity before the three way catalyst causes the longer
switching time. To judge the malfunctions of heated oxygen sensor
2, ECM monitors whether the switching response of the sensor's
voltage is faster than specified during the various driving condition J
such as fuel-cut.

SEF302U

L
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0139 ● Harness or connectors
M
0139 (The sensor circuit is open or shorted)
(Bank 1) ● Heated oxygen sensor 2
Heated oxygen sensor It takes more time for the sensor to respond
P0159 2 circuit slow response between rich and lean than the specified time. ● Fuel pressure
0159 ● Injectors
(Bank 2)
● Intake air leaks

EC-169
 DTC P0139, P0159 HO2S2

DTC Confirmation Procedure EBS011PO

CAUTION:
Always drive vehicle at a safe speed.
NOTE:
● “COMPLETED” will appear on CONSULT-II screen when all tests “COND1”, “COND2” and
“COND3” are completed.
● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
TESTING CONDITION:
Never stop engine during this procedure. If the engine is stopped, retry this procedure from step 2 in
Procedure for COND1.
WITH CONSULT-II
Procedure for COND1
For the best results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30°C (32 to 86°F)
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed at between 3,500 to 4,000 rpm for at least 1 minute under no
load.
4. Let engine idle 1 minute.
5. Select “HO2S2 (B1) P0139” or “HO2S2 (B2) P0159” of “HO2S2” in “DTC WORK SUPPORT” mode with
CONSULT-II.
6. Touch “START”.
7. Let engine idle for at least 30 seconds.
8. Rev engine up to 2,000 rpm 2 or 3 times quickly under no load.
If “COMPLETED” appears on CONSULT-II screen, go to step 2 in Procedure for COND3.
If “COMPLETED” does not appear on CONSULT-II screen, go to the following step.
9. When the following conditions are met, “TESTING” will be displayed at “COND1” on the CONSULT-II
screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take
approximately 60 seconds.)
ENG SPEED More than 1,000 rpm
B/FUEL SCHDL More than 1.0 msec
COOLANT TEMP/S 70 - 105 °C
Selector level Suitable position

PBIB0552E

NOTE:
● If “TESTING” is not displayed after 5 minutes, retry from step 2 in Procedure for COND1.

● If “COMPLETED” already appears at “COND2” on CONSULT-II screen before Procedure for

COND2 is conducted, it is unnecessary to conduct step 1 in Procedure for COND2.

EC-170
 DTC P0139, P0159 HO2S2

Procedure for COND2

1. While driving, release accelerator pedal completely from the A
above condition [step 9] until “INCOMPLETE” at “COND2” on
CONSULT-II screen has turned to “COMPLETED”. (It will take
approximately 4 seconds.) EC
NOTE:
If “COMPLETED” already appears at “COND3” on CONSULT-II
screen before Procedure for COND3 is conducted, it is unnec-
C
essary to conduct step 1 in Procedure for COND3.

PBIB0553E
D

Procedure for COND3

1. Stop vehicle and let it idle until “INCOMPLETE” of “COND3” on
E
CONSULT-II screen has turned to “COMPLETED”. (It will take a
maximum of approximately 6 minutes.)
2. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”. F
If “NG” is displayed, refer to EC-175, "Diagnostic Procedure" .
If “CAN NOT BE DIAGNOSED” is displayed, perform the follow-
ing. G
a. Turn ignition switch OFF and leave the vehicle in a cool place
(soak the vehicle).
b. Turn ignition switch ON and select “COOLANTEMP/S” in “DATA SEF668Y
H
MONITOR” mode with CONSULT-II.
c. Start engine and warm it up while monitoring “COOLANTEMP/S” indication on CONSULT-II.
d. When “COOLANTEMP/S” indication reaches to 70°C (158°F), go to step 3 in Procedure for COND 1. I
Overall Function Check EBS011JD

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a J
DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to the normal operating temperature. K
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute. L
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
engine ground.
6. Check the voltage when revving up to 4,000 rpm under no load M
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
A change of voltage should be more than 0.06V for 1 sec-
ond during this procedure.
If the voltage can be confirmed in step 6, step 7 is not nec-
essary.
7. Keep vehicle at idling for 10 minutes, then check the voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in 4th
gear position.
A change of voltage should be more than 0.06V for 1 sec- PBIB1607E
ond during this procedure.
8. If NG, go to EC-175, "Diagnostic Procedure" .

EC-171
 DTC P0139, P0159 HO2S2

Wiring Diagram EBS011JE

BANK 1

TBWT0533E

EC-172
 DTC P0139, P0159 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are D
74 OR 0 - Approximately 1.0V
(bank 1) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
E

[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor) F
● Idle speed

EC-173
 DTC P0139, P0159 HO2S2

BANK 2

TBWT0534E

EC-174
 DTC P0139, P0159 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are D
55 L/B 0 - Approximately 1.0V
(bank 2) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
E

[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor) F
● Idle speed

Diagnostic Procedure EBS011JF

1. RETIGHTEN GROUND SCREWS G

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. H

>> GO TO 2.
I

PBIB1071E
K

EC-175
 DTC P0139, P0159 HO2S2

2. CLEAR THE SELF-LEARNING DATA

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode
with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected?
Is it difficult to start engine?

SEF968Y

Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness connector, and restart
and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness con-
nector.
5. Make sure DTC P0102 is displayed.
6. Erase the DTC memory. Refer to EC-43, "HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
7. Make sure DTC P0000 is displayed.
8. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? PBIB1077E
Is it difficult to start engine?
Yes or No
Yes >> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to EC-180 or EC-189 .
No >> GO TO 3.

EC-176
 DTC P0139, P0159 HO2S2

3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT A

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 2 harness connector. EC

E
PBIB1908E

4. Check harness continuity between HO2S2 terminal 4 and ECM terminal 78.
Refer to Wiring Diagram. F

Continuity should exist.

5. Also check harness for short to ground and short to power. G
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. H

4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

I
1. Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
Terminals J
DTC Bank
ECM Sensor
P0139 74 1 1
K
P0159 55 1 2

Continuity should exist.

L
2. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Terminals M
DTC Bank
ECM Sensor
P0139 74 1 1
P0159 55 1 2

Continuity should not exist.

3. Also check harness for short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

EC-177
 DTC P0139, P0159 HO2S2

5. CHECK HEATED OXYGEN SENSOR 2

Refer to EC-178, "Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace malfunctioning heated oxygen sensor 2.

6. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS011PP

HEATED OXYGEN SENSOR 2

With CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.

SEF174Y

6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select

“HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II.

PBIB1672E

7. Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ±25%.

PBIB1920E

“HO2S2 (B1)/(B2)” should be above 0.73V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is −25%.
CAUTION:
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.

EC-178
 DTC P0139, P0159 HO2S2

● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. A
Without CONSULT-II
1. Start engine and warm it up to the normal operating temperature.
EC
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
C
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
engine ground.
6. Check the voltage when revving up to 4,000 rpm under no load D
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.73V at least once during this
procedure. E
If the voltage is above 0.73V at step 6, step 7 is not neces-
sary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or F
check the voltage when coasting from 80 km/h (50 MPH) in 5th
gear position.
The voltage should be below 0.18V at least once during this PBIB1607E
G
procedure.
8. If NG, replace heated oxygen sensor 2.
CAUTION: H
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. I

Removal and Installation EBS011JH

HEATED OXYGEN SENSOR 2 J

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-179
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION PFP:16600

On Board Diagnosis Logic EBS011JI

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calcu-
lates the necessary compensation to correct the offset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the
ECM judges the condition as the fuel injection system malfunction and lights up the MI (2 trip detection logic).
Sensor Input signal to ECM ECM function Actuator
Density of oxygen in exhaust gas Fuel injection
A/F sensors 1 Fuel injectors
(Mixture ratio feedback signal) control

Trouble diagnosis
DTC No. DTC detecting condition Possible cause
name
P0171 ● Intake air leaks
0171 ● A/F sensor 1
(Bank 1)
● Injectors
● Fuel injection system does not operate properly.
Fuel injection system ● Exhaust gas leaks
too lean ● The amount of mixture ratio compensation is too
P0174 ● Incorrect fuel pressure
large. (The mixture ratio is too lean.)
0174 ● Lack of fuel
(Bank 2)
● Mass air flow sensor
● Incorrect PCV hose connection

DTC Confirmation Procedure EBS011JJ

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CON-
SULT-II.
4. Clear the self-learning control coefficient by touching “CLEAR”.
5. Select “DATA MONITOR” mode with CONSULT-II.
6. Start engine again and let it idle for at least 10 minutes.
The 1st trip DTC P0171 or P0174 should be detected at this
stage, if a malfunction exists. If so, go to EC-184, "Diagnostic
Procedure" .
7. If it is difficult to start engine at step 6, the fuel injection system
has a malfunction, too.
8. Crank engine while depressing accelerator pedal. If engine
starts, go to EC-184, "Diagnostic Procedure" . If engine does not SEF968Y
start, check exhaust and intake air leak visually.

EC-180
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

WITH GST
1. Start engine and warm it up to normal operating temperature. A
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Disconnect mass air flow sensor harness connector. Then
restart and run engine for at least 5 seconds at idle speed. EC
4. Stop engine and reconnect mass air flow sensor harness con-
nector.
5. Select “MODE 3” with GST. Make sure DTC P0102 is detected. C
6. Select “MODE 4” with GST and erase the DTC P0102.
7. Start engine again and let it idle for at least 10 minutes.
D
8. Select “MODE 7” with GST. The 1st trip DTC P0171 or P0174
should be detected at this stage, if a malfunction exists. If so, go
to EC-184, "Diagnostic Procedure" . PBIB1077E
E
9. If it is difficult to start engine at step 7, the fuel injection system
has a malfunction.
10. Crank engine while depressing accelerator pedal. If engine starts, go to EC-184, "Diagnostic Procedure" .
If engine does not start, check exhaust and intake air leak visually. F

EC-181
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

Wiring Diagram EBS011JK

BANK 1

TBWT0535E

EC-182
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

BANK 2
A

EC

TBWT0536E

EC-183
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

Diagnostic Procedure EBS011JL

1. CHECK EXHAUST GAS LEAK

1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before three way catalyst 1.

PBIB1922E

OK or NG
OK >> GO TO 2.
NG >> Repair or replace.

2. CHECK FOR INTAKE AIR LEAK

1. Listen for an intake air leak after the mass air flow sensor.
2. Check PCV hose connection.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.

EC-184
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

3. CHECK A/F SENSOR 1 CIRCUIT FOR OPEN AND SHORT A

1. Turn ignition switch OFF.
2. Disconnect corresponding A/F sensor 1 harness connector.
EC

PBIB1911E
E
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals.
Refer to Wiring Diagram. F

Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal G
1 16 1 76
2 75 2 77
H
5 35 5 57
6 56 6 58

Continuity should exist. I

5. Check harness continuity between the following terminals and ground.

Refer to Wiring Diagram. J
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
K
1 16 1 76
2 75 2 77
5 35 5 57 L
6 56 6 58

Continuity should not exist. M

6. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK FUEL PRESSURE

1. Release fuel pressure to zero. Refer to EC-29, "FUEL PRESSURE RELEASE" .
2. Install fuel pressure gauge and check fuel pressure. Refer to EC-30, "FUEL PRESSURE CHECK" .

At idling: 350 kPa (3.5 bar, 3.57 kg/cm2 , 51 psi)

OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

EC-185
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

5. DETECT MALFUNCTIONING PART

Check the following.
● Fuel pump and circuit (Refer to EC-482 .)
● Fuel pressure regulator (Refer to EC-29 .)
● Fuel lines
● Fuel filter for clogging

>> Repair or replace.

6. CHECK MASS AIR FLOW SENSOR

With CONSULT-II
1. Install all removed parts.
2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II.
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
With GST
1. Install all removed parts.
2. Check mass air flow sensor signal in “MODE 1” with GST.
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
OK or NG
OK >> GO TO 7.
NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or
engine grounds. Refer to EC-135, "DTC P0102, P0103 MAF SENSOR" .

EC-186
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

7. CHECK FUNCTION OF INJECTORS A

With CONSULT-II
1. Start engine.
EC
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
3. Make sure that each circuit produces a momentary engine
speed drop. C

E
PBIB0133E

Without CONSULT-II F
1. Start engine.
2. Listen to each injector operating sound.
Clicking noise should be heard. G

PBIB1725E

J
OK or NG
OK >> GO TO 8.
NG >> Perform trouble diagnosis for EC-476, "INJECTOR CIRCUIT" . K
8. CHECK INJECTOR
1. Confirm that the engine is cooled down and there are no fire hazards near the vehicle. L
2. Turn ignition switch OFF.
3. Disconnect all injector harness connectors.
4. Remove injector gallery assembly. Refer to EM-36, "FUEL INJECTOR AND FUEL TUBE" . M
Keep fuel hose and all injectors connected to injector gallery.
5. For DTC P0171, reconnect injector harness connectors on bank 1.
For DTC P0174, reconnect injector harness connectors on bank 2.
6. Disconnect all ignition coil harness connectors.
7. Prepare pans or saucers under each injector.
8. Crank engine for about 3 seconds.
For DTC P0171, make sure that fuel sprays out from injectors
on bank1.
For DTC P0174, make sure that fuel sprays out from injectors
on bank 2.
Fuel should be sprayed evenly for each injector.
OK or NG
OK >> GO TO 9.
NG >> Replace injectors from which fuel does not spray out.
Always replace O-ring with new ones. PBIB1726E

EC-187
 DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

9. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-188
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION PFP:16600

A
On Board Diagnosis Logic EBS011JM

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calcu- EC
lates the necessary compensation to correct the offset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too rich.), the
ECM judges the condition as the fuel injection system malfunction and lights up the MI (2 trip detection logic).
C
Sensor Input signal to ECM ECM function Actuator
Density of oxygen in exhaust gas Fuel injection
A/F sensors 1 Fuel injectors
(Mixture ratio feedback signal) control
D

Trouble diagnosis
DTC No. DTC detecting condition Possible cause
name
E
P0172 ● A/F sensor 1
0172
● Fuel injection system does not operate properly. ● Injectors
(Bank 1) Fuel injection system
● The amount of mixture ratio compensation is too ● Exhaust gas leaks F
P0175 too rich
large. (The mixture ratio is too rich.) ● Incorrect fuel pressure
0175
(Bank 2) ● Mass air flow sensor
G
DTC Confirmation Procedure EBS011JN

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at H
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature. I
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CON-
SULT-II. J
4. Clear the self-learning control coefficient by touching “CLEAR”.
5. Select “DATA MONITOR” mode with CONSULT-II.
6. Start engine again and let it idle for at least 10 minutes. K
The 1st trip DTC P0172, P0175 should be detected at this stage,
if a malfunction exists. If so, go to EC-193, "Diagnostic Proce-
dure" . L
7. If it is difficult to start engine at step 6, the fuel injection system
has a malfunction, too.
8. Crank engine while depressing accelerator pedal. M
If engine starts, go to EC-193, "Diagnostic Procedure" . If engine SEF968Y
does not start, remove ignition plugs and check for fouling, etc.

EC-189
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Disconnect mass air flow sensor harness connector. Then
restart and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness con-
nector.
5. Select “MODE 3” with GST. Make sure DTC P0102 is detected.
6. Select “MODE 4” with GST and erase the DTC P0102.
7. Start engine again and let it idle for at least 10 minutes.
8. Select “MODE 7” with GST. The 1st trip DTC P0172 or P0175
should be detected at this stage, if a malfunction exists. If so, go
to EC-193, "Diagnostic Procedure" . PBIB1077E

9. If it is difficult to start engine at step 7, the fuel injection system

has a malfunction.
10. Crank engine while depressing accelerator pedal.
If engine starts, go to EC-193, "Diagnostic Procedure" . If engine does not start, remove ignition plugs and
check for fouling, etc.

EC-190
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

Wiring Diagram EBS011JO

BANK 1 A

EC

TBWT0535E

EC-191
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

BANK 2

TBWT0536E

EC-192
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

Diagnostic Procedure EBS011JP

1. CHECK EXHAUST GAS LEAK A

1. Start engine and run it at idle.

2. Listen for an exhaust gas leak before three way catalyst 1. EC

E
PBIB1922E

OK or NG
F
OK >> GO TO 2.
NG >> Repair or replace.

2. CHECK FOR INTAKE AIR LEAK G

Listen for an intake air leak after the mass air flow sensor.
OK or NG H
OK >> GO TO 3.
NG >> Repair or replace.
I

EC-193
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

3. CHECK A/F SENSOR 1 CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect corresponding A/F sensor 1 harness connector.

PBIB1911E

3. Disconnect ECM harness connector.

4. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should exist.

5. Check harness continuity between the following terminals and ground.

Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should not exist.

6. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK FUEL PRESSURE

1. Release fuel pressure to zero. Refer to EC-29, "FUEL PRESSURE RELEASE" .
2. Install fuel pressure gauge and check fuel pressure. Refer to EC-30, "FUEL PRESSURE CHECK" .

At idling: 350 kPa (3.5 bar, 3.57 kg/cm2 , 51 psi)

OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

EC-194
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

5. DETECT MALFUNCTIONING PART A

Check the following.
● Fuel pump and circuit (Refer to, EC-482 .)
● Fuel pressure regulator (Refer to EC-29 .) EC

>> Repair or replace.

C
6. CHECK MASS AIR FLOW SENSOR
With CONSULT-II D
1. Install all removed parts.
2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II.
E
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
With GST F
1. Install all removed parts.
2. Check mass air flow sensor signal in “MODE 1” with GST.
G
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
H
OK or NG
OK >> GO TO 7.
NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or
engine grounds. Refer to EC-135, "DTC P0102, P0103 MAF SENSOR" . I

EC-195
 DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION

7. CHECK FUNCTION OF INJECTORS

With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
3. Make sure that each circuit produces a momentary engine
speed drop.

PBIB0133E

Without CONSULT-II
1. Start engine.
2. Listen to each injector operating sound.
Clicking noise should be heard.

PBIB1725E

OK or NG
OK >> GO TO 8.
NG >> Perform trouble diagnosis for EC-476, "INJECTOR CIRCUIT" .

8. CHECK INJECTOR
1. Remove injector assembly. Refer to EM-36, "FUEL INJECTOR AND FUEL TUBE" .
Keep fuel hose and all injectors connected to injector gallery.
2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
3. Disconnect all injector harness connectors.
4. Disconnect all ignition coil harness connectors.
5. Prepare pans or saucers under each injectors.
6. Crank engine for about 3 seconds.
Make sure fuel does not drip from injector.
OK or NG
OK (Does not drip.)>>GO TO 9.
NG (Drips.)>>Replace the injectors from which fuel is dripping. Always replace O-ring with new one.

9. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-196
 DTC P0222, P0223 TP SENSOR

DTC P0222, P0223 TP SENSOR PFP:16119

A
Component Description EBS011JQ

Electric throttle control actuator consists of throttle control motor,

throttle position sensor, etc. The throttle position sensor responds to EC
the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi- C
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig- D
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
PBIB0145E
tion.
E
CONSULT-II Reference Value in Data Monitor Mode EBS011JR

Specification data are reference values.

F
MONITOR ITEM CONDITION SPECIFICATION
● Ignition switch: ON Accelerator pedal: Fully released More than 0.36V
THRTL SEN1 (Engine stopped)
THRTL SEN2* Accelerator pedal: Fully depressed Less than 4.75V G
● Shift lever: 1st
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.

On Board Diagnosis Logic EBS011JS

H

These self-diagnoses have the one trip detection logic.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause I
P0222 Throttle position sensor An excessively low voltage from the TP sensor ● Harness or connectors
0222 1 circuit low input 1 is sent to ECM. (The TP sensor 1 circuit is open or
shorted.) J
P0223 Throttle position sensor An excessively high voltage from the TP sen-
● Electric throttle control actuator
0223 1 circuit high input sor 1 is sent to ECM.
(TP sensor 1)
K
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode an the MI lights up.
L
Engine operation condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. M
So, the acceleration will be poor.

EC-197
 DTC P0222, P0223 TP SENSOR

DTC Confirmation Procedure EBS011JT

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-200, "Diagnostic Procedure" .

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-198
 DTC P0222, P0223 TP SENSOR

Wiring Diagram EBS011JU

EC

TBWT0538E

EC-199
 DTC P0222, P0223 TP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Sensor power supply
47 W/R [Ignition switch: ON] Approximately 5V
(Throttle position sensor)
[Ignition switch: ON]
● Engine stopped
More than 0.36V
● Shift lever: 1st
● Accelerator pedal fully released
50 G Throttle position sensor 1
[Ignition switch: ON]
● Engine stopped
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully depressed
[Engine is running]
Sensor ground
66 L ● Warm-up condition Approximately 0V
(Throttle position sensor)
● Idle speed
[Ignition switch: ON]
● Engine stopped
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully released
69 Y Throttle position sensor 2
[Ignition switch: ON]
● Engine stopped
More than 0.36V
● Shift lever: 1st
● Accelerator pedal fully depressed

Diagnostic Procedure EBS011JV

1. RETIGHTEN GROUND SCREWS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

EC-200
 DTC P0222, P0223 TP SENSOR

2. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT A

1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
EC

D
PBIB1079E

3. Check voltage between electric throttle control actuator terminal E

1 and ground with CONSULT-II or tester.
Voltage: Approximately 5V
F
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors. G

PBIB0082E H

3. CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. I
2. Disconnect ECM harness connector.
3. Check harness continuity between electric throttle control actuator terminal 5 and ECM terminal 66.
Refer to Wiring Diagram. J

Continuity should exist.

4. Also check harness for short to ground and short to power. K
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. L

4. CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
M
1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 4.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK THROTTLE POSITION SENSOR

Refer to EC-202, "Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.

EC-201
 DTC P0222, P0223 TP SENSOR

6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

7. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS011JW

THROTTLE POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Turn ignition switch ON.
4. Set selector lever to 1st position.
5. Check voltage between ECM terminals 50 (TP sensor 1 signal),
69 (TP sensor 2 signal) and engine ground under the following
conditions.
Terminal Accelerator pedal Voltage

50 Fully released More than 0.36V

(Throttle position sensor 1) Fully depressed Less than 4.75V

69 Fully released Less than 4.75V

(Throttle position sensor 2) Fully depressed More than 0.36V
6. If NG, replace electric throttle control actuator and go to the next PBIB1658E

step.
7. Perform EC-27, "Throttle Valve Closed Position Learning" .
8. Perform EC-27, "Idle Air Volume Learning" .
Removal and Installation EBS011JX

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" .

EC-202
 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE

DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-

FIRE PFP:00000 A

On Board Diagnosis Logic EBS011JY

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crank- EC
shaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring.
Sensor Input Signal to ECM ECM function
Crankshaft position sensor (POS) Engine speed On board diagnosis of misfire C

The misfire detection logic consists of the following two conditions.

1. One Trip Detection Logic (Three Way Catalyst Damage) D
On the first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to over-
heating, the MI will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change. E
When the misfire condition decreases to a level that will not damage the TWC, the MI will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MI will blink.
When the misfire condition decreases to a level that will not damage the TWC, the MI will remain on. F
If another misfire condition occurs that can damage the TWC, the MI will begin to blink again.
2. Two Trip Detection Logic (Exhaust quality deterioration)
For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MI will only light G
when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sensor
signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.
H
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0300 Multiple cylinder misfire
Multiple cylinder misfire. ● Improper spark plug I
0300 detected
● Insufficient compression
P0301 No.1 cylinder misfire
No. 1 cylinder misfires.
0301 detected ● Incorrect fuel pressure
P0302 No. 2 cylinder misfire ● The injector circuit is open or shorted J
No. 2 cylinder misfires.
0302 detected ● Fuel injectors
P0303 No. 3 cylinder misfire ● Intake air leak
No. 3 cylinder misfires.
0303 detected ● The ignition signal circuit is open or K
P0304 No. 4 cylinder misfire shorted
No. 4 cylinder misfires.
0304 detected ● Lack of fuel
P0305 No. 5 cylinder misfire ● Signal plate L
No. 5 cylinder misfires.
0305 detected
● Air fuel ratio (A/F) sensor 1
P0306 No. 6 cylinder misfire ● Incorrect PCV hose connection
No. 6 cylinder misfires.
0306 detected M
DTC Confirmation Procedure EBS011JZ

CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

EC-203
 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE

WITH CONSULT-II
1. Turn ignition switch ON, and select “DATA MONITOR” mode
with CONSULT-II.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Restart engine and let it idle for about 15 minutes.
5. If 1st trip DTC is detected, go to EC-204, "Diagnostic Procedure"
.
NOTE:
If 1st trip DTC is not detected during above procedure, performing
the following procedure is advised. PBIB0164E

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for a certain
time. Refer to the table below.
Hold the accelerator pedal as steady as possible.

The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following con-
ditions should be satisfied at the same time.
Engine speed Engine speed in the freeze frame data ± 400 rpm
Vehicle speed Vehicle speed in the freeze frame data ± 10 km/h (5 MPH)
When the freeze frame data shows lower than 70 °C (158 °F),
Engine coolant temperature T should be lower than 70 °C (158 °F).
(T) condition When the freeze frame data shows higher than or equal to 70 °C (158 °F),
T should be higher than or equal to 70 °C (158 °F).

The time to driving varies according to the engine speed in the freeze frame data.
Engine speed Time
Around 1,000 rpm Approximately 10 minutes
Around 2,000 rpm Approximately 5 minutes
More than 3,000 rpm Approximately 3.5 minutes

WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic Procedure EBS011K0

1. CHECK FOR INTAKE AIR LEAK AND PCV HOSE

1. Start engine and run it at idle speed.
2. Listen for the sound of the intake air leak.
3. Check PCV hose connection.
OK or NG
OK >> GO TO 2.
NG >> Discover air leak location and repair.

2. CHECK FOR EXHAUST SYSTEM CLOGGING

Stop engine and visually check exhaust tube, three way catalyst and muffler for dents.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace it.

EC-204
 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE

3. PERFORM POWER BALANCE TEST A

With CONSULT-II
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
EC
2. Is there any cylinder which does not produce a momentary
engine speed drop?

PBIB0133E
E
Without CONSULT-II
When disconnecting each injector harness connector one at a time,
is there any cylinder which does not produce a momentary engine F
speed drop?

PBIB0997E

I
Yes or No
Yes >> GO TO 4.
No >> GO TO 7. J

4. CHECK INJECTOR
K
Does each injector make an operating sound at idle?
Yes or No
Yes >> GO TO 5. L
No >> Check injector(s) and circuit(s). Refer to EC-476,
"INJECTOR CIRCUIT" .
M

PBIB1725E

EC-205
 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE

5. CHECK IGNITION SPARK

1. Remove ignition coil assembly from rocker cover.
2. Remove spark plug from ignition coil assembly
3. Connect a known good spark plug to the ignition coil.
4. Place end of spark plug against a suitable ground and crank engine.
5. Check for spark.
OK or NG
OK >> GO TO 6.
NG >> Check ignition coil, power transistor and their circuits.
Refer to EC-458, "IGNITION SIGNAL" .

SEF575Q

6. CHECK SPARK PLUGS

Remove the spark plugs and check for fouling, etc.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace spark plug(s) with standard type
one(s). For spark plug type, refer to, MA-22, "Changing
Spark Plugs (Platinum-Tipped Type)" .

SEF156I

7. CHECK COMPRESSION PRESSURE

Check compression pressure. Refer to EM-89, "CHECKING COMPRESSION PRESSURE" .
OK or NG
OK >> GO TO 8.
NG >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.

8. CHECK FUEL PRESSURE

1. Install all removed parts.
2. Release fuel pressure to zero. Refer to EC-29, "FUEL PRESSURE RELEASE" .
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-30, "FUEL PRESSURE CHECK" .

At idle: Approx. 350 kPa (3.5 bar, 3.57 kg/cm2 , 51 psi)

OK or NG
OK >> GO TO 10.
NG >> GO TO 9.

EC-206
 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE

9. DETECT MALFUNCTIONING PART A

Check the following.
● Fuel pump and circuit (Refer to EC-482, "FUEL PUMP CIRCUIT" .)
● Fuel pressure regulator (Refer to EC-30, "FUEL PRESSURE CHECK" .) EC
● Fuel lines
● Fuel filter for clogging
C

>> Repair or replace.

10. CHECK IGNITION TIMING D

Check the following items. Refer to EC-60, "Basic Inspection" .

E
Items Specifications
Target idle speed 650 ± 50 rpm
Ignition timing 15 ± 5° BTDC F
OK or NG
OK >> GO TO 11.
NG >> Follow the EC-60, "Basic Inspection" . G

EC-207
 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE

11. CHECK A/F SENSOR 1 CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect corresponding A/F sensor 1 harness connector.

PBIB1911E

3. Disconnect ECM harness connector.

4. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should exist.

5. Check harness continuity between the following terminals and ground.

Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should not exist.

6. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 12.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

12. CHECK A/F SENSOR 1 HEATER

Refer to EC-257, "Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace A/F sensor 1.

EC-208
 DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE

13. CHECK MASS AIR FLOW SENSOR A

With CONSULT-II
Check mass air flow sensor signal in “DATA MONITOR” mode with CONSULT-II.
2.0 - 6.0 g·m/sec: at idling EC
7.0 - 20.0 g·m/sec: at 2,500 rpm
With GST C
Check mass air flow sensor signal in MODE 1 with GST.
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm D

OK or NG
OK >> GO TO 14. E
NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or
engine grounds. Refer to EC-135, "DTC P0102, P0103 MAF SENSOR" .

14. CHECK SYMPTOM MATRIX CHART F

Check items on the rough idle symptom in EC-65, "Symptom Matrix Chart" .
OK or NG G
OK >> GO TO 15.
NG >> Repair or replace.
H
15. ERASE THE 1ST TRIP DTC
Some tests may cause a 1st trip DTC to be set.
Erase the 1st trip DTC from the ECM memory after performing the tests. Refer to EC-43, "HOW TO ERASE I
EMISSION-RELATED DIAGNOSTIC INFORMATION" .

>> GO TO 16. J

16. CHECK INTERMITTENT INCIDENT

K
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END L

EC-209
 DTC P0327, P0328 KS

DTC P0327, P0328 KS PFP:22060

Component Description EBS011K1

The knock sensor is attached to the cylinder block. It senses engine

knocking using a piezoelectric element. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.

PBIB0998E

On Board Diagnosis Logic EBS011K2

The MI will not light up for these diagnoses.

Trouble diagnosis
DTC No. DTC detected condition Possible cause
name
P0327 Knock sensor circuit An excessively low voltage from the sensor is
● Harness or connectors
0327 low input sent to ECM.
(The sensor circuit is open or shorted.)
P0328 Knock sensor circuit An excessively high voltage from the sensor is
● Knock sensor
0328 high input sent to ECM.

DTC Confirmation Procedure EBS011K3

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II.
2. Start engine and run it for at least 5 seconds at idle speed.
3. If 1st trip DTC is detected, go to EC-212, "Diagnostic Procedure"
.

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-210
 DTC P0327, P0328 KS

Wiring Diagram EBS011K4

EC

TBWT0539E

EC-211
 DTC P0327, P0328 KS

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
15 W Knock sensor Approximately 2.5V
● Idle speed

Diagnostic Procedure EBS011K5

1. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check resistance between ECM terminal 15 and engine ground. Refer to Wiring Diagram.
NOTE:
It is necessary to use an ohmmeter which can measure more than 10 MΩ.
Resistance: Approximately 532 - 588 kΩ [at 20°C (68°F)]
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.

2. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect knock sensor harness connector.
2. Check harness continuity between ECM terminal 15 and knock
sensor terminal 1.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
PBIB0998E

3. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors F14, F229
● Harness for open or short between ECM and knock sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK KNOCK SENSOR

Refer to EC-213, "Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace knock sensor.

EC-212
 DTC P0327, P0328 KS

5. RETIGHTEN GROUND SCREWS A

Loosen and retighten engine ground screws.

>> GO TO 6. EC

D
PBIB1071E

6. CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT E

1. Turn ignition switch OFF.

2. Disconnect knock sensor harness connector.
F
3. Check harness continuity between knock sensor terminal 2 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
G
4. Also check harness for short to power.
OK or NG
OK >> GO TO 8. H
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART

I
Check the following.
● Harness connectors F14, F229
● Harness connectors F103, F151 J
● Harness connectors F3, E12
● Harness for open or short between knock sensor terminal 2 and engine ground
K
>> Repair open circuit or short power in harness or connectors.

8. CHECK INTERMITTENT INCIDENT L

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

M
>> INSPECTION END
Component Inspection EBS011K6

KNOCK SENSOR
Check resistance between knock sensor terminal 1 and ground.
NOTE:
It is necessary to use an ohmmeter which can measure more
than 10 MΩ.
Resistance: Approximately 532 - 588 kΩ [at 20°C (68°F)]
CAUTION:
Do not use any knock sensors that have been dropped or phys-
ically damaged. Use only new ones.

SEF111Y

EC-213
 DTC P0327, P0328 KS

Removal and Installation EBS011K7

KNOCK SENSOR
Refer to EM-106, "CYLINDER BLOCK" .

EC-214
 DTC P0335 CKP SENSOR (POS)

DTC P0335 CKP SENSOR (POS) PFP:23731

A
Component Description EBS011K8

The crankshaft position sensor (POS) is located on the oil pan facing
the gear teeth (cogs) of the signal plate. It detects the fluctuation of EC
the engine revolution.
The sensor consists of a permanent magnet and Hall IC.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change. C
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor D
changes.
The ECM receives the voltage signal and detects the fluctuation of
PBIB0562E
the engine revolution.
E
CONSULT-II Reference Value in Data Monitor Mode EBS011K9

Specification data are reference values.

F
MONITOR ITEM CONDITION SPECIFICATION
● Run engine and compare CONSULT-II value with the tachometer indica- Almost the same speed as the
ENG SPEED
tion. tachometer indication.
G
On Board Diagnosis Logic EBS011KA

DTC No. Trouble diagnosis name DTC detecting condition Possible cause H
● The crankshaft position sensor (POS) signal
is not detected by the ECM during the first
few seconds of engine cranking. I
● Harness or connectors
● The proper pulse signal from the crankshaft (The sensor circuit is open or shorted)
P0335 Crankshaft position
position sensor (POS) is not sent to ECM
0335 sensor (POS) circuit ● Crankshaft position sensor (POS)
while the engine is running.
● Signal plate J
● The crankshaft position sensor (POS) signal
is not in the normal pattern during engine
running.
K
DTC Confirmation Procedure EBS011KB

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at L
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V with igni-
M
tion switch ON.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Crank engine for at least 2 seconds and run it for at least 5 sec-
onds at idle speed.
3. If 1st trip DTC is detected, go to EC-217, "Diagnostic Procedure"
.

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-215
 DTC P0335 CKP SENSOR (POS)

Wiring Diagram EBS011KC

TBWT0540E

EC-216
 DTC P0335 CKP SENSOR (POS)

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. A
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
C
Approximately 1.6V
[Engine is running]
● Warm-up condition
D
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle. E
PBIB1041E
Crankshaft position sensor
13 W/L
(POS)
Approximately 1.4V
F

[Engine is running]
● Engine speed is 2,000 rpm. G

PBIB1042E
H
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure EBS011KD

I
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. J

>> GO TO 2.
K

PBIB1071E
M

EC-217
 DTC P0335 CKP SENSOR (POS)

2. CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT

1. Disconnect crankshaft position (CKP) sensor (POS) harness
connector.
2. Turn ignition switch ON.

PBIB1279E

3. Check voltage between CKP sensor (POS) terminal 1 and

ground with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.

PBIB0664E

3. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● Harness for open or short between crankshaft position sensor (POS) and ECM
● Harness for open or short between crankshaft position sensor (POS) and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between CKP sensor (POS) terminal 3 and engine ground. Refer to Wiring Dia-
gram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● Harness connectors F103, F151
● Harness for open or short between crankshaft position sensor (POS) and ground

>> Repair open circuit or short to power in harness or connectors.

EC-218
 DTC P0335 CKP SENSOR (POS)

6. CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT A
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 13 and CKP sensor (POS) terminal 2.
Refer to Wiring Diagram. EC

Continuity should exist.

3. Also check harness for short to ground and short to power. C
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. D

7. CHECK CRANKSHAFT POSITION SENSOR (POS)

Refer to EC-220, "Component Inspection" . E
OK or NG
OK >> GO TO 8.
NG >> Replace crankshaft position sensor (POS). F

8. CHECK GEAR TOOTH

G
Visually check for chipping signal plate gear tooth.
OK or NG
OK >> GO TO 9. H
NG >> Replace the signal plate.

9. CHECK INTERMITTENT INCIDENT I

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END J

EC-219
 DTC P0335 CKP SENSOR (POS)

Component Inspection EBS011KE

CRANKSHAFT POSITION SENSOR (POS)

1. Loosen the fixing bolt of the sensor.
2. Disconnect crankshaft position sensor (POS) harness connector.
3. Remove the sensor.
4. Visually check the sensor for chipping.

PBIB0563E

5. Check resistance as shown in the figure.

Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
1 (+) - 2 (-)
1 (+) - 3 (-) Except 0 or ∞
2 (+) - 3 (-)

PBIB0564E

Removal and Installation EBS011KF

CRANKSHAFT POSITION SENSOR (POS)

Refer to EM-27, "OIL PAN AND OIL STRAINER" .

EC-220
 DTC P0340, P0345 CMP SENSOR (PHASE)

DTC P0340, P0345 CMP SENSOR (PHASE) PFP:23731

A
Component Description EBS011KG

The camshaft position sensor (PHASE) senses the retraction of

intake valve camshaft to identify a particular cylinder. The camshaft EC
position sensor (PHASE) senses the piston position.
When the crankshaft position sensor (POS) system becomes inoper-
ative, the camshaft position sensor (PHASE) provides various con-
trols of engine parts instead, utilizing timing of cylinder identification C
signals.
The sensor consists of a permanent magnet and Hall IC.
When engine is running, the high and low parts of the teeth cause D
the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
PBIB0562E
change.
E
Due to the changing magnetic field, the voltage from the sensor changes.
CONSULT-II Reference Value in Data Monitor Mode EBS011KH

Specification data are reference values. F

MONITOR ITEM CONDITION SPECIFICATION
● Run engine and compare CONSULT-II value with the tachometer indica- Almost the same speed as the
ENG SPEED
tion. tachometer indication.
G

On Board Diagnosis Logic EBS011KI

H
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0340 ● Harness or connectors
● The cylinder No. signal is not sent to ECM
0340 (The sensor circuit is open or shorted) I
for the first few seconds during engine
(Bank 1) ● Camshaft position sensor (PHASE)
cranking.
Camshaft position sen- ● Camshaft (Intake)
● The cylinder No. signal is not sent to ECM
P0345 sor (PHASE) circuit
during engine running. ● Starter motor (Refer to SC-15 .) J
0345
(Bank 2) ● The cylinder No. signal is not in the normal ● Starting system circuit (Refer to SC-15 .)
pattern during engine running.
● Dead (Weak) battery
K
DTC Confirmation Procedure EBS011KJ

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at L
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V with igni-
tion switch ON. M

WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Crank engine for at least 2 seconds and run it for at least 5 sec-
onds at idle speed.
4. If 1st trip DTC is detected, go to EC-225, "Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to next step.
5. Maintaining engine speed at more than 800 rpm for at least 5
seconds.
6. If 1st trip DTC is detected, go to EC-225, "Diagnostic Procedure"
. SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-221
 DTC P0340, P0345 CMP SENSOR (PHASE)

Wiring Diagram EBS011KK

BANK 1

TBWT0541E

EC-222
 DTC P0340, P0345 CMP SENSOR (PHASE)

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. A
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
C
1.0 - 4.0V
[Engine is running]
● Warm-up condition
D
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle. E
PBIB1039E
Camshaft position sensor
33 R
(PHASE) (bank 1)
1.0 - 4.0V
F

[Engine is running]
● Engine speed is 2,000 rpm. G

PBIB1040E
H
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-223
 DTC P0340, P0345 CMP SENSOR (PHASE)

BANK 2

TBWT0542E

EC-224
 DTC P0340, P0345 CMP SENSOR (PHASE)

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. A
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
C
1.0 - 4.0V
[Engine is running]
● Warm-up condition
D
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle. E
PBIB1039E
Camshaft position sensor
14 R/L
(PHASE) (bank 2)
1.0 - 4.0V
F

[Engine is running]
● Engine speed is 2,000 rpm. G

PBIB1040E
H
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure EBS011KL

I
1. CHECK STARTING SYSTEM
Turn ignition switch to START position.
J
Does the engine turn over?
Does the starter motor operate?
Yes or No K
Yes >> GO TO 2.
No >> Check starting system. (Refer to SC-15, "STARTING SYSTEM" .)
L
2. RETIGHTEN GROUND SCREWS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. M

>> GO TO 3.

PBIB1071E

EC-225
 DTC P0340, P0345 CMP SENSOR (PHASE)

3. CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT

1. Disconnect camshaft position (CMP) sensor (PHASE) harness connector.

PBIB1638E

2. Turn ignition switch ON.

3. Check voltage between CMP sensor (PHASE) terminal 3 and
ground with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.

SEF481Y

4. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● Harness for open or short between camshaft position sensor (PHASE) and ECM
● Harness for open or short between camshaft position sensor (PHASE) and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK CMP SENSOR (PHASE) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between CMP sensor (PHASE) terminal 1 and engine ground.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.

6. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors F103, F151
● Harness connectors E12, F3
● Harness for open or short between CMP sensor (PHASE) and engine ground

>> Repair open circuit or short to power in harness or connectors.

EC-226
 DTC P0340, P0345 CMP SENSOR (PHASE)

7. CHECK CMP SENSOR (PHASE) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT A
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 33 or 14 and CMP sensor (PHASE) terminal 2.
Refer to Wiring Diagram. EC

Continuity should exist.

3. Also check harness for short to ground and short to power. C
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. D

8. CHECK CAMSHAFT POSITION SENSOR (PHASE)

Refer to EC-228, "Component Inspection" . E
OK or NG
OK >> GO TO 9.
NG >> Replace camshaft position sensor (PHASE). F

9. CHECK CAMSHAFT (INTAKE)

G
Check the following.
● Accumulation of debris to the signal plate of camshaft rear end
● Chipping signal plate of camshaft rear end H
OK or NG
OK >> GO TO 10.
NG >> Remove debris and clean the signal plate of camshaft I
rear end or replace camshaft.

SEC905C

K
10. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
L
>> INSPECTION END

EC-227
 DTC P0340, P0345 CMP SENSOR (PHASE)

Component Inspection EBS011KM

CAMSHAFT POSITION SENSOR (PHASE)

1. Loosen the fixing bolt of the sensor.
2. Disconnect camshaft position sensor (PHASE) harness connector.
3. Remove the sensor.
4. Visually check the sensor for chipping.

PBIB0563E

5. Check resistance as shown in the figure.

Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
1 (+) - 2 (-)
1 (+) - 3 (-) Except 0 or ∞
2 (+) - 3 (-)

PBIB0564E

Removal and Installation EBS011KN

CAMSHAFT POSITION SENSOR (PHASE)

Refer to EM-74, "CAMSHAFT" .

EC-228
 DTC P0420, P0430 THREE WAY CATALYST FUNCTION

DTC P0420, P0430 THREE WAY CATALYST FUNCTION PFP:20905

A
On Board Diagnosis Logic EBS011KO

The ECM monitors the switching frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2.
A three way catalyst 1 with high oxygen storage capacity will indicate a low switching frequency of heated oxy- EC
gen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will
increase.
When the frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2 approaches a specified
limit value, the three way catalyst 1 malfunction is diagnosed. C

F
PBIB1923E

G
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0420 ● Three way catalyst 1
0420 ● Exhaust tube H
(Bank 1) ● Three way catalyst 1 does not operate prop- ● Intake air leaks
Catalyst system effi- erly.
● Fuel injectors
P0430 ciency below threshold ● Three way catalyst 1 does not have enough
● Fuel injector leaks I
0430 oxygen storage capacity.
(Bank 2) ● Spark plug
● Improper ignition timing
J
DTC Confirmation Procedure EBS011KP

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at K
least 10 seconds before conducting the next test.
WITH CONSULT-II
L
TESTING CONDITION:
Do not hold engine speed for more than the specified minutes below.
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II. M
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Make sure that “COOLAN TEMP/S” indicates more than 70°C
(158°F). SEF189Y
If not, warm up engine and go to next step when “COOLAN
TEMP/S” indication reaches to 70°C (158°F).
7. Open engine hood.

EC-229
 DTC P0420, P0430 THREE WAY CATALYST FUNCTION

8. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUP-

PORT” mode with CONSULT-II.
9. Rev engine up to 2,000 to 3,000 rpm and hold it for 3 consecu-
tive minutes then release the accelerator pedal completely.
If “INCMP” of “CATALYST” changed to “CMPLT”, go to step 12.
10. Wait 5 seconds at idle.

PBIB0566E

11. Rev engine up to 2,000 to 3,000 rpm and maintain it until

“INCMP” of “CATALYST” changes to “CMPLT” (It will take
approximately 5 minutes).
If not “CMPLT”, stop engine and cool it down to less than 70°C
(158°F) and then retest from step 1.

PBIB0567E

12. Select “SELF-DIAG RESULTS” mode with CONSULT-II.

13. Confirm that the 1st trip DTC is not detected.
If the 1st trip DTC is detected, go to EC-231, "Diagnostic Proce-
dure" .

SEF535Z

Overall Function Check EBS011KQ

Use this procedure to check the overall function of the three way catalyst 1. During this check, a DTC might
not be confirmed.
WITH GST
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Open engine hood.
6. Set voltmeters probes between ECM terminals 74 [HO2S2
(bank 1) signal], 55 [HO2S2 (bank 2) signal] and engine ground.
7. Keep engine speed at 2,500 rpm constant under no load.
8. Make sure that the voltage does not vary for more than 5 sec-
onds.
If the voltage fluctuation cycle takes less than 5 seconds, go to
EC-231, "Diagnostic Procedure" .
● 1 cycle: 0.6 - 1.0 → 0 - 0.3 → 0.6 - 1.0

PBIB1108E

EC-230
 DTC P0420, P0430 THREE WAY CATALYST FUNCTION

Diagnostic Procedure EBS011KR

1. CHECK EXHAUST SYSTEM A

Visually check exhaust tubes and muffler for dent.

OK or NG EC
OK >> GO TO 2.
NG >> Repair or replace.
C
2. CHECK EXHAUST GAS LEAK
1. Start engine and run it at idle.
D
2. Listen for an exhaust gas leak before the three way catalyst 1.

PBIB1922E

OK or NG H
OK >> GO TO 3.
NG >> Repair or replace.

3. CHECK INTAKE AIR LEAK I

Listen for an intake air leak after the mass air flow sensor.
OK or NG J
OK >> GO TO 4.
NG >> Repair or replace.
K
4. CHECK IGNITION TIMING
Check the following items. Refer to EC-60, "Basic Inspection" .
L
Items Specifications
Target idle speed 650 ± 50 rpm
Ignition timing 15 ± 5° BTDC
M

OK or NG
OK >> GO TO 5.
NG >> Follow the EC-60, "Basic Inspection" .

EC-231
 DTC P0420, P0430 THREE WAY CATALYST FUNCTION

5. CHECK INJECTORS
1. Stop engine and then turn ignition switch ON.
2. Check voltage between ECM terminals 21, 22, 23, 40, 41, 42
and ground with CONSULT-II or tester.
Refer to Wiring Diagram for Injectors, EC-477 .
Battery voltage should exist.
OK or NG
OK >> GO TO 6.
NG >> Perform EC-478, "Diagnostic Procedure" .

PBIB1172E

6. CHECK IGNITION SPARK

1. Turn ignition switch OFF.
2. Disconnect all injector harness connectors.
3. Disconnect ignition coil assembly from rocker cover.
4. Connect a known good spark plug to the ignition coil assembly.
5. Place end of spark plug against a suitable ground and crank engine.
6. Check for spark.
OK or NG
OK >> GO TO 7.
NG >> Check ignition coil with power transistor and their circuit.
Refer to EC-458, "IGNITION SIGNAL" .

SEF575Q

7. CHECK INJECTOR
1. Turn ignition switch OFF.
2. Remove injector assembly.
Refer to EM-36, "FUEL INJECTOR AND FUEL TUBE" .
Keep fuel hose and all injectors connected to injector gallery.
3. Disconnect all ignition coil harness connectors.
4. Turn ignition switch ON.
Make sure fuel does not drip from injector.
OK or NG
OK (Does not drip.)>>GO TO 8.
NG (Drips.)>>Replace the injector(s) from which fuel is dripping.

8. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

Trouble is fixed.>>INSPECTION END

Trouble is not fixed.>>Replace three way catalyst assembly.

EC-232
 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID

VALVE PFP:14920 A

Description EBS011KS

SYSTEM DESCRIPTION EC
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*1
C
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
D
Battery Battery voltage*1 EVAP canister EVAP canister purge vol-
Throttle position sensor Throttle position purge flow control ume control solenoid valve

Accelerator pedal position sensor Accelerator pedal position E

Density of oxygen in exhaust gas
Air fuel ratio (A/F) sensor 1
(Mixture ratio feedback signal)

Wheel sensor*2 Vehicle speed F

*1:ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
G
This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-
sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is H
determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor
from the EVAP canister is regulated as the air flow changes.
COMPONENT DESCRIPTION I
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is J
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
K

SEF337U

CONSULT-II Reference Value in Data Monitor Mode EBS011KT M

Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
● Engine: After warming up Idle 0%
● Shift lever: Neutral
PURG VOL C/V
● Air conditioner switch: OFF 2,000 rpm —
● No-load

EC-233
 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

On Board Diagnosis Logic EBS011KU

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
EVAP canister purge volume (The solenoid valve circuit is open or
P0444 An excessively low voltage signal is sent shorted.)
control solenoid valve circuit
0444 to ECM through the valve
open ● EVAP canister purge volume control
solenoid valve
● Harness or connectors
EVAP canister purge volume (The solenoid valve circuit is shorted.)
P0445 An excessively high voltage signal is sent
control solenoid valve circuit
0445 to ECM through the valve ● EVAP canister purge volume control
shorted
solenoid valve

DTC Confirmation Procedure EBS011KV

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 13 seconds.
4. If 1st trip DTC is detected, go to EC-237, "Diagnostic Procedure"
.

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-234
 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

Wiring Diagram EBS011KW

EC

TBWT0543E

EC-235
 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
BATTERY VOLTAGE
(11 - 14V)

[Engine is running]
● Idle speed

SEC990C
EVAP canister purge vol-
45 G/W
ume control solenoid valve BATTERY VOLTAGE
(11 - 14V)

[Engine is running]
● Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine).

SEC991C

[Engine is running]
[Ignition switch: OFF]
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L
(Self shut-off)
[Ignition switch: OFF]
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
119 R/W
(LHD)
BATTERY VOLTAGE
Y Power supply for ECM [Ignition switch: ON]
(11 - 14V)
(RHD)
120 P

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-236
 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

Diagnostic Procedure EBS011KX

1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIR- A
CUIT
1. Turn ignition switch OFF. EC
2. Disconnect EVAP canister purge volume control solenoid valve
harness connector.
3. Turn ignition switch ON. C

E
PBIB1637E

4. Check voltage between EVAP canister purge volume control F

solenoid valve terminal 1 and ground with CONSULT-II or tester.
Voltage: Battery voltage
G
OK or NG
OK >> GO TO 3.
NG >> GO TO 2. H

PBIB0148E
I

2. DETECT MALFUNCTIONING PART

J
Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7 K
● 15A fuse
● Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
● Harness for open or short between EVAP canister purge volume control solenoid valve and ECM L

>> Repair harness or connectors.

M
3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIR-
CUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid
valve terminal 2. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK (With CONSULT-II)>>GO TO 4.
OK (Without CONSULT-II)>>GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

EC-237
 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

4. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine.
3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that engine speed varies according to the
valve opening.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

PBIB1678E

5. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to EC-238, "Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace EVAP canister purge volume control solenoid valve.

6. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS011KY

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-II
Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.
Condition Air passage continuity
(PURG VOL CONT/V value) between A and B
100% Yes
0% No

PBIB0149E

Without CONSULT-II
Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.
Air passage continuity
Condition
between A and B
12V direct current supply between
Yes
terminals 1 and 2
No supply No

PBIB0150E

EC-238
 DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

Removal and Installation EBS011KZ

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE A

Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" .

EC

EC-239
 DTC P0500 VSS

DTC P0500 VSS PFP:32702

Description EBS011L0

NOTE:
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-121, "DTC U1000, U1001 CAN COMMUNICATION LINE" .
The vehicle speed signal is sent to the “unified meter and A/C amp.” from the ESP/TCS/ABS control unit by
CAN communication line. The “unified meter and A/C amp.” then sends the signal to the ECM by CAN com-
munication line.
On Board Diagnosis Logic EBS011L1

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
(The CAN communication line is open or
shorted)

The almost 0 km/h (0 MPH) signal from ● Harness or connectors

P0500 (The vehicle speed signal circuit is open or
Vehicle speed sensor vehicle speed sensor is sent to ECM
0500 shorted)
even when vehicle is being driven.
● Wheel sensor
● Unified meter and A/C amp.
● ESP/TCS/ABS control unit

DTC Confirmation Procedure EBS011L2

CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Steps 1 and 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine (ESP switch OFF).
2. Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT-II. The vehicle speed on CONSULT-
II should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
If NG, go to EC-241, "Diagnostic Procedure" .
If OK, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-II.
4. Warm engine up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive sec-
onds.
ENG SPEED 1,600 - 6,000 rpm
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL 5 - 31.8 msec
Selector lever Except Neutral position
PW/ST SIGNAL OFF

6. If 1st trip DTC is detected, go to EC-241, "Diagnostic Procedure"

. SEF196Y

EC-240
 DTC P0500 VSS

Overall Function Check EBS011L3

A
Use this procedure to check the overall function of the vehicle speed sensor circuit. During this check, a 1st
trip DTC might not be confirmed.
WITH GST EC
1. Lift up drive wheels.
2. Start engine.
3. Read vehicle speed sensor signal in “MODE 1” with GST. C
The vehicle speed sensor on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with
suitable gear position.
4. If NG, go to EC-241, "Diagnostic Procedure" . D
Diagnostic Procedure EBS011L4

1. CHECK DTC WITH ESP/TCS/ABS CONTROL UNIT E

Refer to BRC-11, "TROUBLE DIAGNOSIS" .
OK or NG
OK >> GO TO 2. F
NG >> Repair or replace.

2. CHECK DTC WITH UNIFIED METER AND A/C AMP. G

Refer to DI-4, "COMBINATION METERS" .

H
>> INSPECTION END

EC-241
 DTC P0550 PSP SENSOR

DTC P0550 PSP SENSOR PFP:49763

Component Description EBS011L5

Power steering pressure (PSP) sensor is installed to the power

steering high-pressure tube and detects a power steering load. This
sensor is a potentiometer which transforms the power steering load
into output voltage, and emits the voltage signal to the ECM. The
ECM controls the electric throttle control actuator and adjusts the
throttle valve opening angle to increase the engine speed and
adjusts the idle speed for the increased load.

PBIB1084E

CONSULT-II Reference Value in Data Monitor Mode EBS011L6

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
Steering wheel is in neutral position.
● Engine: After warming up, idle OFF
PW/ST SIGNAL (Forward direction)
the engine
Steering wheel is turned. ON

On Board Diagnosis Logic EBS011L7

The MI will not light up for this diagnosis.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
P0550 Power steering pres- An excessively low or high voltage from the (The sensor circuit is open or shorted)
0550 sure sensor circuit sensor is sent to ECM.
● Power steering pressure sensor

DTC Confirmation Procedure EBS011L8

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-244, "Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-242
 DTC P0550 PSP SENSOR

Wiring Diagram EBS011L9

EC

TBWT0544E

EC-243
 DTC P0550 PSP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
0.5 - 4.5V
Power steering pressure ● Steering wheel is being turned.
12 L/W
sensor [Engine is running]
0.4 - 0.8V
● Steering wheel is not being turned.
Sensor ground
(Mass air flow sensor / IAT [Engine is running]
sensor / ECT sensor /
67 B/W ● Warm-up condition Approximately 0V
Power steering pressure
sensor / ASCD steering ● Idle speed
switch)
Sensor power supply
68 R/W (Power steering pressure [Ignition switch: ON] Approximately 5V
sensor)

Diagnostic Procedure EBS011LA

1. RETIGHTEN GROUND SCREWS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

EC-244
 DTC P0550 PSP SENSOR

2. CHECK PSP SENSOR POWER SUPPLY CIRCUIT A

1. Disconnect PSP sensor harness connector.
2. Turn ignition switch ON.
EC

D
PBIB1084E

3. Check voltage between PSP sensor terminal 1 and ground with E

CONSULT-II or tester.
Voltage: Approximately 5V
F
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors. G

PBIB0188E H

3. CHECK PSP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF. I
2. Disconnect ECM harness connector.
3. Check harness continuity between PSP sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram. J

Continuity should exist.

4. Also check harness for short to ground and short to power. K
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. L

4. CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
M
1. Check harness continuity between ECM terminal 12 and PSP sensor terminal 2.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK PSP SENSOR

Refer to EC-246, "Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace PSP sensor.

EC-245
 DTC P0550 PSP SENSOR

6. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS011LB

POWER STEERING PRESSURE SENSOR

1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.
3. Check voltage between ECM terminal 12 and ground under the
following conditions.

Condition Voltage
Steering wheel is being turned. 0.5 - 4.5V
Steering wheel is not being turned. 0.4 - 0.8V

MBIB0126E

EC-246
 DTC P0605 ECM

DTC P0605 ECM PFP:23710

A
Component Description EBS011LC

The ECM consists of a microcomputer and connectors for signal

input and output and for power supply. The ECM controls the engine. EC

PBIB1164E

E
On Board Diagnosis Logic EBS011LD

This self-diagnosis has one or two trip detection logic.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause F
A) ECM calculation function is malfunctioning.
P0605
Engine control module B) ECM EEP-ROM system is malfunctioning. ● ECM
0605 G
C) ECM self shut-off function is malfunctioning.

FAIL-SAFE MODE H
ECM enters fail-safe mode when the malfunction A is detected.
Detected items Engine operation condition in fail-safe mode
I
● ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5
Malfunction A degrees) by the return spring.
● ECM deactivates ASCD operation.
J
DTC Confirmation Procedure EBS011LE

Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, perform
PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION K
B, perform PROCEDURE FOR MALFUNCTION C.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at L
least 10 seconds before conducting the next test.
PROCEDURE FOR MALFUNCTION A
M
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If 1st trip DTC is detected, go to EC-248, "Diagnostic Procedure"
.

SEF058Y

With GST
Follow the procedure “With CONSULT-II” above.

EC-247
 DTC P0605 ECM

PROCEDURE FOR MALFUNCTION B

With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.
4. If 1st trip DTC is detected, go to EC-248, "Diagnostic Procedure"
.

SEF058Y

With GST
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR MALFUNCTION C
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.
4. Repeat step 3 for 32 times.
5. If 1st trip DTC is detected, go to EC-248, "Diagnostic Procedure"
.

SEF058Y

With GST
Follow the procedure “With CONSULT-II” above.
Diagnostic Procedure EBS011LF

1. INSPECTION START
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure.
See EC-247 .
5. Is the 1st trip DTC P0605 displayed again?
With GST
1. Turn ignition switch ON.
2. Select “MODE 4” with GST.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure.
See EC-247 .
5. Is the 1st trip DTC P0605 displayed again?
Yes or No
Yes >> GO TO 2.
No >> INSPECTION END

EC-248
 DTC P0605 ECM

2. REPLACE ECM A
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to BL-105, "ECM
Re-communicating Function" . EC
3. Perform EC-27, "Accelerator Pedal Released Position Learning" .
4. Perform EC-27, "Throttle Valve Closed Position Learning" .
5. Perform EC-27, "Idle Air Volume Learning" . C

>> INSPECTION END

D

EC-249
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER PFP:22693

Description EBS010GE

SYSTEM DESCRIPTION
Sensor Input Signal to ECM ECM function Actuator
Camshaft position sensor (PHASE) Air fuel ratio (A/F)
Engine speed
Crankshaft position sensor (POS) sensor 1 heater Air fuel ratio (A/F) sensor 1 heater
Mass air flow sensor Amount of intake air control

The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating
condition to keep the temperature of A/F sensor 1 element at the specified range.
CONSULT-II Reference Value in Data Monitor Mode EBS010GF

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
A/F S1 HTR (B1)
● Engine: After warming up, idle the engine 0 - 100%
A/F S1 HTR (B2)

On Board Diagnosis Logic EBS010GG

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1031 The current amperage in the heated air fuel ratio
1031 (A/F) sensor 1 heater circuit is out of the normal ● Harness or connectors
(Bank 1) Air fuel ratio (A/F) sensor (The A/F sensor 1 heater circuit is
range.
1 heater control circuit open or shorted.)
P1051 (An excessively low voltage signal is sent to ECM
low
1051 through the heated air fuel ratio (A/F) sensor 1 ● A/F sensor 1 heater
(Bank 2) heater.)

P1032 The current amperage in the heated air fuel ratio

1032 (A/F) sensor 1 heater circuit is out of the normal ● Harness or connectors
(Bank 1) Air fuel ratio (A/F) sensor (The A/F sensor 1 heater circuit is
range.
1 heater control circuit shorted.)
P1052 (An excessively high voltage signal is sent to ECM
high
1052 through the heated air fuel ratio (A/F) sensor 1 ● A/F sensor 1 heater
(Bank 2) heater.)

DTC Confirmation Procedure EBS010GH

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at
idle.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and let it idle for at least 10 seconds.
3. If 1st trip DTC is detected, go to EC-256, "Diagnostic Procedure"
.

SEF058Y

WITH GST
1. Start engine and let it idle for at least 10 seconds.
2. Turn ignition switch OFF and wait at least 10 seconds.

EC-250
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

3. Start engine and let it idle for at least 10 seconds.

4. Select MODE 3 with GST. A
5. If DTC is detected, go to EC-256, "Diagnostic Procedure" .
● When using GST, DTC Confirmation Procedure should be performed twice as much as when using
CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis. There- EC
fore, using CONSULT-II is recommended.

EC-251
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

Wiring Diagram EBS010GI

BANK 1

TBWT0545E

EC-252
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. A
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
C
Approximately 5V

[Engine is running] D
A/F sensor 1 heater
2 GY/R ● Warm-up condition
(Bank 1)
● Idle speed
E
PBIB1584E

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
F

EC-253
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

BANK 2

TBWT0546E

EC-254
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. A
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
C
Approximately 5V

[Engine is running] D
A/F sensor 1 heater
24 GY ● Warm-up condition
(Bank 1)
● Idle speed
E
PBIB1584E

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
F

EC-255
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

Diagnostic Procedure EBS010GJ

1. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

PBIB1071E

3. Disconnect air fuel ratio (A/F) sensor 1 harness connector.

PBIB1911E

4. Turn ignition switch ON.

5. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

PBIB1683E

2. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

EC-256
 DTC P1031, P1032, P1051, P1052 A/F SENSOR 1 HEATER

3. CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT A

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 2 (bank 1) or 24 (bank 2) and A/F sensor 1 terminal 4. EC
Refer to Wiring Diagram.
Continuity should exist.
C
4. Also check harness for short to ground or short to power.
OK or NG
OK >> GO TO 4. D
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK A/F SENSOR 1 HEATER E

Refer to EC-257, "Component Inspection" .
OK or NG
F
OK >> GO TO 6.
NG >> Replace A/F sensor 1.

5. CHECK INTERMITTENT INCIDENT G

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

OK or NG H
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Component Inspection EBS010GK
I
AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Check resistance between terminals 3 and 4.
J
Resistance: 2.3 - 4.3Ω at 25°C (77°F)
Check continuity between terminals 3 and 1, 2, 5, 6, terminals 4 and
1, 2, 5, 6. K
Continuity should not exist.
If NG, replace the A/F sensor 1.
L
CAUTION:
● Discard any A/F sensor which has been dropped from a
height of more than 0.5 m (19.7 in) onto a hard surface such
as a concrete floor; use a new one. M
● Before installing new A/F sensor, clean exhaust system
threads using Heated Oxygen Sensor Thread Cleaner tool
J-43897-18 or J-43897-12 and approved anti-seize lubricant.

PBIB1684E

Removal and Installation EBS010GL

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-257
 DTC P1065 ECM POWER SUPPLY

DTC P1065 ECM POWER SUPPLY PFP:23710

Component Description EBS011LG

Battery voltage is supplied to the ECM even when the ignition switch
is turned OFF for the ECM memory function of the DTC memory, the
air-fuel ratio feedback compensation value memory, the idle air vol-
ume learning value memory, etc.

PBIB1164E

On Board Diagnosis Logic EBS011LH

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
P1065 ECM power supply cir- ECM back-up RAM system does not function [ECM power supply (back-up) circuit is
1065 cuit properly. open or shorted.]
● ECM

DTC Confirmation Procedure EBS011LI

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.
5. Repeat steps 3 and 4 for 4 times.
6. If 1st trip DTC is detected, go to EC-260, "Diagnostic Procedure"
.

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-258
 DTC P1065 ECM POWER SUPPLY

Wiring Diagram EBS011LJ

EC

TBWT0547E

EC-259
 DTC P1065 ECM POWER SUPPLY

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Power supply for ECM BATTERY VOLTAGE
121 R/W [Ignition switch: OFF]
(Back-up) (11 - 14V)

Diagnostic Procedure EBS011LK

1. CHECK ECM POWER SUPPLY

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check voltage between ECM terminal 121 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

MBIB0026E

2. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E108, M15
● Harness connectors M72, F102
● 15A fuse
● Harness for open or short between ECM and battery

>> Repair or replace harness or connectors.

3. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness or connectors.

EC-260
 DTC P1065 ECM POWER SUPPLY

4. PERFORM DTC CONFIRMATION PROCEDURE A

With CONSULT-II
1. Turn ignition switch ON.
EC
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure.
C
See EC-258 .
5. Is the 1st trip DTC P1065 displayed again?
With GST D
1. Turn ignition switch ON.
2. Select “MODE 4” with GST.
3. Touch “ERASE”. E
4. Perform DTC Confirmation Procedure.
See EC-258 .
5. Is the 1st trip DTC P1065 displayed again? F
Yes or No
Yes >> GO TO 5.
No >> INSPECTION END G

5. REPLACE ECM
H
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to BL-105, "ECM
Re-communicating Function" .
I
3. Perform EC-27, "Accelerator Pedal Released Position Learning" .
4. Perform EC-27, "Throttle Valve Closed Position Learning" .
5. Perform EC-27, "Idle Air Volume Learning" . J

>> INSPECTION END

K

EC-261
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

DTC P1111, P1136 IVT CONTROL SOLENOID VALVE PFP:23796

Component Description EBS011LL

Intake valve timing control solenoid valve is activated by ON/OFF

pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
PBIB1842E

CONSULT-II Reference Value in Data Monitor Mode EBS011LM

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
● Engine: After warming up Idle 0% - 2%
INT/V SOL (B1) ● Shift lever: Neutral
INT/V SOL (B2) When revving engine up to 2,000 rpm
● Air conditioner switch: OFF Approx. 0% - 50%
quickly
● No-load

On Board Diagnosis Logic EBS011LN

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1111
1111 ● Harness or connectors
(Bank 1) An improper voltage is sent to the ECM (Intake valve timing control solenoid valve
Intake valve timing control
through intake valve timing control solenoid circuit is open or shorted.)
P1136 solenoid valve circuit
valve.
1136 ● Intake valve timing control solenoid valve
(Bank 2)

DTC Confirmation Procedure EBS011LO

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If 1st trip DTC is detected, go to EC-270, "Diagnostic Procedure"
.

SEF058Y

WITH GST
Following the procedure “WITH CONSULT-II” above.

EC-262
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

Wiring Diagram (LHD Models) EBS011LP

BANK 1 A

EC

TBWT0548E

EC-263
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
BATTERY VOLTAGE
● Warm-up condition
(11 - 14V)
● Idle speed

7 - 12V
Intake valve timing control
11 P [Engine is running]
solenoid valve (bank 1)
● Warm-up condition
● When revving engine up to 2,500 rpm
quickly

PBIB1790E

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-264
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

BANK 2
A

EC

TBWT0550E

EC-265
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
BATTERY VOLTAGE
● Warm-up condition
(11 - 14V)
● Idle speed

7 - 12V
Intake valve timing control
10 W/G [Engine is running]
solenoid valve (bank 2)
● Warm-up condition
● When revving engine up to 2,500 rpm
quickly

PBIB1790E

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-266
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

Wiring Diagram (RHD Models) EBS011PQ

BANK 1 A

EC

TBWT0549E

EC-267
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
BATTERY VOLTAGE
● Warm-up condition
(11 - 14V)
● Idle speed

7 - 12V
Intake valve timing control
11 P [Engine is running]
solenoid valve (bank 1)
● Warm-up condition
● When revving engine up to 2,500 rpm
quickly

PBIB1790E

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-268
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

BANK 2
A

EC

TBWT0551E

EC-269
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
BATTERY VOLTAGE
● Warm-up condition
(11 - 14V)
● Idle speed

7 - 12V
Intake valve timing control
10 W/G [Engine is running]
solenoid valve (bank 2)
● Warm-up condition
● When revving engine up to 2,500 rpm
quickly

PBIB1790E

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure EBS011LQ

1. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake valve timing control solenoid valve harness connector.

PBIB1073E

3. Turn ignition switch ON.

4. Check voltage between intake valve timing control solenoid
valve terminal 2 and ground with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

PBIB0192E

EC-270
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

2. DETECT MALFUNCTIONING PART A

Check the following.
● Harness connectors E12, F3
● Harness connectors F18, F201 EC
● IPDM E/R harness connector E7
● Harness for open or short between intake valve timing control solenoid valve and IPDM E/R
C

>> Repair harness or connectors.

3. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR D
OPEN AND SHORT
1. Turn ignition switch OFF. E
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 11 (bank 1) or 10 (bank 2) and intake valve timing con-
trol solenoid valve terminal 1. Refer to Wiring Diagram. F
Continuity should exist.
4. Also check harness for short to ground and short to power. G
OK or NG
OK >> GO TO 5.
NG >> GO TO 4. H

4. DETECT MALFUNCTIONING PART

Check the following. I
● Harness connectors F18, F201
● Harness for open and short between ECM and intake valve timing control solenoid valve
J

>> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE K

Refer to EC-272, "Component Inspection" .

OK or NG L
OK >> GO TO 6.
NG >> Replace intake valve timing control solenoid valve.
M
6. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-271
 DTC P1111, P1136 IVT CONTROL SOLENOID VALVE

Component Inspection EBS011LR

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

1. Disconnect intake valve timing control solenoid valve harness connector.
2. Check resistance between intake valve timing control solenoid
valve terminals as follows.
Terminals Resistance
1 and 2 7.0 - 7.5Ω at 20°C (68°F)
∞Ω
1 or 2 and ground
(Continuity should not exist)

PBIB0193E

Removal and Installation EBS011LS

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to EM-54, "TIMING CHAIN" .

EC-272
 DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR

DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR PFP:16119

A
Component Description EBS011LT

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve. EC
The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throt-
tle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle
valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening
angle properly in response to driving condition. C

On Board Diagnosis Logic EBS011LU

These self-diagnoses have the one trip detection logic. D

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
Electric throttle control actuator does not func- E
A) tion properly due to the return spring malfunc-
tion.
P1121 Electric throttle control
● Electric throttle control actuator
1121 actuator Throttle valve opening angle in fail-safe mode is
B) F
not in specified range.
C) ECM detects the throttle valve is stuck open.

G
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
Detected items Engine operating condition in fail-safe mode H
ECM controls the electric throttle actuator by regulating the throttle opening around the idle position. The
Malfunction A
engine speed will not rise more than 2,000 rpm.
Malfunction B ECM controls the electric throttle control actuator by regulating the throttle opening to 20 degrees or less. I
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the engine stalls.
Malfunction C
The engine can restart in N or P position, and engine speed will not exceed 1,000 rpm or more.
J
DTC Confirmation Procedure EBS011LV

NOTE:
● Perform PROCEDURE FOR MALFUNCTION A AND B first. If the DTC cannot be confirmed, perform K
PROCEDURE FOR MALFUNCTION C.
● If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test. L
PROCEDURE FOR MALFUNCTION A AND B
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second. M
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Shift selector lever to 1st position and wait at least 2 seconds.
4. Shift selector lever to Neutral position.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Turn ignition switch ON and wait at least 1 second.
7. Shift selector lever to 1st position and wait at least 2 seconds.
8. Shift selector lever to Neutral position.
9. Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.
SEF058Y
10. If DTC is detected, go to EC-274, "Diagnostic Procedure" .
With GST
Follow the procedure “With CONSULT-II” above.

EC-273
 DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR

PROCEDURE FOR MALFUNCTION C

With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Shift selector lever to 1st position and wait at least 2 seconds.
4. Shift selector lever to Neutral position.
5. Start engine and let it idle for 3 seconds.
6. If DTC is detected, go to EC-274, "Diagnostic Procedure" .

SEF058Y

With GST
Follow the procedure “With CONSULT-II” above.
Diagnostic Procedure EBS011LW

1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Remove the intake air duct.
2. Check if a foreign matter is caught between the throttle valve
and the housing.
OK or NG
OK >> GO TO 2.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside.

PBIB1093E

2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

EC-274
 DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION PFP:16119

A
Description EBS011LX

NOTE:
If DTC P1122 is displayed with DTC P1121 or 1126, first perform the trouble diagnosis for DTC P1121 or EC
P1126. Refer to EC-273 or EC-282 .
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed- C
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
D
On Board Diagnosis Logic EBS011LY

This self-diagnosis has the one trip detection logic.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
E

● Harness or connectors
P1122 Electric throttle control Electric throttle control function does not oper- (Throttle control motor circuit is open or
1122 performance problem ate properly. shorted) F
● Electric throttle control actuator

FAIL-SAFE MODE G
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
Engine operating condition in fail-safe mode
H
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.

DTC Confirmation Procedure EBS011LZ I

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test. J
WITH CONSULT-II
1. Turn ignition switch ON and wait at least 2 seconds.
K
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If DTC is detected, go to EC-277, "Diagnostic Procedure" . L

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-275
 DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

Wiring Diagram EBS011M0

TBWT0552E

EC-276
 DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. A
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
C
Throttle control motor relay BATTERY VOLTAGE
3 G [Ignition switch: ON]
power supply (11 - 14V)

0 - 14V D
[Ignition switch: ON]
Throttle control motor ● Engine stopped
4 L/B E
(Close) ● Shift lever: 1st
● Accelerator pedal is released

PBIB1104E F
0 - 14V

[Ignition switch: ON]

G
Throttle control motor ● Engine stopped
5 L/Y
(Open) ● Shift lever: 1st
● Accelerator pedal is fully depressed H
PBIB1105E

BATTERY VOLTAGE
104 SB Throttle control motor relay [Ignition switch: OFF] I
(11 - 14V)
[Ignition switch: ON] 0 - 1.0V

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) J
Diagnostic Procedure EBS011M1

1. RETIGHTEN GROUND SCREWS K

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.
L

>> GO TO 2.
M

PBIB1071E

EC-277
 DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

2. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

1. Check voltage between ECM terminal 3 and ground under the
following conditions with CONSULT-II or tester.
Ignition switch Voltage
OFF Approximately 0V
Battery voltage
ON
(11 - 14V)
OK or NG
OK >> GO TO 10.
NG >> GO TO 3. MBIB0028E

3. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector E8.
4. Check continuity between ECM terminal 3 and IPDM E/R terminal 42.
Refer to Wiring Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.

4. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● Harness for open or short between ECM and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I

1. Reconnect all harness connectors disconnected.
2. Check voltage between ECM terminal 104 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.

PBIB1171E

EC-278
 DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

6. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II A

1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E9.
3. Check continuity between ECM terminal 104 and IPDM E/R terminal 47. EC
Refer to Wiring Diagram.
Continuity should exist.
C
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8. D
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART E

Check the following.
● Harness connectors E108, M15
F
● Harness connectors M72, F102
● Harness for open or short between ECM and IPDM E/R
G
>> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK FUSE H
1. Disconnect 15A fuse.
2. Check 15A fuse for blown.
OK or NG I
OK >> GO TO 9.
NG >> Replace 15A fuse.
J
9. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . K
OK or NG
OK >> Replace IPDM E/R. Refer to PG-27, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" . L
NG >> Repair or replace harness or connectors.

EC-279
 DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

10. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
Electric throttle control
ECM terminal Continuity
actuator terminal
5 Should not exist
3
4 Should exist
5 Should exist PBIB1079E
6
4 Should not exist
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> Repair or replace.

11. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve and
the housing.
OK or NG
OK >> GO TO 12.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside.

PBIB1093E

12. CHECK THROTTLE CONTROL MOTOR

Refer to EC-281, "Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> GO TO 14.

13. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 14.
NG >> Repair or replace harness or connectors.

14. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

EC-280
 DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

Component Inspection EBS011M2

THROTTLE CONTROL MOTOR A

1. Disconnect electric throttle control actuator harness connector.
2. Check resistance between terminals 3 and 6.
EC
Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)]
3. If NG, replace electric throttle control actuator and go to next
step. C
4. Perform EC-27, "Throttle Valve Closed Position Learning" .
5. Perform EC-27, "Idle Air Volume Learning" .
D

PBIB0095E
E
Remove and Installation EBS011M3

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" . F

EC-281
 DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY PFP:16119

Component Description EBS011M4

Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends
an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition
switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not
provided to the ECM.
CONSULT-II Reference Value in Data Monitor Mode EBS011M5

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
THRTL RELAY ● Ignition switch: ON ON

On Board Diagnosis Logic EBS011M6

These self-diagnoses have the one trip detection logic.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
P1124 Throttle control motor ECM detect the throttle control motor relay is (Throttle control motor relay circuit is
1124 relay circuit short stuck ON. shorted)
● Throttle control motor relay
● Harness or connectors
P1126 Throttle control motor ECM detects a voltage of power source for (Throttle control motor relay circuit is
1126 relay circuit open throttle control motor is excessively low. open)
● Throttle control motor relay

FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.

DTC Confirmation Procedure EBS011M7

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR DTC P1124
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If DTC is detected, go to EC-285, "Diagnostic Procedure" .

SEF058Y

EC-282
 DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

With GST
Follow the procedure “With CONSULT-II” above. A

PROCEDURE FOR DTC P1126

With CONSULT-II EC
1. Turn ignition switch ON and wait at least 2 seconds.
2. Select “DATA MONITOR””mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds. C
4. If DTC is detected, go to EC-285, "Diagnostic Procedure" .

SEF058Y

With GST F
Follow the procedure “With CONSULT-II” above.

EC-283
 DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

Wiring Diagram EBS011M8

TBWT0553E

EC-284
 DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Throttle control motor relay BATTERY VOLTAGE C
3 G [Ignition switch: ON]
power supply (11 - 14V)
BATTERY VOLTAGE
[Ignition switch: OFF]
104 SB Throttle control motor relay (11 - 14V)
D
[Ignition switch: ON] 0 - 1.0V

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
E
Diagnostic Procedure EBS011M9

1. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I

F
1. Turn ignition switch OFF.
2. Check voltage between ECM terminal 104 and ground with
CONSULT-II or tester.
G
Voltage: Battery voltage
OK or NG
H
OK >> GO TO 5.
NG >> GO TO 2.

PBIB1171E

J
2. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E9. K
3. Check continuity between ECM terminal 104 and IPDM E/R terminal 47.
Refer to Wiring Diagram.
L
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG M
OK >> GO TO 4.
NG >> GO TO 3.

3. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E108, M15
● Harness connectors M72, F102
● Harness for open or short between ECM and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

EC-285
 DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

4. CHECK FUSE
1. Disconnect 15A fuse.
2. Check 15A fuse for blown.
OK or NG
OK >> GO TO 8.
NG >> Replace 15A fuse.

5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

Check voltage between ECM terminal 3 and ground under the fol-
lowing conditions with CONSULT-II or tester.
Ignition switch Voltage
OFF Approximately 0V
Battery voltage
ON
(11 - 14V)
OK or NG
OK >> GO TO 8.
NG >> GO TO 6. MBIB0028E

6. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector E8.
4. Check continuity between ECM terminal 3 and IPDM E/R terminal 42.
Refer to Wiring Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● Harness for open or short between ECM and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-27, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connectors.

EC-286
 DTC P1128 THROTTLE CONTROL MOTOR

DTC P1128 THROTTLE CONTROL MOTOR PFP:16119

A
Component Description EBS011MA

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed- EC
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
On Board Diagnosis Logic EBS011MB C
This self-diagnosis has the one trip detection logic.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause D
● Harness or connectors
P1128 Throttle control motor ECM detects short in both circuits between (Throttle control motor circuit is shorted.)
1128 circuit short ECM and throttle control motor. ● Electric throttle control actuator E
(Throttle control motor)

FAIL-SAFE MODE F
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return G
spring.

DTC Confirmation Procedure EBS011MC

H
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test. I
WITH CONSULT-II
1. Turn ignition switch ON and wait at least 2 seconds.
2. Select “DATA MONITOR” mode with CONSULT-II. J
3. Start engine and let it idle for 5 seconds.
4. If DTC is detected, go to EC-289, "Diagnostic Procedure" .
K

SEF058Y
M

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-287
 DTC P1128 THROTTLE CONTROL MOTOR

Wiring Diagram EBS011MD

TBWT0554E

EC-288
 DTC P1128 THROTTLE CONTROL MOTOR

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II. A
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground. EC
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
C
0 - 14V

[Ignition switch: ON]

● Engine stopped D
Throttle control motor
4 L/B
(Close) ● Shift lever: 1st
● Accelerator pedal is released
E
PBIB1104E

0 - 14V
F
[Ignition switch: ON]
Throttle control motor ● Engine stopped
5 L/Y
(Open) ● Shift lever: 1st G
● Accelerator pedal is fully depressed

PBIB1105E
H
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure EBS011ME

I
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. J

>> GO TO 2.
K

PBIB1071E
M

EC-289
 DTC P1128 THROTTLE CONTROL MOTOR

2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
Electric throttle control
ECM terminal Continuity
actuator terminal
5 Should not exist
3
4 Should exist
5 Should exist PBIB1079E
6
4 Should not exist
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.

3. CHECK THROTTLE CONTROL MOTOR

Refer to EC-290, "Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.

4. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness or connectors.

5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

Component Inspection EBS011MF

THROTTLE CONTROL MOTOR

1. Disconnect electric throttle control actuator harness connector.
2. Check resistance between terminals 3 and 6.
Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)]
3. If NG, replace electric throttle control actuator and go to next
step.
4. Perform EC-27, "Throttle Valve Closed Position Learning" .
5. Perform EC-27, "Idle Air Volume Learning" .

PBIB0095E

EC-290
 DTC P1128 THROTTLE CONTROL MOTOR

Removal and Installation EBS011MG

ELECTRIC THROTTLE CONTROL ACTUATOR A

Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" .

EC

EC-291
 DTC P1146, P1166 HO2S2

DTC P1146, P1166 HO2S2 PFP:226A0

Component Description EBS011MH

The heated oxygen sensor 2, after three way catalyst 1, monitors the
oxygen level in the exhaust gas on each bank.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.
SEF327R

CONSULT-II Reference Value in Data Monitor Mode EBS011MI

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
HO2S2 (B1) ● Warm-up condition 0 - 0.3V ←→ Approx. 0.6 -
HO2S2 (B2) ● After keeping engine speed 1.0V
Revving engine from idle to 3,000 rpm
between 3,500 and 4,000 rpm for quickly.
HO2S2 MNTR (B1)
1 minute and at idle for 1 minute LEAN ←→ RICH
HO2S2 MNTR (B2)
under no load.

On Board Diagnosis Logic EBS011MJ

The heated oxygen sensor 2 has a much longer switching time

between rich and lean than the air fuel ratio (A/F) sensor 1. The oxy-
gen storage capacity of the three way catalyst causes the longer
switching time. To judge the malfunctions of heated oxygen sensor
2, ECM monitors whether the minimum voltage of sensor is suffi-
ciently low during the various driving condition such as fuel-cut.

SEF558Z

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1146 ● Harness or connectors
1146 (The sensor circuit is open or shorted)
(Bank 1) Heated oxygen sensor
The minimum voltage from the sensor is not ● Heated oxygen sensor 2
2 minimum voltage
P1166 reached to the specified voltage.
monitoring ● Fuel pressure
1166
(Bank 2) ● Injectors

EC-292
 DTC P1146, P1166 HO2S2

DTC Confirmation Procedure EBS011PR

A
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
● “COMPLETED” will appear on CONSULT-II screen when all tests “COND1”, “COND2” and EC
“COND3” are completed.
● If DTC confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test. C
TESTING CONDITION:
Never stop engine during this procedure. If the engine is stopped, retry procedure from step 2 in Pro-
cedure for COND1. D
WITH CONSULT-II
Procedure for COND1
E
For the best results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30°C (32 to 86°F).
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. F
3. Start engine and keep the engine speed at between 3,500 to 4,000 rpm for at least 1 minute under no
load.
4. Let engine idle for 1 minute. G
5. Select “HO2S2 (B1) P1146” or “HO2S2 (B2) P1166” of “HO2S2” in “DTC WORK SUPPORT” mode with
CONSULT-II.
6. Touch “START”. H
7. Let engine idle for at least 30 seconds.
8. Rev engine up to 2,000 rpm 2 or 3 times quickly under no load.
If “COMPLETED” appears on CONSULT-II screen, go to step 2 in Procedure for COND3. I
If “COMPLETED” does not appear on CONSULT-II screen, go to the following step.
9. When the following conditions are met, “TESTING” will be displayed at “COND1” on the CONSULT-II
screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take J
approximately 60 seconds.)
ENG SPEED More than 1,000 rpm
B/FUEL SCHDL More than 1.0 msec
K

COOLANT TEMP/S 70 - 105°C

Selector lever Suitable position L

PBIB0555E

NOTE:
● If “TESTING” is not displayed after 5 minutes, retry from step 2 in Procedure for COND1.

● If “COMPLETED” already appears at “COND2” on CONSULT-II screen before Procedure for

COND2 is conducted, it is unnecessary to conduct step 1 in Procedure for COND2.

EC-293
 DTC P1146, P1166 HO2S2

Procedure for COND2

1. While driving, release accelerator pedal completed from the
above condition [step 9] until “INCOMPLETE” at “COND2” on
CONSULT-II screen has turned to “COMPLETED” (It will take
approximately 4 seconds.)
NOTE:
If “COMPLETE” already appears at “COND3” on CONSULT-
II screen before Procedure for COND3 is conducted, it is
unnecessary to conduct step 1 in Procedure for COND3.

PBIB0556E

Procedure for COND3

1. Stop vehicle and let it idle until “INCOMPLETE” of “COND3” on
CONSULT-II screen has turned to “COMPLETED”. (It will take a
maximum of approximately 6 minutes.)
2. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”.
If “NG” is displayed, refer to EC-298, "Diagnostic Procedure" .
If “CAN NOT BE DIAGNOSED” is displayed, perform the follow-
ing.
a. Turn ignition switch OFF and leave the vehicle in a cool place
(soak the vehicle).
b. Turn ignition switch ON and select “COOLANTEMP/S” in “DATA SEC775C

MONITOR” mode with CONSULT-II

c. Start engine and warm it up while monitoring “COOLANTEMP/S” indication on CONSULT-II.
d. When “COOLANTEMP/S” indication reaches to 70°C (158°F), go to step 3 in Procedure for COND 1.
Overall Function Check EBS011ML

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a
DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
engine ground.
6. Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be below 0.18V at least once during this
procedure.
If the voltage can be confirmed in step 6, step 7 is not nec-
essary.
7. Keep vehicle at idling for 10 minutes, then check the voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in 4th
gear.
The voltage should be below 0.18V at least once during this PBIB1607E
procedure.
8. If NG, go to EC-298, "Diagnostic Procedure" .

EC-294
 DTC P1146, P1166 HO2S2

Wiring Diagram EBS011MM

BANK 1 A

EC

TBWT0533E

EC-295
 DTC P1146, P1166 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are
74 OR 0 - Approximately 1.0V
(bank 1) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor)
● Idle speed

EC-296
 DTC P1146, P1166 HO2S2

BANK 2
A

EC

TBWT0534E

EC-297
 DTC P1146, P1166 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are
55 L/B 0 - Approximately 1.0V
(bank 2) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor)
● Idle speed

Diagnostic Procedure EBS011MN

1. RETIGHTEN GROUND SCREWS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

EC-298
 DTC P1146, P1166 HO2S2

2. CLEAR THE SELF-LEARNING DATA A

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
EC
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode
with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
C
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0172 or P0175 detected?
Is it difficult to start engine?
D

E
SEF968Y

Without CONSULT-II
1. Start engine and warm it up to normal operating temperature. F
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness connector, and restart
G
and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness con-
nector.
H
5. Make sure DTC P0102 is displayed.
6. Erase the DTC memory. Refer to EC-43, "HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
I
7. Make sure DTC P0000 is displayed.
8. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0172 or P0175 detected? PBIB1077E
J
Is it difficult to start engine?
Yes or No
Yes >> Perform trouble diagnosis for DTC P0172, P0175. Refer to EC-189 .
K
No >> GO TO 3.

EC-299
 DTC P1146, P1166 HO2S2

3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 2 harness connector.

PBIB1908E

4. Check harness continuity between HO2S2 terminal 4 and ECM terminal 78.
Refer to Wiring Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
Terminals
DTC Bank
ECM Sensor
P1146 74 1 1
P1166 55 1 2

Continuity should exist.

2. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Terminals
DTC Bank
ECM Sensor
P1146 74 1 1
P1166 55 1 2

Continuity should not exist.

3. Also check harness for short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

EC-300
 DTC P1146, P1166 HO2S2

5. CHECK HEATED OXYGEN SENSOR 2 A

Refer to EC-301, "Component Inspection" .
OK or NG
OK >> GO TO 6. EC
NG >> Replace malfunctioning heated oxygen sensor 2.

6. CHECK INTERMITTENT INCIDENT C

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
D
>> INSPECTION END
Component Inspection EBS011PS

HEATED OXYGEN SENSOR 2 E

With CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II. F
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds. G
4. Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute. H

SEF174Y
I
6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II.
J

L
PBIB1672E

7. Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ±25%. M

PBIB1920E

“HO2S2 (B1)/(B2)” should be above 0.73V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is −25%.
CAUTION:
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.

EC-301
 DTC P1146, P1166 HO2S2

● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Without CONSULT-II
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
engine ground.
6. Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.73V at least once during this
procedure.
If the voltage is above 0.73V at step 6, step 7 is not neces-
sary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in 5th
gear position.
The voltage should be below 0.18V at least once during this PBIB1607E
procedure.
8. If NG, replace heated oxygen sensor 2.
CAUTION:
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation EBS011MP

HEATED OXYGEN SENSOR 2

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-302
 DTC P1147, P1167 HO2S2

DTC P1147, P1167 HO2S2 PFP:226A0

A
Component Description EBS011MQ

The heated oxygen sensor 2, after three way catalyst 1, monitors the
oxygen level in the exhaust gas on each bank. EC
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt- C
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for D
engine control operation.
SEF327R

E
CONSULT-II Reference Value in Data Monitor Mode EBS011MR

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION F
HO2S2 (B1) ● Warm-up condition 0 - 0.3V ←→ Approx. 0.6 -
HO2S2 (B2) ● After keeping engine speed 1.0V
Revving engine from idle to 3,000 rpm
between 3,500 and 4,000 rpm for quickly.
G
HO2S2 MNTR (B1)
1 minute and at idle for 1 minute LEAN ←→ RICH
HO2S2 MNTR (B2)
under no load.
H
On Board Diagnosis Logic EBS011MS

The heated oxygen sensor 2 has a much longer switching time

between rich and lean than the air fuel ratio (A/F) sensor 1. The oxy-
I
gen storage capacity before the three way catalyst causes the longer
switching time. To judge the malfunctions of heated oxygen sensor
2, ECM monitors whether the maximum voltage of the sensor is suf-
ficiently high during the various driving condition such as fuel-cut. J

PBIB1921E

L
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1147 ● Harness or connectors
M
1147 (The sensor circuit is open or shorted)
(Bank 1) Heated oxygen sensor ● Heated oxygen sensor 2
The maximum voltage from the sensor is not
2 maximum voltage
P1167 reached to the specified voltage. ● Fuel pressure
monitoring
1167 ● Injectors
(Bank 2)
● Intake air leaks

EC-303
 DTC P1147, P1167 HO2S2

DTC Confirmation Procedure EBS011PT

CAUTION:
Always drive vehicle at a safe speed.
NOTE:
● “COMPLETED” will appear on CONSULT-II screen when all tests “COND1”, “COND2” and
“COND3” are completed.
● If DTC confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
TESTING CONDITION:
Never stop engine during this procedure. If the engine is stopped, retry procedure from step 2 in Pro-
cedure for COND1.
WITH CONSULT-II
Procedure for COND1
For the best results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30°C (32 to 86°F).
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed at between 3,500 to 4,000 rpm for at least 1 minute under no
load.
4. Let engine idle for 1 minute.
5. Select “HO2S2 (B1) P1147” or “HO2S2 (B2) P1167” of “HO2S2” in “DTC WORK SUPPORT” mode with
CONSULT-II.
6. Touch “START”.
7. Let engine idle for at least 30 seconds.
8. Rev engine up to 2,000 rpm 2 or 3 times quickly under no load.
If “COMPLETED” appears on CONSULT-II screen, go to step 2 in Procedure for COND3.
If “COMPLETED” does not appear on CONSULT-II screen, go to the following step.
9. When the following conditions are met, “TESTING” will be displayed at “COND1” on the CONSULT-II
screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take
approximately 60 seconds.)
ENG SPEED More than 1,000 rpm
B/FUEL SCHDL More than 1.0 msec
COOLANT TEMP/S 70 - 105°C
Selector lever Suitable position

PBIB0557E

NOTE:
● If “TESTING” is not displayed after 5 minutes, retry from step 2 in Procedure for COND1.

● If “COMPLETED” already appears at “COND2” on CONSULT-II screen before Procedure for

COND2 is conducted, it is unnecessary to conduct step 1 in Procedure for COND2.

EC-304
 DTC P1147, P1167 HO2S2

Procedure for COND2

1. While driving, release accelerator pedal completed from the A
above condition [step 9] until “INCOMPLETE” at “COND2” on
CONSULT-II screen has turned to “COMPLETED” (It will take
approximately 4 seconds.) EC
NOTE:
If “COMPLETE” already appears at “COND3” on CONSULT-
II screen before Procedure for COND3 is conducted, it is
C
unnecessary to conduct step 1 in Procedure for COND3.

PBIB0558E
D

Procedure for COND3

1. Stop vehicle and let it idle until “INCOMPLETE” of “COND3” on
E
CONSULT-II screen has turned to “COMPLETED”. (It will take a
maximum of approximately 6 minutes.)
2. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”. F
If “NG” is displayed, refer to EC-309, "Diagnostic Procedure" .
If “CAN NOT BE DIAGNOSED” is displayed, perform the follow-
ing. G
a. Turn ignition switch OFF and leave the vehicle in a cool place
(soak the vehicle).
b. Turn ignition switch ON and select “COOLANTEMP/S” in “DATA SEC778C
H
MONITOR” mode with CONSULT-II
c. Start engine and warm it up while monitoring “COOLANTEMP/S” indication on CONSULT-II.
d. When “COOLANTEMP/S” indication reaches to 70°C (158°F), go to step 3 in Procedure for COND 1. I
Overall Function Check EBS011MU

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a J
DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to the normal operating temperature. K
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute. L
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
engine ground.
6. Check the voltage when revving up to 4,000 rpm under no load M
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.73V at least once during this
procedure.
If the voltage can be confirmed in step 6, step 7 is not nec-
essary.
7. Keep vehicle at idling for 10 minutes, then check the voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in 4th
gear position.
The voltage should be above 0.73V at least once during this PBIB1607E
procedure.
8. If NG, go to EC-309, "Diagnostic Procedure" .

EC-305
 DTC P1147, P1167 HO2S2

Wiring Diagram EBS011MV

BANK 1

TBWT0533E

EC-306
 DTC P1147, P1167 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are D
74 OR 0 - Approximately 1.0V
(bank 1) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
E

[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor) F
● Idle speed

EC-307
 DTC P1147, P1167 HO2S2

BANK 2

TBWT0534E

EC-308
 DTC P1147, P1167 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running] C
● Warm-up condition
● Revving engine from idle to 3,000 rpm
Heated oxygen sensor 2 quickly after the following conditions are D
55 L/B 0 - Approximately 1.0V
(bank 2) met.
– After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
E

[Engine is running]
Sensor ground
78 B/Y ● Warm-up condition Approximately 0V
(Heated oxygen sensor) F
● Idle speed

Diagnostic Procedure EBS011MW

1. RETIGHTEN GROUND SCREWS G

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. H

>> GO TO 2.
I

PBIB1071E
K

EC-309
 DTC P1147, P1167 HO2S2

2. CLEAR THE SELF-LEARNING DATA

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode
with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0174 detected?
Is it difficult to start engine?

SEF968Y

Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness connector, and restart
and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness con-
nector.
5. Make sure DTC P0102 is displayed.
6. Erase the DTC memory. Refer to EC-43, "HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
7. Make sure DTC P0000 is displayed.
8. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0174 detected? PBIB1077E
Is it difficult to start engine?
Yes or No
Yes >> Perform trouble diagnosis for DTC P0171or P0174. Refer to EC-180 .
No >> GO TO 3.

EC-310
 DTC P1147, P1167 HO2S2

3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT A

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 2 harness connector. EC

E
PBIB1908E

4. Check harness continuity between HO2S2 terminal 4 and ECM terminal 78.
Refer to Wiring Diagram. F

Continuity should exist.

5. Also check harness for short to ground and short to power. G
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. H

4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

I
1. Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
Terminals J
DTC Bank
ECM Sensor
P1147 74 1 1
K
P1167 55 1 2

Continuity should exist.

L
2. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Terminals M
DTC Bank
ECM Sensor
P1147 74 1 1
P1167 55 1 2

Continuity should not exist.

3. Also check harness for short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

EC-311
 DTC P1147, P1167 HO2S2

5. CHECK HEATED OXYGEN SENSOR 2

Refer to EC-312, "Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace malfunctioning heated oxygen sensor 2.

6. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS011PU

HEATED OXYGEN SENSOR 2

With CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.

SEF174Y

6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select

“HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II.

PBIB1672E

7. Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to ±25%.

PBIB1920E

“HO2S2 (B1)/(B2)” should be above 0.73V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is −25%.
CAUTION:
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.

EC-312
 DTC P1147, P1167 HO2S2

● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. A
Without CONSULT-II
1. Start engine and warm it up to the normal operating temperature.
EC
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
C
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
engine ground.
6. Check the voltage when revving up to 4,000 rpm under no load D
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.73V at least once during this
procedure. E
If the voltage is above 0.73V at step 6, step 7 is not neces-
sary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or F
check the voltage when coasting from 80 km/h (50 MPH) in 5th
gear position.
The voltage should be below 0.18V at least once during this PBIB1607E
G
procedure.
8. If NG, replace heated oxygen sensor 2.
CAUTION: H
● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant. I

Removal and Installation EBS011MY

HEATED OXYGEN SENSOR 2 J

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-313
 DTC P1211 TCS CONTROL UNIT

DTC P1211 TCS CONTROL UNIT PFP:47850

Description EBS011MZ

The malfunction information related to TCS is transferred through the CAN communication line from ESP/
TCS/ABS control unit to ECM.
Be sure to erase the malfunction information such as DTC not only for ESP/TCS/ABS control unit but
also for ECM after TCS related repair.
On Board Diagnosis Logic EBS011N0

Freeze frame data is not stored in the ECM for this self-diagnosis. The MI will not light up for this self-
diagnosis.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause

P1211 ECM receives a malfunction information from ● ESP/TCS/ABS control unit

TCS control unit
1211 ESP/TCS/ABS control unit. ● TCS related parts

DTC Confirmation Procedure EBS011N1

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 60 seconds.
4. If 1st trip DTC is detected, go to EC-314, "Diagnostic Procedure"
.

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic Procedure EBS011N2

Go to BRC-11, "TROUBLE DIAGNOSIS"

EC-314
 DTC P1212 TCS COMMUNICATION LINE

DTC P1212 TCS COMMUNICATION LINE PFP:47850

A
Description EBS011N3

NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, EC
U1001. Refer to EC-121, "DTC U1000, U1001 CAN COMMUNICATION LINE" .
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and ESP/TCS/ABS control unit.
Be sure to erase the malfunction information such as DTC not only for ESP/TCS/ABS control unit but C
also for ECM after TCS related repair.
On Board Diagnosis Logic EBS011N4
D
Freeze frame data is not stored in the ECM for this self-diagnosis. The MI will not light up for this self-
diagnosis.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
E

● Harness or connectors
ECM can not receive the information (The CAN communication line is open or
P1212 TCS communication
from ESP/TCS/ABS control unit continu- shorted.) F
1212 line
ously. ● ESP/TCS/ABS control unit
● Dead (Weak) battery
G
DTC Confirmation Procedure EBS011N5

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle. H
WITH CONSULT-II
1. Turn ignition switch ON.
I
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 10 seconds.
4. If a 1st trip DTC is detected, go to EC-315, "Diagnostic Proce- J
dure" .

L
SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above. M

Diagnostic Procedure EBS011N6

1. CHECK ESP/TCS/ABS CONTROL UNIT FUNCTION

Refer to BRC-11, "TROUBLE DIAGNOSIS" .

>> INSPECTION END

EC-315
 DTC P1217 ENGINE OVER TEMPERATURE

DTC P1217 ENGINE OVER TEMPERATURE PFP:00000

Description EBS011N7

SYSTEM DESCRIPTION
NOTE:
If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-121, "DTC U1000, U1001 CAN COMMUNICATION LINE" .
Cooling Fan Control
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*1

Battery Battery voltage*1

Wheel sensor Vehicle speed*2 Cooling fan IPDM E/R
control (Cooling fan relays)
Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner ON signal*2
Refrigerant pressure sensor Refrigerant pressure
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.

The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation

PBIB1912E

EC-316
 DTC P1217 ENGINE OVER TEMPERATURE

Cooling Fan Relay Operation

The ECM controls cooling fan relays in the IPDM E/R through CAN communication line. A
Cooling fan relay
Cooling fan speed
1 2 3
EC
Stop OFF OFF OFF
Low ON OFF OFF
High ON ON ON C

COMPONENT DESCRIPTION
Cooling Fan Motor D
The cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Cooling fan motor terminals
Cooling fan speed E
(+) (−)
2 3
Low
1 4 F
High 1 and 2 3 and 4

CONSULT-II Reference Value in Data Monitor Mode EBS011N8

G
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
Air conditioner switch: OFF OFF
H
● Engine: After warming up, idle
AIR COND SIG Air conditioner switch: ON
the engine ON
(Compressor operates.)
I
Engine coolant temperature is 94°C
OFF
(201°F) or less
● Engine: After warming up, idle Engine coolant temperature is
COOLING FAN the engine between 95°C (203°F) and 99°C LOW J
● Air conditioner switch: OFF (210°F)
Engine coolant temperature is 100°C
HI
(212°F) or more K

On Board Diagnosis Logic EBS011N9

If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will L
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
This self-diagnosis has the one trip detection logic. M

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
(The cooling fan circuit is open or
● Cooling fan does not operate properly (Over- shorted.)
heat). ● Cooling fan
● Cooling fan system does not operate prop- ● Radiator hose
P1217 Engine over tempera- erly (Overheat).
● Radiator
1217 ture (Overheat) ● Engine coolant was not added to the system
● Radiator cap
using the proper filling method.
● Water pump
● Engine coolant is not within the specified
range. ● Thermostat
For more information, refer to EC-330,
"Main 12 Causes of Overheating" .

EC-317
 DTC P1217 ENGINE OVER TEMPERATURE

CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to CO-9, "Changing Engine
Coolant" . Also, replace the engine oil. Refer to LU-8, "Changing Engine Oil" .
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-14, "Engine Coolant Mixture Ratio" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function Check EBS011NA

Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-324,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-324,
"Diagnostic Procedure" .
3. Turn ignition switch ON.

SEF621W

4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-

SULT-II.
5. If the results are NG, go to EC-324, "Diagnostic Procedure" .

SEF646X

WITH GST
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-324,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-324,
"Diagnostic Procedure" .
3. Start engine.
Be careful not to overheat engine.
4. Turn air conditioner switch ON. SEF621W

5. Turn blower fan switch ON.

EC-318
 DTC P1217 ENGINE OVER TEMPERATURE

6. Make sure that cooling fan operates at low speed.

If NG, go to EC-324, "Diagnostic Procedure" . A
If OK, go to the following step.
7. Turn ignition switch OFF.
8. Turn air conditioner switch and blower fan switch OFF. EC
9. Disconnect engine coolant temperature sensor harness connec-
tor.
10. Connect 150Ω resistor to engine coolant temperature sensor C
harness connector.
SEC163BA

D
11. Restart engine and make sure that cooling fan operates at
higher speed than low speed.
Be careful not to overheat engine.
E
12. If NG, go to EC-324, "Diagnostic Procedure" .

G
MEC475B

EC-319
 DTC P1217 ENGINE OVER TEMPERATURE

Wiring Diagram (LHD Models) EBS011NB

TBWT0555E

EC-320
DTC P1217 ENGINE OVER TEMPERATURE

EC

TBWT0556E

EC-321
 DTC P1217 ENGINE OVER TEMPERATURE

Wiring Diagram (RHD Models) EBS011PV

TBWT0557E

EC-322
DTC P1217 ENGINE OVER TEMPERATURE

EC

TBWT0558E

EC-323
 DTC P1217 ENGINE OVER TEMPERATURE

Diagnostic Procedure EBS011NC

1. INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes >> GO TO 2.
No >> GO TO 4.

2. CHECK COOLING FAN LOW SPEED OPERATION

With CONSULT-II
1. Start engine and let it idle.
2. Select “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II and touch “LOW” on the CONSULT-II screen.
3. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK >> GO TO 3.
NG >> Check cooling fan low speed control circuit. (Go to EC-
327, "PROCEDURE A" .)

SEF784Z

3. CHECK COOLING FAN HIGH SPEED OPERATION

With CONSULT-II
1. Touch “HIGH” on the CONSULT-II screen.
2. Make sure that cooling fans-1 and -2 operate at higher speed
than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
329, "PROCEDURE B" .)

SEF785Z

4. CHECK COOLING FAN LOW SPEED OPERATION

Without CONSULT-II
1. Start engine and let it idle.
2. Turn air conditioner switch ON.
3. Turn blower fan switch ON.
4. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK >> GO TO 5.
NG >> Check cooling fan low speed control circuit. (Go to EC-
327, "PROCEDURE A" .)

SEC163BA

EC-324
 DTC P1217 ENGINE OVER TEMPERATURE

5. CHECK COOLING FAN HIGH SPEED OPERATION A

Without CONSULT-II
1. Turn ignition switch OFF.
EC
2. Turn air conditioner switch and blower fan switch OFF.
3. Disconnect engine coolant temperature sensor harness connector.
4. Connect 150Ω resistor to engine coolant temperature sensor harness connector. C
5. Restart engine and make sure that cooling fans-1 and -2 oper-
ate at higher speed than low speed.
OK or NG D
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
329, "PROCEDURE B" .) E

F
MEC475B

6. CHECK COOLING SYSTEM FOR LEAK G

Apply pressure to the cooling system with a tester, and check if the
pressure drops.
H
Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm2 , 23 psi)
CAUTION:
Higher than the specified pressure may cause radiator damage. I
Pressure should not drop.
OK or NG
OK >> GO TO 7. J
NG >> Check the following for leak. Refer to CO-9, "LEAK
CHECK" . SLC754A

● Hose
K
● Radiator

● Water pump

L
7. CHECK RADIATOR CAP
Apply pressure to cap with a tester.
M
Radiator cap relief pressure: 59 - 98 kPa (0.59 - 0.98 bar,
0.6 - 1.0 kg/cm2 , 9 - 14 psi)
OK or NG
OK >> GO TO 8.
NG >> Replace radiator cap.

SLC755A

EC-325
 DTC P1217 ENGINE OVER TEMPERATURE

8. CHECK THERMOSTAT
1. Check valve seating condition at normal room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
Valve opening temperature: 76.5°C (170°F) [standard]
Valve lift: More than 8.6 mm/90°C
(0.339 in/194°F)
3. Check if valve is closed at 5°C (9°F) below valve opening tem-
perature.
For details, refer to CO-25, "WATER INLET AND THERMO-
STAT ASSEMBLY" .
OK or NG
SLC343
OK >> GO TO 9.
NG >> Replace thermostat

9. CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to EC-153, "Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace engine coolant temperature sensor.

10. CHECK MAIN 12 CAUSES

If the cause cannot be isolated, go to EC-330, "Main 12 Causes of Overheating" .

>> INSPECTION END

EC-326
 DTC P1217 ENGINE OVER TEMPERATURE

PROCEDURE A
A
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E6. EC
3. Check voltage between IPDM E/R terminals 15, 16 and ground
with CONSULT-II or tester.
C
Voltage: Battery voltage
OK or NG
OK >> GO TO 3. D
NG >> GO TO 2.

PBIB1924E

2. DETECT MALFUNCTIONING PART F

Check the following.

● 40A fusible links G
● Harness for open or short between IPDM E/R and battery

>> Repair open circuit or short to ground or short to power in harness or connectors. H

3. CHECK COOLING FAN MOTORS CIRCUIT

I
1. Disconnect cooling fan motor-1 harness connector and cooling
fan motor-2 harness connector.
2. Check harness continuity between cooling fan motor-1 terminal
J
2 and IPDM E/R terminal 11, cooling fan motor-1 terminal 3 and
ground.
Refer to wiring diagram.
K
Continuity should exist.
3. Check harness continuity between cooling fan motor-2 terminal
2 and IPDM E/R terminal 10, cooling fan motor-2 terminal 3 and L
ground. PBIB1085E

Refer to wiring diagram.

Continuity should exist. M
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.

EC-327
 DTC P1217 ENGINE OVER TEMPERATURE

4. DETECT MALFUNCTIONING PART

Check the following.
● Harness connector E12, F3
● Harness connector F103, F151
● Harness for open or short between cooling fan motor-1 and IPDM E/R
● Harness for open or short between cooling fan motor-1 and ground
● Harness for open or short between cooling fan motor-2 and IPDM E/R
● Harness for open or short between cooling fan motor-2 and ground

>> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK COOLING FAN MOTORS

Refer to EC-330, "Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace cooling fan motors.

6. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-27, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness or connector.

EC-328
 DTC P1217 ENGINE OVER TEMPERATURE

PROCEDURE B
A
1. CHECK COOLING FAN MOTORS CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connectors. EC
3. Disconnect cooling fan motor-1 harness connector and cooling
fan motor-2 harness connector.
4. Check harness continuity between the following; C
cooling fan motor-1 terminal 1 and IPDM E/R terminal 8,
cooling fan motor-1 terminal 4 and IPDM E/R terminal 9,
IPDM E/R terminal 14 and ground, D
IPDM E/R terminal 60 and ground.
Refer to wiring diagram.
Continuity should exist. E

5. Check harness continuity between the following; PBIB1085E

cooling fan motor-2 terminal 1 and IPDM E/R terminal 13,

cooling fan motor-2 terminal 4 and IPDM E/R terminal 12, F
IPDM E/R terminal 14 and ground,
IPDM E/R terminal 60 and ground.
Refer to wiring diagram. G
Continuity should exist.
6. Also check harness for short to ground and short to power. H
OK or NG
OK >> GO TO 3.
NG >> GO TO 2. I
2. DETECT MALFUNCTIONING PART
Check the following. J
● Harness connector E12, F3
● Harness connector F103, F151
● Harness for open or short between cooling fan motor-1 and IPDM E/R K
● Harness for open or short between cooling fan motor-2 and IPDM E/R
● Harness for open or short between IPDM E/R and ground
L

>> Repair open circuit or short to ground or short to power in harness or connectors.

3. CHECK COOLING FAN MOTORS M

Refer to EC-330, "Component Inspection" .

OK or NG
OK >> GO TO 4.
NG >> Replace cooling fan motors.

4. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-27, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair or replace harness connectors.

EC-329
 DTC P1217 ENGINE OVER TEMPERATURE

Main 12 Causes of Overheating EBS011ND

Engine Step Inspection item Equipment Standard Reference page

OFF 1 ● Blocked radiator ● Visual No blocking —
● Blocked condenser
● Blocked radiator grille
● Blocked bumper
2 ● Coolant mixture ● Coolant tester 50 - 50% coolant mixture MA-14
3 ● Coolant level ● Visual Coolant up to MAX level CO-9
in reservoir tank and radi-
ator filler neck
4 ● Radiator cap ● Pressure tester 59 - 98 kPa CO-14
(0.59 - 0.98 bar, 0.6 - 1.0
kg/cm2 , 9 - 14 psi) (Limit)

ON*2 5 ● Coolant leaks ● Visual No leaks CO-9

ON*2 6 ● Thermostat ● Touch the upper and Both hoses should be hot CO-25
lower radiator hoses

ON*1 7 ● Cooling fan ● CONSULT-II Operating See trouble diagnosis for

DTC P1217 (EC-316 ).
OFF 8 ● Combustion gas leak ● Color checker chemical Negative —
tester 4 Gas analyzer

ON*3 9 ● Coolant temperature ● Visual Gauge less than 3/4 —

gauge when driving
● Coolant overflow to ● Visual No overflow during driving CO-9
reservoir tank and idling

OFF*4 10 ● Coolant return from ● Visual Should be initial level in CO-9

reservoir tank to radia- reservoir tank
tor
OFF 11 ● Cylinder head ● Straight gauge feeler 0.1 mm (0.004 in) Maxi- EM-89
gauge mum distortion (warping)
12 ● Cylinder block and pis- ● Visual No scuffing on cylinder EM-106
tons walls or piston
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-5, "OVERHEATING CAUSE ANALYSIS" .

Component Inspection EBS011NE

COOLING FAN MOTORS-1 AND -2

1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and
check operation.

terminals
Speed
(+) (−)
2 3
Low
Cooling fan motor 1 4
High 1 and 2 3 and 4
SEF734W

Cooling fan motor should operate.

If NG, replace cooling fan motor.

EC-330
 DTC P1225 TP SENSOR

DTC P1225 TP SENSOR PFP:16119

A
Component Description EBS011NF

Electric throttle control actuator consists of throttle control motor,

throttle position sensor, etc. The throttle position sensor responds to EC
the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi- C
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig- D
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
PBIB0145E
tion.
E
On Board Diagnosis Logic EBS011NG

The MI will not light up for this diagnosis.

F
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
Closed throttle position
P1225 Closed throttle position learning value is exces- ● Electric throttle control actuator
learning performance G
1225 sively low. (TP sensor 1 and 2)
problem

DTC Confirmation Procedure EBS011NH

H
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION: I
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
J
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds.
K
4. Turn ignition switch ON.
5. If 1st trip DTC is detected, go to EC-332, "Diagnostic Procedure"
. L

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-331
 DTC P1225 TP SENSOR

Diagnostic Procedure EBS011NI

1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is caught between the throttle valve and
the housing.
OK or NG
OK >> GO TO 2.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside.

PBIB1093E

2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

Removal and Installation EBS011NJ

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" .

EC-332
 DTC P1226 TP SENSOR

DTC P1226 TP SENSOR PFP:16119

A
Component Description EBS011NK

Electric throttle control actuator consists of throttle control motor,

throttle position sensor, etc. The throttle position sensor responds to EC
the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi- C
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig- D
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
PBIB0145E
tion.
E
On Board Diagnosis Logic EBS011NL

The MI will not light up for this diagnosis.

F
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
Closed throttle position
P1226 Closed throttle position learning is not per- ● Electric throttle control actuator
learning performance G
1226 formed successfully, repeatedly. (TP sensor 1 and 2)
problem

DTC Confirmation Procedure EBS011NM

H
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION: I
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
J
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds.
K
4. Turn ignition switch ON.
5. Repeat steps 3 and 4 for 32 times.
6. If 1st trip DTC is detected, go to EC-334, "Diagnostic Procedure" L
.

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-333
 DTC P1226 TP SENSOR

Diagnostic Procedure EBS011NN

1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is caught between the throttle valve and
the housing.
OK or NG
OK >> GO TO 2.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside.

PBIB1093E

2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

Removal and Installation EBS011NO

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" .

EC-334
 DTC P1229 SENSOR POWER SUPPLY

DTC P1229 SENSOR POWER SUPPLY PFP:16119

A
On Board Diagnosis Logic EBS011NP

This self-diagnosis has the one trip detection logic.

EC
Trouble diagnosis
DTC No. DTC detecting condition Possible cause
name
● Harness or connectors
(The TP sensor 1 and 2 circuit is shorted.) C
P1229 Sensor power supply ECM detects a voltage of power source for
● Electric throttle control actuator
1229 circuit short sensor is excessively low or high.
(TP sensor 1 and 2)
● ECM pin terminal D

FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up. E

Engine operation condition in fail-safe mode

ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return F
spring.

DTC Confirmation Procedure EBS011NQ

G
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION: H
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
I
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second. J
4. If DTC is detected, go to EC-337, "Diagnostic Procedure" .

SEF058Y

WITH GST M
Follow the procedure “WITH CONSULT-II” above.

EC-335
 DTC P1229 SENSOR POWER SUPPLY

Wiring Diagram EBS011NR

TBWT0559E

EC-336
 DTC P1229 SENSOR POWER SUPPLY

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Sensor power supply C
47 W/R [Ignition switch: ON] Approximately 5V
(Throttle position sensor)

Diagnostic Procedure EBS011NS

D
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. E

>> GO TO 2.
F

H
PBIB1071E

2. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT

I
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
J

L
PBIB1079E

3. Check voltage between electric throttle control actuator terminal

1 and ground with CONSULT-II or tester. M

Voltage: Approximately 5V
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.

PBIB0082E

EC-337
 DTC P1229 SENSOR POWER SUPPLY

3. CHECK SENSOR POWER SUPPLY CIRCUITS

Check the following.
● Harness for short to power and short to ground between ECM terminal 47 and electric throttle control
actuator terminal 1.
● ECM pin terminal.
OK or NG
OK >> GO TO 4.
NG >> Repair short to ground or short to power in harness or connectors.

4. CHECK THROTTLE POSITION SENSOR

Refer to EC-450, "Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

6. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-338
 DTC P1271, P1281 A/F SENSOR 1

DTC P1271, P1281 A/F SENSOR 1 PFP:22693

A
Component Description EBS011PW

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a EC
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
C
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 <
< air).
The exhaust gas components diffuse through the diffusion gap at the D
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance. SEF579Z

E
An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to F
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800°C (1,292 - 1,472°F).
G

H
SEF580Z

CONSULT-II Reference Value in Data Monitor Mode EBS011NU

I
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
J
A/F SEN1 (B1) Maintaining engine speed at
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) 2,000 rpm

On Board Diagnosis Logic EBS011PX

K
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1
signal is not inordinately low.
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause L
P1271
1271 ● Harness or connectors
(Bank 1) Air fuel ratio (A/F) sensor 1 ● The A/F signal computed by ECM from the (The A/F sensor 1 circuit is open or M
P1281 circuit no activity detected A/F sensor 1 signal is constantly approx. 0V. shorted.)
1281 ● Air fuel ratio (A/F) sensor 1
(Bank 2)

DTC Confirmation Procedure EBS011NW

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II.

EC-339
 DTC P1271, P1281 A/F SENSOR 1

3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.

If the indication is constantly approx. 0V, go to EC-344, "Diag-
nostic Procedure" .
If the indication is not constantly approx. 0V, go to next step.
4. Turn ignition switch OFF, wait at least 10 seconds and then
restart engine.
5. Drive and accelerate vehicle to more than 40 km/h (25 MPH)
within 20 seconds after restarting engine.
6. Maintain the following conditions for about 20 consecutive sec-
onds.
SEF581Z

ENG SPEED 1,000 - 3,200 rpm

VHCL SPEED SE More than 40 km/h (25 MPH)
B/FUEL SCHDL 1.5 - 9.0 msec
Gear position Suitable position

NOTE:
● Keep the accelerator pedal as steady as possible during the cruising.

● If this procedure is not completed within 1 minute after restarting engine at step 4, return to step
4.
7. If 1st trip DTC is displayed, go to EC-344, "Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-340
 DTC P1271, P1281 A/F SENSOR 1

Wiring Diagram EBS011PY

BANK 1 A

EC

TBWT0560E

EC-341
 DTC P1271, P1281 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
16 LG/B Approximately 3.1V
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V

EC-342
 DTC P1271, P1281 A/F SENSOR 1

BANK 2
A

EC

TBWT0561E

EC-343
 DTC P1271, P1281 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
57 L Approximately 2.6V
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V

Diagnostic Procedure EBS011R9

1. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

PBIB1071E

3. Disconnect A/F sensor 1 harness connector.

PBIB1911E

4. Turn ignition switch ON.

5. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

PBIB1683E

EC-344
 DTC P1271, P1281 A/F SENSOR 1

2. DETECT MALFUNCTIONING PART A

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7 EC
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse
C

>> Repair or replace harness or connectors.

3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT D

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. E
3. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
F
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76 G
2 75 2 77
5 35 5 57
H
6 56 6 58

Continuity should exist.

I
4. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Bank 1 Bank 2 J
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
K
2 75 2 77
5 35 5 57
6 56 6 58 L

Continuity should not exist.

5. Also check harness for short to power. M
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Removal and Installation EBS011NZ

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-345
 DTC P1272, P1282 A/F SENSOR 1

DTC P1272, P1282 A/F SENSOR 1 PFP:22693

Component Description EBS011Q0

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 <
< air).
The exhaust gas components diffuse through the diffusion gap at the
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance. SEF579Z

An electronic circuit controls the pump current through the oxygen-

pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800°C (1,292 - 1,472°F).

SEF580Z

CONSULT-II Reference Value in Data Monitor Mode EBS011O1

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
A/F SEN1 (B1) Maintaining engine speed at
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) 2,000 rpm

On Board Diagnosis Logic EBS011Q1

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1
signal is not inordinately high.
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P1272
1272 ● Harness or connectors
(Bank 1) Air fuel ratio (A/F) sensor 1 ● The A/F signal computed by ECM from the A/F (The A/F sensor 1 circuit is open or
P1282 circuit no activity detected sensor 1 signal is constantly approx. 5V. shorted.)
1282 ● Air fuel ratio (A/F) sensor 1
(Bank 2)

DTC Confirmation Procedure EBS011O3

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II.

EC-346
 DTC P1272, P1282 A/F SENSOR 1

3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.

If the indication is constantly approx. 5V, go to EC-351, "Diag- A
nostic Procedure" .
If the indication is not constantly approx. 5V, go to next step.
4. Turn ignition switch OFF, wait at least 10 seconds and then EC
restart engine.
5. Drive and accelerate vehicle to more than 40 km/h (25 MPH)
within 20 seconds after restarting engine.
C
6. Maintain the following conditions for about 20 consecutive sec-
onds.
SEF581Z

ENG SPEED 1,000 - 3,200 rpm D

VHCL SPEED SE More than 40 km/h (25 MPH)
B/FUEL SCHDL 1.5 - 9.0 msec
E
Gear position Suitable position

NOTE:
● Keep the accelerator pedal as steady as possible during the cruising. F
● If this procedure is not completed within 1 minute after restarting engine at step 4, return to step
4.
7. If 1st trip DTC is displayed, go to EC-351, "Diagnostic Procedure" . G
WITH GST
Follow the procedure “WITH CONSULT-II” above. H

EC-347
 DTC P1272, P1282 A/F SENSOR 1

Wiring Diagram EBS011Q2

BANK 1

TBWT0560E

EC-348
 DTC P1272, P1282 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
16 LG/B Approximately 3.1V C
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V
D

EC-349
 DTC P1272, P1282 A/F SENSOR 1

BANK 2

TBWT0561E

EC-350
 DTC P1272, P1282 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
57 L Approximately 2.6V C
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V
D

Diagnostic Procedure EBS011Q3

1. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT E

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. F

PBIB1071E I

3. Disconnect A/F sensor 1 harness connector.

J

PBIB1911E M
4. Turn ignition switch ON.
5. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

PBIB1683E

EC-351
 DTC P1272, P1282 A/F SENSOR 1

2. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should exist.

4. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should not exist.

5. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Removal and Installation EBS011O6

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-352
 DTC P1273, P1283 A/F SENSOR 1

DTC P1273, P1283 A/F SENSOR 1 PFP:22693

A
Component Description EBS011Q4

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a EC
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
C
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 <
< air).
The exhaust gas components diffuse through the diffusion gap at the D
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance. SEF579Z

E
An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to F
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800°C (1,292 - 1,472°F).
G

H
SEF580Z

CONSULT-II Reference Value in Data Monitor Mode EBS011Q5

I
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
J
A/F SEN1 (B1) Maintaining engine speed at
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) 2,000 rpm

On Board Diagnosis Logic EBS011Q6

K
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be
shifted LEAN side or RICH side.
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause L
P1273 ● Air fuel ratio (A/F) sensor 1
1273
● The output voltage computed by ECM from the ● Air fuel ratio (A/F) sensor 1 heater
(Bank 1) Air fuel ratio (A/F) sensor 1 M
A/F sensor 1 signal is shifted to the lean side ● Fuel pressure
P1283 lean shift monitoring
for a specified period. ● Injectors
1283
(Bank 2) ● Intake air leaks

DTC Confirmation Procedure EBS011Q7

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CON-
SULT-II.

EC-353
 DTC P1273, P1283 A/F SENSOR 1

4. Clear the self-learning coefficient by touching “CLEAR”.

5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and keep the engine speed between 3,500 and
4,000 rpm for 1 minute under no load.
7. Let engine idle for 1 minute.
8. Keep engine speed between 2,500 and 3,000 rpm for 13 min-
utes.
9. If 1st trip DTC is detected, go to EC-358, "Diagnostic Procedure"
.
SEF968Y

WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Disconnect mass air flow sensor harness connector.
4. Start engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Select “MODE 3” with GST and make sure that DTC P0102 is
detected.
7. Select “MODE 4” with GST and erase the DTC P0102.
8. Start engine and keep the engine speed between 3,500 and
4,000 rpm for 1 minute under no load.
9. Let engine idle for 1 minute. PBIB1077E

10. Keep engine speed between 2,500 and 3,000 rpm for 13 min-
utes.
11. Select “MODE 7” with GST.
If 1st trip DTC is detected, go to EC-358, "Diagnostic Procedure" .

EC-354
 DTC P1273, P1283 A/F SENSOR 1

Wiring Diagram EBS011Q8

BANK 1 A

EC

TBWT0560E

EC-355
 DTC P1273, P1283 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
16 LG/B Approximately 3.1V
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V

EC-356
 DTC P1273, P1283 A/F SENSOR 1

BANK 2
A

EC

TBWT0561E

EC-357
 DTC P1273, P1283 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
57 L Approximately 2.6V
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V

Diagnostic Procedure EBS011Q9

1. CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

2. RETIGHTEN A/F SENSOR 1

Loosen and retighten the A/F sensor 1.

PBIB1908E

Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)

>> GO TO 3.

EC-358
 DTC P1273, P1283 A/F SENSOR 1

3. CLEAR THE SELF-LEARNING DATA. A

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
EC
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed. C
Is the 1st trip DTC P0171 or P0174 detected?
Is it difficult to start engine?
D

SEF968Y

F
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF. G
3. Disconnect mass air flow sensor harness connector.
4. Restart engine and let it idle for at least 3 seconds.
H
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
I
7. Erase the DTC memory. Refer to EC-43, "HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
8. Make sure DTC P0000 is displayed. J
9. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0174 detected? PBIB1077E

Is it difficult to start engine?

K
Yes or No
Yes >> Perform trouble diagnosis for DTC P0171or P0174. Refer to EC-180 .
No >> GO TO 4.
L

EC-359
 DTC P1273, P1283 A/F SENSOR 1

4. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect A/F sensor 1 harness connector.

PBIB1911E

3. Turn ignition switch ON.

4. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

PBIB1683E

5. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

EC-360
 DTC P1273, P1283 A/F SENSOR 1

6. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT A
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals. EC
Refer to Wiring Diagram.
Bank 1 Bank 2
C
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77 D
5 35 5 57
6 56 6 58
E
Continuity should exist.
4. Check harness continuity between the following terminals and ground. F
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal G
1 16 1 76
2 75 2 77
H
5 35 5 57
6 56 6 58
I
Continuity should not exist.
5. Also check harness for short to power.
OK or NG J
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
K
7. CHECK A/F SENSOR 1 HEATER
Refer to EC-257, "Component Inspection" .
L
OK or NG
OK >> GO TO 8.
NG >> Replace A/F sensor 1. M
8. CHECK INTERMITTENT INCIDENT
Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Removal and Installation EBS010GT

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-361
 DTC P1274, P1284 A/F SENSOR 1

DTC P1274, P1284 A/F SENSOR 1 PFP:22693

Component Description EBS011QA

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 <
< air).
The exhaust gas components diffuse through the diffusion gap at the
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance. SEF579Z

An electronic circuit controls the pump current through the oxygen-

pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800°C (1,292 - 1,472°F).

SEF580Z

CONSULT-II Reference Value in Data Monitor Mode EBS010GV

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
A/F SEN1 (B1) Maintaining engine speed at
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) 2,000 rpm

On Board Diagnosis Logic EBS011QB

To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored not to be
shifted to the LEAN side or RICH side.
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P1274 ● Air fuel ratio (A/F) sensor 1
1274 ● Air fuel ratio (A/F) sensor 1 heater
(Bank 1) ● The A/F signal computed by ECM from the
Air fuel ratio (A/F) sensor 1
A/F sensor 1 signal is shifted to the rich side ● Fuel pressure
P1284 rich shift monitoring
for a specified period. ● Injectors
1244
(Bank 2)

DTC Confirmation Procedure EBS011QC

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CON-
SULT-II.

EC-362
 DTC P1274, P1284 A/F SENSOR 1

4. Clear the self-learning coefficient by touching “CLEAR”.

5. Turn ignition switch OFF and wait at least 10 seconds. A
6. Start engine and keep the engine speed between 3,500 and
4,000 rpm for 1 minute under no load.
7. Let engine idle for 1 minute. EC
8. Keep engine speed between 2,500 and 3,000 rpm for 20 min-
utes.
9. If 1st trip DTC is detected, go to EC-367, "Diagnostic Procedure" C
.
SEF968Y

D
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds. E
3. Disconnect mass air flow sensor harness connector.
4. Start engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness con- F
nector.
6. Select “MODE 3” with GST and make sure that DTC P0102 is
detected. G
7. Select “MODE 4” with GST and erase the DTC P0102.
8. Start engine and keep the engine speed between 3,500 and
4,000 rpm for 1 minute under no load. H
9. Let engine idle for 1 minute. PBIB1077E

10. Keep engine speed between 2,500 and 3,000 rpm for 20 min-
utes. I
11. Select “MODE 7” with GST.
If 1st trip DTC is detected, go to EC-367, "Diagnostic Procedure" .
J

EC-363
 DTC P1274, P1284 A/F SENSOR 1

Wiring Diagram EBS011QD

BANK 1

TBWT0560E

EC-364
 DTC P1274, P1284 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
16 LG/B Approximately 3.1V C
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V
D

EC-365
 DTC P1274, P1284 A/F SENSOR 1

BANK 2

TBWT0561E

EC-366
 DTC P1274, P1284 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
57 L Approximately 2.6V C
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V
D

Diagnostic Procedure EBS011QE

1. CHECK GROUND CONNECTIONS E

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. F

>> GO TO 2.
G

PBIB1071E I

2. RETIGHTEN A/F SENSOR 1

J
Loosen and retighten the A/F sensor 1.

M
PBIB1908E

Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)

>> GO TO 3.

EC-367
 DTC P1274, P1284 A/F SENSOR 1

3. CLEAR THE SELF-LEARNING DATA.

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0172 or P0175 detected?
Is it difficult to start engine?

SEF968Y

Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF.
3. Disconnect mass air flow sensor harness connector.
4. Restart engine and let it idle for at least 3 seconds.
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
7. Erase the DTC memory. Refer to EC-43, "HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
8. Make sure DTC P0000 is displayed.
9. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0172 or P0175 detected? PBIB1077E

Is it difficult to start engine?

Yes or No
Yes >> Perform trouble diagnosis for DTC P0172 or P0175. Refer to EC-189 .
No >> GO TO 4.

EC-368
 DTC P1274, P1284 A/F SENSOR 1

4. CHECK HARNESS CONNECTOR A

1. Turn ignition switch OFF.
2. Disconnect A/F sensor 1 harness connector.
EC

PBIB1911E
E
3. Check harness connector for water.
Water should not exit.
OK or NG F
OK >> GO TO 5.
NG >> Repair or replace harness connector.
G
5. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch ON. H
2. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage I
OK or NG
OK >> GO TO 7.
NG >> GO TO 6. J

K
PBIB1683E

6. DETECT MALFUNCTIONING PART L

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7 M
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

EC-369
 DTC P1274, P1284 A/F SENSOR 1

7. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should exist.

4. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should not exist.

5. Also check harness for short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK A/F SENSOR 1 HEATER

Refer to EC-257, "Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace A/F sensor 1.

9. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Removal and Installation EBS011QF

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-370
 DTC P1276, P1286 A/F SENSOR 1

DTC P1276, P1286 A/F SENSOR 1 PFP:22693

A
Component Description EBS011QG

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a EC
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
C
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 <
< air).
The exhaust gas components diffuse through the diffusion gap at the D
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance. SEF579Z

E
An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to F
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800°C (1,292 - 1,472°F).
G

H
SEF580Z

CONSULT-II Reference Value in Data Monitor Mode EBS010H2

I
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
J
A/F SEN1 (B1) Maintaining engine speed at
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) 2,000 rpm

On Board Diagnosis Logic EBS011QH

K
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1
signal fluctuates according to fuel feedback control.
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause L
P1276 ● Harness or connectors
1276 (The A/F sensor 1 circuit is open or
(Bank 1) Air fuel ratio (A/F) sensor 1 ● The A/F signal computed by ECM from the A/ shorted.) M
P1286 circuit high voltage F sensor 1 signal is constantly approx. 1.5V. ● Air fuel ratio (A/F) sensor 1
1286
(Bank 2)

DTC Confirmation Procedure EBS011QI

CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II.
3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.
EC-371
 DTC P1276, P1286 A/F SENSOR 1

If the indication is constantly approx. 1.5V and does not fluctuates, go to EC-377, "Diagnostic Procedure" .
If the indication fluctuates around 1.5V, go to next step.
4. Select “A/F SEN1 (B1) P1276” or “A/F SEN1 (B2) P1286” of “A/F SEN1” in “DTC WORK SUPPORT”
mode with CONSULT-II.
5. Touch “START”.
6. When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen.
ENG SPEED 1,000 - 3,200 rpm
Vehicle speed More than 60 km/h (40 MPH)
B/FUEL SCHDL 1.0 - 8.0 msec
Selector lever 5th position

If “TESTING” is not displayed after 20 seconds, retry from

step 2.
SEF576Z

7. Release accelerator pedal fully.

NOTE:
Never apply brake during releasing the accelerator pedal.

SEF577Z

8. Make sure that “TESTING” changes to “COMPLETED”.

If “TESTING” changed to “OUT OF CONDITION”, retry from
step 6.
9. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULT”.
If “NG” is displayed, go to EC-377, "Diagnostic Procedure" .

SEF578Z

Overall Function Check EBS011QJ

Use this procedure to check the overall function of the A/F sensor 1 circuit. During this check, a DTC might not
be confirmed.
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
3. Set 5th position, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30
MPH).
NOTE:
Never apply brake during releasing the accelerator pedal.
4. Repeat steps 2 to 3 five times.
5. Stop the vehicle and turn ignition switch OFF.
6. Wait at least 10 seconds and restart engine.
7. Repeat steps 2 to 3 five times.

EC-372
 DTC P1276, P1286 A/F SENSOR 1

8. Stop the vehicle and connect GST to the vehicle.

9. Make sure that no DTC is displayed. A
If the DTC is displayed, go to EC-377, "Diagnostic Procedure" .

EC

EC-373
 DTC P1276, P1286 A/F SENSOR 1

Wiring Diagram EBS011QK

BANK 1

TBWT0560E

EC-374
 DTC P1276, P1286 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
16 LG/B Approximately 3.1V C
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V
D

EC-375
 DTC P1276, P1286 A/F SENSOR 1

BANK 2

TBWT0561E

EC-376
 DTC P1276, P1286 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
57 L Approximately 2.6V C
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V
D

Diagnostic Procedure EBS011QL

1. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT E

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. F

PBIB1071E I

3. Disconnect A/F sensor 1 harness connector.

J

PBIB1911E M
4. Turn ignition switch ON.
5. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.

PBIB1683E

EC-377
 DTC P1276, P1286 A/F SENSOR 1

2. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should exist.

4. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77
5 35 5 57
6 56 6 58

Continuity should not exist.

5. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Removal and Installation EBS010H8

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-378
 DTC P1278, P1288 A/F SENSOR 1

DTC P1278, P1288 A/F SENSOR 1 PFP:22693

A
Component Description EBS010H9

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a EC
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
C
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 <
< air).
The exhaust gas components diffuse through the diffusion gap at the D
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance. SEF579Z

E
An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to F
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800°C (1,292 - 1,472°F).
G

H
SEF580Z

CONSULT-II Reference Value in Data Monitor Mode EBS010HA

I
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
J
A/F SEN1 (B1) Maintaining engine speed at
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) 2,000 rpm

On Board Diagnosis Logic EBS010HB

K
To judge the malfunction of A/F sensor 1, this diagnosis measures response time of the A/F signal computed
by ECM from the A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel
feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the com- L
pensated time (the A/F signal cycling time index) is inordinately long or not.
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P1278 ● Harness or connectors M
1278 (The A/F sensor 1 circuit is open or
(Bank 1) shorted.)
● Air fuel ratio (A/F) sensor 1
● Air fuel ratio (A/F) sensor 1 heater
● The response (from RICH to LEAN) of the A/F
Air fuel ratio (A/F) sensor 1 ● Fuel pressure
signal computed by ECM from A/F sensor 1
P1288 circuit slow response
signal takes more than the specified time. ● Injectors
1288
(Bank 2) ● Intake air leaks
● Exhaust gas leaks
● PCV
● Mass air flow sensor

EC-379
 DTC P1278, P1288 A/F SENSOR 1

DTC Confirmation Procedure EBS011QM

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1minute under no load.
4. Let engine idle for 1 minute.
5. Select “A/F SEN1(B1) P1278/P1279” or “A/F SEN1(B1) P1288/P1289” of “A/F SEN1” in “DTC WORK
SUPPORT” mode with CONSULT-II.
6. Touch “START”.
If “COMPLETED” appears on CONSULT-II screen, go to step
10.
If “COMPLETED” does not appear on CONSULT-II screen, go to
the following step.

PBIB0756E

7. After perform the following procedure, “TESTING” will be dis-

played on the CONSULT-II screen.
a. Increase the engine speed up to 4,000 to 5,000 rpm and keep it
for 10 seconds.
b. Fully release accelerator pedal and then let engine idle for about
10 seconds.
If “TESTING” is not displayed after 10 seconds, refer to EC-
105, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
8. Wait for about 20 seconds at idle at under the condition that
“TESTING” is displayed on the CONSULT-II screen.
PBIB1925E

9. Make sure that “TESTING” changes to “COMPLETED”.

If “TESTING” changed to “OUT OF CONDITION”, refer to
EC-105, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
10. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULT”.
If “NG” is displayed, go to EC-385, "Diagnostic Procedure" .

PBIB0758E

WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Select “MODE 1” with GST.
3. Calculate the total value of “Short term fuel trim” and “Long term fuel trim” indications.
Make sure that the total percentage should be within ±15%.
If OK, go to the following step.
If NG, check the following.

EC-380
 DTC P1278, P1288 A/F SENSOR 1

● Intake air leaks

● Exhaust gas leaks A
● Incorrect fuel pressure

● Lack of fuel
EC
● Injectors

● Incorrect PCV hose connection

● PCV valve
C
● Mass air flow sensor

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1minute under no load. D
6. Let engine idle for 1 minute.
7. Increase the engine speed up to 4,000 to 5,000 rpm and keep it for 10 seconds.
8. Fully release accelerator pedal and then let engine idle for about 1 minute. E
9. Repeat steps from 4 to 8.
10. Select “MODE 3” with GST and make sure that no DTC is displayed.
If the DTC is displayed, go to EC-385, "Diagnostic Procedure" . F

EC-381
 DTC P1278, P1288 A/F SENSOR 1

Wiring Diagram EBS010HD

BANK 1

EC-382
 DTC P1278, P1288 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
16 LG/B Approximately 3.1V C
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V
D

EC-383
 DTC P1278, P1288 A/F SENSOR 1

BANK 2

EC-384
 DTC P1278, P1288 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
57 L Approximately 2.6V C
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V
D

Diagnostic Procedure EBS010HE

1. CHECK GROUND CONNECTIONS E

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. F

>> GO TO 2.
G

PBIB1071E I

2. RETIGHTEN A/F SENSOR 1

J
Loosen and retighten the A/F sensor 1.

M
PBIB1908E

Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)

>> GO TO 3.

EC-385
 DTC P1278, P1288 A/F SENSOR 1

3. CHECK EXHAUST GAS LEAK

1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before three way catalyst 1.

PBIB1922E

OK or NG
OK >> GO TO 4.
NG >> Repair or replace.

4. CHECK FOR INTAKE AIR LEAK

Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace.

EC-386
 DTC P1278, P1288 A/F SENSOR 1

5. CLEAR THE SELF-LEARNING DATA A

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
EC
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”
or “START”.
C
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P172, P0174 or P0175 detected?
Is it difficult to start engine?
D

SEF968Y

F
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF. G
3. Disconnect mass air flow sensor harness connector.
4. Restart engine and let it idle for at least 3 seconds.
H
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
I
7. Erase the DTC memory. Refer to EC-43, "HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
8. Make sure DTC P0000 is displayed. J
9. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? PBIB1077E

Is it difficult to start engine?

K
Yes or No
Yes >> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to EC-180 or EC-189 .
No >> GO TO 6.
L

EC-387
 DTC P1278, P1288 A/F SENSOR 1

6. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect A/F sensor 1 harness connector.

PBIB1911E

3. Turn ignition switch ON.

4. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.

PBIB1683E

7. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

EC-388
 DTC P1278, P1288 A/F SENSOR 1

8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT A
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals. EC
Refer to Wiring Diagram.
Bank 1 Bank 2
C
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77 D
5 35 5 57
6 56 6 58
E
Continuity should exist.
4. Check harness continuity between the following terminals and ground. F
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal G
1 16 1 76
2 75 2 77
H
5 35 5 57
6 56 6 58
I
Continuity should not exist.
5. Also check harness for short to power.
OK or NG J
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
K
9. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Refer to EC-257, "Component Inspection" .
L
OK or NG
OK >> GO TO 10.
NG >> Replace A/F sensor 1. M
10. CHECK MASS AIR FLOW SENSOR
Refer to EC-143, "Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace mass air flow sensor.

11. CHECK PCV VALVE

Refer to EC-514, "POSITIVE CRANKCASE VENTILATION" .
OK or NG
OK >> GO TO 12.
NG >> Repair or replace PCV valve.

EC-389
 DTC P1278, P1288 A/F SENSOR 1

12. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Removal and Installation EBS010HF

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST" .

EC-390
 DTC P1279, P1289 A/F SENSOR 1

DTC P1279, P1289 A/F SENSOR 1 PFP:22693

A
Component Description EBS011QN

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a EC
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
C
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range (0.7 <
< air).
The exhaust gas components diffuse through the diffusion gap at the D
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance. SEF579Z

E
An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to F
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800°C (1,292 - 1,472°F).
G

H
SEF580Z

CONSULT-II Reference Value in Data Monitor Mode EBS010HH

I
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
J
A/F SEN1 (B1) Maintaining engine speed at
● Engine: After warming up Fluctuates around 1.5V
A/F SEN1 (B2) 2,000 rpm

On Board Diagnosis Logic EBS011QO

K
To judge the malfunction of A/F sensor 1, this diagnosis measures response time of the A/F signal computed
by ECM from the air fuel ration A/F sensor 1 signal. The time is compensated by engine operating (speed and
load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether L
the compensated time (the A/F signal cycling time index) is inordinately long or not.
DTC No. Trouble diagnosis name DTC detecting condition Possible Cause
P1279 ● Harness or connectors M
1279 (The A/F sensor 1 circuit is open or
(Bank 1) shorted.)
● Air fuel ratio (A/F) sensor 1
● Air fuel ratio (A/F) sensor 1 heater
● The response (from LEAN to RICH) of the A/F
Air fuel ratio (A/F) sensor 1 ● Fuel pressure
signal computed by ECM from A/F sensor 1
P1289 circuit slow response
signal takes more than the specified time. ● Injectors
1289
(Bank 2) ● Intake air leaks
● Exhaust gas leaks
● PCV
● Mass air flow sensor

EC-391
 DTC P1279, P1289 A/F SENSOR 1

DTC Confirmation Procedure EBS011QP

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1minute under no load.
4. Let engine idle for 1 minute.
5. Select “A/F SEN1(B1) P1278/P1279” or “A/F SEN1(B1) P1288/P1289” of “A/F SEN1” in “DTC WORK
SUPPORT” mode with CONSULT-II.
6. Touch “START”.
If “COMPLETED” appears on CONSULT-II screen, go to step
10.
If “COMPLETED” does not appear on CONSULT-II screen, go to
the following step.

PBIB0756E

7. After perform the following procedure, “TESTING” will be dis-

played on the CONSULT-II screen.
a. Increase the engine speed up to 4,000 to 5,000 rpm and keep it
for 10 seconds.
b. Fully release accelerator pedal and then let engine idle for about
10 seconds.
If “TESTING” is not displayed after 10 seconds, refer to EC-
105, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
8. Wait for about 20 seconds at idle at under the condition that
“TESTING” is displayed on the CONSULT-II screen.
PBIB1925E

9. Make sure that “TESTING” changes to “COMPLETED”.

If “TESTING” changed to “OUT OF CONDITION”, refer to
EC-105, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
10. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULT”.
If “NG” is displayed, go to EC-397, "Diagnostic Procedure" .

PBIB0758E

WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Select “MODE 1” with GST.
3. Calculate the total value of “Short term fuel trim” and “Long term fuel trim” indications.
Make sure that the total percentage should be within ±15%.
If OK, go to the following step.
If NG, check the following.

EC-392
 DTC P1279, P1289 A/F SENSOR 1

● Intake air leaks

● Exhaust gas leaks A
● Incorrect fuel pressure

● Lack of fuel
EC
● Injectors

● Incorrect PCV hose connection

● PCV valve
C
● Mass air flow sensor

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1minute under no load. D
6. Let engine idle for 1 minute.
7. Increase the engine speed up to 4,000 to 5,000 rpm and keep it for 10 seconds.
8. Fully release accelerator pedal and then let engine idle for about 1 minute. E
9. Repeat steps from 4 to 8.
10. Select “MODE 3” with GST and make sure that no DTC is displayed.
If the DTC is displayed, go to EC-397, "Diagnostic Procedure" . F

EC-393
 DTC P1279, P1289 A/F SENSOR 1

Wiring Diagram EBS011QQ

BANK 1

EC-394
 DTC P1279, P1289 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
16 LG/B Approximately 3.1V C
[Engine is running]
35 L/W Approximately 2.6V
A/F sensor 1 (Bank 1) ● Warm-up condition
56 W/L Approximately 2.3V
● Idle speed
75 P/B Approximately 2.3V
D

EC-395
 DTC P1279, P1289 A/F SENSOR 1

BANK 2

EC-396
 DTC P1279, P1289 A/F SENSOR 1

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
57 L Approximately 2.6V C
[Engine is running]
58 W Approximately 2.3V
A/F sensor 1 (Bank 2) ● Warm-up condition
76 LG Approximately 3.1V
● Idle speed
77 P Approximately 2.3V
D

Diagnostic Procedure EBS011QR

1. CHECK GROUND CONNECTIONS E

1. Turn ignition switch OFF.

2. Loosen and retighten engine ground screws. F

>> GO TO 2.
G

PBIB1071E I

2. RETIGHTEN A/F SENSOR 1

J
Loosen and retighten the A/F sensor 1.

M
PBIB1908E

Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)

>> GO TO 3.

EC-397
 DTC P1279, P1289 A/F SENSOR 1

3. CHECK EXHAUST GAS LEAK

1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before three way catalyst 1.

PBIB1922E

OK or NG
OK >> GO TO 4.
NG >> Repair or replace.

4. CHECK FOR INTAKE AIR LEAK

Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace.

EC-398
 DTC P1279, P1289 A/F SENSOR 1

5. CLEAR THE SELF-LEARNING DATA A

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
EC
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”
or “START”.
C
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P172, P0174 or P0175 detected?
Is it difficult to start engine?
D

SEF968Y

F
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF. G
3. Disconnect mass air flow sensor harness connector.
4. Restart engine and let it idle for at least 3 seconds.
H
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
I
7. Erase the DTC memory. Refer to EC-43, "HOW TO ERASE
EMISSION-RELATED DIAGNOSTIC INFORMATION" .
8. Make sure DTC P0000 is displayed. J
9. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected? PBIB1077E

Is it difficult to start engine?

K
Yes or No
Yes >> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to EC-180 or EC-189 .
No >> GO TO 6.
L

EC-399
 DTC P1279, P1289 A/F SENSOR 1

6. CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect A/F sensor 1 harness connector.

PBIB1911E

3. Turn ignition switch ON.

4. Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.

PBIB1683E

7. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● IPDM E/R harness connector E7
● 15A fuse
● Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

EC-400
 DTC P1279, P1289 A/F SENSOR 1

8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT A
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals. EC
Refer to Wiring Diagram.
Bank 1 Bank 2
C
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
1 16 1 76
2 75 2 77 D
5 35 5 57
6 56 6 58
E
Continuity should exist.
4. Check harness continuity between the following terminals and ground. F
Refer to Wiring Diagram.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal G
1 16 1 76
2 75 2 77
H
5 35 5 57
6 56 6 58
I
Continuity should not exist.
5. Also check harness for short to power.
OK or NG J
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
K
9. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Refer to EC-257, "Component Inspection" .
L
OK or NG
OK >> GO TO 10.
NG >> Replace A/F sensor 1. M
10. CHECK MASS AIR FLOW SENSOR
Refer to EC-143, "Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace mass air flow sensor.

11. CHECK PCV VALVE

Refer to EC-514, "POSITIVE CRANKCASE VENTILATION" .
OK or NG
OK >> GO TO 12.
NG >> Repair or replace PCV valve.

EC-401
 DTC P1279, P1289 A/F SENSOR 1

12. CHECK INTERMITTENT INCIDENT

Perform EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace A/F sensor 1.
NG >> Repair or replace.
Removal and Installation EBS011QS

AIR FUEL RATIO (A/F) SENSOR 1

Refer to EM-23, "EXHAUST MANIFOLD AND THREE WAY CATALYST"

EC-402
 DTC P1564 ASCD STEERING SWITCH

DTC P1564 ASCD STEERING SWITCH PFP:25551

A
Component Description EBS010HN

ASCD steering switch has variant values of electrical resistance for

each button. ECM reads voltage variation of switch, and determines EC
which button is operated.
Refer to EC-516, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" for the ASCD function.
C

PBIB1088E

E
CONSULT-II Reference Value in Data Monitor Mode EBS010HO

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION F
CRUISE switch: Pressed ON
MAIN SW ● Ignition switch: ON
CRUISE switch: Released OFF
G
CANCEL switch: Pressed ON
CANCEL SW ● Ignition switch: ON
CANCEL switch: Released OFF
ACCEL/RES switch: Pressed ON H
RESUME/ACC SW ● Ignition switch: ON
ACCEL/RES switch: Released OFF
COAST/SET switch: Pressed ON
SET SW ● Ignition switch: ON I
COAST/SET switch: Released OFF

On Board Diagnosis Logic EBS010HP

This self-diagnosis has the one trip detection logic. J

The MI will not light up for this diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to K
EC-247.
Trouble Diagnosis
DTC No. DTC Detecting Condition Possible Cause
Name L
● An excessively high voltage signal from the ASCD
steering switch is sent to ECM. ● Harness or connectors
P1564 ASCD steering ● ECM detects that input signal from the ASCD (The switch circuit is open or shorted.) M
1564 switch steering switch is out of the specified range. ● ASCD steering switch
● ECM detects that the ASCD steering switch is ● ECM
stuck ON.

EC-403
 DTC P1564 ASCD STEERING SWITCH

DTC Confirmation Procedure EBS010HQ

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 10 seconds.
4. Press “CRUISE” switch for at least 10 seconds, then release it and wait at least 10 seconds.
5. Press “ACCEL/RES” switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Press “COAST/SET” switch for at least 10 seconds, then release it and wait at least 10 seconds.
7. Press “CANCEL” switch for at least 10 seconds, then release it and wait at least 10 seconds.
8. If DTC is detected, go to EC-407, "Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-404
 DTC P1564 ASCD STEERING SWITCH

Wiring Diagram EBS010HR

EC

TBWT0562E

EC-405
 DTC P1564 ASCD STEERING SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Sensor ground
(Mass air flow sensor / IAT [Engine is running]
sensor / ECT sensor /
67 B/W ● Warm-up condition Approximately 0V
Power steering pressure
sensor / ASCD steering ● Idle speed
switch)
[Ignition switch: ON]
Approximately 4V
● ASCD steering switch: OFF
[Ignition switch: ON]
Approximately 0V
● CRUISE switch: Pressed
[Ignition switch: ON]
99 G/Y ASCD steering switch Approximately 1V
● CANCEL switch: Pressed
[Ignition switch: ON]
Approximately 2V
● COAST/SET switch: Pressed
[Ignition switch: ON]
Approximately 3V
● ACCEL/RESUME switch: Pressed

EC-406
 DTC P1564 ASCD STEERING SWITCH

Diagnostic Procedure EBS010HS

1. CHECK ASCD STEERING SWITCH CIRCUIT A

With CONSULT-II
1. Turn ignition switch ON. EC
2. Select “MAIN SW”, “RESUME/ACC SW”, “SET SW” and “CANCEL SW” in “DATA MONITOR” mode with
CONSULT-II.
3. Check each item indication under the following conditions. C

Switch Monitor item Condition Indication

Pressed ON D
CRUISE MAIN SW
Released OFF
Pressed ON
COAST/SET SET SW E
Released OFF
Pressed ON
ACCEL/RES RESUME/ACC SW
Released OFF F
SEC006D
Pressed ON
CANCEL CANCEL SW
Released OFF
G
Without CONSULT-II
1. Turn ignition switch ON.
H
2. Check voltage between ECM terminal 99 and ground with press-
ing each button.
Switch Condition Voltage [V] I
Pressed Approx. 0
CRUISE SW
Released Approx. 4
J
Pressed Approx. 2
COAST/SET SW
Released Approx. 4
Pressed Approx. 3 K
ACCEL/RES SW PBIB0311E
Released Approx. 4
Pressed Approx. 1
CANCEL SW L
Released Approx. 4

OK or NG
OK >> GO TO 7. M
NG >> GO TO 2.

2. CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect combination switch harness connector M203.
4. Check harness continuity between combination switch terminal
15 and ECM terminal 67. Refer to Wiring Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
PBIB1088E

EC-407
 DTC P1564 ASCD STEERING SWITCH

3. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors M72, F102
● Combination switch (spiral cable)
● Harness for open and short between ECM and combination switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 99 and combination switch terminal 14.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors M72, F102
● Combination switch (spiral cable)
● Harness for open and short between ECM and combination switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

6. CHECK ASCD STEERING SWITCH

Refer to EC-409, "Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace steering wheel.

7. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-408
 DTC P1564 ASCD STEERING SWITCH

Component Inspection EBS010HT

ASCD STEERING SWITCH A

1. Disconnect combination switch (spiral cable).
2. Check continuity between combination switch (spiral cable) ter-
minals 14 and 15 with pushing each switch. EC

Switch Condition Resistance [Ω]

Pressed Approx. 0 C
CRUISE SW
Released Approx. 4,000
Pressed Approx. 660
COAST/SET SW D
Released Approx. 4,000
Pressed Approx. 1,480
ACCEL/RES SW PBIB0967E
Released Approx. 4,000
E
Pressed Approx. 250
CANCEL SW
Released Approx. 4,000
F

EC-409
 DTC P1572 ASCD BRAKE SWITCH

DTC P1572 ASCD BRAKE SWITCH PFP:25320

Component Description EBS010HU

When the brake pedal is depressed, ASCD brake switch is turned

OFF and stop lamp switch is turned ON. ECM detects the state of
the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-516, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" for the ASCD function.

PBIB1282E

CONSULT-II Reference Value in Data Monitor Mode EBS011QT

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
Clutch pedal and brake pedal: Fully
ON
released
BRAKE SW1 ● Ignition switch: ON
Clutch pedal and/or brake pedal:
OFF
Slightly depressed
Brake pedal: Fully released OFF
BRAKE SW2 ● Ignition switch: ON
Brake pedal: Slightly depressed ON

On Board Diagnosis Logic EBS010HW

This self-diagnosis has the one trip detection logic.

The MI will not light up for this diagnosis.
NOTE:
If DTC P 1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to
EC-247
Trouble Diagnosis
DTC No. DTC Detecting Condition Possible Cause
Name
● Harness or connectors
(The stop lamp switch circuit is open or
shorted.)
● Harness or connectors
(The ASCD brake switch circuit is open or
shorted.)
When the vehicle speed is above 30 km/h (19
P1572 MPH), ON signals from the stop lamp switch ● Stop lamp switch
ASCD brake switch
1572 and the ASCD brake switch are sent to the ● ASCD brake switch
ECM at the same time.
● Incorrect stop lamp switch installation
● Incorrect ASCD brake switch installation
● ASCD clutch switch
● Incorrect ASCD clutch switch installation
● ECM

EC-410
 DTC P1572 ASCD BRAKE SWITCH

DTC confirmation Procedure EBS010HX

A
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at EC
least 10 seconds before conducting the next test.
TESTING CONDITION:
Steps 3 and 4 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a C
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine (ESP switch OFF). D
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle for at least 5 consecutive seconds under the following condition.
E
VHCL SPEED SE More than 30 km/h (19 MPH)
Selector lever Suitable position
F
If DTC is detected, go to EC-415, "Diagnostic Procedure" .
If DTC is not detected, go to the following step.

4. Drive the vehicle for at least 5 consecutive seconds under the following condition. G

VHCL SPEED SE More than 30 km/h (19 MPH)

Selector lever Suitable position H
Depress the brake pedal for more than
Driving location five seconds so as not to come off from
the above-mentioned condition.
I
5. If DTC is detected, go to EC-415, "Diagnostic Procedure" .
WITH GST
J
Follow the procedure “WITH CONSULT-II” above.

EC-411
 DTC P1572 ASCD BRAKE SWITCH

Wiring Diagram (LHD Models) EBS011QU

TBWT0563E

EC-412
 DTC P1572 ASCD BRAKE SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: ON] C
Approximately 0V
● Brake pedal is fully released
101 L/OR Stop lamp switch
[Ignition switch: ON] BATTERY VOLTAGE
● Brake pedal is depressed (11 - 14V) D
[Ignition switch: ON]
● Brake pedal and/or clutch pedal are Approximately 0V
depressed E
108 B/R ASCD brake switch
[Ignition switch: ON]
BATTERY VOLTAGE
● Brake pedal and clutch pedal are fully (11 - 14V)
released F

EC-413
 DTC P1572 ASCD BRAKE SWITCH

Wiring Diagram (RHD Models) EBS011QV

TBWT0564E

EC-414
 DTC P1572 ASCD BRAKE SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: ON] C
Approximately 0V
● Brake pedal is fully released
101 L/OR Stop lamp switch
[Ignition switch: ON] BATTERY VOLTAGE
● Brake pedal is depressed (11 - 14V) D
[Ignition switch: ON]
● Brake pedal and/or clutch pedal are Approximately 0V
depressed E
108 B/R ASCD brake switch
[Ignition switch: ON]
BATTERY VOLTAGE
● Brake pedal and clutch pedal are fully (11 - 14V)
released F

Diagnostic Procedure EBS010HZ

1. CHECK OVERALL FUNCTION-I G

With CONSULT-II
1. Turn ignition switch ON. H
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II.
3. Check “BRAKE SW1” indication under the following conditions.
I
CONDITION INDICATION
When brake pedal and/or clutch pedal are depressed OFF
When brake pedal and clutch pedal are fully released ON J

SEC011D

L
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 108 and ground under the M
following conditions.
CONDITION VOLTAGE
When brake pedal and/or clutch pedal are depressed Approximately 0V
When brake pedal and clutch pedal are fully released Battery voltage

MBIB0061E

OK or NG
OK >> GO TO 2.
NG >> GO TO 3.

EC-415
 DTC P1572 ASCD BRAKE SWITCH

2. CHECK OVERALL FUNCTION-II

With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
CONDITION INDICATION
When brake pedal is released OFF
When brake pedal is depressed ON

SEC013D

Without CONSULT-II
Check voltage between ECM terminal 101 and ground under the fol-
lowing conditions.
CONDITION VOLTAGE
When brake pedal is released Approximately 0V
When brake pedal is depressed Battery voltage

OK or NG
OK >> GO TO 16.
NG >> GO TO 11.
MBIB0060E

3. CHECK ASCD BRAKE SWITCH CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector.
3. Turn ignition switch ON.

PBIB1282E

4. Check voltage between ASCD clutch switch terminal 1 and

ground with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 8.
NG >> GO TO 4.

PBIB0799E

EC-416
 DTC P1572 ASCD BRAKE SWITCH

4. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT A

1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON. EC

PBIB1282E
E
4. Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-II or tester.
F
Voltage: Battery voltage
OK or NG
OK >> GO TO 6. G
NG >> GO TO 5.

H
PBIB0857E

5. DETECT MALFUNCTIONING PART I

Check the following.

● Fuse block (J/B) connector E101 J
● 10A fuse
● Harness for open or short between ASCD brake switch and fuse
K
>> Repair open circuit or short to ground or short to power in harness or connectors.

6. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT L

1. Turn ignition switch OFF.

2. Check harness continuity between ASCD brake switch terminal 2 and ASCD clutch switch terminal 1. M
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

7. CHECK ASCD BRAKE SWITCH

Refer to EC-420, "Component Inspection"
OK or NG
OK >> GO TO 16.
NG >> Replace ASCD brake switch.

EC-417
 DTC P1572 ASCD BRAKE SWITCH

8. CHECK ASCD CLUTCH SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ASCD clutch switch terminal 2 and ECM terminal 108.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.

9. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E108, M15
● Harness connectors M72, F102
● Harness for open or short between ECM and ASCD clutch switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

10. CHECK ASCD CLUTCH SWITCH

Refer to EC-420, "Component Inspection" .
OK or NG
OK >> GO TO 16.
NG >> Replace ASCD clutch switch.

11. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.

PBIB1282E

3. Check voltage between stop lamp switch terminal 1 and ground

with CONSULT -II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.

PBIB0117E

EC-418
 DTC P1572 ASCD BRAKE SWITCH

12. DETECT MALFUNCTIONING PART A

Check the following.
● Fuse block (J/B) connector E101
● 10A fuse EC
● Harness for open or short between stop lamp switch and fuse

C
>> Repair open circuit or short to ground or short to power in harness or connectors.

13. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
D
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram. E
Continuity should exist.
3. Also check harness for short to ground and short to power. F
OK or NG
OK >> GO TO 15.
NG >> GO TO 14. G
14. DETECT MALFUNCTIONING PART
Check the following. H
● Harness connectors E108, M15
● Harness connectors M72, F102
● Harness for open or short between ECM and stop lamp switch I

>> Repair open circuit or short to ground or short to power in harness or connectors.
J
15. CHECK STOP LAMP SWITCH
Refer to EC-420, "Component Inspection" K
OK or NG
OK >> GO TO 16.
NG >> Replace stop lamp switch. L

16. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . M

>> INSPECTION END

EC-419
 DTC P1572 ASCD BRAKE SWITCH

Component Inspection EBS010I0

ASCD BRAKE SWITCH

1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check harness continuity between ASCD brake switch terminals
1 and 2 under the following conditions.
Condition Continuity
When brake pedal is fully released. Should exist.
When brake pedal is depressed. Should not exist.

If NG, adjust ASCD brake switch installation, refer to BR-6,

"BRAKE PEDAL" , and perform step 3 again.

SEC023D

ASCD CLUTCH SWITCH

1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector.
3. Check harness continuity between ASCD clutch switch termi-
nals 1 and 2 under the following conditions.
Condition Continuity
When clutch pedal is fully released. Should exist.
When clutch pedal is depressed. Should not exist.

If NG, adjust ASCD clutch switch installation, refer to CL-5,

"CLUTCH PEDAL" , and perform step 3 again.

SEC024D

STOP LAMP SWITCH

1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals 1
and 2 under the following conditions.
Condition Continuity
When brake pedal is fully released. Should not exist.
When brake pedal is depressed. Should exist.

If NG, adjust stop lamp switch installation, refer to BR-6,

"BRAKE PEDAL" , and perform step 3 again.

PBIB0118E

EC-420
 DTC P1574 ASCD VEHICLE SPEED SENSOR

DTC P1574 ASCD VEHICLE SPEED SENSOR PFP:31036

A
Component Description EBS010I1

The ECM receives vehicle speed sensor signal from “unified meter and A/C amp.” via CAN communication
line. The ECM uses this signal for ASCD control. Refer to EC-516, "AUTOMATIC SPEED CONTROL DEVICE EC
(ASCD)" for ASCD functions.
On Board Diagnosis Logic EBS010I2

C
This self-diagnosis has the one trip detection logic.
The MI will not light up for this diagnosis.
NOTE:
● If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC D
U1000, U1001. Refer to EC-121, "DTC U1000, U1001 CAN COMMUNICATION LINE" .
● If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to EC-240, "DTC P0500 VSS" E
● If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-247, "DTC P0605 ECM"
F
Trouble Diagnosis
DTC No. DTC Detecting Condition Possible Cause
Name
● Harness or connectors
(The CAN communication line is open or G
shorted.)
P1574 ASCD vehicle speed ECM detects a difference between two vehicle ● Unified meter and A/C amp.
1574 sensor speed signals is out of the specified range. H
● ESP/TCS/ABS control unit
● Wheel sensor
● ECM
I
DTC Confirmation Procedure EBS010I3

CAUTION:
Always drive vehicle at a safe speed. J
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test. K
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle. L
WITH CONSULT-II
1. Start engine (ESP switch OFF).
2. Select “DATA MONITOR” mode with CONSULT-II. M
3. Drive the vehicle at more than 40 km/h (25 MPH).
4. If DTC is detected, go to EC-422, "Diagnostic Procedure" .

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-421
 DTC P1574 ASCD VEHICLE SPEED SENSOR

Diagnostic Procedure EBS010I4

1. CHECK DTC WITH ESP/TCS/ABS CONTROL UNIT

Refer to BRC-11, "TROUBLE DIAGNOSIS" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.

2. CHECK DTC WITH UNIFIED METER AND A/C AMP.

Refer to DI-4, "COMBINATION METERS" .

>> INSPECTION END

EC-422
 DTC P1706 PNP SWITCH

DTC P1706 PNP SWITCH PFP:32006

A
Component Description EBS010I5

When the gear position is Neutral, park/neutral position (PNP) switch is ON.
ECM detects the position because the continuity of the line (the ON signal) exists. EC
CONSULT-II Reference Value in Data Monitor Mode EBS010I6

Specification data are reference values.

C
MONITOR ITEM CONDITION SPECIFICATION
Shift lever: Neutral ON
P/N POSI SW ● Ignition switch: ON
Shift lever: Except above OFF D

On Board Diagnosis Logic EBS010I7

E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
The signal of the park/neutral position (PNP) [The park/neutral position (PNP) switch
P1706 Park/neutral position
switch is not changed in the process of engine circuit is open or shorted.]
F
1706 switch
starting and driving.
● Park/neutral position (PNP) switch

DTC Confirmation Procedure EBS010I8 G

CAUTION:
Always drive vehicle at a safe speed.
NOTE: H
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
I
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
J
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.
Position (Selector lever) Known-good signal K
Neutral position ON
Except the above position OFF
L
If NG, go to EC-426, "Diagnostic Procedure" .
If OK, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-II. SEF212Y
M
4. Start engine and warm it up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive sec-
onds.
ENG SPEED 1,400 - 6375 rpm
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL 2.0 - 31.8 msec
VHCL SPEED SE More than 64 km/h (40 MPH)
Selector lever Suitable position
6. If 1st trip DTC is detected, go to EC-426, "Diagnostic Procedure"
. SEF213Y

EC-423
 DTC P1706 PNP SWITCH

Overall Function Check EBS010I9

Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.
WITH GST
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 102 (PNP switch signal)
and ground under the following conditions.
Condition (Gear position) Voltage V (Known good data)
Neutral position Approx. 0
BATTERY VOLTAGE
Except the above position
(11 - 14V)
3. If NG, go to EC-426, "Diagnostic Procedure" .

MBIB0043E

EC-424
 DTC P1706 PNP SWITCH

Wiring Diagram EBS011QW

EC

TBWT0565E

EC-425
 DTC P1706 PNP SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: ON]
Approximately 0V
● Shift lever: Neutral
102 BR/Y PNP switch
[Ignition switch: ON] BATTERY VOLTAGE
● Except the above gear position (11 - 14V)

Diagnostic Procedure EBS010IB

1. CHECK PNP SWITCH GROUND CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Check harness continuity between PNP switch terminal 2 and ground.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 3
NG >> GO TO 2.

2. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors F103, F151
● Harness connector E12, F3
● Harness for open or short between PNP switch and ground

>> Repair open circuit or short to power in harness or connectors.

3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT

1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 102 and PNP switch terminal 1.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK PNP SWITCH

Refer to MT-12, "NEUTRAL POSITION SWITCH" .
OK or NG
OK >> GO TO 5.
NG >> Replace PNP switch.

EC-426
 DTC P1706 PNP SWITCH

5. CHECK INTERMITTENT INCIDENT A

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END EC

EC-427
 DTC P1805 BRAKE SWITCH

DTC P1805 BRAKE SWITCH PFP:25320

Description EBS010IC

Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
CONSULT-II Reference Value in Data Monitor Mode EBS010ID

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
Brake pedal: Fully released OFF
BRAKE SW ● Ignition switch: ON
Brake pedal: Slightly depressed ON

On Board Diagnosis Logic EBS010IE

The MI will not light up for this diagnosis.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
● Harness or connectors
P1805 A brake switch signal is not sent to ECM for an (Stop lamp switch circuit is open or
Brake switch shorted.)
1805 extremely long time while the vehicle is driving.
● Stop lamp switch

FALI-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
Engine operating condition in fail-safe mode
ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration

DTC Confirmation Procedure EBS010IF

WITH CONSULT-II
1. Turn ignition switch ON.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the DTC with CONSULT-II.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. If 1st trip DTC is detected, go to EC-430, "Diagnostic Procedure"
.

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-428
 DTC P1805 BRAKE SWITCH

Wiring Diagram EBS010IG

EC

TBWT0566E

EC-429
 DTC P1805 BRAKE SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: ON]
Approximately 0V
● Brake pedal is fully released
101 L/OR Stop lamp switch
[Ignition switch: ON] BATTERY VOLTAGE
● Brake pedal is depressed (11 - 14V)

Diagnostic Procedure EBS010IH

1. CHECK STOP LAMP SWITCH CIRCUIT

1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
Brake pedal Stop lamp
Fully released Not illuminated
Depressed Illuminated
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.

2. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Disconnect stop lamp switch harness connector.

PBIB1282E

2. Check voltage between stop lamp switch terminal 1 and ground

with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.

PBIB0117E

EC-430
 DTC P1805 BRAKE SWITCH

3. DETECT MALFUNCTIONING PART A

Check the following.
● 10A fuse
● Fuse block (J/B) connector E101 EC
● Harness for open and short between stop lamp switch and fuse

C
>> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
D
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2. E
Refer to Wiring Diagram.
Continuity should exist.
F
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6. G
NG >> GO TO 5.

5. DETECT MALFUNCTIONING PART H

Check the following.
● Harness connectors E108, M15
● Harness connectors M72, F102 I
● Harness for open or short between ECM and stop lamp switch
J
>> Repair open circuit or short to ground or short to power in harness or connectors.

6. CHECK STOP LAMP SWITCH K

Refer to EC-432, "Component Inspection" .
OK or NG
OK >> GO TO 7. L
NG >> Replace stop lamp switch.

7. CHECK INTERMITTENT INCIDENT M

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-431
 DTC P1805 BRAKE SWITCH

Component Inspection EBS010II

STOP LAMP SWITCH

1. Disconnect stop lamp switch harness connector.

PBIB1282E

2. Check continuity between stop lamp switch terminals 1 and 2

under the following conditions.
Conditions Continuity
Brake pedal fully released Should not exist.
Brake pedal depressed Should exist.
3. If NG, adjust stop lamp switch installation, refer to BR-6,
"BRAKE PEDAL" , and perform step 2 again.

PBIB0118E

EC-432
 DTC P2122, P2123 APP SENSOR

DTC P2122, P2123 APP SENSOR PFP:18002

A
Component Description EBS010IJ

The accelerator pedal position sensor is installed on the upper end

of the accelerator pedal assembly. The sensor detects the accelera- EC
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM. C
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from D
these signals and controls the throttle control motor based on these
signals.
PBIB1741E
Idle position of the accelerator pedal is determined by the ECM
E
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor Mode EBS010IK
F
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
G
● Ignition switch: ON Accelerator pedal: Fully released 0.5 - 1.0V
ACCEL SEN1
(Engine stopped) Accelerator pedal: Fully depressed 4.0 - 4.8V

● Ignition switch: ON Accelerator pedal: Fully released 0.3 - 1.2V H

ACCEL SEN2*
(Engine stopped) Accelerator pedal: Fully depressed 3.9 - 4.8V

● Ignition switch: ON Accelerator pedal: Fully released ON

CLSD THL POS
(Engine stopped) Accelerator pedal: Slightly depressed OFF I
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differ from ECM terminal voltage.

On Board Diagnosis Logic EBS010IL J

These self-diagnoses have the one trip detection logic.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause K
Accelerator pedal posi-
P2122 An excessively low voltage from the APP sen- ● Harness or connectors
tion sensor 1 circuit low
2122 sor 1 is sent to ECM. (The APP sensor 1 circuit is open or
input
shorted.) L
Accelerator pedal posi-
P2123 An excessively high voltage from the APP sen- ● Accelerator pedal position sensor
tion sensor 1 circuit high
2123 sor 1 is sent to ECM. (Accelerator pedal position sensor 1)
input
M
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
Engine operating condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

EC-433
 DTC P2122, P2123 APP SENSOR

DTC Confirmation Procedure EBS010IM

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-436, "Diagnostic Procedure" .

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-434
 DTC P2122, P2123 APP SENSOR

Wiring Diagram EBS010IN

EC

TBWT0370E

EC-435
 DTC P2122, P2123 APP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
Sensor ground
82 G/Y ● Warm-up condition Approximately 0V
(APP sensor 1)
● Idle speed
[Engine is running]
Sensor ground
83 G/R ● Warm-up condition Approximately 0V
(APP sensor 2)
● Idle speed
Sensor power supply
90 LG [Ignition switch: ON] Approximately 5V
(APP sensor 1)
Sensor power supply
91 B/OR [Ignition switch: ON] Approximately 5V
(APP sensor 2)
[Ignition switch: ON]
● Engine stopped 0.15 - 0.60V
Accelerator pedal position ● Accelerator pedal fully released
98 G/B
sensor 2 [Ignition switch: ON]
● Engine stopped 1.95 - 2.40V
● Accelerator pedal fully depressed
[Ignition switch: ON]
● Engine stopped 0.5 - 1.0V
Accelerator pedal position ● Accelerator pedal fully released
106 G/OR
sensor 1 [Ignition switch: ON]
● Engine stopped 3.9 - 4.7V
● Accelerator pedal fully depressed

Diagnostic Procedure EBS010IO

1. RETIGHTEN GROUND SCREWS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

EC-436
 DTC P2122, P2123 APP SENSOR

2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT A

1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON. EC

D
PBIB1080E

3. Check voltage between APP sensor terminal 6 and ground with E

CONSULT-II or tester.
Voltage: Approximately 5V
F
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
G

PBIB0914E H

3. DETECT MALFUNCTIONING PART

Check the following. I
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor
J

>> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT K

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. L
3. Check harness continuity between APP sensor terminal 3 and ECM terminal 82.
Refer to Wiring Diagram.
M
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

EC-437
 DTC P2122, P2123 APP SENSOR

6. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 106 and APP sensor terminal 5.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK APP SENSOR

Refer to EC-438, "Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace accelerator pedal assembly.

9. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS010IP

ACCELERATOR PEDAL POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 106 (APP sensor 1 sig-
nal), 98 (APP sensor 2 signal) and engine ground under the fol-
lowing conditions.
Terminal Accelerator pedal Voltage
106 Fully released 0.5 - 1.0V
(Accelerator pedal position
sensor 1) Fully depressed 3.9 - 4.7V

98 Fully released 0.15 - 0.60V

(Accelerator pedal position
sensor 2) Fully depressed 1.95 - 2.40V
MBIB0023E

4. If NG, replace accelerator pedal assembly and go to next step.

5. Perform EC-27, "Accelerator Pedal Released Position Learning" .
6. Perform EC-27, "Throttle Valve Closed Position Learning" .
7. Perform EC-27, "Idle Air Volume Learning" .
Removal and Installation EBS010IQ

ACCELERATOR PEDAL
Refer to ACC-3, "ACCELERATOR CONTROL SYSTEM" .

EC-438
 DTC P2127, P2128 APP SENSOR

DTC P2127, P2128 APP SENSOR PFP:18002

A
Component Description EBS010IR

The accelerator pedal position sensor is installed on the upper end

of the accelerator pedal assembly. The sensor detects the accelera- EC
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM. C
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from D
these signals and controls the throttle control motor based on these
signals.
PBIB1741E
Idle position of the accelerator pedal is determined by the ECM
E
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor Mode EBS010IS
F
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
G
● Ignition switch: ON Accelerator pedal: Fully released 0.5 - 1.0V
ACCEL SEN1
(Engine stopped) Accelerator pedal: Fully depressed 4.0 - 4.8V

● Ignition switch: ON Accelerator pedal: Fully released 0.3 - 1.2V H

ACCEL SEN2*
(Engine stopped) Accelerator pedal: Fully depressed 3.9 - 4.8V

● Ignition switch: ON Accelerator pedal: Fully released ON

CLSD THL POS
(Engine stopped) Accelerator pedal: Slightly depressed OFF I
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differ from ECM terminal voltage.

On Board Diagnosis Logic EBS010IT J

These self-diagnoses have the one trip detection logic.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause K
Accelerator pedal posi-
P2127 An excessively low voltage from the APP sen- ● Harness or connectors
tion sensor 2 circuit low
2127 sor 2 is sent to ECM. (The APP sensor 2 circuit is open or
input
shorted.) L
Accelerator pedal posi-
P2128 An excessively high voltage from the APP sen- ● Accelerator pedal position sensor
tion sensor 2 circuit high
2128 sor 2 is sent to ECM. (Accelerator pedal position sensor 2)
input
M
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
Engine operating condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

EC-439
 DTC P2127, P2128 APP SENSOR

DTC Confirmation Procedure EBS010IU

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-442, "Diagnostic Procedure" .

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-440
 DTC P2127, P2128 APP SENSOR

Wiring Diagram EBS010IV

EC

TBWT0371E

EC-441
 DTC P2127, P2128 APP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
Sensor ground
82 G/Y ● Warm-up condition Approximately 0V
(APP sensor 1)
● Idle speed
[Engine is running]
Sensor ground
83 G/R ● Warm-up condition Approximately 0V
(APP sensor 2)
● Idle speed
Sensor power supply
90 LG [Ignition switch: ON] Approximately 5V
(APP sensor 1)
Sensor power supply
91 B/OR [Ignition switch: ON] Approximately 5V
(APP sensor 2)
[Ignition switch: ON]
● Engine stopped 0.15 - 0.60V
Accelerator pedal position ● Accelerator pedal fully released
98 G/B
sensor 2 [Ignition switch: ON]
● Engine stopped 1.95 - 2.40V
● Accelerator pedal fully depressed
[Ignition switch: ON]
● Engine stopped 0.5 - 1.0V
Accelerator pedal position ● Accelerator pedal fully released
106 G/OR
sensor 1 [Ignition switch: ON]
● Engine stopped 3.9 - 4.7V
● Accelerator pedal fully depressed

Diagnostic Procedure EBS010IW

1. RETIGHTEN GROUND SCREWS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

EC-442
 DTC P2127, P2128 APP SENSOR

2. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT A

1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON. EC

D
PBIB1080E

3. Check voltage between APP sensor terminal 4 and ground with E

CONSULT-II or tester.
Voltage: Approximately 5V
F
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
G

PBIB0915E H

3. DETECT MALFUNCTIONING PART

Check the following. I
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor
J

>> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK APP SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT K

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. L
3. Check harness continuity between APP sensor terminal 1 and ECM terminal 83.
Refer to Wiring Diagram.
M
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

EC-443
 DTC P2127, P2128 APP SENSOR

6. CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 98 and APP sensor terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK APP SENSOR

Refer to EC-444, "Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace accelerator pedal assembly.

9. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS010IX

ACCELERATOR PEDAL POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 106 (APP sensor 1 sig-
nal), 98 (APP sensor 2 signal) and engine ground under the fol-
lowing conditions.
Terminal Accelerator pedal Voltage
106 Fully released 0.5 - 1.0V
(Accelerator pedal position
sensor 1) Fully depressed 3.9 - 4.7V

98 Fully released 0.15 - 0.60V

(Accelerator pedal position
sensor 2) Fully depressed 1.95 - 2.40V
MBIB0023E

4. If NG, replace accelerator pedal assembly and go to next step.

5. Perform EC-27, "Accelerator Pedal Released Position Learning" .
6. Perform EC-27, "Throttle Valve Closed Position Learning" .
7. Perform EC-27, "Idle Air Volume Learning" .
Removal and Installation EBS010IY

ACCELERATOR PEDAL
Refer to ACC-3, "ACCELERATOR CONTROL SYSTEM" .

EC-444
 DTC P2135 TP SENSOR

DTC P2135 TP SENSOR PFP:16119

A
Component Description EBS010IZ

Electric throttle control actuator consists of throttle control motor,

throttle position sensor, etc. The throttle position sensor responds to EC
the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi- C
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig- D
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
PBIB0145E
tion.
E
CONSULT-II Reference Value in Data Monitor Mode EBS010J0

Specification data are reference values.

F
MONITOR ITEM CONDITION SPECIFICATION
● Ignition switch: ON Accelerator pedal: Fully released More than 0.36V
THRTL SEN1 (Engine stopped)
THRTL SEN2* Accelerator pedal: Fully depressed Less than 4.75V G
● Shift lever: 1st
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.

On Board Diagnosis Logic EBS010J1

H

This self-diagnosis has the one trip detection logic.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause I
● Harness or connector
Throttle position sensor Rationally incorrect voltage is sent to ECM (The TP sensor 1 and 2 circuit is open or
P2135 shorted.) J
circuit range/perfor- compared with the signals from TP sensor 1
2135
mance problem and TP sensor 2. ● Electric throttle control actuator
(TP sensor 1 and 2)
K
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
L
Engine operation condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. M
So, the acceleration will be poor.

EC-445
 DTC P2135 TP SENSOR

DTC Confirmation Procedure EBS010J2

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-448, "Diagnostic Procedure" .

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-446
 DTC P2135 TP SENSOR

Wiring Diagram EBS010J3

EC

TBWT0567E

EC-447
 DTC P2135 TP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
Sensor power supply
47 W/R [Ignition switch: ON] Approximately 5V
(Throttle position sensor)
[Ignition switch: ON]
● Engine stopped
More than 0.36V
● Shift lever: 1st
● Accelerator pedal fully released
50 G Throttle position sensor 1
[Ignition switch: ON]
● Engine stopped
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully depressed
[Engine is running]
Sensor ground
66 L ● Warm-up condition Approximately 0V
(Throttle position sensor)
● Idle speed
[Ignition switch: ON]
● Engine stopped
Less than 4.75V
● Shift lever: 1st
● Accelerator pedal fully released
69 Y Throttle position sensor 2
[Ignition switch: ON]
● Engine stopped
More than 0.36V
● Shift lever: 1st
● Accelerator pedal fully depressed

Diagnostic Procedure EBS010J4

1. RETIGHTEN GROUND SCREWS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

EC-448
 DTC P2135 TP SENSOR

2. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT A

1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
EC

D
PBIB1079E

3. Check voltage between electric throttle control actuator terminal E

1 and ground with CONSULT-II or tester.
Voltage: Approximately 5V
F
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors. G

PBIB0082E H

3. CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF. I
2. Disconnect ECM harness connector.
3. Check harness continuity between electric throttle control actuator terminal 5 and ECM terminal 66.
Refer to Wiring Diagram. J

Continuity should exist.

4. Also check harness for short to ground and short to power. K
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. L

4. CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
M
1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 4, ECM
terminal 69 and electric throttle control actuator terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK THROTTLE POSITION SENSOR

Refer to EC-450, "Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.

EC-449
 DTC P2135 TP SENSOR

6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Perform EC-27, "Idle Air Volume Learning" .

>> INSPECTION END

7. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

Component Inspection EBS010J5

THROTTLE POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Perform EC-27, "Throttle Valve Closed Position Learning" .
3. Turn ignition switch ON.
4. Set selector lever to 1st position.
5. Check voltage between ECM terminals 50 (TP sensor 1 signal),
69 (TP sensor 2 signal) and engine ground under the following
conditions.
Terminal Accelerator pedal Voltage

50 Fully released More than 0.36V

(Throttle position sensor 1) Fully depressed Less than 4.75V

69 Fully released Less than 4.75V

(Throttle position sensor 2) Fully depressed More than 0.36V
6. If NG, replace electric throttle control actuator and go to the next PBIB1658E

step.
7. Perform EC-27, "Throttle Valve Closed Position Learning" .
8. Perform EC-27, "Idle Air Volume Learning" .
Removal and Installation EBS010J6

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to EM-16, "INTAKE MANIFOLD COLLECTOR" .

EC-450
 DTC P2138 APP SENSOR

DTC P2138 APP SENSOR PFP:18002

A
Component Description EBS010J7

The accelerator pedal position sensor is installed on the upper end

of the accelerator pedal assembly. The sensor detects the accelera- EC
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM. C
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from D
these signals and controls the throttle control motor based on these
signals.
PBIB1741E
Idle position of the accelerator pedal is determined by the ECM
E
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor Mode EBS010J8
F
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
G
● Ignition switch: ON Accelerator pedal: Fully released 0.5 - 1.0V
ACCEL SEN1
(Engine stopped) Accelerator pedal: Fully depressed 4.0 - 4.8V

● Ignition switch: ON Accelerator pedal: Fully released 0.3 - 1.2V H

ACCEL SEN2*
(Engine stopped) Accelerator pedal: Fully depressed 3.9 - 4.8V

● Ignition switch: ON Accelerator pedal: Fully released ON

CLSD THL POS
(Engine stopped) Accelerator pedal: Slightly depressed OFF I
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differ from ECM terminal voltage.

On Board Diagnosis Logic EBS010J9 J

This self-diagnosis has the one trip detection logic.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause K
● Harness or connector
Accelerator pedal posi- (The APP sensor 1 and 2 circuit is open
Rationally incorrect voltage is sent to ECM
P2138 tion sensor circuit or shorted.)
compared with the signals from APP sensor 1 L
2138 range/performance
and APP sensor 2. ● Accelerator pedal position sensor 1 and
problem
2

M
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
Engine operating condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

EC-451
 DTC P2138 APP SENSOR

DTC Confirmation Procedure EBS010JA

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-454, "Diagnostic Procedure" .

SEF058Y

WITH GST
Follow the procedure “WITH CONSULT-II” above.

EC-452
 DTC P2138 APP SENSOR

Wiring Diagram EBS010JB

EC

TBWT0369E

EC-453
 DTC P2138 APP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
Sensor ground
82 G/Y ● Warm-up condition Approximately 0V
(APP sensor 1)
● Idle speed
[Engine is running]
Sensor ground
83 G/R ● Warm-up condition Approximately 0V
(APP sensor 2)
● Idle speed
Sensor power supply
90 LG [Ignition switch: ON] Approximately 5V
(APP sensor 1)
Sensor power supply
91 B/OR [Ignition switch: ON] Approximately 5V
(APP sensor 2)
[Ignition switch: ON]
● Engine stopped 0.15 - 0.60V
Accelerator pedal position ● Accelerator pedal fully released
98 G/B
sensor 2 [Ignition switch: ON]
● Engine stopped 1.95 - 2.40V
● Accelerator pedal fully depressed
[Ignition switch: ON]
● Engine stopped 0.5 - 1.0V
Accelerator pedal position ● Accelerator pedal fully released
106 G/OR
sensor 1 [Ignition switch: ON]
● Engine stopped 3.9 - 4.7V
● Accelerator pedal fully depressed

Diagnostic Procedure EBS010JC

1. RETIGHTEN GROUND SCREWS

1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.

>> GO TO 2.

PBIB1071E

EC-454
 DTC P2138 APP SENSOR

2. CHECK APP SENSOR POWER SUPPLY CIRCUIT A

1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON. EC

D
PBIB1080E

3. Check voltage between APP sensor terminals 4, 6 and ground E

with CONSULT-II or tester.
Voltage: Approximately 5V
F
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
G

PBIB0560E H

3. DETECT MALFUNCTIONING PART

Check the following. I
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor
J

>> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT K

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. L
3. Check harness continuity between APP sensor terminal 1 and ECM terminal 83, APP sensor terminal 3
and ECM terminal 82.
Refer to Wiring Diagram. M
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

5. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

EC-455
 DTC P2138 APP SENSOR

6. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 106 and APP sensor terminal 5, ECM terminal 98 and
APP sensor terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E11, F2
● Harness for open or short between ECM and accelerator pedal position sensor

>> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK APP SENSOR

Refer to EC-457, "Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace accelerator pedal assembly.

9. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

>> INSPECTION END

EC-456
 DTC P2138 APP SENSOR

Component Inspection EBS010JD

ACCELERATOR PEDAL POSITION SENSOR A

1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 106 (APP sensor 1 sig- EC
nal), 98 (APP sensor 2 signal) and engine ground under the fol-
lowing conditions.
C
Terminal Accelerator pedal Voltage
106 Fully released 0.5 - 1.0V
(Accelerator pedal position
sensor 1) Fully depressed 3.9 - 4.7V D
98 Fully released 0.15 - 0.60V
(Accelerator pedal position
sensor 2) Fully depressed 1.95 - 2.40V E
MBIB0023E

4. If NG, replace accelerator pedal assembly and go to next step.

5. Perform EC-27, "Accelerator Pedal Released Position Learning" .
F
6. Perform EC-27, "Throttle Valve Closed Position Learning" .
7. Perform EC-27, "Idle Air Volume Learning" .
Removal and Installation EBS010JE G
ACCELERATOR PEDAL
Refer to ACC-3, "ACCELERATOR CONTROL SYSTEM" .
H

EC-457
 IGNITION SIGNAL

IGNITION SIGNAL PFP:22448

Component Description EBS010JF

IGNITION COIL & POWER TRANSISTOR

The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns
on and off the ignition coil primary circuit. This on-off operation induces the proper high voltage in the coil sec-
ondary circuit.

PBIB1087E

EC-458
 IGNITION SIGNAL

Wiring Diagram (LHD Models) EBS010JG

EC

TBWT0568E

EC-459
 IGNITION SIGNAL

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
[Ignition switch: OFF]
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L
(Self shut-off)
[Ignition switch: OFF]
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
119 R/W BATTERY VOLTAGE
Power supply for ECM [Ignition switch: ON]
120 P (11 - 14V)

EC-460
IGNITION SIGNAL

EC

TBWT0394E

EC-461
 IGNITION SIGNAL

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.

0 - 0.2V
[Engine is running]
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.
60 PU/W Ignition signal No. 5 SEC986C
61 L/R Ignition signal No. 3
62 Y/R Ignition signal No. 1 0.1 - 0.4V

[Engine is running]
● Warm-up condition
● Engine speed is 2,500 rpm.

SEC987C

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-462
IGNITION SIGNAL

EC

TBWT0240E

EC-463
 IGNITION SIGNAL

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.

0 - 0.2V
[Engine is running]
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.
79 GY/R Ignition signal No. 6 SEC986C
80 GY Ignition signal No. 4
81 G/B Ignition signal No. 2 0.1 - 0.4V

[Engine is running]
● Warm-up condition
● Engine speed is 2,500 rpm.

SEC987C

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-464
 IGNITION SIGNAL

Wiring Diagram (RHD Models) EBS011QX

EC

TBWT0569E

EC-465
 IGNITION SIGNAL

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Engine is running]
[Ignition switch: OFF]
0 - 1.5V
● For a few seconds after turning ignition
ECM relay switch OFF
111 GY/L
(Self shut-off)
[Ignition switch: OFF]
BATTERY VOLTAGE
● A few seconds passed after turning ignition (11 - 14V)
switch OFF
119 Y BATTERY VOLTAGE
Power supply for ECM [Ignition switch: ON]
120 P (11 - 14V)

EC-466
IGNITION SIGNAL

EC

TBWT0396E

EC-467
 IGNITION SIGNAL

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.

0 - 0.2V
[Engine is running]
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.
60 PU/W Ignition signal No. 5 SEC986C
61 L/R Ignition signal No. 3
62 Y/R Ignition signal No. 1 0.1 - 0.4V

[Engine is running]
● Warm-up condition
● Engine speed is 2,500 rpm.

SEC987C

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

EC-468
IGNITION SIGNAL

EC

TBWT0397E

EC-469
 IGNITION SIGNAL

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.

0 - 0.2V
[Engine is running]
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.
79 GY/R Ignition signal No. 6 SEC986C
80 GY Ignition signal No. 4
81 G/B Ignition signal No. 2 0.1 - 0.4V

[Engine is running]
● Warm-up condition
● Engine speed is 2,500 rpm.

SEC987C

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure EBS010JH

1. CHECK ENGINE START

Turn ignition switch OFF, and restart engine.
Is engine running?
Yes or No
Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No >> GO TO 4.

2. CHECK OVERALL FUNCTION

With CONSULT-II
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
2. Make sure that each circuit produces a momentary engine
speed drop.
OK or NG
OK >> INSPECTION END
NG >> GO TO 10.

PBIB0133E

EC-470
 IGNITION SIGNAL

3. CHECK OVERALL FUNCTION A

Without CONSULT-II
1. Let engine idle.
EC
2. Read the voltage signal between ECM terminals 60, 61, 62, 79,
80, 81 and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as
shown below. C
NOTE:
The pulse cycle changes depending on rpm at idle.
D

E
PBIB1186E

SEC986C

OK or NG F
OK >> INSPECTION END
NG >> GO TO 10.
G
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. H
2. Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.
Voltage: Battery voltage I
OK or NG
OK >> GO TO 5.
NG >> Go to EC-110, "POWER SUPPLY CIRCUIT FOR ECM" J
.

K
MBIB0034E

EC-471
 IGNITION SIGNAL

5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Turn ignition switch ON.

PBIB1639E

4. Check voltage between condenser terminal 1 and ground with

CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.

PBIB0624E

6. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between IPDM E/R terminal 17 and condenser terminal 1.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 17.
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E12, F3
● Harness for open and short between IPDM E/R and condenser

>> Repair open circuit or short to ground or short to power in harness or connectors.

EC-472
 IGNITION SIGNAL

8. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT A

1. Turn ignition switch OFF.
2. Check harness continuity between condenser terminal 2 and engine ground.
Refer to Wiring Diagram. EC

Continuity should exist.

3. Also check harness for short to power. C
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to power in harness or connectors. D

9. CHECK CONDENSER
Refer to EC-475, "Component Inspection" . E
OK or NG
OK >> GO TO 10.
NG >> Replace condenser. F

10. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V

G
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil harness connector. H

K
PBIB1087E

4. Turn ignition switch ON.

5. Check voltage between ignition coil terminal 3 and ground with L
CONSULT-II or tester.
Voltage: Battery voltage
M
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.

PBIB0138E

11. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors F18, F201
● Harness for open or short between ignition coil and harness connector F3

>> Repair or replace harness or connectors.

EC-473
 IGNITION SIGNAL

12. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and engine ground.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.

13. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors F18, F201
● Harness for open or short between ignition coil and engine ground

>> Repair open circuit or short to power in harness or connectors.

14. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 60, 61, 62, 79, 80, 81 and ignition coil terminal 1.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 16.
NG >> GO TO 15.

15. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors F18, F201
● Harness for open or short between ignition coil and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

16. CHECK IGNITION COIL WITH POWER TRANSISTOR

Refer to EC-475, "Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ignition coil with power transistor.

17. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-27, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

EC-474
 IGNITION SIGNAL

Component Inspection EBS010JI

IGNITION COIL WITH POWER TRANSISTOR A

1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as follows. EC

Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]

1 and 2 Except 0 or ∞ C
1 and 3
Except 0
2 and 3
D

E
PBIB0847E

CONDENSER
1. Turn ignition switch OFF. F
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals 1 and 2.
G
Resistance Above 1 MΩ at 25°C (77°F)

PBIB0794E

J
Removal and Installation EBS010JJ

IGNITION COIL WITH POWER TRANSISTOR

Refer to EM-33, "IGNITION COIL" .
K

EC-475
 INJECTOR CIRCUIT

INJECTOR CIRCUIT PFP:16600

Component Description EBS010JK

The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the injector circuit, the coil in the injector is
energized. The energized coil pulls the needle valve back and allows
fuel to flow through the injector into the intake manifold. The amount
of fuel injected depends upon the injection pulse duration. Pulse
duration is the length of time the injector remains open. The ECM
controls the injection pulse duration based on engine fuel needs.

SEF375Z

CONSULT-II Reference Value in Data Monitor Mode EBS010JL

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
● Engine: After warming up Idle 2.5 - 3.5 msec
● Shift lever: Neutral
B/FUEL SCHDL
● Air conditioner switch: OFF 2,000 rpm 2.5 - 3.5 msec
● No-load
● Engine: After warming up Idle 2.0 - 3.0 msec
INJ PULSE-B1 ● Shift lever: Neutral
INJ PULSE-B2 ● Air conditioner switch: OFF 2,000 rpm 1.9 - 2.9 msec
● No-load

EC-476
 INJECTOR CIRCUIT

Wiring Diagram EBS010JM

EC

TBWT0570E

EC-477
 INJECTOR CIRCUIT

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
BATTERY VOLTAGE
[Engine is running] (11 - 14V)
● Warm-up condition
● Idle speed
NOTE:
The pulse cycle changes depending on rpm at
21 SB Injector No. 5 idle.
22 R/Y Injector No. 3
SEC984C
23 R/B Injector No. 1
40 LG Injector No. 6 BATTERY VOLTAGE
41 W/B Injector No. 4
(11 - 14V)
42 B/R Injector No. 2
[Engine is running]
● Warm-up condition
● Engine speed is 2,000 rpm.

SEC985C

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure EBS010JN

1. INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
Yes or No
Yes >> GO TO 2.
No >> GO TO 3.

EC-478
 INJECTOR CIRCUIT

2. CHECK OVERALL FUNCTION A

With CONSULT-II
1. Start engine.
EC
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
3. Make sure that each circuit produces a momentary engine
speed drop. C

E
PBIB0133E

Without CONSULT-II F
1. Start engine.
2. Listen to each injector operating sound.
Clicking noise should be heard. G

PBIB1725E

J
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.
K

EC-479
 INJECTOR CIRCUIT

3. CHECK INJECTOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition switch ON.

PBIB0997E

4. Check voltage between injector terminal 1 and ground with

CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.

PBIB0582E

4. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors M72, F102
● Harness connectors F33, F221
● Fuse block (J/B) connector M4
● 10A fuse
● Harness for open or short between injector and fuse

>> Repair harness or connectors.

5. CHECK INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between injector terminal 2 and ECM terminals 21, 22, 23, 40, 41, 42.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.

EC-480
 INJECTOR CIRCUIT

6. DETECT MALFUNCTIONING PART A

Check the following.
● Harness connectors F33, F221
● Harness for open or short between injector and ECM EC

>> Repair open circuit or short to ground or short to power in harness or connectors.
C
7. CHECK INJECTOR
Refer to EC-481, "Component Inspection" . D
OK or NG
OK >> GO TO 8.
NG >> Replace injector. E

8. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . F

>> INSPECTION END

G
Component Inspection EBS010JO

INJECTOR
1. Disconnect injector harness connector. H
2. Check resistance between terminals as shown in the figure.
Resistance: 13.5 - 17.5Ω [at 20°C (68°F)]
I

K
PBIB1727E

Removal and Installation EBS010JP

INJECTOR L
Refer to EM-36, "FUEL INJECTOR AND FUEL TUBE" .

EC-481
 FUEL PUMP CIRCUIT

FUEL PUMP CIRCUIT PFP:17042

Description EBS010JQ

SYSTEM DESCRIPTION
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Engine speed*
Camshaft position sensor (PHASE) Fuel pump control Fuel pump relay
Battery Battery voltage*
*: ECM determines the start signal status by the signals of engine speed and battery voltage.

The ECM activates the fuel pump for several seconds after the ignition switch is turned on to improve engine
startability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Stops.

COMPONENT DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.

PBIB1100E

CONSULT-II Reference Value in Data Monitor Mode EBS010JR

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
● For 1 second after turning ignition switch ON
ON
FUEL PUMP RLY ● Engine running or cranking
● Except above conditions OFF

EC-482
 FUEL PUMP CIRCUIT

Wiring Diagram EBS010JS

EC

TBWT0571E

EC-483
 FUEL PUMP CIRCUIT

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: ON]
● For 1 second after turning ignition switch ON 0 - 1.5V
[Engine is running]
113 LG/B Fuel pump relay
[Ignition switch: ON]
BATTERY VOLTAGE
● More than 1 second after turning ignition (11 - 14V)
switch ON.

Diagnostic Procedure EBS010JT

1. CHECK OVERALL FUNCTION

1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers.
Fuel pressure pulsation should be felt on the fuel feed hose
for 1 second after ignition switch is turned ON.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.

PBIB1644E

2. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 113 and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.

PBIB1187E

EC-484
 FUEL PUMP CIRCUIT

3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I A

Check voltage between IPDM E/R terminal 40 and ground with
CONSULT-II or tester.
Voltage: Battery voltage EC

OK or NG
OK >> GO TO 4.
C
NG >> GO TO 15.

D
PBIB1926E

4. DETECT MALFUNCTIONING PART E

Check the following.

● Harness connectors E108, M15
F
● Harness connectors M72, F102
● Harness for open or short between IPDM E/R and ECM
G
>> Repair harness or connectors.

5. CHECK CONDENSER POWER SUPPLY CIRCUIT-I H

1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
I
3. Disconnect condenser harness connector.
4. Turn ignition switch ON.
5. Check voltage between condenser terminal 1 and ground with J
CONSULT-II or tester.
Voltage: Battery voltage should exist for 1 sec-
ond after ignition switch is turned ON. K
6. Also check harness for short to ground and short to power.
OK or NG
L
OK >> GO TO 9.
NG >> GO TO 6.
PBIB0624E M
6. CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.

EC-485
 FUEL PUMP CIRCUIT

7. CHECK CONDENSER POWER SUPPLY CIRCUIT-II

1. Disconnect IPDM E/R harness connector E8.
2. Check harness continuity between IPDM E/R terminal 39 and condenser terminal 1.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 15.
NG >> GO TO 8.

8. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E107, B3
● Harness for open or short between IPDM E/R and condenser

>> Repair harness or connectors.

9. CHECK CONDENSER GROUND CIRCUIT

1. Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10

10. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors D102, B39
● Harness connectors B43, T1
● Harness for open or short between condenser and ground

>> Repair open circuit or short to power in harness or connectors.

11. CHECK CONDENSER

Refer to EC-487, "Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace condenser.

EC-486
 FUEL PUMP CIRCUIT

12. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT A
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector. EC
3. Check harness continuity between “fuel level sensor unit and
fuel pump” terminal 1 and harness connector B3 terminal 4, “fuel
level sensor unit and fuel pump” terminal 3 and ground. C
Refer to Wiring Diagram.
Continuity should exist.
D
4. Also check harness for short to ground and short to power.
OK or NG
PBIB1665E
OK >> GO TO 14. E
NG >> GO TO 13.

13. DETECT MALFUNCTIONING PART

F
Check the following.
● Harness connector B3
● Harness connectors D102, B39 G
● Harness connectors B43, T1
● Harness for open or short between fuel pump and harness connector B3
H
● Harness for open or short between fuel pump and ground

>> Repair open circuit or short to power in harness or connectors. I

14. CHECK FUEL PUMP
Refer to EC-487, "Component Inspection" . J
OK or NG
OK >> GO TO 15.
NG >> Replace fuel pump. K

15. CHECK INTERMITTENT INCIDENT

L
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R.
M
NG >> Repair or replace harness or connectors.
Component Inspection EBS010JU

FUEL PUMP
1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump”
terminals 1 and 3.
Resistance: Approximately 1.0Ω [at 25°C (77°F)]

SEC918C

EC-487
 FUEL PUMP CIRCUIT

CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals 1 and 2.
Resistance Above 1 MΩ at 25°C (77°F)

PBIB0794E

Removal and Installation EBS010JV

FUEL PUMP
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .

EC-488
 REFRIGERANT PRESSURE SENSOR

REFRIGERANT PRESSURE SENSOR PFP:92136

A
Component Description EBS010JW

The refrigerant pressure sensor is installed at the liquid tank of the

air conditioner system. The sensor uses an electrostatic volume EC
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
C

PBIB1091E

H
SEF099XA

EC-489
 REFRIGERANT PRESSURE SENSOR

Wiring Diagram EBS010JX

TBWT0572E

EC-490
 REFRIGERANT PRESSURE SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
B C
Sensor power supply
(LHD)
49 (Refrigerant pressure sen- [Ignition switch: ON] Approximately 5V
B/Y
sor)
(RHD)
D
Sensor ground
(Mass air flow sensor / IAT [Engine is running]
sensor / ECT sensor /
67 B/W ● Warm-up condition Approximately 0V
Power steering pressure E
sensor / ASCD steering ● Idle speed
switch)
[Engine is running]
F
● Warm-up condition
70 G/R Refrigerant pressure sensor 1.0 - 4.0V
● Both A/C switch and blower switch are ON.
(Compressor operates.)
G
Diagnostic Procedure EBS010JY

1. CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION

H
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower switch ON.
3. Check voltage between ECM terminal 70 and ground with CON- I
SULT-II or tester.
Voltage: 1.0 - 4.0V
J
OK or NG
OK >> INSPECTION END
NG >> GO TO 2. K

PBIB1188E
L

EC-491
 REFRIGERANT PRESSURE SENSOR

2. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT

1. Turn A/C switch and blower switch OFF.
2. Stop engine.
3. Disconnect refrigerant pressure sensor harness connector.
4. Turn ignition switch ON.

PBIB1091E

5. Check voltage between refrigerant pressure sensor terminal 1

and ground with CONSULT-II or tester.
Voltage: Approximately 5V
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.

PBIB0188E

3. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E251, E31
● Harness connectors E10, F1
● Harness for open or short between ECM and refrigerant pressure sensor

>> Repair harness or connectors.

4. CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.

EC-492
 REFRIGERANT PRESSURE SENSOR

5. DETECT MALFUNCTIONING PART A

Check the following.
● Harness connectors E251, E31
● Harness connectors E10, F1 EC
● Harness for open or short between ECM and refrigerant pressure sensor

C
>> Repair open circuit or short to ground or short to power in harness or connectors.

6. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
D
1. Check harness continuity between ECM terminal 70 and refrigerant pressure sensor terminal 2.
Refer to Wiring Diagram.
Continuity should exist. E

2. Also check harness for short to ground and short to power.

OK or NG F
OK >> GO TO 8.
NG >> GO TO 7.

7. DETECT MALFUNCTIONING PART G

Check the following.

● Harness connectors E251, E31 H
● Harness connectors E10, F1
● Harness for open or short between ECM and refrigerant pressure sensor
I
>> Repair open circuit or short to ground or short to power in harness or connectors.

8. CHECK INTERMITTENT INCIDENT J

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .

OK or NG K
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
L
Removal and Installation EBS010JZ

REFRIGERANT PRESSURE SENSOR

Refer to ATC-150, "Removal and Installation of Refrigerant Pressure Sensor" .
M

EC-493
 ELECTRICAL LOAD SIGNAL

ELECTRICAL LOAD SIGNAL PFP:25350

Description EBS010K0

The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor Mode EBS010K1

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION
Rear window defogger switch is ON
ON
and/or lighting switch is in 2nd.
LOAD SIGNAL ● Ignition switch: ON
Rear window defogger switch is OFF
OFF
and lighting switch is OFF.

Diagnostic Procedure EBS010K2

1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I

1. Turn ignition switch ON.
2. Connect CONSULT-II and select "DATA MONITOR" mode.
3. Select "LOAD SIGNAL" and check indication under the following
conditions.
Condition Indication
Rear window defogger switch ON ON
Rear window defogger switch OFF OFF
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
PBIB0103E

2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II

Check "LOAD SIGNAL" indication under the following conditions.
Condition Indication
Lighting switch ON at 2nd position ON
Lighting switch OFF OFF
OK or NG
OK >> INSPECTION END
NG >> GO TO 4.

PBIB0103E

3. CHECK REAR WINDOW DEFOGGER SYSTEM

Refer to GW-49, "REAR WINDOW DEFOGGER" .

>> INSPECTION END

4. CHECK HEADLAMP SYSTEM

Refer to LT-6, "HEADLAMP - XENON TYPE -" or LT-37, "DAYTIME LIGHT SYSTEM" .

>> INSPECTION END

EC-494
 ASCD BRAKE SWITCH

ASCD BRAKE SWITCH PFP:25320

A
Component Description EBS011QY

When the brake pedal is depressed, ASCD brake switch is turned

OFF and stop lamp switch is turned ON. ECM detects the state of EC
the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-516, "AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" for the ASCD function.
C

PBIB1282E

E
CONSULT-II Reference Value in Data Monitor Mode EBS011QZ

Specification data are reference values.

MONITOR ITEM CONDITION SPECIFICATION F
Clutch pedal and brake pedal: Fully
ON
released
BRAKE SW1 ● Ignition switch: ON
Clutch pedal and/or brake pedal: G
OFF
Slightly depressed
Brake pedal: Fully released OFF
BRAKE SW2 ● Ignition switch: ON H
Brake pedal: Slightly depressed ON

EC-495
 ASCD BRAKE SWITCH

Wiring Diagram (LHD Models) EBS011R0

TBWT0573E

EC-496
 ASCD BRAKE SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: ON] C
Approximately 0V
● Brake pedal is fully released
101 L/OR Stop lamp switch
[Ignition switch: ON] BATTERY VOLTAGE
● Brake pedal is depressed (11 - 14V) D
[Ignition switch: ON]
● Brake pedal and/or clutch pedal are Approximately 0V
depressed E
108 B/R ASCD brake switch
[Ignition switch: ON]
BATTERY VOLTAGE
● Brake pedal and clutch pedal are fully (11 - 14V)
released F

EC-497
 ASCD BRAKE SWITCH

Wiring Diagram (RHD Models) EBS011R1

TBWT0574E

EC-498
 ASCD BRAKE SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION: A
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER- EC
WIRE
MINAL ITEM CONDITION DATA (DC Voltage)
COLOR
NO.
[Ignition switch: ON] C
Approximately 0V
● Brake pedal is fully released
101 L/OR Stop lamp switch
[Ignition switch: ON] BATTERY VOLTAGE
● Brake pedal is depressed (11 - 14V) D
[Ignition switch: ON]
● Brake pedal and/or clutch pedal are Approximately 0V
depressed E
108 B/R ASCD brake switch
[Ignition switch: ON]
BATTERY VOLTAGE
● Brake pedal and clutch pedal are fully (11 - 14V)
released F

Diagnostic Procedure EBS011R2

M/T MODELS G
1. CHECK OVERALL FUNCTION-I
With CONSULT-II H
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II.
3. Check “BRAKE SW1” indication under the following conditions. I

CONDITION INDICATION
When brake pedal and/or clutch pedal are depressed OFF J
When brake pedal and clutch pedal are fully released ON

L
SEC011D

Without CONSULT-II
M
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 108 and ground under the
following conditions.
CONDITION VOLTAGE
When brake pedal and/or clutch pedal are depressed Approximately 0V
When brake pedal and clutch pedal are fully released Battery voltage

MBIB0061E

OK or NG
OK >> GO TO 2.
NG >> GO TO 3.

EC-499
 ASCD BRAKE SWITCH

2. CHECK OVERALL FUNCTION-II

With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
CONDITION INDICATION
When brake pedal is released OFF
When brake pedal is depressed ON

SEC013D

Without CONSULT-II
Check voltage between ECM terminal 101 and ground under the fol-
lowing conditions.
CONDITION VOLTAGE
When brake pedal is released Approximately 0V
When brake pedal is depressed Battery voltage

OK or NG
OK >> INSPECTION END
NG >> GO TO 11.
MBIB0060E

3. CHECK ASCD BRAKE SWITCH CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector.
3. Turn ignition switch ON.

PBIB1282E

4. Check voltage between ASCD clutch switch terminal 1 and

ground with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 8.
NG >> GO TO 4.

PBIB0799E

EC-500
 ASCD BRAKE SWITCH

4. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT A

1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON. EC

PBIB1282E
E
4. Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-II or tester.
F
Voltage: Battery voltage
OK or NG
OK >> GO TO 6. G
NG >> GO TO 5.

H
PBIB0857E

5. DETECT MALFUNCTIONING PART I

Check the following.

● Fuse block (J/B) connector E101 J
● 10A fuse
● Harness for open or short between ASCD brake switch and fuse
K
>> Repair open circuit or short to ground or short to power in harness or connectors.

6. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT L

1. Turn ignition switch OFF.

2. Check harness continuity between ASCD brake switch terminal 2 and ASCD clutch switch terminal 1. M
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

7. CHECK ASCD BRAKE SWITCH

Refer to EC-504, "Component Inspection"
OK or NG
OK >> GO TO 16.
NG >> Replace ASCD brake switch.

EC-501
 ASCD BRAKE SWITCH

8. CHECK ASCD CLUTCH SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ASCD clutch switch terminal 2 and ECM terminal 108.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.

9. DETECT MALFUNCTIONING PART

Check the following.
● Harness connectors E108, M15
● Harness connectors M72, F102
● Harness for open or short between ECM and ASCD clutch switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

10. CHECK ASCD CLUTCH SWITCH

Refer to EC-504, "Component Inspection" .
OK or NG
OK >> GO TO 16.
NG >> Replace ASCD clutch switch.

11. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.

PBIB1282E

3. Check voltage between stop lamp switch terminal 1 and ground

with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.

PBIB0117E

EC-502
 ASCD BRAKE SWITCH

12. DETECT MALFUNCTIONING PART A

Check the following.
● Fuse block (J/B) connector E101
● 10A fuse EC
● Harness for open or short between stop lamp switch and fuse

C
>> Repair open circuit or short to ground or short to power in harness or connectors.

13. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
D
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram. E
Continuity should exist.
3. Also check harness for short to ground and short to power. F
OK or NG
OK >> GO TO 15.
NG >> GO TO 14. G
14. DETECT MALFUNCTIONING PART
Check the following. H
● Harness connectors E108, M15
● Harness connectors M72, F102
● Harness for open or short between ECM and stop lamp switch I

>> Repair open circuit or short to ground or short to power in harness or connectors.
J
15. CHECK STOP LAMP SWITCH
Refer to EC-504, "Component Inspection" K
OK or NG
OK >> GO TO 16.
NG >> Replace stop lamp switch. L

16. CHECK INTERMITTENT INCIDENT

Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . M

>> INSPECTION END

EC-503
 ASCD BRAKE SWITCH

Component Inspection EBS011R3

ASCD BRAKE SWITCH

1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check harness continuity between ASCD brake switch terminals
1 and 2 under the following conditions.
Condition Continuity
When brake pedal is fully released. Should exist.
When brake pedal is depressed. Should not exist.

If NG, adjust ASCD brake switch installation, refer to BR-6,

"BRAKE PEDAL" , and perform step 3 again.

SEC023D

ASCD CLUTCH SWITCH

1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector.
3. Check harness continuity between ASCD clutch switch termi-
nals 1 and 2 under the following conditions.
Condition Continuity
When clutch pedal is fully released. Should exist.
When clutch pedal is depressed. Should not exist.

If NG, adjust ASCD clutch switch installation, refer to CL-5,

"CLUTCH PEDAL" , and perform step 3 again.

SEC024D

STOP LAMP SWITCH

1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals 1
and 2 under the following conditions.
Condition Continuity
When brake pedal is fully released. Should not exist.
When brake pedal is depressed. Should exist.

If NG, adjust stop lamp switch installation, refer to BR-6,

"BRAKE PEDAL" , and perform step 3 again.

PBIB0118E

EC-504
 ASCD INDICATOR

ASCD INDICATOR PFP:24814

A
Component Description EBS010K8

ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter. EC
CRUISE indicator illuminates when CRUISE switch on ASCD steering switch is turned ON to indicated that
ASCD system is ready for operation.
SET indicator illuminates when following conditions are met.
C
● CRUISE indicator is illuminated.
● SET switch on ASCD steering switch is turned ON while vehicle speed is within the range of ASCD set-
ting.
D
SET indicator remains lit during ASCD control.
Refer to EC-516, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function.
CONSULT-II Reference Value in Data Monitor Mode EBS011R4 E
Specification data are reference value.
MONITOR ITEM CONDITION SPECIFICATION
F
CRUISE switch: Pressed at the 1st
CRUISE LAMP ● Ignition switch: ON ON → OFF
time → at the 2nd time
● CRUISE switch: ON COAST/SET switch: Pressed ON
G
SET LAMP ● When vehicle speed is between
40 km/h (25 MPH) and 210 km/h COAST/SET switch: Released OFF
(130 MPH)
H

EC-505
 ASCD INDICATOR

Wiring Diagram EBS010KA

TBWT0690E

EC-506
 ASCD INDICATOR

Diagnostic Procedure EBS011R5

1. CHECK OVERALL FUNCTION A

Check ASCD indicator under the following conditions.

ASCD INDICATOR CONDITION SPECIFICATION EC
CRUISE switch: Pressed at the 1st
CRUISE LAMP ● Ignition switch: ON ON → OFF
time → at the 2nd time
C
● CRUISE switch: ON COAST/SET switch: Pressed ON

SET LAMP ● When vehicle speed is between

40 km/h (25 MPH) and 210 km/h COAST/SET switch: Released OFF
(130 MPH) D
OK or NG
OK >> INSPECTION END
E
NG >> GO TO 2.

2. CHECK DTC
F
Check that DTC U1000 or U1001 is not displayed.
OK or NG
OK >> GO TO 3. G
NG >> Perform trouble diagnoses for DTC U1000, U1001. Refer to EC-121, "DTC U1000, U1001 CAN
COMMUNICATION LINE" .

3. CHECK DTC WITH UNIFIED METER AND A/C AMP. H

Refer to DI-69, "SELF-DIAGNOSIS RESULTS" .

OK or NG I
OK >> GO TO 4.
NG >> Go to DI-64, "UNIFIED METER AND A/C AMP" .
J
4. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
K

>> INSPECTION END

L

EC-507
 MI & DATA LINK CONNECTORS

MI & DATA LINK CONNECTORS PFP:24814

Wiring Diagram EBS010KC

TBWT0691E

EC-508
MI & DATA LINK CONNECTORS

EC

TBWT0575E

EC-509
 EVAPORATIVE EMISSION SYSTEM

EVAPORATIVE EMISSION SYSTEM PFP:14950

Description EBS011R6

SYSTEM DESCRIPTION

PBIB1650E

The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.

EC-510
 EVAPORATIVE EMISSION SYSTEM

EVAPORATIVE EMISSION LINE DRAWING

A

EC

PBIB1634E

EC-511
EVAPORATIVE EMISSION SYSTEM

PBIB1635E

EC-512
 EVAPORATIVE EMISSION SYSTEM

Component Inspection EBS011R7

EVAP CANISTER A
Check EVAP canister as follows:
1. Block port B . Orally blow air through port A .
Check that air flows freely through port C . EC
2. Block port A . Orally blow air through port B .
Check that air flows freely through port C .
C

D
ECD1089D

FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP) E
1. Wipe clean valve housing.

H
SEF989X

2. Check valve opening pressure and vacuum.

I
Pressure: 15.3 - 20.0 kPa (0.153 - 0.200 bar,
0.156 - 0.204 kg/cm2 , 2.22 - 2.90 psi)
Vacuum: −6.0 to −3.3 kPa (−0.060 to −0.033 bar, J
−0.061 to −0.034 kg/cm2 , −0.87 to −0.48 psi)
3. If out of specification, replace fuel filler cap as an assembly. K

SEF943S
L
WATER SEPARATOR
1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance. M
3. Check visually for cracks or flaws in the hose.
4. Check that A and C are not clogged by blowing air into B with
A , and then C plugged.
5. In case of NG in items 2 - 4, replace the parts.
NOTE:
● Do not disassemble water separator.

PBIB1032E

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to EC-238, "Component Inspection" .

EC-513
 POSITIVE CRANKCASE VENTILATION

POSITIVE CRANKCASE VENTILATION PFP:11810

Description EBS010KH

SYSTEM DESCRIPTION

SEC921C

This system returns blow-by gas to the intake manifold.

The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the
PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of venti-
lating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air
passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold
vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection
in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.

PBIB1588E

Component Inspection EBS010KI

PCV (POSITIVE CRANKCASE VENTILATION) VALVE

With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.

PBIB1589E

EC-514
 POSITIVE CRANKCASE VENTILATION

PCV VALVE VENTILATION HOSE

1. Check hoses and hose connections for leaks. A
2. Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.
EC

S-ET277
D

EC-515
 AUTOMATIC SPEED CONTROL DEVICE (ASCD)

AUTOMATIC SPEED CONTROL DEVICE (ASCD) PFP:18930

System Description EBS010KJ

INPUT/OUTPUT SIGNAL CHART

Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
Stop lamp switch Brake pedal operation
ASCD clutch switch Clutch pedal operation
Electric throttle control
ASCD steering switch ASCD steering switch operation ASCD vehicle speed control
actuator
Park/Neutral position (PNP)
Gear position
switch
Unified meter and A/C amp.* Vehicle speed
*: This signal is sent to the ECM through CAN communication line.

BASIC ASCD SYSTEM

Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 210 km/h (130 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press ASCD CRUISE switch (Main switch). (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 210 km/h (130
MPH), press SET switch. (Then SET indicator in combination meter illuminates.)
ACCEL OPERATION
If the RESUME/ACCEL switch is pressed during cruise control driving, increase the vehicle speed until the
switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
● CANCEL switch is pressed
● More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
● Brake pedal is depressed
● Clutch pedal is depressed or gear position is changed to the neutral position
● Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
● ESP/TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
● Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET switch or RESUME switch.
● Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.

EC-516
 AUTOMATIC SPEED CONTROL DEVICE (ASCD)

RESUME OPERATION
When the RESUME/ACCEL switch is pressed after cancel operation other than pressing MAIN switch is per- A
formed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must meet
following conditions.
● Brake pedal is released EC
● Clutch pedal is released
● Vehicle speed is greater than 40 km/h (25 MPH) and less than 210 km/h (130 MPH)
C
Component Description EBS010KK

ASCD STEERING SWITCH

Refer to EC-403 . D
ASCD BRAKE SWITCH
Refer to EC-410 , and EC-495 .
E
ASCD CLUTCH SWITCH
Refer to EC-410 .
STOP LAMP SWITCH F
Refer to EC-410 , EC-428 and EC-495 .
ELECTRIC THROTTLE CONTROL ACTUATOR
G
Refer to EC-273 , EC-275 , EC-282 and EC-287 .
ASCD INDICATOR
Refer to EC-505 . H

EC-517
 SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS) PFP:00030

Fuel Pressure EBS010KL

Fuel pressure at idling kPa (bar, kg/cm2 , psi) Approximately 350 (3.5, 3.57, 51)

Idle Speed and Ignition Timing EBS011R8

Target idle speed No-load* (in Neutral position) 650±50 rpm

Air conditioner: ON In Neutral position 775 rpm or more
Ignition timing In Neutral position 15° ± 5° BTDC
*: Under the following conditions:
● Air conditioner switch: OFF
● Electric load: OFF (Lights, heater fan & rear window defogger)
● Steering wheel: Kept in straight-ahead position

Calculated Load Value EBS010KN

Conditions Calculated load value % (Using CONSULT-II or GST)

At idle 5 - 35
At 2,500 rpm 5 - 35

Mass Air Flow Sensor EBS010KO

Supply voltage Battery voltage (11 - 14V)

Output voltage at idle 1.1 - 1.5*V
2.0 - 6.0 g·m/sec at idle*
Mass air flow (Using CONSULT-II or GST)
7.0 - 20.0 g·m/sec at 2,500 rpm*
*: Engine is warmed up to normal operating temperature and running under no-load.

Intake Air Temperature Sensor EBS010KP

Temperature °C (°F) Resistance kΩ

25 (77) 1.94 - 2.06
80 (176) 0.295 - 0.349

Engine Coolant Temperature Sensor EBS010KQ

Temperature °C (°F) Resistance kΩ

20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260

Air Fuel Ratio (A/F) Sensor 1 Heater EBS010KR

Resistance [at 25°C (77°F)] 2.3 - 4.3Ω

Heated Oxygen sensor 2 Heater EBS010KS

Resistance [at 25°C (77°F)] 5.0 - 7.0Ω

Crankshaft Position Sensor (POS) EBS010KT

Refer to EC-220, "Component Inspection" .

Camshaft Position Sensor (PHASE) EBS010KU

Refer to EC-228, "Component Inspection" .

Throttle Control Motor EBS010KV

Resistance [at 25°C (77°F)] Approximately 1 - 15Ω

EC-518
 SERVICE DATA AND SPECIFICATIONS (SDS)

Injector EBS010KW

A
Resistance [at 20°C (68°F)] 13.5 - 17.5Ω

Fuel Pump EBS010KX

EC
Resistance [at 25°C (77°F)] Approximately 1.0Ω

EC-519
SERVICE DATA AND SPECIFICATIONS (SDS)

EC-520