BRAKES

SECTION
BRAKE CONTROL SYSTEM
BRC B

E
CONTENTS
VDC/TCS/ABS Component Parts Location ......................................30 BRC
Component Description ...........................................35
BASIC INSPECTION .................................... 5
EBD ................................................................... 36
G
DIAGNOSIS AND REPAIR WORK FLOW ......... 5 System Diagram ......................................................36
Work Flow ................................................................. 5 System Description ..................................................37
Diagnostic Work Sheet .............................................. 8 Component Parts Location ......................................38
Component Description ...........................................43 H
INSPECTION AND ADJUSTMENT ..................... 9
DIAGNOSIS SYSTEM [ABS ACTUATOR
ADDITIONAL SERVICE WHEN REPLACING AND ELECTRIC UNIT (CONTROL UNIT)] ....... 44
CONTROL UNIT .......................................................... 9 I
CONSULT-III Function ............................................44
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description .................................. 9 DTC/CIRCUIT DIAGNOSIS ......................... 50
ADDITIONAL SERVICE WHEN REPLACING J
CONTROL UNIT : Special Repair Requirement ...... 9 C1101, C1102, C1103, C1104 WHEEL SEN-
SOR ................................................................... 50
ADJUSTMENT OF STEERING ANGLE SENSOR Description ...............................................................50
NEUTRAL POSITION .................................................. 9 K
DTC Logic ................................................................50
ADJUSTMENT OF STEERING ANGLE SENSOR Diagnosis Procedure ...............................................50
NEUTRAL POSITION : Description .......................... 9
Component Inspection .............................................52
ADJUSTMENT OF STEERING ANGLE SENSOR L
Special Repair Requirement ....................................52
NEUTRAL POSITION : Special Repair Require-
ment .......................................................................... 9 C1105, C1106, C1107, C1108 WHEEL SEN-
SOR ................................................................... 53 M
SYSTEM DESCRIPTION ............................. 11 Description ...............................................................53
VDC ....................................................................11 DTC Logic ................................................................53
System Diagram ...................................................... 11 Diagnosis Procedure ...............................................53 N
System Description ................................................. 12 Component Inspection .............................................55
Component Parts Location ...................................... 14 Special Repair Requirement ....................................55
Component Description ........................................... 19 C1109 POWER AND GROUND SYSTEM ........ 56 O
TCS .....................................................................20 Description ...............................................................56
System Diagram ...................................................... 20 DTC Logic ................................................................56
System Description ................................................. 21 Diagnosis Procedure ...............................................56 P
Component Parts Location ...................................... 22 Special Repair Requirement ....................................57
Component Description ........................................... 27 C1110, C1153, C1170 ABS ACTUATOR AND
ABS ....................................................................28 ELECTRIC UNIT (CONTROL UNIT) ................. 58
System Diagram ...................................................... 28 DTC Logic ................................................................58
System Description ................................................. 29 Diagnosis Procedure ...............................................58
Special Repair Requirement ....................................58

Revision: 2009 March BRC-1 2009 FX35/FX50

C1111 ABS MOTOR, MOTOR RELAY SYS- C1143 STEERING ANGLE SENSOR ............... 76
TEM .................................................................... 59 Description .............................................................. 76
Description .............................................................. 59 DTC Logic ............................................................... 76
DTC Logic ............................................................... 59 Diagnosis Procedure ............................................... 76
Diagnosis Procedure .............................................. 59 Component Inspection ............................................ 77
Component Inspection ............................................ 60 Special Repair Requirement ................................... 77
Special Repair Requirement ................................... 60
C1144 STEERING ANGLE SENSOR ............... 78
C1114 ACTUATOR RELAY SYSTEM ............... 61 DTC Logic ............................................................... 78
Description .............................................................. 61 Diagnosis Procedure ............................................... 78
DTC Logic ............................................................... 61 Special Repair Requirement ................................... 78
Diagnosis Procedure .............................................. 61
Component Inspection ............................................ 62 C1145, C1146 YAW RATE/SIDE G SENSOR... 79
Special Repair Requirement ................................... 62 Description .............................................................. 79
DTC Logic ............................................................... 79
C1115 WHEEL SENSOR ................................... 63 Diagnosis Procedure ............................................... 79
Description .............................................................. 63 Component Inspection ............................................ 80
DTC Logic ............................................................... 63 Special Repair Requirement ................................... 81
Diagnosis Procedure .............................................. 63
Component Inspection ............................................ 65 C1147, C1148, C1149, C1150 USV/HSV LINE... 82
Special Repair Requirement ................................... 65 Description .............................................................. 82
DTC Logic ............................................................... 82
C1116 STOP LAMP SWITCH ............................ 66 Diagnosis Procedure ............................................... 82
Description .............................................................. 66 Component Inspection ............................................ 83
DTC Logic ............................................................... 66 Special Repair Requirement ................................... 83
Diagnosis Procedure .............................................. 66
Component Inspection ............................................ 66 C1154 TRANSMISSION RANGE SWITCH ....... 85
Special Repair Requirement ................................... 67 Description .............................................................. 85
DTC Logic ............................................................... 85
C1120, C1122, C1124, C1126 IN ABS SOL ..... 68 Diagnosis Procedure ............................................... 85
Description .............................................................. 68 Component Inspection ............................................ 85
DTC Logic ............................................................... 68 Special Repair Requirement ................................... 86
Diagnosis Procedure .............................................. 68
Component Inspection ............................................ 69 C1155 BRAKE FLUID LEVEL SWITCH ........... 87
Special Repair Requirement ................................... 69 Description .............................................................. 87
DTC Logic ............................................................... 87
C1121, C1123, C1125, C1127 OUT ABS SOL... 70 Diagnosis Procedure ............................................... 87
Description .............................................................. 70 Component Inspection ............................................ 88
DTC Logic ............................................................... 70 Special Repair Requirement ................................... 88
Diagnosis Procedure .............................................. 70
Component Inspection ............................................ 71 C1156 STEERING ANGLE SENSOR (CAN) ... 89
Special Repair Requirement ................................... 71 Description .............................................................. 89
DTC Logic ............................................................... 89
C1130 ENGINE SIGNAL ................................... 72 Diagnosis Procedure ............................................... 89
Description .............................................................. 72 Special Repair Requirement ................................... 89
DTC Logic ............................................................... 72
Diagnosis Procedure .............................................. 72 C1185 ICC UNIT ................................................ 90
Special Repair Requirement ................................... 72 Description .............................................................. 90
DTC Logic ............................................................... 90
C1137 RAS CIRCUIT ......................................... 73 Diagnosis Procedure ............................................... 90
Description .............................................................. 73 Special Repair Requirement ................................... 90
DTC Logic ............................................................... 73
Diagnosis Procedure .............................................. 73 C1197 VACUUM SENSOR ................................ 91
Special Repair Requirement ................................... 73 Description .............................................................. 91
DTC Logic ............................................................... 91
C1142 PRESS SENSOR ................................... 74 Diagnosis Procedure ............................................... 91
Description .............................................................. 74 Special Repair Requirement ................................... 91
DTC Logic ............................................................... 74
Diagnosis Procedure .............................................. 74 C1198 VACUUM SENSOR ................................ 93
Component Inspection ............................................ 75 Description .............................................................. 93
Special Repair Requirement ................................... 75 DTC Logic ............................................................... 93

Revision: 2009 March BRC-2 2009 FX35/FX50

 Diagnosis Procedure ............................................... 93 Diagnosis Procedure ............................................. 110
Special Repair Requirement ................................... 93 A
ECU DIAGNOSIS INFORMATION ............ 111
C1199 VACUUM SENSOR ................................95
Description .............................................................. 95 ABS ACTUATOR AND ELECTRIC UNIT
DTC Logic ............................................................... 95 (CONTROL UNIT) ........................................... 111 B
Diagnosis Procedure ............................................... 95 Reference Value .................................................... 111
Special Repair Requirement ................................... 96 Wiring Diagram - BRAKE CONTROL SYSTEM - .. 116
Fail-Safe ................................................................ 120 C
C119A VACUUM SENSOR ................................97 DTC Index ............................................................. 121
Description .............................................................. 97
DTC Logic ............................................................... 97 SYMPTOM DIAGNOSIS ............................ 123
D
Diagnosis Procedure ............................................... 97
Special Repair Requirement ................................... 98 EXCESSIVE ABS FUNCTION OPERATION
FREQUENCY .................................................. 123
U1000, U1002 CAN COMM CIRCUIT ................99 Diagnosis Procedure ............................................. 123 E
Description .............................................................. 99
DTC Logic ............................................................... 99 UNEXPECTED PEDAL REACTION ............... 124
Diagnosis Procedure ............................................... 99 Diagnosis Procedure ............................................. 124
BRC
Special Repair Requirement ................................... 99
THE BRAKING DISTANCE IS LONG ............. 125
U1100 CAN COMM CIRCUIT (ICC UNIT) ........ 100 Diagnosis Procedure ............................................. 125
Description ............................................................ 100 G
DTC Logic ............................................................. 100
ABS FUNCTION DOES NOT OPERATE ....... 126
Diagnosis Procedure ............................................. 126
Diagnosis Procedure ............................................. 100
Special Repair Requirement ................................. 100 PEDAL VIBRATION OR ABS OPERATION H
POWER SUPPLY AND GROUND CIRCUIT .... 101 SOUND OCCURS ........................................... 127
Description ............................................................ 101 Diagnosis Procedure ............................................. 127
Diagnosis Procedure ............................................. 101 I
VEHICLE JERKS DURING VDC/TCS/ABS
Special Repair Requirement ................................. 101
CONTROL ....................................................... 128
PARKING BRAKE SWITCH ............................ 103 Diagnosis Procedure ............................................. 128
J
Component Function Check .................................. 103
NORMAL OPERATING CONDITION ............. 129
Diagnosis Procedure ............................................. 103
Description ............................................................. 129
Component Inspection .......................................... 103
K
VDC OFF SWITCH ........................................... 105 PRECAUTION ............................................ 130
Description ............................................................ 105 PRECAUTIONS ............................................... 130
Component Function Check .................................. 105 Precaution for Supplemental Restraint System L
Diagnosis Procedure ............................................. 105 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
Component Inspection .......................................... 106 SIONER" ............................................................... 130
ABS WARNING LAMP ..................................... 107 Precaution for Brake System ................................. 130 M
Precaution for Brake Control ................................. 131
Description ............................................................ 107
Precautions for Harness Repair ............................ 131
Component Function Check .................................. 107
Diagnosis Procedure ............................................. 107 PREPARATION ......................................... 132 N
BRAKE WARNING LAMP ............................... 108 PREPARATION ............................................... 132
Description ............................................................ 108 Special Service Tool .............................................. 132
Component Function Check .................................. 108 O
Commercial Service Tool ...................................... 132
Diagnosis Procedure ............................................. 108
REMOVAL AND INSTALLATION ............. 133
VDC OFF INDICATOR LAMP .......................... 109 P
Description ............................................................ 109 WHEEL SENSOR ............................................ 133
Component Function Check .................................. 109
Diagnosis Procedure ............................................. 109 FRONT WHEEL SENSOR ....................................... 133
FRONT WHEEL SENSOR : Exploded View ......... 133
SLIP INDICATOR LAMP .................................. 110 FRONT WHEEL SENSOR : Removal and Instal-
Description ............................................................ 110 lation ...................................................................... 133
Component Function Check .................................. 110
REAR WHEEL SENSOR ......................................... 134

Revision: 2009 March BRC-3 2009 FX35/FX50

 REAR WHEEL SENSOR : Exploded View ............134 NORMAL OPERATING CONDITION ............... 144
REAR WHEEL SENSOR : Removal and Installa- Description ............................................................ 144
tion .........................................................................134
PRECAUTION ........................................... 145
SENSOR ROTOR ............................................ 135
PRECAUTIONS ................................................ 145
FRONT SENSOR ROTOR .......................................135 Precautions for Preview Function Service ............ 145
FRONT SENSOR ROTOR : Exploded View .........135 INTELLIGENT BRAKE ASSIST
FRONT SENSOR ROTOR : Removal and Instal-
lation ......................................................................135 SYSTEM DESCRIPTION .......................... 146
REAR SENSOR ROTOR .........................................135 INTELLIGENT BRAKE ASSIST ....................... 146
REAR SENSOR ROTOR : Exploded View ............135 System Description ............................................... 146
REAR SENSOR ROTOR : Removal and Installa- Component Parts Location ................................... 148
tion .........................................................................135 Component Description ........................................ 149
ABS ACTUATOR AND ELECTRIC UNIT DTC/CIRCUIT DIAGNOSIS ....................... 150
(CONTROL UNIT) ............................................ 136
Exploded View .......................................................136 INTELLIGENT BRAKE ASSIST ....................... 150
Removal and Installation .......................................136 Diagnosis Procedure ............................................. 150
YAW RATE/SIDE G SENSOR ......................... 138 SYMPTOM DIAGNOSIS ........................... 151
Exploded View .......................................................138
Removal and Installation .......................................138 SWITCH DOES NOT TURN ON / SWITCH
DOES NOT TURN OFF .................................... 151
STEERING ANGLE SENSOR ......................... 139 Symptom Table ..................................................... 151
Exploded View .......................................................139 Description ............................................................ 151
Removal and Installation .......................................139 Diagnosis Procedure ............................................. 151
BRAKE ASSIST
NORMAL OPERATING CONDITION ............... 153
SYSTEM DESCRIPTION ........................... 140 Description ............................................................ 153

PREVIEW FUNCTION ..................................... 140 PRECAUTION ........................................... 154

System Description ................................................140
Component Parts Location ....................................141 PRECAUTIONS ................................................ 154
Component Description .........................................142 Precautions for IBA System Service ..................... 154

DTC/CIRCUIT DIAGNOSIS ........................ 143 REMOVAL AND INSTALLATION ............. 155

PREVIEW FUNCTION ..................................... 143 IBA OFF SWITCH ............................................. 155
Diagnosis Procedure .............................................143 Exploded View ...................................................... 155
Removal and Installation ....................................... 155
SYMPTOM DIAGNOSIS ............................ 144

Revision: 2009 March BRC-4 2009 FX35/FX50

 DIAGNOSIS AND REPAIR WORK FLOW
< BASIC INSPECTION > [VDC/TCS/ABS]

BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow INFOID:0000000003827919
B

PRECAUTIONS FOR DIAGNOSIS

If steering angle sensor, steering system parts, suspension system parts, ABS actuator and electric unit (con- C
trol unit) or tires have been replaced, or if wheel alignment has been adjusted, be sure to adjust neutral posi-
tion of steering angle sensor before driving. Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION : Description".
D

BRC

Revision: 2009 March BRC-5 2009 FX35/FX50

 DIAGNOSIS AND REPAIR WORK FLOW
< BASIC INSPECTION > [VDC/TCS/ABS]
OVERALL SEQUENCE

JSFIA0239GB

DETAILED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the diagnosis work sheet. Refer to BRC-8, "Diagnostic Work Sheet".

>> GO TO 2.

Revision: 2009 March BRC-6 2009 FX35/FX50

 DIAGNOSIS AND REPAIR WORK FLOW
< BASIC INSPECTION > [VDC/TCS/ABS]

2.PERFORM THE SELF-DIAGNOSIS A

Check the DTC display with the self-diagnosis function.
Is there any DTC displayed?
YES >> GO TO 3. B
NO >> GO TO 4.
3.PERFORM THE SYSTEM DIAGNOSIS
C
Perform the diagnosis applicable to the displayed DTC. Refer to BRC-121, "DTC Index".

>> GO TO 7. D
4.CHECK THE SYMPTOM THAT IS NOT CONSIDERED A SYSTEM MALFUNCTION
Check that the symptom is a normal operation that is not considered a system malfunction. Refer to BRC-129,
"Description". E
Is the symptom a normal operation?
YES >> INSPECTION END
NO >> GO TO 5. BRC
5.CHECK THE WARNING LAMP AND INDICATOR LAMP FOR ILLUMINATION
Check that the warning lamp and indicator lamp illuminate. G
• ABS warning lamp: Refer to BRC-107, "Description".
• Brake warning lamp: Refer to BRC-108, "Description".
• VDC OFF indicator lamp: Refer to BRC-109, "Description".
• SLIP indicator lamp: Refer to BRC-110, "Description". H
Is ON/OFF timing normal?
YES >> GO TO 6.
NO >> GO TO 2. I

6.PERFORM THE DIAGNOSIS BY SYMPTOM

Perform the diagnosis applicable to the symptom. J

>> GO TO 7.
7.REPAIR OR REPLACE THE MALFUNCTIONING PARTS K

Repair or replace the specified malfunctioning parts.

L
>> GO TO 8.
8.MEMORY CLEAR
M
Perform self-diagnosis memory clear.

>> GO TO 9. N
9.FINAL CHECK
Perform the self-diagnosis again, and check that the malfunction is repaired completely.
Is no other DTC present and the repair completed? O
YES >> INSPECTION END
NO >> GO TO 3.
P

Revision: 2009 March BRC-7 2009 FX35/FX50

 DIAGNOSIS AND REPAIR WORK FLOW
< BASIC INSPECTION > [VDC/TCS/ABS]
Diagnostic Work Sheet INFOID:0000000003827920

SFIA3265E

Revision: 2009 March BRC-8 2009 FX35/FX50

 INSPECTION AND ADJUSTMENT
< BASIC INSPECTION > [VDC/TCS/ABS]
INSPECTION AND ADJUSTMENT
A
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000003827921 B

After replacing the ABS actuator and electric unit (control unit), perform the neutral position adjustment for the
steering angle sensor.
C
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement INFOID:0000000003827922

D
1.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
Perform the neutral position adjustment for the steering angle sensor.
E

>> Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Spe-
cial Repair Requirement".
BRC
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description
INFOID:0000000003827923 G
When doing work that applies to the list below, make sure to adjust neutral position of steering angle sensor
before running vehicle.
×: Required –: Not required H
Situation Adjustment of steering angle sensor neutral position
Removing/Installing ABS actuator and electric unit (control unit) —
I
Replacing ABS actuator and electric unit (control unit) ×
Removing/Installing steering angle sensor ×
Replacing steering angle sensor × J
Removing/Installing steering components ×
Replacing steering components ×
K
Removing/Installing suspension components ×
Replacing suspension components ×
Change tires to new ones — L
Tire rotation —
Adjusting wheel alignment ×
M
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Re-
pair Requirement INFOID:0000000003827924

N
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-III. O
(Adjustment cannot be done without CONSULT-III.)
1.ALIGN THE VEHICLE STATUS
Stop the vehicle with front wheels in straight-ahead position. P

>> GO TO 2.
2.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
1. On the CONSULT-III screen, touch "WORK SUPPORT" and “ST ANGLE SENSOR ADJUSTMENT" in
order.

Revision: 2009 March BRC-9 2009 FX35/FX50

 INSPECTION AND ADJUSTMENT
< BASIC INSPECTION > [VDC/TCS/ABS]
2. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle sensor.
3. After approximately 10 seconds, touch “END”.
NOTE:
After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.

>> GO TO 3.
3.CHECK DATA MONITOR
1. Run the vehicle with front wheels in straight-ahead position, then stop.
2. Select “STR ANGLE SIG” in “DATA MONITOR” and check steering angle sensor signal.

STR ANGLE SIG : 0±2.5°

Is the steering angle within the specified range?
YES >> GO TO 4.
NO >> Perform the neutral position adjustment for the steering angle sensor again, GO TO 1.
4.ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memories of the ABS actuator and electric unit (control unit), ECM and ICC.
• ABS actuator and electric unit (control unit): Refer to BRC-44, "CONSULT-III Function".
• ECM
- VQ35HR: Refer to EC-124, "CONSULT-III Function".
- VK50VE: Refer to EC-719, "CONSULT-III Function".
• ICC: Refer to CCS-45, "CONSULT-III Function (ICC)".
Are the memories erased?
YES >> INSPECTION END
NO >> Check the items indicated by the self-diagnosis.

Revision: 2009 March BRC-10 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]

SYSTEM DESCRIPTION A
VDC
System Diagram INFOID:0000000003827925
B

With LDP (VK50VE models)

C

BRC

JSFIA0287GB J
With LDP (VQ35HR models)
K

JSFIA0276GB

Revision: 2009 March BRC-11 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Without LDP (VK50VE models)

JSFIA0288GB

Without LDP (VQ35HR models)

JSFIA0277GB

System Description INFOID:0000000003827926

• Vehicle Dynamics Control system detects driver′s steering operation amount and brake pedal travel from
steering angle sensor and pressure sensor. Using information from yaw rate/side G sensor and wheel sen-
sor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle driving stabil-
ity by controlling brake application to 4 wheels and engine output.

Revision: 2009 March BRC-12 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
• Brake force control function at booster fail detects driver′s brake operations with the pressure sensor, judges
a dysfunction in brake power of brake booster by using information from the vacuum sensor, and assists A
braking force by controlling brakes of four wheels.
• Brake force control function at braking hard detects driver′s brake operations with the pressure sensor,
judges a brake booster′s maximum brake power function by using information from the vacuum sensor, and
B
enhances more powerful braking force by controlling brakes of four wheels.
• During VDC operation, it informs driver of system operation by flashing SLIP indicator lamp.
• Brake force control function at booster fail alerts the driver to the dysfunction in brake power by turning on
the brake warning lamp during brake force control function at booster fail operation. C
• Electrical system diagnosis by CONSULT-III is available.

BRC

Revision: 2009 March BRC-13 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Component Parts Location INFOID:0000000003827927

For USA (VK50VE models)

JSFIA0289GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor

Revision: 2009 March BRC-14 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit) A
10. VDC OFF switch 11. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Brake booster

B
D. Inside brake master cylinder cover E. Steering knuckle F. Under center console
G. Instrument driver lower panel H. Rear final drive assembly

For USA (VQ35HR models) C

BRC

JSFIA0273GB

Revision: 2009 March BRC-15 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
10. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel
G. Rear final drive assembly

Revision: 2009 March BRC-16 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Except for USA (VK50VE models)
A

BRC

JSFIA0290GB

P
1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp
4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit)
10. VDC OFF switch 11. Rear wheel sensor

Revision: 2009 March BRC-17 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
A. Back of spiral cable assembly B. Combination meter C. Brake booster
D. Inside brake master cylinder cover E. Steering knuckle F. Under center console
G. Instrument driver lower panel H. Rear final drive assembly

Except for USA (VQ35HR models)

JSFIA0274GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)

Revision: 2009 March BRC-18 2009 FX35/FX50

 VDC
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
10. Rear wheel sensor A

A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel B
G. Rear final drive assembly

Component Description INFOID:0000000003827928

C

Component parts Reference

Pump D
BRC-59, "Description"
Motor
Actuator relay (main relay) BRC-61, "Description"
E
ABS actuator and electric unit (control unit) Solenoid valve BRC-68, "Description"
Pressure sensor BRC-74, "Description"
VDC switch-over valve BRC
BRC-82, "Description"
(USV1, USV2, HSV1, HSV2)
Wheel sensor BRC-50, "Description"
Yaw rate/side G sensor BRC-79, "Description" G
Steering angle sensor BRC-76, "Description"
VDC OFF switch BRC-105, "Description"
H
ABS warning lamp BRC-107, "Description"
Brake warning lamp BRC-108, "Description"
VDC OFF indicator lamp BRC-109, "Description" I
SLIP indicator lamp BRC-110, "Description"
Vacuum sensor (Only VK50VE models) BRC-91, "Description"
J

Revision: 2009 March BRC-19 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
TCS
System Diagram INFOID:0000000003828850

With LDP (VK50VE models)

JSFIA0287GB

With LDP (VQ35HR models)

JSFIA0276GB

Revision: 2009 March BRC-20 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Without LDP (VK50VE models)
A

BRC

H
JSFIA0288GB

Without LDP (VQ35HR models)

I

JSFIA0277GB
P

System Description INFOID:0000000003827930

• Traction Control System is a function that electronically controls engine torque, brake fluid pressure and A/T
gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals from 4
wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels (rear
wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid pres-

Revision: 2009 March BRC-21 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
sure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine torque by
the control unit. Further more, throttle position is continuously controlled to ensure the optimum engine
torque at all times.
• During TCS operation, TCS informs driver of system operation by flashing SLIP indicator lamp.
• Electrical system diagnosis by CONSULT-III is available.
Component Parts Location INFOID:0000000003828851

For USA (VK50VE models)

JSFIA0289GB

Revision: 2009 March BRC-22 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp A

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit)
B
10. VDC OFF switch 11. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Brake booster

D. Inside brake master cylinder cover E. Steering knuckle F. Under center console C
G. Instrument driver lower panel H. Rear final drive assembly

BRC

Revision: 2009 March BRC-23 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
For USA (VQ35HR models)

JSFIA0273GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
10. Rear wheel sensor

Revision: 2009 March BRC-24 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel A
G. Rear final drive assembly

Except for USA (VK50VE models) B

BRC

JSFIA0290GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor

Revision: 2009 March BRC-25 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit)
10. VDC OFF switch 11. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Brake booster

D. Inside brake master cylinder cover E. Steering knuckle F. Under center console
G. Instrument driver lower panel H. Rear final drive assembly

Except for USA (VQ35HR models)

JSFIA0274GB

Revision: 2009 March BRC-26 2009 FX35/FX50

 TCS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp A

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
B
10. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel C
G. Rear final drive assembly

Component Description INFOID:0000000003828852 D

Component parts Reference

E
Pump
BRC-59, "Description"
Motor
Actuator relay (main relay) BRC-61, "Description" BRC
ABS actuator and electric unit (control unit) Solenoid valve BRC-68, "Description"
Pressure sensor BRC-74, "Description"
G
VDC switch-over valve
BRC-82, "Description"
(USV1, USV2, HSV1, HSV2)
Wheel sensor BRC-50, "Description"
H
Yaw rate/side G sensor BRC-79, "Description"
Steering angle sensor BRC-76, "Description"
VDC OFF switch BRC-105, "Description" I
ABS warning lamp BRC-107, "Description"
Brake warning lamp BRC-108, "Description"
J
VDC OFF indicator lamp BRC-109, "Description"
SLIP indicator lamp BRC-110, "Description"
Vacuum sensor (Only VK50VE models) BRC-91, "Description" K

Revision: 2009 March BRC-27 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
ABS
System Diagram INFOID:0000000003828857

With LDP (VK50VE models)

JSFIA0287GB

With LDP (VQ35HR models)

JSFIA0276GB

Revision: 2009 March BRC-28 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Without LDP (VK50VE models)
A

BRC

H
JSFIA0288GB

Without LDP (VQ35HR models)

I

JSFIA0277GB
P

System Description INFOID:0000000003827934

• Anti-Lock Braking System detects wheel revolution while braking, electronically controls braking force, and
prevents wheel locking during sudden braking. It improves handling stability and maneuverability for avoid-
ing obstacles.
• Electrical system diagnosis by CONSULT-III is available.

Revision: 2009 March BRC-29 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Component Parts Location INFOID:0000000003828858

For USA (VK50VE models)

JSFIA0289GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor

Revision: 2009 March BRC-30 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit) A
10. VDC OFF switch 11. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Brake booster

B
D. Inside brake master cylinder cover E. Steering knuckle F. Under center console
G. Instrument driver lower panel H. Rear final drive assembly

For USA (VQ35HR models) C

BRC

JSFIA0273GB

Revision: 2009 March BRC-31 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
10. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel
G. Rear final drive assembly

Revision: 2009 March BRC-32 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Except for USA (VK50VE models)
A

BRC

JSFIA0290GB

P
1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp
4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit)
10. VDC OFF switch 11. Rear wheel sensor

Revision: 2009 March BRC-33 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
A. Back of spiral cable assembly B. Combination meter C. Brake booster
D. Inside brake master cylinder cover E. Steering knuckle F. Under center console
G. Instrument driver lower panel H. Rear final drive assembly

Except for USA (VQ35HR models)

JSFIA0274GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)

Revision: 2009 March BRC-34 2009 FX35/FX50

 ABS
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
10. Rear wheel sensor A

A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel B
G. Rear final drive assembly

Component Description INFOID:0000000003828859

C

Component parts Reference

Pump D
BRC-59, "Description"
Motor
Actuator relay (main relay) BRC-61, "Description"
E
ABS actuator and electric unit (control unit) Solenoid valve BRC-68, "Description"
Pressure sensor BRC-74, "Description"
VDC switch-over valve BRC
BRC-82, "Description"
(USV1, USV2, HSV1, HSV2)
Wheel sensor BRC-50, "Description"
Yaw rate/side G sensor BRC-79, "Description" G
Steering angle sensor BRC-76, "Description"
VDC OFF switch BRC-105, "Description"
H
ABS warning lamp BRC-107, "Description"
Brake warning lamp BRC-108, "Description"
VDC OFF indicator lamp BRC-109, "Description" I
SLIP indicator lamp BRC-110, "Description"
Vacuum sensor (Only VK50VE models) BRC-91, "Description"
J

Revision: 2009 March BRC-35 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
EBD
System Diagram INFOID:0000000003828864

With LDP (VK50VE models)

JSFIA0287GB

With LDP (VQ35HR models)

JSFIA0276GB

Revision: 2009 March BRC-36 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Without LDP (VK50VE models)
A

BRC

H
JSFIA0288GB

Without LDP (VQ35HR models)

I

JSFIA0277GB
P

System Description INFOID:0000000003827938

• Electric Brake force Distribution is a following function. ABS actuator and electric unit (control unit) detects
subtle slippages between the front and rear wheels during braking. Then is electronically controls the rear
braking force (brake fluid pressure) to reducing and reduces rear wheel slippage. Accordingly it improves
vehicle stability.

Revision: 2009 March BRC-37 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
• Electrical system diagnosis by CONSULT-III is available.
Component Parts Location INFOID:0000000003828865

For USA (VK50VE models)

JSFIA0289GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor

Revision: 2009 March BRC-38 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit) A
10. VDC OFF switch 11. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Brake booster

B
D. Inside brake master cylinder cover E. Steering knuckle F. Under center console
G. Instrument driver lower panel H. Rear final drive assembly

For USA (VQ35HR models) C

BRC

JSFIA0273GB

Revision: 2009 March BRC-39 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
10. Rear wheel sensor

A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel
G. Rear final drive assembly

Revision: 2009 March BRC-40 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
Except for USA (VK50VE models)
A

BRC

JSFIA0290GB

P
1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp
4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. Vacuum sensor
7. ABS actuator and electric unit (con- 8. Front wheel sensor 9. Yaw rate/side G sensor
trol unit)
10. VDC OFF switch 11. Rear wheel sensor

Revision: 2009 March BRC-41 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
A. Back of spiral cable assembly B. Combination meter C. Brake booster
D. Inside brake master cylinder cover E. Steering knuckle F. Under center console
G. Instrument driver lower panel H. Rear final drive assembly

Except for USA (VQ35HR models)

JSFIA0274GB

1. Steering angle sensor 2. ABS warning lamp 3. Brake warning lamp

4. VDC OFF indicator lamp 5. SLIP indicator lamp 6. ABS actuator and electric unit (con-
trol unit)

Revision: 2009 March BRC-42 2009 FX35/FX50

 EBD
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
7. Front wheel sensor 8. Yaw rate/side G sensor 9. VDC OFF switch
10. Rear wheel sensor A

A. Back of spiral cable assembly B. Combination meter C. Inside brake master cylinder cover
D. Steering knuckle E. Under center console F. Instrument driver lower panel B
G. Rear final drive assembly

Component Description INFOID:0000000003828866

C

Component parts Reference

Pump D
BRC-59, "Description"
Motor
Actuator relay (main relay) BRC-61, "Description"
E
ABS actuator and electric unit (control unit) Solenoid valve BRC-68, "Description"
Pressure sensor BRC-74, "Description"
VDC switch-over valve BRC
BRC-82, "Description"
(USV1, USV2, HSV1, HSV2)
Wheel sensor BRC-50, "Description"
Yaw rate/side G sensor BRC-79, "Description" G
Steering angle sensor BRC-76, "Description"
VDC OFF switch BRC-105, "Description"
H
ABS warning lamp BRC-107, "Description"
Brake warning lamp BRC-108, "Description"
VDC OFF indicator lamp BRC-109, "Description" I
SLIP indicator lamp BRC-110, "Description"
Vacuum sensor (Only VK50VE models) BRC-91, "Description"
J

Revision: 2009 March BRC-43 2009 FX35/FX50

 DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT-III Function INFOID:0000000003827941

FUNCTION
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.

Diagnostic test mode Function

This mode enables a technician to adjust some devices faster and more accurately by following
Work support
the indications on CONSULT-III.
Self diagnostic result Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the ABS actuator and electric unit (control unit) can be read.
CONSULT-III drives some actuators apart from ABS actuator and electric unit (control unit) and
Active test
also shifts some parameters in a specified range.
ECU identification ABS actuator and electric unit (control unit) part number can be read.
Specific Function Specific LDP data in the ABS actuator and electric unit (control unit) can be read.

WORK SUPPORT
CAUTION:
Erase DTC memory of the lane camera unit after implementing work support. Refer to CCS-436, "CON-
SULT-III Function (LANE CAMERA)".

Item Description
ST ANGLE SENSOR ADJUSTMENT Adjusts the neutral position of the steering angle sensor.

SELF DIAGNOSTIC RESULT

Operation Procedure
Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for approxi-
mately 1 minute.
Display Item List
Refer to BRC-121, "DTC Index".
How to Erase Self-diagnosis Results
After erasing DTC memory, start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approxi-
mately 1 minute as the final inspection, and make sure that the ABS warning lamp, VDC OFF indicator lamp,
SLIP indicator lamp and brake warning lamp turn OFF.
CAUTION:
If memory cannot be erased, perform applicable diagnosis.
NOTE:
• When the wheel sensor malfunctions, after inspecting the wheel sensor system, ABS warning lamp, VDC
OFF indicator lamp, SLIP indicator lamp and brake warning lamp will not turn OFF even when the system is
normal unless the vehicle is driven at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
• Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or in case of brake
fluid level switch operation (when brake fluid is insufficient).
• VDC OFF switch should not stay in “ON” position.
DATA MONITOR
Display Item List

Revision: 2009 March BRC-44 2009 FX35/FX50

 DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
×: Applicable : Optional item
SELECT MONITOR ITEM A
Monitor item (Unit) ECU INPUT Remarks
MAIN SIGNALS
SIGNALS
FR LH SENSOR B
× ×
[km/h (MPH)]
FR RH SENSOR
× ×
[km/h (MPH)] C
Wheel speed
RR LH SENSOR
× ×
[km/h (MPH)]
RR RH SENSOR D
× ×
[km/h (MPH)]
STOP LAMP SW
× × Stop lamp switch signal status
(On/Off) E
BATTERY VOLT Battery voltage supplied to the ABS actuator and electric
× ×
(V) unit (control unit)
SLCT LVR POSI × × A/T selector lever position BRC
YAW RATE SEN
× × Yaw rate detected by yaw rate/side G sensor
(d/s)
OFF SW
× × VDC OFF switch signal status
G
(On/Off)
ACCEL POS SIG Throttle actuator opening/closing is displayed (Linked with
×
(%) accelerator pedal) H
SIDE G-SENSOR
× Transverse G detected by yaw rate/side G sensor
(m/s2)
STR ANGLE SIG I
× Steering angle detected by steering angle sensor
(°)
PRESS SENSOR
× Brake fluid pressure detected by pressure sensor
(bar) J
ENGINE RPM
× Engine speed
[tr/min (rpm)]
FR RH IN SOL
×
K
(On/Off) (Note 1)
FR RH OUT SOL
×
(On/Off) (Note 1) L
FR LH IN SOL
×
(On/Off) (Note 1)
FR LH OUT SOL M
×
(On/Off) (Note 1)
Operation status of each solenoid valve
RR RH IN SOL
×
(On/Off) (Note 1)
N
RR RH OUT SOL
×
(On/Off) (Note 1)
RR LH IN SOL O
×
(On/Off) (Note 1)
RR LH OUT SOL
×
(On/Off) (Note 1)
P
MOTOR RELAY
× Motor and motor relay operation
(On/Off)
ACTUATOR RLY
× Actuator relay operation
(On/Off) (Note 1)
ABS WARN LAMP
× ABS warning lamp
(On/Off)

Revision: 2009 March BRC-45 2009 FX35/FX50

 DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
SELECT MONITOR ITEM
Monitor item (Unit) ECU INPUT Remarks
MAIN SIGNALS
SIGNALS
OFF LAMP
× VDC OFF indicator lamp
(On/Off)
SLIP LAMP
× SLIP indicator lamp
(On/Off)
FLUID LEV SW
Brake fluid level switch signal status
(On/Off)
PARK BRAKE SW
Parking brake switch signal status
(On/Off)
EBD SIGNAL
EBD operation
(On/Off)
ABS SIGNAL
ABS operation
(On/Off)
TCS SIGNAL
TCS operation
(On/Off)
VDC SIGNAL
VDC operation
(On/Off)
ABS FAIL SIG
ABS fail-safe signal
(On/Off)
TCS FAIL SIG
TCS fail-safe signal
(On/Off)
VDC FAIL SIG
VDC fail-safe signal
(On/Off)
CRANKING SIG
Crank operation
(On/Off)
USV[FR-RL]
(On/Off) (Note 1)
USV[FL-RR]
(On/Off) (Note 1)
VDC switch-over valve
HSV[FR-RL]
(On/Off) (Note 1)
HSV[FL-RR]
(On/Off) (Note 1)
BST OPER SIG
Booster operation signal
(On/Off)
V/R OUTPUT
Solenoid valve relay activated
(On/Off)
M/R OUTPUT
Actuator motor and motor relay activated
(On/Off)
LDP) APP SEN Accelerator pedal position sensor status received from
× ×
(%) (Note 2) ECM via CAN communication
LDP) YAW ORDER
— — Calculated target yaw moment
(×100Nm) (Note 2) (Note 3)
LDP) SHIFT POSITION
(OFF/P/R/N/D/MM 1st – MM 7th) × × Shift position received from TCM via CAN communication
(Note 2)
LDP) ICC MAIN SW ICC main switch status received from ECM via CAN com-
× ×
(On/Off) (Note 2) munication
LDP) LDP ON SW LDP ON switch status received from ECM via CAN com-
× ×
(On/Off) (Note 2) munication

Revision: 2009 March BRC-46 2009 FX35/FX50

 DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
SELECT MONITOR ITEM
Monitor item (Unit) Remarks A
ECU INPUT
MAIN SIGNALS
SIGNALS
LDP) WIPER SIGNAL
Front wiper operating condition received from BCM via B
(Stop/PRTCT/1low/1high/Low/High) × ×
CAN communication
(Note 2)
LDP) TURN SIGNAL Turn signal operating condition received from BCM via
× ×
(Off/LH/RH/LH&RH) (Note 2) CAN communication C
LDP) STOP LMP SW
× × Stop lamp switch signal status
(On/Off) (Note 2)
LDP) WARN REQ Status of warning request that transmits to lane camera D
— —
(On/Off) (Note 2) (Note 3) unit via CAN communication
LDP) WARN control
— — Status of warning main controller for LDP
(On/Off) (Note 2) (Note 3) E
LDP) REDY signal Status of internal judgment by LDP controller [ABS actua-
— —
(On/Off) (Note 2) (Note 3) tor and electric unit (control unit)]
LDP) STATUS signal
Status of internal judgment by LDP controller [ABS actua-
BRC
(STANDBY/WARN/MASK/Off) — —
tor and electric unit (control unit)]
(Note 2) (Note 3)
LDP) BRAKE SW
× × Brake switch signal status G
(On/Off) (Note 2)
LDP) LDW SW LDW switch status received from lane camera unit via
× ×
(On/Off) (Note 2) CAN communication
H
LDP) Camera lost
Lane marker detected condition received from lane cam-
(Detect/Deviate/Both) — —
era unit via CAN communication
(Note 2) (Note 3)
LDP) Lane unclear Lane marker condition received from lane camera unit via
I
— —
(On/Off) (Note 2) (Note 3) CAN communication
NOTE:
1: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
J
operation for checking.
2: With LDP models.
3: The item displayed on“SPECIFIC DATA MONITOR” in “Specific Function”. K

ACTIVE TEST
CAUTION:
L
• Do not perform active test while driving vehicle.
• Make sure to completely bleed air from brake system.
• The active test cannot be started when ABS warning lamp, VDC OFF indicator lamp, SLIP indicator
lamp and brake warning lamp are ON. M
• ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are ON
during active test.
• Erase memory of the lane camera unit after implementing active test. Refer to CCS-436, "CONSULT-
N
III Function (LANE CAMERA)".
NOTE:
• When active test is performed while depressing the pedal, the pedal depression amount will change. This is
normal. (Only solenoid valve and ABS motor.) O
• “TEST IS STOPPED” is displayed 10 seconds after operation start.
• After “TEST IS STOPPED” is displayed, to perform test again.
Test Item P

ABS SOLENOID VALVE

• Touch “Up”, “Keep” and “Down”. Then use screen monitor to check that solenoid valve operates as shown in
the table below.

Revision: 2009 March BRC-47 2009 FX35/FX50

 DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]

Display (Note)
Test item Display item
Up Keep Down
FR RH IN SOL Off On On
FR RH OUT SOL Off Off On*
FR RH SOL
USV[FR-RL] Off Off Off
HSV[FR-RL] Off Off Off
FR LH IN SOL Off On On
FR LH OUT SOL Off Off On*
FR LH SOL
USV[FL-RR] Off Off Off
HSV[FL-RR] Off Off Off
RR RH IN SOL Off On On
RR RH OUT SOL Off Off On*
RR RH SOL
USV[FL-RR] Off Off Off
HSV[FL-RR] Off Off Off
RR LH IN SOL Off On On
RR LH OUT SOL Off Off On*
RR LH SOL
USV[FR-RL] Off Off Off
HSV[FR-RL] Off Off Off
*: On for 1 to 2 seconds after the touch, and then Off.
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking.

ABS SOLENOID VALVE (ACT)

• Touch “Up”, “ACT UP” and “ACT KEEP”. Then use screen monitor to check that solenoid valve operates as
shown in the table below.

Display (Note)
Test item Display item
Up ACT UP ACT KEEP
FR RH IN SOL Off Off Off

FR RH ABS SOLENOID FR RH OUT SOL Off Off Off

(ACT) USV[FR-RL] Off On On
HSV[FR-RL] Off On* Off
FR LH IN SOL Off Off Off

FR LH ABS SOLENOID FR LH OUT SOL Off Off Off

(ACT) USV[FL-RR] Off On On
HSV[FL-RR] Off On* Off
RR RH IN SOL Off Off Off

RR RH ABS SOLENOID RR RH OUT SOL Off Off Off

(ACT) USV[FL-RR] Off On On
HSV[FL-RR] Off On* Off
RR LH IN SOL Off Off Off

RR LH ABS SOLENOID RR LH OUT SOL Off Off Off

(ACT) USV[FR-RL] Off On On
HSV[FR-RL] Off On* Off
*: On for 1 to 2 seconds after the touch, and then Off.
NOTE:

Revision: 2009 March BRC-48 2009 FX35/FX50

 DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking. A
ABS MOTOR
• Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table below.
B
Display
Test item Display item
On Off
C
MOTOR RELAY On Off
ABS MOTOR
ACTUATOR RLY (Note) On On
NOTE: D
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking.

ECU IDENTIFICATION E
ABS actuator and electric unit (control unit) part number can be read.
SPECIFIC FUNCTION
BRC
Specific Data Monitor
Specific data monitor displays specific LDP operating conditions.
G
Monitor item (Unit) Remarks
YAW RATE SEN
Yaw rate detected by yaw rate/side G sensor
(d/s) H
LDP) YAW ORDER
Calculated target yaw moment
(×100Nm)
LDP) WARN REQ Status of warning request that transmits to lane camera unit via CAN communi- I
(On/Off) cation
LDP) WARN control
Status of warning main controller for LDP
(On/Off)
J
LDP) REDY signal Status of internal judgment by LDP controller [ABS actuator and electric unit
(On/Off) (control unit)]
LDP) STATUS signal Status of internal judgment by LDP controller [ABS actuator and electric unit K
(STANDBY/WARN/MASK/Off) (control unit)]
LDP) Camera lost Lane marker detected condition received from lane camera unit via CAN com-
(Detect/Deviate/Both) munication
L
LDP) Lane unclear
Lane marker condition received from lane camera unit via CAN communication
(On/Off)

Revision: 2009 March BRC-49 2009 FX35/FX50

 C1101, C1102, C1103, C1104 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

DTC/CIRCUIT DIAGNOSIS
C1101, C1102, C1103, C1104 WHEEL SENSOR
Description INFOID:0000000003827942

When the sensor rotor rotates, the magnetic field changes. Wheel sensor converts the magnetic field changes
to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit).
DTC Logic INFOID:0000000003827943

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

Circuit of rear RH wheel sensor is open. Or when the sen-
C1101 RR RH SENSOR-1
sor power voltage is outside the standard.
Circuit of rear LH wheel sensor is open. Or when the sen- • Harness or connector
C1102 RR LH SENSOR-1
sor power voltage is outside the standard. • Wheel sensor
Circuit of front RH wheel sensor is open. Or when the • ABS actuator and electric unit
C1103 FR RH SENSOR-1 (control unit)
sensor power voltage is outside the standard.
Circuit of front LH wheel sensor is open. Or when the
C1104 FR LH SENSOR-1
sensor power voltage is outside the standard.

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1101”, “C1102”, “C1103” or “C1104” detected?
YES >> Proceed to diagnosis. Refer to BRC-50, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827944

CAUTION:
Do not check between wheel sensor terminals.
1.CHECK TIRES
Check air pressure, wear and size. Refer to WT-76, "Tire Air Pressure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK SENSOR AND SENSOR ROTOR
• Check sensor rotor for damage.
• Check wheel sensor for damage, disconnection or looseness.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair wheel sensor mount or replace sensor rotor. Then perform the self-diagnosis.
3.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect malfunctioning wheel sensor connector.
4. Check terminal to see if it is deformed, disconnected, looseness, etc.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.

Revision: 2009 March BRC-50 2009 FX35/FX50

 C1101, C1102, C1103, C1104 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

4.CHECK WHEEL SENSOR HARNESS A

1. Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel
sensor harness connector. (Also check continuity when steering wheel is turned right and left and when
sensor harness inside the wheel house is moved.)
B
Measurement terminal for power supply circuit
ABS actuator and electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal C
9 E27 (Front RH)
26 E60 (Front LH)
E41 1 Existed D
7 B33 (Rear RH)
6 B34 (Rear LH)

Measurement terminal for signal circuit E

ABS actuator and electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
10 E27 (Front RH) BRC
5 E60 (Front LH)
E41 2 Existed
29 B33 (Rear RH)
G
27 B34 (Rear LH)
2. Check the continuity between ABS actuator and electric unit (control unit) harness connector.
H
ABS actuator and electric unit (control unit)
Continuity
Connector Terminal Connector Terminal
9, 10 I
26, 5
E41 E41 1, 4 Not existed
7, 29
J
6, 27
Is the inspection result normal?
YES >> GO TO 5. K
NO >> Repair or replace damaged parts.
5.CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
L
1. Connect ABS actuator and electric unit (control unit) connector.
2. Turn the ignition switch ON.
CAUTION:
Never start the engine. M
3. Check the voltage between wheel sensor harness connector and ground.

Wheel sensor N
— Voltage
Connector Terminal
E27 (Front RH)
O
E60 (Front LH)
1 Ground 8 V or more
B33 (Rear RH)
B34 (Rear LH) P
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts.
6.CHECK DATA MONITOR
1. Turn the ignition switch OFF.
2. Connect each wheel sensor connector.

Revision: 2009 March BRC-51 2009 FX35/FX50

 C1101, C1102, C1103, C1104 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
3. Check wheel sensor signal. Refer to BRC-52, "Component Inspection".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003827945

1.CHECK DATA MONITOR

On “DATA MONITOR”, select “FR LH SENSOR”, “FR RH SENSOR”, “RR LH SENSOR”, and “RR RH SEN-
SOR”, and check the vehicle speed.

Wheel sensor Condition Vehicle speed (DATA MONITOR)

Vehicle stopped 0 [km/h (MPH)]
FR LH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
Vehicle stopped 0 [km/h (MPH)]
FR RH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
Vehicle stopped 0 [km/h (MPH)]
RR LH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
Vehicle stopped 0 [km/h (MPH)]
RR RH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
NOTE:
Confirm tire pressure is normal.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-50, "Diagnosis Procedure".
Special Repair Requirement INFOID:0000000003827946

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-52 2009 FX35/FX50

 C1105, C1106, C1107, C1108 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1105, C1106, C1107, C1108 WHEEL SENSOR
A
Description INFOID:0000000003828871

When the sensor rotor rotates, the magnetic field changes. Wheel sensor converts the magnetic field changes B
to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit).
DTC Logic INFOID:0000000003827948

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

When the circuit in the rear RH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor
C1105 RR RH SENSOR-2
and sensor rotor is too large and the sensor pulse cannot E
be recognized by the control unit.
When the circuit in the rear LH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor
C1106 RR LH SENSOR-2 BRC
and sensor rotor is too large and the sensor pulse cannot • Harness or connector
be recognized by the control unit. • Wheel sensor
When the circuit in the front RH wheel sensor is short-cir- • ABS actuator and electric unit
cuited. Or when the distance between the wheel sensor (control unit) G
C1107 FR RH SENSOR-2
and sensor rotor is too large and the sensor pulse cannot
be recognized by the control unit.
When the circuit in the front LH wheel sensor is short-cir- H
cuited. Or when the distance between the wheel sensor
C1108 FR LH SENSOR-2
and sensor rotor is too large and the sensor pulse cannot
be recognized by the control unit.
I
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
1. Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute. J
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1105”, “C1106”, “C1107” or “C1108” detected?
K
YES >> Proceed to diagnosis. Refer to BRC-53, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828872
L
CAUTION:
Do not check between wheel sensor terminals.
M
1.CHECK TIRES
Check air pressure, wear and size. Refer to WT-76, "Tire Air Pressure".
Is the inspection result normal? N
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK SENSOR AND SENSOR ROTOR O

• Check sensor rotor for damage.

• Check wheel sensor for damage, disconnection or looseness.
P
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair wheel sensor mount or replace sensor rotor. Then perform the self-diagnosis.
3.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect malfunctioning wheel sensor connector.

Revision: 2009 March BRC-53 2009 FX35/FX50

 C1105, C1106, C1107, C1108 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
4. Check terminal to see if it is deformed, disconnected, looseness, etc.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK WHEEL SENSOR HARNESS
1. Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel
sensor harness connector. (Also check continuity when steering wheel is turned right and left and when
sensor harness inside the wheel house is moved.)
Measurement terminal for power supply circuit
ABS actuator and electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
9 E27 (Front RH)
26 E60 (Front LH)
E41 1 Existed
7 B33 (Rear RH)
6 B34 (Rear LH)

Measurement terminal for signal circuit

ABS actuator and electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
10 E27 (Front RH)
5 E60 (Front LH)
E41 2 Existed
29 B33 (Rear RH)
27 B34 (Rear LH)
2. Check the continuity between ABS actuator and electric unit (control unit) harness connector.

ABS actuator and electric unit (control unit)

Continuity
Connector Terminal Connector Terminal
9, 10
26, 5
E41 E41 1, 4 Not existed
7, 29
6, 27
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Connect ABS actuator and electric unit (control unit) connector.
2. Turn the ignition switch ON.
CAUTION:
Never start the engine.
3. Check the voltage between wheel sensor harness connector and ground.

Wheel sensor
— Voltage
Connector Terminal
E27 (Front RH)
E60 (Front LH)
1 Ground 8 V or more
B33 (Rear RH)
B34 (Rear LH)
Is the inspection result normal?
YES >> GO TO 6.

Revision: 2009 March BRC-54 2009 FX35/FX50

 C1105, C1106, C1107, C1108 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
NO >> Repair or replace damaged parts.
6.CHECK DATA MONITOR A

1. Turn the ignition switch OFF.

2. Connect each wheel sensor connector.
B
3. Check wheel sensor signal. Refer to BRC-55, "Component Inspection".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
C
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003828873

D
1.CHECK DATA MONITOR
On “DATA MONITOR”, select “FR LH SENSOR”, “FR RH SENSOR”, “RR LH SENSOR”, and “RR RH SEN-
SOR”, and check the vehicle speed. E

Wheel sensor Condition Vehicle speed (DATA MONITOR)

Vehicle stopped 0 [km/h (MPH)] BRC
FR LH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
G
Vehicle stopped 0 [km/h (MPH)]
FR RH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
H
Vehicle stopped 0 [km/h (MPH)]
RR LH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
I
Vehicle stopped 0 [km/h (MPH)]
RR RH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
J
NOTE:
Confirm tire pressure is normal.
Is the inspection result normal? K
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-53, "Diagnosis Procedure".
L
Special Repair Requirement INFOID:0000000003828874

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

M
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".
N

>> END
O

Revision: 2009 March BRC-55 2009 FX35/FX50

 C1109 POWER AND GROUND SYSTEM
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1109 POWER AND GROUND SYSTEM
Description INFOID:0000000003827952

Supplies electric power to the ABS actuator and electric unit (control unit).
DTC Logic INFOID:0000000003827953

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• Harness or connector
BATTERY VOLTAGE When the ABS actuator and electric unit (control unit)
C1109 • ABS actuator and electric unit
[ABNORMAL] power supply voltage is lower than normal.
(control unit)

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch OFF to ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1109” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-56, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827954

1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
1. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

ABS actuator and electric unit (control unit)

— Voltage
Connector Terminal
E41 3 Ground Battery voltage
2. Check 30A fusible link (M).
3. Check the continuity between ABS actuator and electric unit (control unit) harness connector and battery
positive terminal.

ABS actuator and electric unit (control unit)

— Continuity
Connector Terminal
Battery positive
E41 3 Existed
terminal
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts. (Check ABS earth bolt for tightness and corrosion.)
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

Revision: 2009 March BRC-56 2009 FX35/FX50

 C1109 POWER AND GROUND SYSTEM
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

ABS actuator and electric unit (control unit) A

— Continuity
Connector Terminal
1
E41 Ground Existed B
4
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). C
NO >> Repair or replace damaged parts. (Check ABS earth bolt for tightness and corrosion.)
Special Repair Requirement INFOID:0000000003828875
D
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua- E
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

BRC
>> END

Revision: 2009 March BRC-57 2009 FX35/FX50

 C1110, C1153, C1170 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1110, C1153, C1170 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)
DTC Logic INFOID:0000000003827956

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

When there is an internal malfunction in the ABS actuator
C1110 CONTROLLER FAILURE
and electric unit (control unit).
ABS actuator and electric unit
When ABS actuator and electric unit (control unit) is mal-
C1153 EMERGENCY BRAKE (control unit)
functioning. (Pressure increase is too much or too little)
C1170 VARIANT CODING In a case where VARIANT CODING is different.

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1110”, “C1153” or “C1170” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-58, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827957

1.REPLACE ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

CAUTION:
Replace ABS actuator and electric unit (control unit) when self-diagnostic result shows items other
than those applicable.

>> Replace ABS actuator and electric unit (control unit).

Special Repair Requirement INFOID:0000000003828876

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-58 2009 FX35/FX50

 C1111 ABS MOTOR, MOTOR RELAY SYSTEM
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
A
Description INFOID:0000000003827959

PUMP B
The pump returns the brake fluid stored in the reservoir to the master cylinder by reducing the pressure.
MOTOR
The motor drives the pump according to the signals transmitted by the ABS actuator and electric unit (control C
unit).
MOTOR RELAY
D
Activates or deactivates motor according to the signals transmitted by the ABS actuator and electric unit (con-
trol unit).
DTC Logic INFOID:0000000003827960 E

DTC DETECTION LOGIC

BRC
DTC Display item Malfunction detected condition Possible cause
During the actuator motor operating with ON, when the
actuator motor turns OFF, or when the control line for ac- G
tuator motor relay is open. • Harness or connector
C1111 PUMP MOTOR • ABS actuator and electric unit
During the actuator motor operating with OFF, when the (control unit)
actuator motor turns ON, or when the control line for relay
is shorted to ground.
H

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE I
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
J
Is DTC “C1111” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-59, "Diagnosis Procedure".
NO >> INSPECTION END
K
Diagnosis Procedure INFOID:0000000003827961

1.CHECK CONNECTOR L
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnect, looseness, etc. M
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts. N
2.CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
Check the voltage between the ABS actuator and electric unit (control unit) harness connector and ground.
O

ABS actuator and electric unit (control unit)

— Voltage
Connector Terminal P
E41 2 Ground Battery voltage
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

Revision: 2009 March BRC-59 2009 FX35/FX50

 C1111 ABS MOTOR, MOTOR RELAY SYSTEM
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

ABS actuator and electric unit (control unit)

— Continuity
Connector Terminal
1
E41 Ground Existed
4
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003827962

1.CHECK ACTIVE TEST

1. On “ACTIVE TEST”, select “ABS MOTOR”.
2. Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table
below.

Display
Test item Display item
On Off
MOTOR RELAY On Off
ABS MOTOR
ACTUATOR RLY (Note) On On
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-59, "Diagnosis Procedure".
Special Repair Requirement INFOID:0000000003828877

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-60 2009 FX35/FX50

 C1114 ACTUATOR RELAY SYSTEM
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1114 ACTUATOR RELAY SYSTEM
A
Description INFOID:0000000003827964

Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and B
electric unit (control unit).
DTC Logic INFOID:0000000003827965

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

During the actuator relay operating with OFF, when the
actuator relay turns ON, or when the control line for the
relay is shorted to the ground. • Harness or connector
C1114 MAIN RELAY • ABS actuator and electric unit
E
During the actuator relay operating with ON, when the (control unit)
actuator relay turns ON, or when the control line for the
relay is open.
BRC
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
G
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1114” detected? H
YES >> Proceed to diagnosis procedure. Refer to BRC-61, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827966 I

1.CHECK CONNECTOR
1. Turn the ignition switch OFF. J
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal? K
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT L

Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
M
ABS actuator and electric unit (control unit)
— Voltage
Connector Terminal
E41 3 Ground Battery voltage N
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts. O

3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground. P

ABS actuator and electric unit (control unit)

— Continuity
Connector Terminal
1
E41 Ground Existed
4

Revision: 2009 March BRC-61 2009 FX35/FX50

 C1114 ACTUATOR RELAY SYSTEM
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003828878

1.CHECK ACTIVE TEST

1. On “ACTIVE TEST”, select “ABS MOTOR”.
2. Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table
below.

Display
Test item Display item
On Off
MOTOR RELAY On Off
ABS MOTOR
ACTUATOR RLY (Note) On On
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-59, "Diagnosis Procedure".
Special Repair Requirement INFOID:0000000003828879

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-62 2009 FX35/FX50

 C1115 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1115 WHEEL SENSOR
A
Description INFOID:0000000003828880

When the sensor rotor rotates, the magnetic field changes. Wheel sensor converts the magnetic field changes B
to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit).
DTC Logic INFOID:0000000003827970

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

• Harness or connector
ABS SENSOR • Wheel sensor
C1115 When wheel sensor input signal is malfunctioning.
[ABNORMAL SIGNAL] • ABS actuator and electric unit E
(control unit)

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE BRC

1. Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
G
Is DTC “C1115” detected?
YES >> Proceed to diagnosis. Refer to BRC-63, "Diagnosis Procedure".
NO >> INSPECTION END H
Diagnosis Procedure INFOID:0000000003828881

CAUTION: I
Do not check between wheel sensor terminals.
1.CHECK TIRES
Check air pressure, wear and size. Refer to WT-76, "Tire Air Pressure". J
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts. K

2.CHECK SENSOR AND SENSOR ROTOR

• Check sensor rotor for damage. L
• Check wheel sensor for damage, disconnection or looseness.
Is the inspection result normal?
YES >> GO TO 3. M
NO >> Repair wheel sensor mount or replace sensor rotor. Then perform the self-diagnosis.
3.CHECK CONNECTOR
N
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect malfunctioning wheel sensor connector.
4. Check terminal to see if it is deformed, disconnected, looseness, etc. O
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts. P
4.CHECK WHEEL SENSOR HARNESS
1. Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel
sensor harness connector. (Also check continuity when steering wheel is turned right and left and when
sensor harness inside the wheel house is moved.)

Revision: 2009 March BRC-63 2009 FX35/FX50

 C1115 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
Measurement terminal for power supply circuit
ABS actuator and electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
9 E27 (Front RH)
26 E60 (Front LH)
E41 1 Existed
7 B33 (Rear RH)
6 B34 (Rear LH)

Measurement terminal for signal circuit

ABS actuator and electric unit (control unit) Wheel sensor
Continuity
Connector Terminal Connector Terminal
10 E27 (Front RH)
5 E60 (Front LH)
E41 2 Existed
29 B33 (Rear RH)
27 B34 (Rear LH)
2. Check the continuity between ABS actuator and electric unit (control unit) harness connector.

ABS actuator and electric unit (control unit)

Continuity
Connector Terminal Connector Terminal
9, 10
26, 5
E41 E41 1, 4 Not existed
7, 29
6, 27
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Connect ABS actuator and electric unit (control unit) connector.
2. Turn the ignition switch ON.
CAUTION:
Never start the engine.
3. Check the voltage between wheel sensor harness connector and ground.

Wheel sensor
— Voltage
Connector Terminal
E27 (Front RH)
E60 (Front LH)
1 Ground 8 V or more
B33 (Rear RH)
B34 (Rear LH)
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts.
6.CHECK DATA MONITOR
1. Turn the ignition switch OFF.
2. Connect each wheel sensor connector.
3. Check wheel sensor signal. Refer to BRC-65, "Component Inspection".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.

Revision: 2009 March BRC-64 2009 FX35/FX50

 C1115 WHEEL SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
Component Inspection INFOID:0000000003828882

A
1.CHECK DATA MONITOR
On “DATA MONITOR”, select “FR LH SENSOR”, “FR RH SENSOR”, “RR LH SENSOR”, and “RR RH SEN-
SOR”, and check the vehicle speed. B

Wheel sensor Condition Vehicle speed (DATA MONITOR)

C
Vehicle stopped 0 [km/h (MPH)]
FR LH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less)
D
Vehicle stopped 0 [km/h (MPH)]
FR RH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less) E
Vehicle stopped 0 [km/h (MPH)]
RR LH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less) BRC
Vehicle stopped 0 [km/h (MPH)]
RR RH SENSOR Vehicle running Nearly matches the speedometer dis-
(Note) play (± 10% or less) G
NOTE:
Confirm tire pressure is normal.
Is the inspection result normal? H
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-63, "Diagnosis Procedure".
I
Special Repair Requirement INFOID:0000000003828883

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION J

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description". K

>> END
L

Revision: 2009 March BRC-65 2009 FX35/FX50

 C1116 STOP LAMP SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1116 STOP LAMP SWITCH
Description INFOID:0000000003827974

The stop lamp switch transmits the stop lamp switch signal (ON/OFF) to the ABS actuator and electric unit
(control unit).
DTC Logic INFOID:0000000003827975

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• Harness or connector
• Stop lamp switch
C1116 STOP LAMP SW When stop lamp switch circuit is open.
• ABS actuator and electric unit
(control unit)

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1116” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-66, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827976

1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect stop lamp switch connector.
4. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to BRC-66, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace stop lamp switch.
3.CHECK STOP LAMP SWITCH CIRCUIT
Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

ABS actuator and electric unit (control unit)

Condition Voltage
Connector Terminal
Brake pedal is depressed Battery voltage
E41 30
Brake pedal is released Approx. 0 V
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003827977

1.CHECK STOP LAMP SWITCH

Revision: 2009 March BRC-66 2009 FX35/FX50
 C1116 STOP LAMP SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
1. Turn the ignition switch OFF.
2. Disconnect stop lamp switch connector. A
3. Check the continuity between stop lamp switch connector terminals.

Stop lamp switch B

Condition Continuity
Terminal
Release stop lamp switch
Existed
1 – 2 (With ICC models) (When brake pedal is depressed.) C
3 − 4 (Without ICC models) Push stop lamp switch
Not existed
(When brake pedal is released.)
Is the inspection result normal? D
YES >> INSPECTION END
NO >> Replace stop lamp switch. Refer to BR-18, "Exploded View".
E
Special Repair Requirement INFOID:0000000003828884

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION BRC

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description". G

>> END
H

Revision: 2009 March BRC-67 2009 FX35/FX50

 C1120, C1122, C1124, C1126 IN ABS SOL
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1120, C1122, C1124, C1126 IN ABS SOL
Description INFOID:0000000003827979

The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit).
DTC Logic INFOID:0000000003827980

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

When the control unit detects a malfunction in the front
C1120 FR LH IN ABS SOL
LH inlet solenoid circuit.
When the control unit detects a malfunction in the front
C1122 FR RH IN ABS SOL
RH inlet solenoid circuit. ABS actuator and electric unit
When the control unit detects a malfunction in the rear LH (control unit)
C1124 RR LH IN ABS SOL
inlet solenoid circuit.
When the control unit detects a malfunction in the rear
C1126 RR RH IN ABS SOL
RH inlet solenoid circuit.

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1120”, “C1122”, “C1124” or “C1126” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-68, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827981

1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

ABS actuator and electric unit (control unit)

— Voltage
Connector Terminal
E41 3 Ground Battery voltage
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

Revision: 2009 March BRC-68 2009 FX35/FX50

 C1120, C1122, C1124, C1126 IN ABS SOL
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

ABS actuator and electric unit (control unit) A

— Continuity
Connector Terminal
1
E41 Ground Existed B
4
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). C
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003827982
D
1.CHECK ACTIVE TEST
1. Select each test menu item on ”ACTIVE TEST“. E
2. On the display, touch “Up”, “Keep” and “Down”, and check that the system operates as shown in the table
below.

Display (Note) BRC

Test item Display item
Up Keep Down
FR RH IN SOL Off On On
G
FR RH OUT SOL Off Off On*
FR RH SOL
USV[FR-RL] Off Off Off
HSV[FR-RL] Off Off Off H
FR LH IN SOL Off On On
FR LH OUT SOL Off Off On*
FR LH SOL I
USV[FL-RR] Off Off Off
HSV[FL-RR] Off Off Off
RR RH IN SOL Off On On J
RR RH OUT SOL Off Off On*
RR RH SOL
USV[FL-RR] Off Off Off
HSV[FL-RR] Off Off Off
K

RR LH IN SOL Off On On
RR LH OUT SOL Off Off On* L
RR LH SOL
USV[FR-RL] Off Off Off
HSV[FR-RL] Off Off Off
*: On for 1 to 2 seconds after the touch, and then Off. M
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking. N
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-68, "Diagnosis Procedure". O

Special Repair Requirement INFOID:0000000003828888

P
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-69 2009 FX35/FX50

 C1121, C1123, C1125, C1127 OUT ABS SOL
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1121, C1123, C1125, C1127 OUT ABS SOL
Description INFOID:0000000003828885

The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit).
DTC Logic INFOID:0000000003827985

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

When the control unit detects a malfunction in the front
C1121 FR LH OUT ABS SOL
LH outlet solenoid circuit.
When the control unit detects a malfunction in the front
C1123 FR RH OUT ABS SOL
RH outlet solenoid circuit. ABS actuator and electric unit
When the control unit detects a malfunction in the rear LH (control unit)
C1125 RR LH OUT ABS SOL
outlet solenoid circuit.
When the control unit detects a malfunction in the rear
C1127 RR RH OUT ABS SOL
RH outlet solenoid circuit.

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1121”, “C1123”, “C1125” or “C1127” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-70, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828886

1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

ABS actuator and electric unit (control unit)

— Voltage
Connector Terminal
E41 3 Ground Battery voltage
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

Revision: 2009 March BRC-70 2009 FX35/FX50

 C1121, C1123, C1125, C1127 OUT ABS SOL
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

ABS actuator and electric unit (control unit) A

— Continuity
Connector Terminal
1
E41 Ground Existed B
4
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). C
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003828887
D
1.CHECK ACTIVE TEST
1. Select each test menu item on ”ACTIVE TEST“. E
2. On the display, touch “Up”, “Keep” and “Down”, and check that the system operates as shown in the table
below.

Display (Note) BRC

Test item Display item
Up Keep Down
FR RH IN SOL Off On On
G
FR RH OUT SOL Off Off On*
FR RH SOL
USV[FR-RL] Off Off Off
HSV[FR-RL] Off Off Off H
FR LH IN SOL Off On On
FR LH OUT SOL Off Off On*
FR LH SOL I
USV[FL-RR] Off Off Off
HSV[FL-RR] Off Off Off
RR RH IN SOL Off On On J
RR RH OUT SOL Off Off On*
RR RH SOL
USV[FL-RR] Off Off Off
HSV[FL-RR] Off Off Off
K

RR LH IN SOL Off On On
RR LH OUT SOL Off Off On* L
RR LH SOL
USV[FR-RL] Off Off Off
HSV[FR-RL] Off Off Off
*: On for 1 to 2 seconds after the touch, and then Off. M
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking. N
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-70, "Diagnosis Procedure". O

Special Repair Requirement INFOID:0000000003828889

P
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-71 2009 FX35/FX50

 C1130 ENGINE SIGNAL
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1130 ENGINE SIGNAL
Description INFOID:0000000003827989

ABS actuator and electric unit (control unit) and ECM exchange the engine signal with CAN communication
line.
DTC Logic INFOID:0000000003827990

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• Harness or connector
• ABS actuator and electric unit
C1130 ENGINE SIGNAL 1 Major engine components are malfunctioning. (control unit)
• ECM
• CAN communication line

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1130” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-72, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827991

1.ECM SELF-DIAGNOSIS
Perform ECM self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
2.ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
1. Erase ABS actuator and electric unit (control unit) self-diagnosis results.
2. Turn the ignition switch OFF.
3. Start the engine. Drive the vehicle for a while.
4. Make sure that malfunction indicator lamp (MIL) turns OFF.
5. Stop the engine. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection
with harness connector. If any items and damaged, repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003828890

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-72 2009 FX35/FX50

 C1137 RAS CIRCUIT
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1137 RAS CIRCUIT
A
Description INFOID:0000000003828925

The ABS actuator and electric unit (control unit) and the RAS control unit exchange signals via the CAN com- B
munication line.
DTC Logic INFOID:0000000003828926

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

• Harness or connector
• ABS actuator and electric unit
C1137 RAS CIRCUIT When RAS control unit is malfunction. (control unit) E
• RAS control unit
• CAN communication line

DTC CONFIRMATION PROCEDURE BRC

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis. G
Is DTC “C1137” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-73, "Diagnosis Procedure".
H
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828920

I
1.CHECK RAS CONTROL UNIT
Perform RAS control unit self-diagnosis.
Is any item indicated on the self-diagnosis display? J
YES >> Repair or replace damaged parts.
NO >> GO TO 2.
2.ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS K

1. Erase ABS actuator and electric unit (control unit) self-diagnosis results.
2. Turn the ignition switch OFF. L
3. Start the engine. Drive the vehicle for a while.
4. Make sure that RAS warning lamp turns OFF.
5. Stop the engine. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is any item indicated on the self-diagnosis display? M
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection
with harness connector. If any items and damaged, repair or replace damaged parts. N

Special Repair Requirement INFOID:0000000003828911

O
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU- P
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-73 2009 FX35/FX50

 C1142 PRESS SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1142 PRESS SENSOR
Description INFOID:0000000003827993

The pressure sensor converts the brake fluid pressure to an electric signal and transmits it to the ABS actuator
and electric unit (control unit). [The pressure sensor is integrated in the ABS actuator and electric unit (control
unit).]
DTC Logic INFOID:0000000003827994

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• Harness or connector
Pressure sensor signal line is open or shorted, or pres- • Stop lamp switch
C1142 PRESS SEN CIRCUIT
sure sensor is malfunctioning. • ABS actuator and electric unit
(control unit)

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1142” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-74, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003827995

1.CHECK STOP LAMP SWITCH CLEARANCE

Check stop lamp switch clearance. Refer to BR-7, "Inspection and Adjustment".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Adjust stop lamp switch clearance. Refer to BR-7, "Inspection and Adjustment".
2.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to BRC-66, "Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunction component.
3.CHECK DATA MONITOR
Check pressure sensor signal. Refer to BRC-75, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> • Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system
fluid leakage, etc.
- Brake pedal: Refer to BR-7, "Inspection and Adjustment".
- Brake booster: Refer to BR-13, "Inspection".
- Master cylinder: Refer to BR-12, "Inspection".
4.ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection
with harness connector. If any items are damaged, repair or replace damaged parts.

Revision: 2009 March BRC-74 2009 FX35/FX50

 C1142 PRESS SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
Component Inspection INFOID:0000000003827996

A
1.CHECK DATA MONITOR
On “DATA MONITOR”, select “PRESS SENSOR” and check the brake fluid pressure.
B

PRESS SENSOR
Condition
(DATA MONITOR)
C
With ignition switch turned ON and brake pedal released. Approx. 0 bar
With ignition switch turned ON and brake pedal depressed. Approx. 0 to 300 bar
Is the inspection result normal? D
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-74, "Diagnosis Procedure".
E
Special Repair Requirement INFOID:0000000003828891

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

BRC
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".
G
>> END
H

Revision: 2009 March BRC-75 2009 FX35/FX50

 C1143 STEERING ANGLE SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1143 STEERING ANGLE SENSOR
Description INFOID:0000000003827998

The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel,
and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication.
DTC Logic INFOID:0000000003827999

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• Harness or connector
• Steering angle sensor
C1143 ST ANG SEN CIRCUIT Steering angle sensor is malfunctioning.
• ABS actuator and electric unit
(control unit)

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1143” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-76, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828000

1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect steering angle sensor connector.
4. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK STEERING ANGLE SENSOR HARNESS
1. Turn ignition switch ON.
CAUTION:
Never start the engine.
2. Check the voltage between steering angle sensor harness connector and ground.

Steering angle sensor

— Voltage
Connector Terminal
M37 8 Ground Battery voltage
3. Turn the ignition switch OFF.
4. Check the continuity between steering angle sensor harness connector and ground.

Steering angle sensor

— Continuity
Connector Terminal
M37 7 Ground Existed
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.

Revision: 2009 March BRC-76 2009 FX35/FX50

 C1143 STEERING ANGLE SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

3.CHECK DATA MONITOR A

1. Connect steering angle sensor connector and ABS actuator and electric unit (control unit) connector.
2. Check steering angle sensor signal. Refer to BRC-77, "Component Inspection".
Is the inspection result normal? B
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Replace steering angle sensor and adjust neutral position of steering angle sensor.
Component Inspection INFOID:0000000003828001 C

1.CHECK DATA MONITOR

D
Select “STR ANGLE SIG” in “DATA MONITOR” and check steering angle sensor signal.

Steering condition STR ANGLE SIG (DATA MONITOR)

E
Driving straight ±2.5 °
Turn 90 ° to right Approx. +90 °
Turn 90 ° to left Approx. −90 ° BRC
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-76, "Diagnosis Procedure". G

Special Repair Requirement INFOID:0000000003828002

H
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the steering
angle sensor or the ABS actuator and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEER- I
ING ANGLE SENSOR NEUTRAL POSITION : Description".

>> END J

Revision: 2009 March BRC-77 2009 FX35/FX50

 C1144 STEERING ANGLE SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1144 STEERING ANGLE SENSOR
DTC Logic INFOID:0000000003828003

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• Harness or connector
• Steering angle sensor
C1144 ST ANG SEN SIGNAL Neutral position of steering angle sensor is not finished.
• ABS actuator and electric unit
(control unit)

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Select “ST ANGLE SENSOR ADJUSTMENT” in “WORK SUPPORT”, and perform adjust the neutral posi-
tion of steering angle sensor.
3. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1144” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-78, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828004

1.CHECK STEERING ANGLE SENSOR

Check steering angle sensor. Refer to BRC-76, "Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003828892

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the steering
angle sensor or the ABS actuator and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEER-
ING ANGLE SENSOR NEUTRAL POSITION : Description".

>> END

Revision: 2009 March BRC-78 2009 FX35/FX50

 C1145, C1146 YAW RATE/SIDE G SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1145, C1146 YAW RATE/SIDE G SENSOR
A
Description INFOID:0000000003828006

The yaw rate/side G sensor detects the yaw rate/side G affecting the vehicle, and transmits the data to the B
ABS actuator and electric unit (control unit) as an analog voltage signal.
DTC Logic INFOID:0000000003828007

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

Yaw rate sensor is malfunctioning, or the yaw rate sensor • Harness or connector
C1145 YAW RATE SENSOR
signal line is open or shorted. • ABS actuator and electric unit
Side G sensor is malfunctioning, or circuit of side G sen- (control unit) E
C1146 SIDE G-SEN CIRCUIT • Yaw rate/side G sensor
sor is open or shorted.

DTC CONFIRMATION PROCEDURE

BRC
1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis. G
Is DTC “C1145” or “C1146” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-79, "Diagnosis Procedure".
NO >> INSPECTION END H
Diagnosis Procedure INFOID:0000000003828008

CAUTION: I
• Sudden turns (such as spin turns, acceleration turns), drifting, etc., when VDC function is off (VDC
OFF switch “ON”) may cause yaw rate/side G sensor system to indicate a malfunction. However, this
is not a malfunction, if normal operation can be resumed after restarting engine. Then erase memory J
of self-diagnosis.
• If vehicle is on turn-table at entrance to parking garage, or on other moving surface, VDC OFF indica-
tor lamp may illuminate and CONSULT-III self-diagnosis may indicate yaw rate sensor system mal-
function. However, in this case there is no malfunction in yaw rate sensor system. Take vehicle off of K
turn-table or other moving surface, and start the engine. Results will return to normal.
1.CHECK CONNECTOR L
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect yaw rate/side G sensor connector.
4. Check terminal for deformation, disconnection, looseness, etc. M
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts. N

2.CHECK YAW RATE/SIDE G SENSOR POWER SUPPLY CIRCUIT

1. Turn the ignition switch ON. O
CAUTION:
Never start the engine.
2. Check the voltage between yaw rate/side G sensor harness connector and ground.
P

Yaw rate/side G sensor

— Voltage
Connector Terminal
M143 4 Ground Battery voltage
3. Turn the ignition switch OFF.
4. Check the voltage between yaw rate/side G sensor harness connector and ground.

Revision: 2009 March BRC-79 2009 FX35/FX50

 C1145, C1146 YAW RATE/SIDE G SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

Yaw rate/side G sensor

— Voltage
Connector Terminal
M143 4 Ground Approx. 0 V
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK YAW RATE/SIDE G SENSOR GROUND CIRCUIT
Check the continuity between yaw rate/side G sensor harness connector and ground.

Yaw rate/side G sensor

— Continuity
Connector Terminal
M143 1 Ground Existed
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK YAW RATE/SIDE G SENSOR HARNESS
Check the continuity between yaw rate/side G sensor harness connector and ABS actuator and electric unit
(control unit) harness connector.

ABS actuator and electric unit (control unit) Yaw rate/side G sensor
Continuity
Connector Terminal Connector Terminal
25 2
E41 M143 Existed
45 3
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts. Refer to BRC-131, "Precautions for Harness Repair".
5.CHECK DATA MONITOR
1. Connect yaw rate/side G sensor connector and ABS actuator and electric unit (control unit) connector.
2. Check yaw rate/side G sensor signal. Refer to BRC-80, "Component Inspection".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Replace yaw rate/side G sensor.
Component Inspection INFOID:0000000003828009

1.CHECK DATA MONITOR

Select “YAW RATE SEN”, “SIDE G-SENSOR” in “DATA MONITOR” and check yaw rate/side G sensor signal.
Yaw rate sensor

YAW RATE SEN

Vehicle condition
(DATA MONITOR)
Vehicle stopped Approx. 0 d/s
Vehicle turning right Negative value
Vehicle turning left Positive value

Revision: 2009 March BRC-80 2009 FX35/FX50

 C1145, C1146 YAW RATE/SIDE G SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
Side G sensor

SIDE G-SENSOR A
Vehicle condition
(DATA MONITOR)
Vehicle stopped Approx. 0 m/s2
B
Vehicle turning right Negative value
Vehicle turning left Positive value
Is the inspection result normal? C
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-79, "Diagnosis Procedure".
Special Repair Requirement INFOID:0000000003828893
D

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

E
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".
BRC
>> END
G

Revision: 2009 March BRC-81 2009 FX35/FX50

 C1147, C1148, C1149, C1150 USV/HSV LINE
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1147, C1148, C1149, C1150 USV/HSV LINE
Description INFOID:0000000003828011

USV1, USV2 (CUT VALVE)

The cut valve shuts off the normal brake fluid path from the master cylinder, when VDC/TCS is activated.
HSV1, HSV2 (SUCTION VALVE)
The suction valve supplies the brake fluid from the master cylinder to the pump, when VDC/TCS is activated.
DTC Logic INFOID:0000000003828012

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

VDC switch-over solenoid valve (USV1) on the primary
C1147 USV LINE[FL-RR] side is open circuit or shorted, or the control line is open
or shorted to the power supply or the ground.
VDC switch-over solenoid valve (USV2) on the primary
C1148 USV LINE[FR-RL] side is open circuit or shorted, or the control line is open
or shorted to the power supply or the ground. • Harness or connector
• ABS actuator and electric unit
VDC switch-over solenoid valve (HSV1) on the primary (control unit)
C1149 HSV LINE[FL-RR] side is open circuit or shorted, or the control line is open
or shorted to the power supply or the ground.
VDC switch-over solenoid valve (HSV2) on the primary
C1150 HSV LINE[FR-RL] side is open circuit or shorted, or the control line is open
or shorted to the power supply or the ground.

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1147”, “C1148”, “C1149” or “C1150” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-82, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828013

1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

ABS actuator and electric unit (control unit)

— Voltage
Connector Terminal
E41 3 Ground Battery voltage
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.

Revision: 2009 March BRC-82 2009 FX35/FX50

 C1147, C1148, C1149, C1150 USV/HSV LINE
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT A
Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

ABS actuator and electric unit (control unit) B

— Continuity
Connector Terminal
1
E41 Ground Existed C
4
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). D
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003828014

E
1.CHECK ACTIVE TEST
1. Select each test menu item on ”ACTIVE TEST“.
2. On the display, touch “Up”, “ACT UP”, and “ACT KEEP”, and check that the system operates as shown in BRC
the table below.

Display (Note) G
Test item Display item
Up ACT UP ACT KEEP
FR RH IN SOL Off Off Off
H
FR RH ABS SOLENOID FR RH OUT SOL Off Off Off
(ACT) USV[FR-RL] Off On On
HSV[FR-RL] Off On* Off I
FR LH IN SOL Off Off Off

FR LH ABS SOLENOID FR LH OUT SOL Off Off Off

(ACT) USV[FL-RR] Off On On J
HSV[FL-RR] Off On* Off
RR RH IN SOL Off Off Off
K
RR RH ABS SOLENOID RR RH OUT SOL Off Off Off
(ACT) USV[FL-RR] Off On On
HSV[FL-RR] Off On* Off L
RR LH IN SOL Off Off Off

RR LH ABS SOLENOID RR LH OUT SOL Off Off Off

M
(ACT) USV[FR-RL] Off On On
HSV[FR-RL] Off On* Off
*: On for 1 to 2 seconds after the touch, and then Off. N
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking. O
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-82, "Diagnosis Procedure". P
Special Repair Requirement INFOID:0000000003828894

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

Revision: 2009 March BRC-83 2009 FX35/FX50

 C1147, C1148, C1149, C1150 USV/HSV LINE
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

>> END

Revision: 2009 March BRC-84 2009 FX35/FX50

 C1154 TRANSMISSION RANGE SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1154 TRANSMISSION RANGE SWITCH
A
Description INFOID:0000000003828016

The ABS actuator and electric unit (control unit) and TCM exchange signals via the CAN communication line. B
DTC Logic INFOID:0000000003828017

DTC DETECTION LOGIC C

DTC Display item Malfunction detected condition Possible cause

• Harness or connector D
TCM internal malfunction or ABS actuator and electric • ABS actuator and electric unit
C1154 PNP POSI SIG
unit (control unit) internal malfunction. (control unit)
• TCM
E
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE BRC
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1154” detected? G
YES >> Proceed to diagnosis procedure. Refer to BRC-85, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828018
H

1.CHECK CONNECTOR
I
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal? J
YES >> GO TO 2.
NO >> Replace or repair damaged parts.
K
2.CHECK TCM
Perform TCM self-diagnosis.
Is the inspection result normal? L
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) M
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is the inspection result normal?
N
YES >> INSPECTION END
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003828019 O

1.CHECK EACH SWITCH

Select “SLCT LVR POSI” in “DATA MONITOR” and check gear position signal. P

SLCT LVR POSI

Gear position
(DATA MONITOR)
P P
R R

Revision: 2009 March BRC-85 2009 FX35/FX50

 C1154 TRANSMISSION RANGE SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
SLCT LVR POSI
Gear position
(DATA MONITOR)
N N
D D
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-85, "Diagnosis Procedure".
Special Repair Requirement INFOID:0000000003828895

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-86 2009 FX35/FX50

 C1155 BRAKE FLUID LEVEL SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1155 BRAKE FLUID LEVEL SWITCH
A
Description INFOID:0000000003828021

The brake fluid level switch converts the brake fluid level to an electric signal and transmits it to the ABS actu- B
ator and electric unit (control unit).
DTC Logic INFOID:0000000003828022

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

Brake fluid level is low or communication line between • Harness or connector
C1155 BR FLUID LEVEL LOW the ABS actuator and electric unit (control unit) and brake • Brake fluid level switch
fluid level switch is open or shorted. • Unified meter and A/C amp. E
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE BRC
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1155” detected? G
YES >> Proceed to diagnosis procedure. Refer to BRC-87, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828023
H

1.CHECK CONNECTOR
I
1. Turn the ignition switch OFF.
2. Disconnect brake fluid level switch connector.
3. Disconnect unified meter and A/C amp. connector.
4. Check terminal for deformation, disconnection, looseness, etc. J
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts. K
2.CHECK BRAKE FLUID LEVEL SWITCH
Check brake fluid level switch. Refer to BRC-88, "Component Inspection". L
Is the inspection result normal?
YES >> GO TO 3.
NO >> Brake fluid level switch is malfunction. Replace reservoir tank. M
3.CHECK BRAKE FLUID LEVEL SWITCH CIRCUIT
1. Check the continuity between brake fluid level switch harness connector and unified meter and A/C amp.
harness connector. N

Unified meter and A/C amp. Brake fluid level switch

Continuity O
Connector Terminal Connector Terminal
M67 57 E47 1 Existed
2. Check the continuity between brake fluid level switch harness connector and ground. P

Brake fluid level switch

— Continuity
Connector Terminal
E47 2 Ground Existed
3. Check the continuity between unified meter and A/C amp. harness connector and ground.

Revision: 2009 March BRC-87 2009 FX35/FX50

 C1155 BRAKE FLUID LEVEL SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

Unified meter and A/C amp.

— Continuity
Connector Terminal
M67 57 Ground Not existed
Is the inspection result normal?
YES >> Replace unified meter and A/C amp.
NO >> Repair or replace damaged parts.
Component Inspection INFOID:0000000003828024

1.CHECK BRAKE FLUID LEVEL SWITCH

1. Turn the ignition switch OFF.
2. Disconnect brake fluid level switch connector.
3. Check the continuity between brake fluid level switch connector terminals.

Brake fluid level switch

Condition Continuity
Terminal
When brake fluid is full in the reservoir tank. Not existed
1−2 When brake fluid is empty in the reservoir
Existed
tank.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace reservoir tank. Refer to BR-29, "Exploded View".
Special Repair Requirement INFOID:0000000003828896

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-88 2009 FX35/FX50

 C1156 STEERING ANGLE SENSOR (CAN)
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1156 STEERING ANGLE SENSOR (CAN)
A
Description INFOID:0000000003838490

The ABS actuator and electric unit (control unit) and the steering angle sensor exchange signals via the CAN B
communication line.
DTC Logic INFOID:0000000003838491

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

• CAN communication line
When there is a malfunction in the CAN communication • ABS actuator and electric unit
C1156 ST ANG SEN COM CIR
circuit or steering angle sensor. (control unit) E
• Steering angle sensor

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE BRC

1. Turn the ignition switch ON.

2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
G
Is DTC “C1156” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-89, "Diagnosis Procedure".
NO >> INSPECTION END H
Diagnosis Procedure INFOID:0000000003838492

1.CHECK CAN COMMUNICATION LINE I

Check CAN communication line. Refer to BRC-99, "Diagnosis Procedure".
Is the inspection result normal?
J
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK STEERING ANGLE SENSOR K
Check steering angle sensor. Refer to BRC-76, "Diagnosis Procedure".
Is the inspection result normal?
YES >> ABS actuator and electric unit (control unit). L
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003838495
M
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua- N
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

O
>> END

Revision: 2009 March BRC-89 2009 FX35/FX50

 C1185 ICC UNIT
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1185 ICC UNIT
Description INFOID:0000000003828026

The ABS actuator and electric unit (control unit) and the ICC sensor integrated unit exchange signals via the
CAN communication line.
DTC Logic INFOID:0000000003828027

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• Harness or connector
• ICC sensor integrated unit
C1185 ACC CONT ICC sensor integrated unit internal malfunction. • ABS actuator and electric unit
(control unit)
• CAN communication line

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1185” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-90, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828028

1.CHECK ICC SENSOR INTEGRATED UNIT CIRCUIT

Perform ICC sensor integrated unit self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES >> Repair or replace damaged parts.
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES >> Repair or replace damaged parts.
NO >> INSPECTION END
Special Repair Requirement INFOID:0000000003828897

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-90 2009 FX35/FX50

 C1197 VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1197 VACUUM SENSOR
A
Description INFOID:0000000003840796

The vacuum sensor converts the vacuum pressure to an electric signal and transmits it to the ABS actuator B
and electric unit (control unit).
DTC Logic INFOID:0000000003840797

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

• Harness or connector
C1197 VACUUM SENSOR When vacuum sensor becomes blocked.
• Vacuum sensor
E
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON. BRC
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1197” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-91, "Diagnosis Procedure". G
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003840798
H
1.CHECK CONNECTOR
1. Turn the ignition switch OFF. I
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect vacuum sensor connector.
4. Check terminal for deformation, disconnection, looseness, etc.
J
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
K
2.CHECK VACUUM SENSOR HARNESS
Check the continuity between vacuum sensor harness connector and ABS actuator and electric unit harness
connector. L

ABS actuator and electric unit

Vacuum sensor
(control unit) Continuity M
Connector Terminal Connector Terminal
1 19
E49 2 E41 15 Existed N
3 12
Is the inspection result normal? O
YES >> Replace brake booster. Refer to BR-33, "Exploded View".
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003840820 P

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

Revision: 2009 March BRC-91 2009 FX35/FX50

 C1197 VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
>> END

Revision: 2009 March BRC-92 2009 FX35/FX50

 C1198 VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1198 VACUUM SENSOR
A
Description INFOID:0000000003840799

The vacuum sensor converts the vacuum pressure to an electric signal and transmits it to the ABS actuator B
and electric unit (control unit).
DTC Logic INFOID:0000000003840800

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

When the circuit of vacuum sensor is open or short-cir- • Harness or connector
C1198 VACUUM SEN CIR
cuited. • Vacuum sensor
E
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON. BRC
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1198” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-93, "Diagnosis Procedure". G
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000004054899
H
1.CHECK CONNECTOR
1. Turn the ignition switch OFF. I
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect vacuum sensor connector.
4. Check terminal for deformation, disconnection, looseness, etc.
J
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
K
2.CHECK VACUUM SENSOR HARNESS
Check the continuity between vacuum sensor harness connector and ABS actuator and electric unit harness
connector. L

ABS actuator and electric unit

Vacuum sensor
(control unit) Continuity M
Connector Terminal Connector Terminal
1 19
E49 2 E41 15 Existed N
3 12
Is the inspection result normal? O
YES >> Replace brake booster. Refer to BR-33, "Exploded View".
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003840819 P

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

Revision: 2009 March BRC-93 2009 FX35/FX50

 C1198 VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
>> END

Revision: 2009 March BRC-94 2009 FX35/FX50

 C1199 VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C1199 VACUUM SENSOR
A
Description INFOID:0000000003840802

The vacuum sensor converts the vacuum pressure to an electric signal and transmits it to the ABS actuator B
and electric unit (control unit).
DTC Logic INFOID:0000000003840803

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

• Harness or connector
When negative pressure of brake booster becomes close • Vacuum sensor
C1199 BRAKE BOOSTER
to zero while the engine is running. • Brake booster E
• Vacuum hose

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE BRC

1. Turn the ignition switch ON.

2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
G
Is DTC “C1199” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-95, "Diagnosis Procedure".
NO >> INSPECTION END H
Diagnosis Procedure INFOID:0000000003840804

1.CHECK BRAKE BOOSTER AND VACUUM HOSE I

Check brake booster and vacuum hose.
• Brake booster: Refer to BR-13, "Inspection".
• Vacuum hose: Refer to BR-38, "Inspection". J
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace brake booster or vacuum hose. K
• Brake booster: Refer to BR-33, "Exploded View".
• Vacuum hose: Refer to BR-37, "Exploded View".
2.CHECK CONNECTOR L
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect vacuum sensor connector. M
4. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 3. N
NO >> Repair or replace damaged parts.
3.CHECK VACUUM SENSOR HARNESS O
Check the continuity between vacuum sensor harness connector and ABS actuator and electric unit (control
unit) harness connector.
P
ABS actuator and electric unit
Vacuum sensor
(control unit) Continuity
Connector Terminal Connector Terminal
1 19
E49 2 E41 15 Existed
3 12

Revision: 2009 March BRC-95 2009 FX35/FX50

 C1199 VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
Is the inspection result normal?
YES >> Replace brake booster. Refer to BR-33, "Exploded View".
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003840818

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-96 2009 FX35/FX50

 C119A VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
C119A VACUUM SENSOR
A
Description INFOID:0000000003840805

The vacuum sensor converts the vacuum pressure to an electric signal and transmits it to the ABS actuator B
and electric unit (control unit).
DTC Logic INFOID:0000000003840806

C
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause D

When the voltage supplied to vacuum sensor is outside ABS actuator and electric unit
C119A VACUUM SEN VOLT
the range of 5 V±0.25 V. (control unit)
E
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON. BRC
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C119A” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-97, "Diagnosis Procedure". G
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003840807
H
1.CHECK CONNECTOR
1. Turn the ignition switch OFF. I
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect vacuum sensor connector.
4. Check terminal for deformation, disconnection, looseness, etc.
J
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
K
2.CHECK VACUUM SENSOR POWER SUPPLY CIRCUIT
1. Connect ABS actuator and electric unit (control unit) connector.
2. Turn the ignition switch ON. L
CAUTION:
Never start the engine.
3. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
M

ABS actuator and electric unit (control unit)

— Voltage
Connector Terminal N
E41 19 Ground 5 V±0.25 V
Is the inspection result normal?
YES >> GO TO 3. O
NO >> Repair or replace damaged parts.
3.CHECK VACUUM SENSOR HARNESS P
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check the continuity between vacuum sensor harness connector and ABS actuator and electric unit (con-
trol unit) harness connector.

Revision: 2009 March BRC-97 2009 FX35/FX50

 C119A VACUUM SENSOR
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

ABS actuator and electric unit

Vacuum sensor
(control unit) Continuity
Connector Terminal Connector Terminal
E49 1 E41 19 Existed
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003840817

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-98 2009 FX35/FX50

 U1000, U1002 CAN COMM CIRCUIT
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
U1000, U1002 CAN COMM CIRCUIT
A
Description INFOID:0000000003828030

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul- B
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
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. C
Each control unit transmits/receives data but selectively reads required data only.
DTC Logic INFOID:0000000003828031
D

DTC DETECTION LOGIC

E
DTC Display item Malfunction detected condition Possible cause
When ABS actuator and electric unit (control unit) is not
U1000 CAN COMM CIRCUIT transmitting or receiving CAN communication signal for 2
seconds or more. • CAN communication line BRC
• ABS actuator and electric unit
When ABS actuator and electric unit (control unit) is not (control unit)
U1002 SYSTEM COMM transmitting or receiving CAN communication signal for 2
seconds or less. G
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE H
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “U1000” or “U1002” detected? I
YES >> Proceed to diagnosis procedure. Refer to BRC-99, "Diagnosis Procedure".
NO >> INSPECTION END
J
Diagnosis Procedure INFOID:0000000003828032

1.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) K

Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “U1000” or “U1002” detected?
YES >> Proceed to diagnosis procedure. Refer to LAN-22, "Trouble Diagnosis Flow Chart". L
NO >> INSPECTION END
Special Repair Requirement INFOID:0000000003828898
M
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU- N
TRAL POSITION : Description".

O
>> END

Revision: 2009 March BRC-99 2009 FX35/FX50

 U1100 CAN COMM CIRCUIT (ICC UNIT)
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
U1100 CAN COMM CIRCUIT (ICC UNIT)
Description INFOID:0000000003828034

The ABS actuator and electric unit (control unit) and the ICC sensor integrated unit exchange signals via the
CAN communication line.
DTC Logic INFOID:0000000003828035

DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause

• CAN communication line
When there is a malfunction in the CAN communication • ABS actuator and electric unit
U1100 ACC COMM CIRCUIT
circuit or ICC sensor integrated unit. (control unit)
• ICC integrated unit

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “U1100” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-100, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000003828036

1.CHECK CAN COMMUNICATION LINE

Check CAN communication line. Refer to BRC-99, "Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK ICC INTEGRATED UNIT
Perform ICC integrated unit self-diagnosis.
Is the inspection result normal?
YES >> ABS actuator and electric unit (control unit).
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003828899

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-100 2009 FX35/FX50

 POWER SUPPLY AND GROUND CIRCUIT
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
POWER SUPPLY AND GROUND CIRCUIT
A
Description INFOID:0000000003828038

Supplies power to ABS actuator and electric unit (control unit). B

Diagnosis Procedure INFOID:0000000003828039

1.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) IGNITION POWER SUPPLY C
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground. D

ABS actuator and electric unit (control unit)

— Voltage E
Connector Terminal
E41 28 Ground Approx. 0 V
4. Turn the ignition switch ON. BRC
CAUTION:
Never start the engine.
5. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
G

ABS actuator and electric unit (control unit)

— Voltage
Connector Terminal H
E41 28 Ground Battery voltage
Is the inspection result normal?
YES >> GO TO 2. I
NO >> Perform the trouble diagnosis for power supply circuit.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY J
1. Turn the ignition switch OFF.
2. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
K
ABS actuator and electric unit (control unit)
— Voltage
Connector Terminal
E41 3 Ground Battery voltage L
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform the trouble diagnosis for power supply circuit. M

3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND

Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground. N

ABS actuator and electric unit (control unit)

— Continuity
Connector Terminal O
1
E41 Ground Existed
4
P
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace damaged parts.
Special Repair Requirement INFOID:0000000003828900

1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Revision: 2009 March BRC-101 2009 FX35/FX50
 POWER SUPPLY AND GROUND CIRCUIT
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
TRAL POSITION : Description".

>> END

Revision: 2009 March BRC-102 2009 FX35/FX50

 PARKING BRAKE SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
PARKING BRAKE SWITCH
A
Component Function Check INFOID:0000000003828040

1.CHECK PARKING BRAKE SWITCH OPERATION B

Operate the parking brake pedal. Then check that the brake warning lamp in the combination meter turns ON/
OFF correctly.
C
Condition Brake warning lamp illumination status
When the parking brake pedal is operation ON
D
When the parking brake pedal is not oper-
OFF
ation.
Is the inspection result normal? E
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-103, "Diagnosis Procedure".
Diagnosis Procedure INFOID:0000000003828041 BRC

1.CHECK PARKING BRAKE SWITCH

Check parking brake switch. Refer to BRC-103, "Component Inspection". G
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace parking brake switch. H

2.CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to MWI-43, "Diagnosis Descrip- I
tion".
Is the inspection result normal?
YES >> GO TO 3. J
NO >> Repair or replace combination meter.
3.CHECK DATA MONITOR
K
On “DATA MONITOR”, select “PARK BRAKE SW” and perform the parking brake switch inspection.

Condition PARK BRAKE SW (DATA MONITOR)

L
Parking brake switch is active ON
Parking brake switch is inactive OFF
Is the inspection result normal? M
YES >> INSPECTION END
NO >> Check unified meter and A/C amp. Refer to MWI-45, "CONSULT-III Function (METER/M&A)".
N
Component Inspection INFOID:0000000003828042

1.CHECK PARKING BRAKE SWITCH O

1. Turn the ignition switch OFF.
2. Disconnect parking brake switch connector.
3. Check the continuity between parking brake switch connector and ground.
P
Parking brake switch
— Condition Continuity
Connector Terminal
When the parking brake switch is operated. Existed
E107 1 Ground
When the parking brake switch is not operated. Not existed
Is the inspection result normal?

Revision: 2009 March BRC-103 2009 FX35/FX50

 PARKING BRAKE SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
YES >> INSPECTION END
NO >> Replace parking brake switch.

Revision: 2009 March BRC-104 2009 FX35/FX50

 VDC OFF SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
VDC OFF SWITCH
A
Description INFOID:0000000003828043

VDC OFF switch can deactivate (turn OFF) the VDC/TCS function by pressing the VDC OFF switch. B
Component Function Check INFOID:0000000003828044

1.CHECK VDC OFF SWITCH OPERATION C

Turn ON/OFF the VDC OFF switch and check that the VDC OFF indicator lamp in the combination meter turns
ON/OFF correctly.
D
Condition VDC OFF indicator lamp illumination status
Press the VDC OFF switch when VDC
ON E
OFF indicator lamp is OFF.
Press the VDC OFF switch when VDC
OFF
OFF indicator lamp is ON.
BRC
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-105, "Diagnosis Procedure".
G
Diagnosis Procedure INFOID:0000000003828045

1.CHECK VDC OFF SWITCH H

Check VDC OFF switch. Refer to BRC-106, "Component Inspection".
Is the inspection result normal?
I
YES >> GO TO 2.
NO >> VDC OFF switch is malfunctioning. Replace VDC OFF switch.
2.CHECK VDC OFF SWITCH HARNESS J
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Disconnect VDC OFF switch connector.
3. Check the continuity between VDC OFF switch connector and ABS actuator and electric unit (control unit) K
connector.

ABS actuator and electric unit

VDC OFF switch L
(control unit) Continuity
Connector Terminal Connector Terminal
E41 31 M19 1 Existed M
4. Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

ABS actuator and electric unit (control unit) N

— Continuity
Connector Terminal
E41 31 Ground Not existed
O
5. Check the continuity between VDC OFF switch harness connector and ground.

VDC OFF switch P

— Continuity
Connector Terminal
M19 2 Ground Existed
Is the inspection result normal?
YES >> GO TO 3.
NO >> If the open or short in harness, repair or replace harness.

Revision: 2009 March BRC-105 2009 FX35/FX50

 VDC OFF SWITCH
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]

3.CHECK COMBINATION METER

1. Connect ABS actuator and electric unit (control unit) connector.
2. Connect VDC OFF switch connector.
3. Check the indication and operation of combination meter are normal. Refer to MWI-43, "Diagnosis
Description".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace combination meter.
Component Inspection INFOID:0000000003828046

1.CHECK VDC OFF SWITCH

1. Turn the ignition switch OFF.
2. Disconnect VDC OFF switch connector.
3. Check the continuity between VDC OFF switch connector terminals.

VDC OFF switch

Condition Continuity
Terminal
When VDC OFF switch is hold pressed. Existed
1−2
When releasing VDC OFF switch. Not existed
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace VDC OFF switch.

Revision: 2009 March BRC-106 2009 FX35/FX50

 ABS WARNING LAMP
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
ABS WARNING LAMP
A
Description INFOID:0000000003828047

×: ON –: OFF B
Condition ABS warning lamp
Ignition switch OFF –
For 1 second after turning ignition switch ON × C
1 second later after turning ignition switch ON –
ABS function is malfunctioning. ×
D
EBD function is malfunctioning. ×
Brake force control function at booster fail is operation. –
E
Component Function Check INFOID:0000000003828048

1.CHECK ABS WARNING LAMP OPERATION BRC

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?
YES >> INSPECTION END G
NO >> Proceed to diagnosis procedure. Refer to BRC-107, "Diagnosis Procedure".
Diagnosis Procedure INFOID:0000000003828049
H
1.CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis.
I
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check items displayed by self-diagnosis. J
2.CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to MWI-43, "Diagnosis Descrip-
tion". K
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace combination meter. L

Revision: 2009 March BRC-107 2009 FX35/FX50

 BRAKE WARNING LAMP
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
BRAKE WARNING LAMP
Description INFOID:0000000003828050

×: ON –: OFF

Condition Brake warning lamp (Note 1)

Ignition switch OFF –
For 1 second after turning ignition switch ON × (Note 2)
1 second later after turning ignition switch ON × (Note 2)
EBD function is malfunctioning. ×
Brake force control function at booster fail is operation. ×
NOTE:
• 1: Brake warning lamp will turn on in case of parking brake operation (when switch is ON) or of brake fluid level switch operation
(when brake fluid is insufficient).
• 2: After starting the engine, brake warning lamp is turned off.

Component Function Check INFOID:0000000003828051

1.BRAKE WARNING LAMP OPERATION CHECK 1

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Proceed to diagnosis procedure. Refer to BRC-108, "Diagnosis Procedure".
2.BRAKE WARNING LAMP OPERATION CHECK 2
Check that the brake warning lamp in the combination meter turns ON/OFF correctly when operating the park-
ing brake pedal.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Check parking brake switch. Refer to BRC-103, "Diagnosis Procedure".
Diagnosis Procedure INFOID:0000000003828052

1.CHECK PARKING BRAKE SWITCH

Check that the brake warning lamp in the combination meter turns ON/OFF correctly when operating the park-
ing brake pedal.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check parking brake switch. Refer to BRC-103, "Diagnosis Procedure".
2.CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check items displayed by self-diagnosis.
3.CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to MWI-43, "Diagnosis Descrip-
tion".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace combination meter.

Revision: 2009 March BRC-108 2009 FX35/FX50

 VDC OFF INDICATOR LAMP
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
VDC OFF INDICATOR LAMP
A
Description INFOID:0000000003828053

×: ON –: OFF B
Condition VDC OFF indicator lamp
Ignition switch OFF –
For 1 second after turning ignition switch ON × C
1 second later after turning ignition switch ON –
VDC OFF switch turned ON. (VDC function is OFF.) ×
D
VDC/TCS function is malfunctioning. ×
ABS function is malfunctioning. ×
EBD function is malfunctioning. × E

Component Function Check INFOID:0000000003828054

BRC
1.VDC OFF INDICATOR LAMP OPERATION CHECK 1
Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal? G
YES >> GO TO 2.
NO >> Proceed to diagnosis procedure. Refer to BRC-109, "Diagnosis Procedure".
2.VDC OFF INDICATOR LAMP OPERATION CHECK 2 H

Check that the VDC OFF indicator lamp in the combination meter turns ON/OFF correctly when operating the
VDC OFF switch.
I
Is the inspection result normal?
YES >> INSPECTION END
NO >> Check VDC OFF switch. Refer to BRC-105, "Diagnosis Procedure".
J
Diagnosis Procedure INFOID:0000000003828055

1.CHECK VDC OFF SWITCH K

Perform the trouble diagnosis for VDC OFF switch. Refer to BRC-105, "Diagnosis Procedure".
Is the inspection result normal?
L
YES >> GO TO 2.
NO >> Check VDC OFF switch. Refer to BRC-105, "Diagnosis Procedure".
2.CHECK SELF-DIAGNOSIS M
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is the inspection result normal?
YES >> GO TO 3. N
NO >> Check items displayed by self-diagnosis.
3.CHECK COMBINATION METER
O
Check if the indication and operation of combination meter are normal. Refer to MWI-43, "Diagnosis Descrip-
tion".
Is the inspection result normal?
P
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace combination meter.

Revision: 2009 March BRC-109 2009 FX35/FX50

 SLIP INDICATOR LAMP
< DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS]
SLIP INDICATOR LAMP
Description INFOID:0000000003828056

×: ON : Blink –: OFF

Condition SLIP indicator lamp

Ignition switch OFF –
For 1 second after turning ignition switch ON ×
1 second later after turning ignition switch ON –

VDC/TCS is activated while driving

VDC/TCS function is malfunctioning. ×

ABS function is malfunctioning. ×
EBD function is malfunctioning. ×

Component Function Check INFOID:0000000003828057

1.CHECK SLIP INDICATOR LAMP OPERATION

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to diagnosis procedure. Refer to BRC-110, "Diagnosis Procedure".
Diagnosis Procedure INFOID:0000000003828058

1.CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check items displayed by self-diagnosis.
2.CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to MWI-43, "Diagnosis Descrip-
tion".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit).
NO >> Repair or replace combination meter.

Revision: 2009 March BRC-110 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]

ECU DIAGNOSIS INFORMATION A

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Reference Value INFOID:0000000003828059
B

VALUES ON THE DIAGNOSIS TOOL

CAUTION: C
The display shows the control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short-circuited.

Data monitor D
Monitor item Display content Reference value in
Condition
normal operation
E
Vehicle stopped 0 [km/h (MPH)]

FR LH SENSOR Wheel speed Nearly matches the

Vehicle running
speedometer dis-
(Note 1) BRC
play (± 10% or less)
Vehicle stopped 0 [km/h (MPH)]

FR RH SENSOR Wheel speed Nearly matches the

Vehicle running G
speedometer dis-
(Note 1)
play (± 10% or less)
Vehicle stopped 0 [km/h (MPH)]
H
RR LH SENSOR Wheel speed Nearly matches the
Vehicle running
speedometer dis-
(Note 1)
play (± 10% or less)
Vehicle stopped 0 [km/h (MPH)] I

RR RH SENSOR Wheel speed Nearly matches the

Vehicle running
speedometer dis-
(Note 1)
play (± 10% or less) J
When brake pedal is depressed On
STOP LAMP SW Stop lamp switch signal status
When brake pedal is not depressed Off
K
Battery voltage supplied to the ABS ac-
BATTERY VOLT Ignition switch ON 10 – 16 V
tuator and electric unit (control unit)
P position P
R position R L
SLCT LVR POSI A/T selector lever position
N position N
D position D
Vehicle stopped Approx. 0 d/s M
Yaw rate detected by yaw rate/side G
YAW RATE SEN Vehicle turning right Negative value
sensor
Vehicle turning left Positive value
N
Accelerator pedal not depressed
Throttle actuator opening/closing is 0%
(ignition switch is ON)
ACCEL POS SIG displayed (linked with accelerator ped-
al) Depress accelerator pedal
0 - 100 % O
(ignition switch is ON)
Vehicle stopped Approx. 0 m/s2
Transverse G detected by side G sen-
SIDE G-SENSOR Vehicle turning right Negative value
sor P
Vehicle turning left Positive value
Driving straight ±2.5°
Steering angle detected by steering an-
STR ANGLE SIG Turn 90° to right Approx. +90°
gle sensor
Turn 90° to left Approx. –90°

Revision: 2009 March BRC-111 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
Data monitor
Monitor item Display content Reference value in
Condition
normal operation
With ignition switch turned ON and brake
Approx. 0 bar
Brake fluid pressure detected by pres- pedal released
PRESS SENSOR
sure sensor With ignition switch turned ON and brake
Approx. 0 to 300 bar
pedal depressed
With engine stopped 0 [tr/min (rpm)]

ENGINE RPM With engine running Almost in accor-

Engine running dance with tachome-
ter display
When VDC OFF switch ON
On
(VDC OFF indicator lamp ON)
OFF SW VDC OFF switch signal status
When VDC OFF switch OFF
Off
(VDC OFF indicator lamp OFF)
When brake fluid level switch ON On
FLUID LEV SW Brake fluid level switch signal status
When brake fluid level switch OFF Off
Parking brake switch is active On
PARK BRAKE SW Parking brake switch signal status
Parking brake switch is inactive Off
Actuator (solenoid valve) is active (“AC-
On
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
FR RH IN SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON)
Actuator (solenoid valve) is active (“AC-
On
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
FR RH OUT SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON)
Actuator (solenoid valve) is active (“AC-
On
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
FR LH IN SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON)
Actuator (solenoid valve) is active (“AC-
On
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
FR LH OUT SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON)
Actuator (solenoid valve) is active (“AC-
On
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
RR RH IN SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON)
Actuator (solenoid valve) is active (“AC-
On
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
RR RH OUT SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON)
Actuator (solenoid valve) is active (“AC-
On
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
RR LH IN SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON)

Revision: 2009 March BRC-112 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
Data monitor
Monitor item Display content A
Reference value in
Condition
normal operation
Actuator (solenoid valve) is active (“AC-
On B
TIVE TEST” with CONSULT-III)
Operation status of each solenoid
RR LH OUT SOL When the actuator (solenoid valve) is not
valve
active and actuator relay is active (igni- Off
tion switch ON) C
When the motor relay and motor are op-
On
erating
MOTOR RELAY Motor and motor relay operation
When the motor relay and motor are not D
Off
operating

ACTUATOR RLY When the actuator relay is operating On

Actuator relay operation
(Note 2) When the actuator relay is not operating Off E

ABS warning lamp When ABS warning lamp is ON On

ABS WARN LAMP
(Note 3) When ABS warning lamp is OFF Off
BRC
VDC OFF indicator lamp When VDC OFF indicator lamp is ON On
OFF LAMP
(Note 3) When VDC OFF indicator lamp is OFF Off

SLIP indicator lamp When SLIP indicator lamp is ON On G

SLIP LAMP
(Note 3) When SLIP indicator lamp is OFF Off
EBD is active On
EBD SIGNAL EBD operation H
EBD is inactive Off
ABS is active On
ABS SIGNAL ABS operation
ABS is inactive Off I
TCS is active On
TCS SIGNAL TCS operation
TCS is inactive Off
J
VDC is active On
VDC SIGNAL VDC operation
VDC is inactive Off
In ABS fail-safe On K
ABS FAIL SIG ABS fail-safe signal
ABS is normal Off
In TCS fail-safe On
TCS FAIL SIG TCS fail-safe signal L
TCS is normal Off
In VDC fail-safe On
VDC FAIL SIG VDC fail-safe signal
VDC is normal Off
M
Crank is active On
CRANKING SIG Crank operation
Crank is inactive Off
When actuator (switch-over valve) is ac- N
On
tive (“ACTIVE TEST” with CONSULT-III)
USV [FL-RR]
VDC switch-over valve When actuator (switch-over valve) is not
(Note 2)
active and actuator relay is active (igni- Off O
tion switch ON)
When actuator (switch-over valve) is ac-
On
tive (“ACTIVE TEST” with CONSULT-III)
USV [FR-RL] P
VDC switch-over valve When actuator (switch-over valve) is not
(Note 2)
active and actuator relay is active (igni- Off
tion switch ON)

Revision: 2009 March BRC-113 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
Data monitor
Monitor item Display content Reference value in
Condition
normal operation
When actuator (switch-over valve) is ac-
On
tive (“ACTIVE TEST” with CONSULT-III)
HSV [FL-RR]
VDC switch-over valve When actuator (switch-over valve) is not
(Note 2)
active and actuator relay is active (igni- Off
tion switch ON)
When actuator (switch-over valve) is ac-
On
tive (“ACTIVE TEST” with CONSULT-III)
HSV [FR-RL]
VDC switch-over valve When actuator (switch-over valve) is not
(Note 2)
active and actuator relay is active (igni- Off
tion switch ON)
Booster is active On
BST OPER SIG Booster operation signal
Booster is inactive Off
When the solenoid valve relay is active
On
V/R OUTPUT (When ignition switch OFF)
Solenoid valve relay activated
(Note 2) When the solenoid valve relay is not ac-
Off
tive (in the fail-safe mode)
When the actuator motor and motor relay
are active On
Actuator motor and motor relay activat- (“ACTIVE TEST” with CONSULT-III)
M/R OUTPUT
ed
When the actuator motor and motor relay
Off
are inactive
Accelerator pedal is not depressed (Igni-
0%
LDP) APP SEN Accelerator pedal position sensor sta- tion switch ON)
(Note 4) tus Depress accelerator pedal
0 - 100 %
(Ignition switch ON)

LDP)YAW ORDER LDP is controlling to right side deviation Negative value

Calculated target yaw moment status
(Note 4) (Note 5) LDP is controlling to left side deviation Positive value
Shift position is not received Off
LDP) SHIFT POSITION
Shift position Selector lever position P/R/N/D
(Note 4)
When using manual mode MM 1st – MM 7th

LDP) ICC MAIN SW ICC main switch is ON On

ICC main switch
(Note 4) ICC main switch is OFF Off

LDP) LDP ON SW LDP ON switch is ON On

LDP ON switch
(Note 4) LDP ON switch is OFF Off
Front wiper is OFF. Stop
Front wiper stops at fail-safe operation PRTCT
LDP) WIPER SIGNAL
Front wiper operation Front wiper INT is operating. 1low
(Note 4)
Front wiper LO is operating. Low
Front wiper HI is operating. High
Turn signal is OFF. Off

LDP) TURN SIGNAL Turn signal lamp RH is blinking. LH

Turn signal operation
(Note 4) Turn signal lamp LH is blinking. RH
Turn signal lamp LH and RH are blinking. LH&RH

LDP) STOP LMP SW When brake pedal is depressed On

Stop lamp switch signal status
(Note 4) When brake pedal is not depressed Off

LDP) BRAKE SW When brake pedal is not depressed On

Brake switch signal status
(Note 4) When brake pedal is depressed Off

Revision: 2009 March BRC-114 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
Data monitor
Monitor item Display content A
Reference value in
Condition
normal operation
Lane departure warning is operating.
LDP) WARN REQ On B
Lane departure warning request status (When using LDP)
(Note 4) (Note 5)
Lane departure warning is not operating. Off

LDP)WARN CONTROL When using LDP On

Warning main controller status C
(Note 4) (Note 5) When using LDW Off

LDP)REDY SIGNAL LDP control is ready. On

LDP ready status
(Note 4) (Note 5) LDP control is not ready. Off D
LDP control is standby. STANDBY
Lane departure warning is operating.
LDP)STATUS SIGNAL WARN E
LDP control status (When using LDP)
(Note 4) (Note 5)
LDP control is stopped. MASK
LDP control is OFF. Off
BRC
LDW switch is ON
On
LDP) LDW SW (LDW ON indicator is ON)
LDW switch condition
(Note 4) LDW switch is OFF
Off G
(LDW ON indicator is OFF)
Both side lane markers are detected. Detect
LDP)CAMERA LOST
Lane marker detected condition Deviate side lane marker is lost. Deviate H
(Note 4) (Note 5)
Both side lane markers are lost. Both

LDP)LANE UNCLEAR Lane marker is unclear. On

Lane marker condition
(Note 4) (Note 5) Lane marker is clear. Off I
NOTE:
• 1: Confirm tire pressure is normal.
J
• 2: A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an
operation for checking.
• 3: On and off timing for warning lamp and indicator lamp.
- ABS warning lamp: Refer to BRC-107, "Description". K
- Brake warning lamp: Refer to BRC-108, "Description".
- VDC OFF indicator lamp: Refer to BRC-109, "Description".
- SLIP indicator lamp: Refer to BRC-110, "Description". L
- Lane departure warning lamp: Refer to CCS-428, "System Description".
• 4: With LDP models.
• 5:The item displayed on “SPECIFIC DATA MONITOR” in “Specific Function”. M

Revision: 2009 March BRC-115 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
Wiring Diagram - BRAKE CONTROL SYSTEM - INFOID:0000000003828060

JCFWM0185GB

Revision: 2009 March BRC-116 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]

BRC

JCFWM0186GB

Revision: 2009 March BRC-117 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]

JCFWM0187GB

Revision: 2009 March BRC-118 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]

BRC

JCFWM0188GB

Revision: 2009 March BRC-119 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]

JCFWM0189GB

Fail-Safe INFOID:0000000003828061

ABS, EBD SYSTEM

If ABS malfunction electrically, ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp will turn on. If
EBD malfunction electrically, brake warning lamp, ABS warning lamp, VDC OFF indicator lamp and SLIP indi-
cator lamp will turn on. Simultaneously, the VDC/TCS/ABS become one of the following conditions of the fail-
safe function.

Revision: 2009 March BRC-120 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
• For malfunction of ABS, only the EBD is activated and the condition of vehicle is the same condition of vehi-
cles without TCS/ABS system. A
NOTE:
ABS self-diagnosis sound may be heard. That is a normal condition because a self-diagnosis for “Ignition
switch ON” and “The first starting” are being performed.
B
• For malfunction of EBD, EBD and ABS become inoperative, and the condition of vehicle is the same as the
condition of vehicles without TCS/ABS, EBD system.
VDC/TCS C
If VDC/TCS/ABS system malfunction electrically, VDC OFF indicator lamp, SLIP indicator lamp are turned on,
and the condition of vehicle is the same as the condition of vehicles without VDC/TCS control.
CAUTION:
If the Fail-Safe function is activated, then perform self-diagnosis for VDC/TCS/ABS control system. D

LDW/LDP SYSTEM
• In case of malfunction in the LDW/LDP system, lane departure warning lamp is turned ON, and the condition
E
of vehicle is the same as the condition of vehicles without LDW/LDP control.
• In case of malfunction in the VDC/TCS/ABS system, lane departure warning lamp is turned ON, and the
condition of vehicle is the same as the condition of vehicles without LDW/LDP control.
BRC
DTC Index INFOID:0000000003828062

DTC Items (CONSULT screen terms) Reference G

C1101 RR RH SENSOR-1
C1102 RR LH SENSOR-1
BRC-50, "DTC Logic" H
C1103 FR RH SENSOR-1
C1104 FR LH SENSOR-1
C1105 RR RH SENSOR-2 I
C1106 RR LH SENSOR-2
BRC-53, "DTC Logic"
C1107 FR RH SENSOR-2
J
C1108 FR LH SENSOR-2
C1109 BATTERY VOLTAGE [ABNORMAL] BRC-56, "DTC Logic"
C1110 CONTROLLER FAILURE BRC-58, "DTC Logic" K
C1111 PUMP MOTOR BRC-59, "DTC Logic"
C1114 MAIN RELAY BRC-61, "DTC Logic"
L
C1115 ABS SENSOR [ABNORMAL SIGNAL] BRC-63, "DTC Logic"
C1116 STOP LAMP SW BRC-66, "DTC Logic"
C1120 FR LH IN ABS SOL BRC-68, "DTC Logic" M
C1121 FR LH OUT ABS SOL BRC-70, "DTC Logic"
C1122 FR RH IN ABS SOL BRC-68, "DTC Logic"
C1123 FR RH OUT ABS SOL BRC-70, "DTC Logic"
N

C1124 RR LH IN ABS SOL BRC-68, "DTC Logic"

C1125 RR LH OUT ABS SOL BRC-70, "DTC Logic"
O
C1126 RR RH IN ABS SOL BRC-68, "DTC Logic"
C1127 RR RH OUT ABS SOL BRC-70, "DTC Logic"
C1130 ENGINE SIGNAL 1 BRC-72, "DTC Logic" P
C1137 RAS CIRCUIT (Note 1) BRC-73, "DTC Logic"
C1142 PRESS SEN CIRCUIT BRC-74, "DTC Logic"
C1143 ST ANG SEN CIRCUIT BRC-76, "DTC Logic"
C1144 ST ANG SEN SIGNAL BRC-78, "DTC Logic"

Revision: 2009 March BRC-121 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
DTC Items (CONSULT screen terms) Reference
C1145 YAW RATE SENSOR
BRC-79, "DTC Logic"
C1146 SIDE G-SEN CIRCUIT
C1147 USV LINE [FL-RR]
C1148 USV LINE [FR-RL]
BRC-82, "DTC Logic"
C1149 HSV LINE [FL-RR]
C1150 HSV LINE [FR-RL]
C1153 EMERGENCY BRAKE BRC-58, "DTC Logic"
C1154 PNP POSI SIG BRC-85, "DTC Logic"
C1155 BR FLUID LEVEL LOW BRC-87, "DTC Logic"
C1156 ST ANG SEN COM CIR BRC-89, "DTC Logic"
C1170 VARIANT CORDING BRC-58, "DTC Logic"
C1185 ACC CONT (Note 2) BRC-90, "DTC Logic"
C1197 VACUUM SENSOR (Note 3) BRC-91, "DTC Logic"
C1198 VACUUM SEN CIR (Note 3) BRC-93, "DTC Logic"
C1199 BRAKE BOOSTER (Note 3) BRC-95, "DTC Logic"
C119A VACUUM SEN VOLT (Note 3) BRC-97, "DTC Logic"
U1000 CAN COMM CIRCUIT
BRC-99, "DTC Logic"
U1002 SYSTEM COMM
U1100 ACC COMM CIRCUIT (Note 2) BRC-100, "DTC Logic"
C1B00 LDP) CAMERA MALF (Note 4) CCS-445, "DTC Logic"
C1B04 LDP) ICC STG SW MALF (Note 4) CCS-457, "DTC Logic"
C1B05 LDP) APP SEN MALF (Note 4) CCS-458, "DTC Logic"
C1B06 LDP) TCM MALF (Note 4) CCS-459, "DTC Logic"
U0100 LDP) ECM CAN CIR2 (Note 4) CCS-460, "DTC Logic"
U0101 LDP) TCM CAM CAN CIR2 (Note 4) CCS-462, "DTC Logic"
U0104 LDP) ICC CAM CAN CIR2 (Note 4) CCS-464, "DTC Logic"
U0405 LDP) ICC CAM CAN CIR1 (Note 4) CCS-465, "DTC Logic"
U1500 LDP) CAM CAN CIR1 (Note 4) CCS-466, "DTC Logic"
U1501 LDP) CAM CAN CIR2 (Note 4) CCS-467, "DTC Logic"
NOTE:
1: With RAS models
2: With ICC models
3: With VK50VE models
4: With LDP models

Revision: 2009 March BRC-122 2009 FX35/FX50

 EXCESSIVE ABS FUNCTION OPERATION FREQUENCY
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]

SYMPTOM DIAGNOSIS A
EXCESSIVE ABS FUNCTION OPERATION FREQUENCY
Diagnosis Procedure INFOID:0000000003828063
B

1.CHECK START
Check front and rear brake force distribution using a brake tester. Refer to BR-65, "General Specifications". C
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check brake system. D
2.CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear axles. E
• Front
- 2WD models: Refer to FAX-5, "Inspection".
- AWD models: Refer to FAX-14, "Inspection".
• Rear: Refer to RAX-6, "Inspection". BRC
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning components. G
3.CHECK WHEEL SENSOR AND SENSOR ROTOR
Check the following. H
• Wheel sensor installation for damage.
• Sensor rotor installation for damage.
• Wheel sensor connector connection.
• Wheel sensor harness inspection. I
Is the inspection result normal?
YES >> GO TO 4.
NO >> • Replace wheel sensor or sensor rotor. J
• Repair harness.
4.CHECK ABS WARNING LAMP DISPLAY K
Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
Is the ABS warning lamp illuminated?
YES >> Perform self-diagnosis. L
NO >> Normal

Revision: 2009 March BRC-123 2009 FX35/FX50

 UNEXPECTED PEDAL REACTION
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]
UNEXPECTED PEDAL REACTION
Diagnosis Procedure INFOID:0000000003828064

1.CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Refer to BR-7, "Inspection and Adjustment".
Is the stroke too large?
YES >> • Bleed air from brake tube and hose. Refer to BR-11, "Bleeding Brake System".
• Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system
fluid leakage, etc.
- Brake pedal: Refer to BR-7, "Inspection and Adjustment".
- Brake booster: Refer to BR-13, "Inspection".
- Master cylinder: Refer to BR-12, "Inspection".
NO >> GO TO 2.
2.CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition. Connect connector after inspection.
Is the inspection result normal?
YES >> Normal
NO >> Check brake system.

Revision: 2009 March BRC-124 2009 FX35/FX50

 THE BRAKING DISTANCE IS LONG
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]
THE BRAKING DISTANCE IS LONG
A
Diagnosis Procedure INFOID:0000000003828065

CAUTION: B
The stopping distance on slippery road surfaces might be longer when the ABS is operating than
when the ABS is not operating.
1.CHECK FUNCTION C
Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector to deactivate
ABS. In this condition, check stopping distance. After inspection, connect connector.
Is the inspection result normal? D
YES >> Normal
NO >> Check brake system.
E

BRC

Revision: 2009 March BRC-125 2009 FX35/FX50

 ABS FUNCTION DOES NOT OPERATE
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]
ABS FUNCTION DOES NOT OPERATE
Diagnosis Procedure INFOID:0000000003828066

CAUTION:
ABS does not operate when speed is 10 km/h (6 MPH) or lower.
1.CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp turns OFF after ignition switch is turned ON or when driving.
Is the inspection result normal?
YES >> Normal
NO >> Perform self-diagnosis.

Revision: 2009 March BRC-126 2009 FX35/FX50

 PEDAL VIBRATION OR ABS OPERATION SOUND OCCURS
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]
PEDAL VIBRATION OR ABS OPERATION SOUND OCCURS
A
Diagnosis Procedure INFOID:0000000003828067

CAUTION: B
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed (just place a foot on it). However, this is normal.
• When shifting gears
• When driving on slippery road C
• During cornering at high speed
• When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]
• When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher] D
1.SYMPTOM CHECK 1
Check that there are pedal vibrations when the engine is started.
E
Do vibrations occur?
YES >> GO TO 2.
NO >> Inspect the brake pedal.
BRC
2.SYMPTOM CHECK 2
Check that there are ABS operation noises when the engine is started.
Do the operation noises occur? G
YES >> GO TO 3.
NO >> Perform self-diagnosis.
3.SYMPTOM CHECK 3 H

Check symptoms when electrical component (headlamps, etc.) switches are operated.
Do symptoms occur? I
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,
move it farther away.
NO >> Normal J

Revision: 2009 March BRC-127 2009 FX35/FX50

 VEHICLE JERKS DURING VDC/TCS/ABS CONTROL
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]
VEHICLE JERKS DURING VDC/TCS/ABS CONTROL
Diagnosis Procedure INFOID:0000000003828068

1.SYMPTOM CHECK
Check if the vehicle jerks during VDC/TCS/ABS control.
Is the inspection result normal?
YES >> Normal.
NO >> GO TO 2.
2.CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis of ABS actuator and electric unit (control unit).
Are self-diagnosis results indicated?
YES >> Check corresponding items, make repairs, and perform ABS actuator and electric unit (control
unit) self-diagnosis.
NO >> GO TO 3.
3.CHECK CONNECTOR
• Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector and check
terminal for deformation, disconnection, looseness, etc.
• Securely connect connectors and perform ABS actuator and electric unit (control unit) self-diagnosis.
Are self-diagnosis results indicated?
YES >> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.
NO >> GO TO 4.
4.CHECK ECM AND TCM SELF-DIAGNOSIS RESULTS
Perform ECM self-diagnosis and TCM self-diagnosis.
Are self-diagnosis results indicated?
YES >> Check the corresponding items.
NO >> Replace ABS actuator and electric unit (control unit).

Revision: 2009 March BRC-128 2009 FX35/FX50

 NORMAL OPERATING CONDITION
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]
NORMAL OPERATING CONDITION
A
Description INFOID:0000000003828069

B
Symptom Result
Slight vibrations are felt on the brake pedal and the operation noises occur, when VDC, TCS or ABS is acti-
vated.
C
This is a normal condi-
Stopping distance is longer than that of vehicles without ABS when the vehicle drives on rough, gravel, or
tion due to the VDC,
snow-covered (fresh, deep snow) roads.
TCS or ABS activation.
The brake pedal moves and generates noises, when TCS or VDC is activated due to rapid acceleration or D
sharp turn.
This is a normal, and it is
The brake pedal vibrates and motor operation noises occur from the engine room, after the engine starts and
caused by the ABS op-
just after the vehicle starts.
eration check.
E

Depending on the road conditions, the driver may experience a sluggish feel. This is normal, because
TCS places the highest
TCS may activate momentarily if wheel speed changes when driving over location where friction coefficient priority on the optimum BRC
varies, when downshifting, or when fully depressing accelerator pedal. traction (stability).
The ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp may turn ON when the vehicle is
In this case, restart the
subject to strong shaking or large vibration, such as when the vehicle is rotating on a turntable or located on G
engine on a normal
a ship while the engine is running.
road. If the normal con-
VDC may not operate normally or the ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp dition is restored, there
may illuminate, when running on a special road that is extremely slanted (e.g. bank in a circuit course). is no malfunction. At
H
that time, erase the self-
A malfunction may occur in the yaw rate/side G sensor system, when the vehicle turns sharply, such as dur-
diagnosis memory.
ing a spin turn, axle turn, or drift driving, while the VDC function is off (VDC OFF indicator lamp illuminated).
Normal (Deactivate the I
VDC/TCS function be-
The vehicle speed will not increase even though the accelerator pedal is depressed, when inspecting the
fore performing an in-
speedometer on a 2-wheel chassis dynamometer.
spection on a chassis
dynamometer.) J
This is not a VDC sys-
VDC OFF indicator lamp and SLIP indicator lamp may simultaneously turn on when low tire pressure warn- tem error but results
ing lamp turns on. from characteristic
K
change of tire.
This is a normal condi-
tion due to the “Brake-
Slight vibrations are felt on the brake pedal and the operation noises occur, when “Brake force control func- L
force control function
tion at braking hard” is activated.
atbraking hard” activa-
tion.
M

Revision: 2009 March BRC-129 2009 FX35/FX50

 PRECAUTIONS
< PRECAUTION > [VDC/TCS/ABS]

PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000005189742

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
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 performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
• 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 har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Brake System INFOID:0000000003828071

WARNING:
Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.
• Only use “DOT 3” brake fluid. Refer to MA-12, "Fluids and Lubricants".
• Never reuse drained brake fluid.
• Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off
immediately and wash with water if it gets on a painted surface.
• Never use mineral oils such as gasoline or light oil. They may damage rubber parts and cause improper
operation.
• Always loosen the brake tube flare nut with a flare nut wrench.
• Tighten the brake tube flare nut to the specified torque with a crow-
foot (A) and torque wrench (B).
• Always conform the specified tightening torque when installing the
brake pipes.
• Brake system is an important safety part. If a brake fluid leak is
detected, always disassemble the affected part. If a malfunction is
detected, replace part with a new one.
• Turn the ignition switch OFF and disconnect the ABS actuator and
electric unit (control unit) connector or the battery negative terminal
before performing the work.
JPFIA0001ZZ

Revision: 2009 March BRC-130 2009 FX35/FX50

 PRECAUTIONS
< PRECAUTION > [VDC/TCS/ABS]
Precaution for Brake Control INFOID:0000000003828072

A
• When starting engine or when starting vehicle just after starting engine, brake pedal may vibrate or motor
operating noise may be heard from engine compartment. This is normal condition.
• When an error is indicated by ABS or another warning lamp, collect all necessary information from customer B
(what symptoms are present under what conditions) and check for estimate causes before starting diagnos-
tic servicing. Besides electrical system inspection, check brake booster operation, brake fluid level, and oil
leaks.
• If tire size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts, C
stopping distance or steering stability may deteriorate.
• ABS might be out of order or malfunctions by putting a radio (wiring inclusive), an antenna and a lead-in wire
near the control unit. D
• If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.
• VDC system may not operate normally or a VDC OFF indicator lamp or SLIP indicator lamp may light.
- When replacing the following parts with parts other than genuine parts or making modifications: Suspension E
related parts (shock absorber, spring, bushing, etc.), tires, wheels (other than specified sizes), brake-related
parts (pad, rotor, caliper, etc.), engine-related parts (muffler, ECM, etc.) and body reinforcement-related parts
(roll bar, tower bar, etc.). BRC
- When driving with worn or deteriorated suspension, tires and brake-related parts.
Precautions for Harness Repair INFOID:0000000003828073

G
COMMUNICATION LINE
• Solder the repaired area and wrap tape around the soldered area.
NOTE: H
A fray of twisted lines must be within 110 mm (4.33 in).

SKIB8766E

K
• Bypass connection is never allowed at the repaired area.
NOTE:
Bypass connection may cause communication error as spliced L
wires that are separate from the main line or twisted lines lose
noise immunity.
• Replace the applicable harness as an assembly if error is detected
M
on the shield lines of communication line.

N
SKIB8767E

Revision: 2009 March BRC-131 2009 FX35/FX50

 PREPARATION
< PREPARATION > [VDC/TCS/ABS]

PREPARATION
PREPARATION
Special Service Tool INFOID:0000000003828074

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number
(Kent-Moore No.) Description
Tool name

ST30720000
(J-25405)
Drift
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.

ZZA0701D

ST27863000
( — )
Drift Installing rear sensor rotor
a: 74.5 mm (2.933 in) dia.
b: 62.5 mm (2.461 in) dia.

ZZA0832D

KV40104710
( — )
Drift
a: 76.3 mm (3.004 in) dia.
b: 67.9 mm (2.673 in) dia.

ZZA0832D

Commercial Service Tool INFOID:0000000003828075

Tool name Description

1. Flare nut crowfoot

a: 10 mm (0.39 in) /12 mm (0.47 in) Installing brake tube
2. Torque wrench

S-NT360

Revision: 2009 March BRC-132 2009 FX35/FX50

 WHEEL SENSOR
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]

REMOVAL AND INSTALLATION A

WHEEL SENSOR
FRONT WHEEL SENSOR
B
FRONT WHEEL SENSOR : Exploded View INFOID:0000000003828076

BRC

J
JSFIA0194GB

1. Front LH wheel sensor connector 2. Front LH wheel sensor 3. Bracket K

A. White line (slant line)
: Vehicle front
L
Refer to GI section GI-4, "Components" for symbol marks in the figure.

NOTE:
The above figure shows left side. Right side is the mirror image. M
FRONT WHEEL SENSOR : Removal and Installation INFOID:0000000003828077

REMOVAL N
Be careful with the following when removing sensor.
CAUTION:
• Do not twist sensor harness as much as possible, when removing it. Pull sensors out without pulling O
sensor harness.
• Be careful to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before remov-
ing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor function.
P
INSTALLATION
Be careful with the following when installing wheel sensor. Tighten installation bolts to the specified torques.
Refer to BRC-133, "FRONT WHEEL SENSOR : Exploded View".
CAUTION:
• When installing, make sure there is no foreign material such as iron chips on and in the mounting
hole of the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove
any foreign material and clean the mount.

Revision: 2009 March BRC-133 2009 FX35/FX50

 WHEEL SENSOR
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]
• When installing wheel sensor, be sure to press rubber grommets in until they lock at locations
shown above in the figure. When installed, harness must not be twisted.
• When you see the harness of the wheel sensor from the front side of the vehicle ensure that the
white lines (A) are not twisted.
REAR WHEEL SENSOR
REAR WHEEL SENSOR : Exploded View INFOID:0000000003828078

JSFIA0225GB

1. Rear LH wheel sensor 2. Rear LH wheel sensor connector 3. Rear RH wheel sensor
4. Rear RH wheel sensor connector

: Vehicle front
Refer to GI section GI-4, "Components" for symbol marks in the figure.

REAR WHEEL SENSOR : Removal and Installation INFOID:0000000003828079

REMOVAL
Be careful with the following when removing sensor.
CAUTION:
• Do not twist sensor harness as much as possible, when removing it. Pull sensors out without pulling
sensor harness.
• Be careful to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before remov-
ing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor function.
INSTALLATION
Be careful with the following when installing wheel sensor. Tighten installation bolts to the specified torques.
Refer to BRC-134, "REAR WHEEL SENSOR : Exploded View".
CAUTION:
• When installing, make sure there is no foreign material such as iron chips on and in the mounting
hole of the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove
any foreign material and clean the mount.
• When installing a rear LH wheel sensor, be sure to pass the wheel sensor harness under the breather
hose.

Revision: 2009 March BRC-134 2009 FX35/FX50

 SENSOR ROTOR
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]
SENSOR ROTOR
A
FRONT SENSOR ROTOR
FRONT SENSOR ROTOR : Exploded View INFOID:0000000003828080
B
Refer to FAX-6, "Exploded View" (2WD models), FAX-16, "Exploded View" (AWD models).
FRONT SENSOR ROTOR : Removal and Installation INFOID:0000000003828081
C
REMOVAL
Sensor rotor cannot be disassembled. Remove the sensor rotor together with hub bearing assembly. Refer to
FAX-6, "Exploded View" (2WD models), FAX-16, "Exploded View" (AWD models). D

INSTALLATION
Sensor rotor cannot be disassembled. Install the sensor rotor together with hub bearing assembly. Refer to E
FAX-6, "Exploded View" (2WD models), FAX-16, "Exploded View" (AWD models).
REAR SENSOR ROTOR
REAR SENSOR ROTOR : Exploded View INFOID:0000000003828082
BRC

JSFIA0054JP

J
1. Side flange 2. Rear wheel sensor rotor

Refer to GI section GI-4, "Components" for symbol marks in the figure.

K
REAR SENSOR ROTOR : Removal and Installation INFOID:0000000003828083

REMOVAL L
• Follow the procedure below to remove rear sensor rotor.
- Remove side flange. Refer to RAX-11, "Exploded View".
- Using a bearing replacer (suitable tool) and puller (suitable tool), remove sensor rotor from side flange.
M
INSTALLATION
CAUTION:
Do not reuse sensor rotor. N
• Follow the procedure below to install rear sensor rotor.
- Using a drifts, press rear sensor rotor onto side flange.

A: Drift [SST: ST30720000 (J-25405)] O

B: Drift [SST: ST27863000 ( — )]
C: Drift [SST: KV40104710 ( — )]
P
- Install side flange. Refer to RAX-11, "Exploded View".

SFIA3387E

Revision: 2009 March BRC-135 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Exploded View INFOID:0000000003828084

JSFIA0226GB

1. Connector 2. ABS actuator and electric unit (control 3. Bushing

unit)
4. Bracket

A. From master cylinder secondary side B. From master cylinder primary side C. To front LH brake caliper
D. To rear RH brake caliper E. To rear LH brake caliper F. To front RH brake caliper
: Vehicle front
Refer to GI section GI-4, "Components" for symbol marks in the figure.

Removal and Installation INFOID:0000000003828085

REMOVAL
CAUTION:
• Before servicing, disconnect the battery cable from negative terminal.
• To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use flare nut crowfoot and torque wrench.
• Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
• Do not remove and install actuator by holding harness.
• After work is completed, bleed air from brake tube. Refer to BR-11, "Bleeding Brake System".
1. Remove hoodledge cover (LH). Refer to EXT-22, "Exploded View".
2. Remove brake tube between brake master cylinder and the ABS actuator and electric unit (control unit)
from the vehicle.
3. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).
4. Remove tire (front LH side).
5. Remove fender protector (rear): (front LH side). Refer to EXT-25, "FENDER PROTECTOR : Exploded
View".
6. Disconnect ABS actuator and electric unit (control unit) connector.

Revision: 2009 March BRC-136 2009 FX35/FX50

 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]
7. Remove ABS actuator and electric unit (control unit) bracket mounting nuts.
8. Remove ABS actuator and electric unit (control unit) from vehicle. A

INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION: B
• Before servicing, disconnect the battery cable from negative terminal.
• To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use flare nut crowfoot and torque wrench. C
• Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
• Do not remove and install actuator by holding harness.
• After work is completed, bleed air from brake tube. Refer to BR-11, "Bleeding Brake System".
D
• After installing harness connector in the ABS actuator and electric unit (control unit), make sure
connector is securely locked.
• When replacing ABS actuator and electric unit (control unit), make sure to adjust neutral position of
steering angle sensor. Refer to BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL E
POSITION : Description".

BRC

Revision: 2009 March BRC-137 2009 FX35/FX50

 YAW RATE/SIDE G SENSOR
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]
YAW RATE/SIDE G SENSOR
Exploded View INFOID:0000000003828086

JSFIA0197GB

1. Yaw rate/side G sensor 2. Connector

: Vehicle front
Refer to GI section GI-4, "Components" for symbol makes in the figure.

Removal and Installation INFOID:0000000003828087

REMOVAL
CAUTION:
Do not drop or strike yaw rate/side G sensor, or do not use power tool etc., because yaw rate/side G
sensor is sensitive to the impact.
1. Remove console finisher assembly. Refer to IP-22, "Exploded View".
2. Disconnect yaw rate/side G sensor harness connector.
3. Remove mounting bolts. Remove yaw rate/side G sensor.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Do not drop or strike yaw rate/side G sensor, or do not use power tool etc., because yaw rate/side G
sensor is sensitive to the impact.

Revision: 2009 March BRC-138 2009 FX35/FX50

 STEERING ANGLE SENSOR
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]
STEERING ANGLE SENSOR
A
Exploded View INFOID:0000000003828088

JSFIA0237GB
E
1. Steering angle sensor

: Vehicle front BRC

Refer to GI section GI-4, "Components" for symbol marks in the figure.

Removal and Installation INFOID:0000000003828089

G

REMOVAL
1. Remove spiral cable assembly. Refer to SR-8, "Exploded View". H
2. Remove steering angle sensor from spiral cable assembly.
INSTALLATION
Note the following, and install in the reverse order of removal. I
CAUTION:
• Never reuse steering angle sensor.
• When installing steering angle sensor, tighten it to the specified torque with an electric screwdriver. J
Be sure to tighten it completely with no floating and tilting.
• After work, make sure to adjust neutral position of steering angle sensor. Refer to BRC-9, "ADJUST-
MENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description".
K

Revision: 2009 March BRC-139 2009 FX35/FX50

 PREVIEW FUNCTION
< SYSTEM DESCRIPTION > [BRAKE ASSIST]

SYSTEM DESCRIPTION
PREVIEW FUNCTION
System Description INFOID:0000000003940929

FUNCTION DESCRIPTION
When the Preview Function identifies the need to apply emergency braking by sensing a vehicle ahead in the
same lane and the distance and relative speed from it, it applies the brake pre-pressure before the driver
depress the brake pedal and helps improve brake response by reducing pedal free play.
The Preview Function shares component parts and diagnosis with the ICC (Intelligent Cruise Control) system.
CAUTION:
This system is only an aid to assist braking operation and is not a collision warning or avoidance
device. It is the driver′s responsibility to stay alert, drive safely and be in control of the vehicle at all
times.
OPERATION DESCRIPTION
Operation
• The system detects the distance to the vehicle in front with the ICC sensor integrated unit of ICC (Full Speed
Range) and judges the necessity of emergency braking.
• The system detects the accelerator pedal release operation of the driver by the accelerator pedal position
sensor and estimates the driver's brake operation intention.
• If the system is judged that the emergency braking is necessary or that the driver has the intention to oper-
ate the brake it supplies the power supply to the brake booster to apply pre-pressure and adjusts the brake
play.
NOTE:
This system will not operate when the vehicle is moving at approximately 32 km/h (20 MPH) or less.
End of Operation
The pre-pressure function ceases when the following conditions are met:
1. When the driver depresses the accelerator pedal or the brake pedal.
2. If the driver does not operate the accelerator pedal or brake pedal within approximately 1 second.

Revision: 2009 March BRC-140 2009 FX35/FX50

 PREVIEW FUNCTION
< SYSTEM DESCRIPTION > [BRAKE ASSIST]
Component Parts Location INFOID:0000000003940930

BRC

P
JSFIA0388ZZ

1. Preview function warning lamp 2. ECM 3. ICC sensor integrated unit

4. ICC brake hold relay 5. Booster solenoid/ Release switch 6. Brake pressure sensor
7. Stop lamp switch 8. ICC brake switch 9. ICC warning chime
10. Brake booster control unit

Revision: 2009 March BRC-141 2009 FX35/FX50

 PREVIEW FUNCTION
< SYSTEM DESCRIPTION > [BRAKE ASSIST]
A. Combination meter B. Behind the glove box C. Front bumper (LH)
D. Engine room (LH) E. Inside brake master cylinder cover F. Upper side of brake pedal
G. Instrument driver lower panel H. Luggage room (RH)

NOTE:
The preview function warning lamp shares the ICC system warning lamp.
Component Description INFOID:0000000004066078

×: Applicable
Function Description
Component Description
*1 *2 *3
ICC sensor integrated unit × × × Refer to CCS-52, "Description".
ECM × × × Refer to CCS-87, "Description".
ABS actuator and electric unit (control
× × × Refer to CCS-58, "Description".
unit)
Transmits the front wiper request signal to ICC sensor inte-
BCM ×
grated unit via CAN communication.
TCM × × Refer to CCS-129, "Description".
Receives the meter display signal, ICC warning lamp signal,
and IBA OFF indicator lamp signal from ICC sensor integrat-
Unified meter and A/C amp. × × ×
ed unit via CAN communication and transmits them to the
combination meter via the communication line.
Performs the following operations using the signals received
from the unified meter and A/C amp. via the communication
line.
• Displays the ICC system operation status using the meter
Combination meter × × × display signal.
• Illuminates the ICC system warning lamp using the ICC
warning lamp signal.
• Illuminates the IBA OFF indicator lamp using the IBA OFF
indicator lamp signal.
ICC brake switch × × ×
Refer to CCS-60, "Description".
Stop lamp switch × × ×
ICC brake hold relay × × Refer to CCS-80, "Description".
Brake booster control unit × × × Refer to CCS-98, "Description".
Brake booster × × Refer to CCS-98, "Description".
Brake pressure sensor × × Refer to CCS-68, "Description".
• Refer to CCS-70, "Description" for booster solenoid.
Booster solenoid/Release switch × ×
• Refer to CCS-73, "Description" for release switch.
ICC warning chime × × × Refer to CCS-142, "Description".
Steering angle sensor × Refer to CCS-123, "Description".
IBA OFF switch ×NOTE Refer to CCS-117, "Description".

*1: Vehicle-to-vehicle distance control mode

*2: Conventional (fixed speed) cruise control mode
*3: IBA system and Brake Assist (With Preview Function)
NOTE:
Only IBA system uses

Revision: 2009 March BRC-142 2009 FX35/FX50

 PREVIEW FUNCTION
< DTC/CIRCUIT DIAGNOSIS > [BRAKE ASSIST]

DTC/CIRCUIT DIAGNOSIS A
PREVIEW FUNCTION
Diagnosis Procedure INFOID:0000000004045657
B

1.BRAKE ASSIST (PREVIEW FUNCTION) DIAGNOSIS

When the preview function is not operating properly, the buzzer sounds and the preview function warning lamp C
will come on.
NOTE:
The preview function warning lamp shares the ICC system warning lamp.
D

>> Go to ICC (Full Speed Range). Refer to CCS-11, "Work Flow".

E

BRC

Revision: 2009 March BRC-143 2009 FX35/FX50

 NORMAL OPERATING CONDITION
< SYMPTOM DIAGNOSIS > [BRAKE ASSIST]

SYMPTOM DIAGNOSIS
NORMAL OPERATING CONDITION
Description INFOID:0000000004068675

PRECAUTIONS FOR PREVIEW FUNCTION

• This system is only an aid to assist braking operation and is not a collision warning or avoidance device. It is
the driver′s responsibility to stay alert, drive safely and be in control of the vehicle at all times.
• As there is a performance limit to the Preview Function, never rely solely on this system. This system does
not correct careless inattentive or absent-minded driving, or overcome poor visibility in rain, fog, or other bad
weather. Reduce vehicle speed by depressing the brake, in order to maintain a safe distance between vehi-
cles.
• The system may not detect a vehicle ahead, depending on road or weather conditions. While the vehicle still
travels and the Brake Assist System operates under normal conditions, the Preview Function may operate
improperly under the following conditions:
- When rain, snow or dirt adhere to the system sensor
- When strong light (for example, at sunrise or sunset) is directly shining on the front of the vehicle
- Winding or hilly roads may cause the sensor to temporarily not detect a vehicle in the same lane or may
detect objects or vehicles in other lanes.
- Vehicle position in the lane may cause the sensor to temporarily not detect a vehicle in the same lane or may
detect objects or vehicles in other lanes.
• The system will not detect:
- Pedestrians or objects in the roadway
- Oncoming vehicles in the same lane
- Motorcycles traveling offset in the travel lane as illustrated
• When the Preview Function operates, the brake pedal may move
slightly and may make a small noise. This is not a system malfunc-
tion.

JSFIA0390ZZ

Revision: 2009 March BRC-144 2009 FX35/FX50

 PRECAUTIONS
< PRECAUTION > [BRAKE ASSIST]

PRECAUTION A
PRECAUTIONS
Precautions for Preview Function Service INFOID:0000000004104311
B
CAUTION:
• Never look straight into the laser beam discharger when adjusting laser beam aiming.
• Never use the ICC sensor integrated unit removed from vehicle. Never disassemble or remodel. C

BRC

Revision: 2009 March BRC-145 2009 FX35/FX50

 INTELLIGENT BRAKE ASSIST
< SYSTEM DESCRIPTION > [INTELLIGENT BRAKE ASSIST]

SYSTEM DESCRIPTION
INTELLIGENT BRAKE ASSIST
System Description INFOID:0000000003940939

FUNCTION DESCRIPTION
Intelligent Brake Assist (IBA) system warns the driver by a warning lamp and chime when there is a risk of a
collision with the vehicle ahead in the traveling lane and the driver must take avoidance action immediately.
The system helps reduce the rear-end collision speed by applying the brakes when it judges a collision can
not be avoided.
CAUTION:
The IBA system is a not collision avoidance system. It is the driver′s responsibility to stay alert, drive
safely and be in control of the vehicle at all times.
NOTE:
• The IBA system shares component parts and diagnosis with the ICC (Intelligent Cruise Control) system.
New parts added to the IBA system is the IBA OFF indicator lamp in the combination meter and the IBA OFF
switch on the inside instrument driver lower panel.
• The ICC sensor integrated unit shares the parts with the ICC, but the IBA system will operate even when the
ICC system is turned to OFF.
OPERATION DESCRIPTION
The IBA system uses a distance sensor located below the front bumper to measure the distance to a vehicle
ahead. When the system judges that the distance gets shorter, the vehicle ahead detection indicator lamp on
the combination meter blinks and the warning chime sounds.
To turn the system off/on, push and hold the IBA OFF switch after starting the engine for more than 1 second.
NOTE:
The system on/off condition will be memorized even if the ignition switch turns OFF.
The IBA system operates under the following conditions.
• The IBA system will function when the vehicle is driven at speeds of approximately 15 km/h (10 MPH) and
above, and when the vehicle′s speed is approximately 15 km/h (10 MPH) faster than that of the vehicle
ahead.
Switch and Indicators

JSFIA0391ZZ

1. IBA OFF switch 2. Vehicle ahead detection indicator 3. IBA OFF indicator lamp
lamp

A. On the instrument driver lower panel B. On the combination meter

Fail-safe Indication

Revision: 2009 March BRC-146 2009 FX35/FX50

 INTELLIGENT BRAKE ASSIST
< SYSTEM DESCRIPTION > [INTELLIGENT BRAKE ASSIST]

Condition Description Indication on the combination meter A

• When the sensor window is dirty The system will be cancelled automatically
• When the system malfunction with a beep sound.
B

When driving into a strong light The system is temporary unavailable.

(i.e. sunlight) (Without the warning chime)
C
JSFIA0392ZZ

NOTE:
When the IBA turns off, the IBA OFF indicator lamp will illuminate. D

BRC

Revision: 2009 March BRC-147 2009 FX35/FX50

 INTELLIGENT BRAKE ASSIST
< SYSTEM DESCRIPTION > [INTELLIGENT BRAKE ASSIST]
Component Parts Location INFOID:0000000003941419

JSFIA0389ZZ

1. Vehicle ahead detection indicator 2. IBA OFF indicator lamp 3. ECM

lamp
4. ICC sensor integrated unit 5. ICC brake hold relay 6. Booster solenoid/ Release switch
7. Brake pressure sensor 8. Stop lamp switch 9. ICC brake switch
10. IBA OFF switch 11. ICC warning chime 12. Brake booster control unit

Revision: 2009 March BRC-148 2009 FX35/FX50

 INTELLIGENT BRAKE ASSIST
< SYSTEM DESCRIPTION > [INTELLIGENT BRAKE ASSIST]
A. Combination meter B. Behind the glove box C. Front bumper (LH)
D. Engine room (LH) E. Inside brake master cylinder cover F. Upper side of brake pedal A
G. Instrument driver lower panel H. Luggage room (RH)

Component Description INFOID:0000000004066081 B

×: Applicable
Function Description
Component Description C
*1 *2 *3
ICC sensor integrated unit × × × Refer to CCS-52, "Description".
ECM × × × Refer to CCS-87, "Description". D
ABS actuator and electric unit (control
× × × Refer to CCS-58, "Description".
unit)
Transmits the front wiper request signal to ICC sensor inte- E
BCM ×
grated unit via CAN communication.
TCM × × Refer to CCS-129, "Description".
BRC
Receives the meter display signal, ICC warning lamp signal,
and IBA OFF indicator lamp signal from ICC sensor integrat-
Unified meter and A/C amp. × × ×
ed unit via CAN communication and transmits them to the
combination meter via the communication line. G
Performs the following operations using the signals received
from the unified meter and A/C amp. via the communication
line.
• Displays the ICC system operation status using the meter
H
Combination meter × × × display signal.
• Illuminates the ICC system warning lamp using the ICC
warning lamp signal. I
• Illuminates the IBA OFF indicator lamp using the IBA OFF
indicator lamp signal.
ICC brake switch × × ×
Refer to CCS-60, "Description". J
Stop lamp switch × × ×
ICC brake hold relay × × Refer to CCS-80, "Description".
Brake booster control unit × × × Refer to CCS-98, "Description". K
Brake booster × × Refer to CCS-98, "Description".
Brake pressure sensor × × Refer to CCS-68, "Description".
L
• Refer to CCS-70, "Description" for booster solenoid.
Booster solenoid/Release switch × ×
• Refer to CCS-73, "Description" for release switch.
ICC warning chime × × × Refer to CCS-142, "Description".
M
Steering angle sensor × Refer to CCS-123, "Description".
IBA OFF switch ×NOTE Refer to CCS-117, "Description".

*1: Vehicle-to-vehicle distance control mode

N
*2: Conventional (fixed speed) cruise control mode
*3: IBA system and Brake Assist (With Preview Function)
NOTE: O
Only IBA system uses

Revision: 2009 March BRC-149 2009 FX35/FX50

 INTELLIGENT BRAKE ASSIST
< DTC/CIRCUIT DIAGNOSIS > [INTELLIGENT BRAKE ASSIST]

DTC/CIRCUIT DIAGNOSIS
INTELLIGENT BRAKE ASSIST
Diagnosis Procedure INFOID:0000000003940954

1.INTELLIGENT BRAKE ASSIST DIAGNOSIS

• The system will be cancelled automatically with a beep sound and IBA OFF indicator lamp on the combina-
tion meter will illuminate, when the system will not operate properly.
• When the IBA OFF indicator lamp continues to illuminate even if the IBA system is turned on after the engine
restarts, perform the trouble-diagnosis.
NOTE:
IBA system automatically returns to ON, when erasing self-diagnosis result of “ICC”.

>> Go to ICC (Full Speed Range). Refer to CCS-11, "Work Flow".

Revision: 2009 March BRC-150 2009 FX35/FX50

 SWITCH DOES NOT TURN ON / SWITCH DOES NOT TURN OFF
< SYMPTOM DIAGNOSIS > [INTELLIGENT BRAKE ASSIST]

SYMPTOM DIAGNOSIS A
SWITCH DOES NOT TURN ON / SWITCH DOES NOT TURN OFF
Symptom Table INFOID:0000000004095816
B
CAUTION:
Perform the self-diagnosis with CONSULT-III before the symptom diagnosis. Perform the trouble diag-
nosis if any DTC is detected. C

Symptom Inspection item/Reference page

IBA OFF indicator lamp is not turned D
IBA system does not turn on/off BRC-151, "Diagnosis Procedure"
on⇔off when operating IBA OFF switch

Description INFOID:0000000004095817
E
IBA system does not turn on/off.
• IBA OFF indicator lamp does not illuminate even if the IBA OFF switch is depressed when IBA OFF indicator
lamp is not illuminated. BRC
• IBA OFF indicator lamp does not turn off even if the IBA OFF switch is depressed when IBA OFF indicator
lamp is illuminated.
NOTE: G
• To turn the system off⇔on, push and hold the IBA OFF switch after starting the engine for more than 1 sec-
ond.
• The system on/off condition will be memorized even if the ignition switch turns OFF.
H
Diagnosis Procedure INFOID:0000000004095818

1.PERFORM THE SELF-DIAGNOSIS I

1. Perform “All DTC Reading” using CONSULT-III.
2. Check if the DTC is detected in self-diagnosis results of “ICC”. Refer to CCS-158, "DTC Index".
Is any DTC detected? J
YES >> GO TO 6.
NO >> GO TO 2.
2.IBA OFF SWITCH INSPECTION K

1. Start the engine.

2. Check that “IBA SW” operates normally in “DATA MONITOR” of “ICC” using CONSULT-III.
L
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 5.
M
3.CHECK IBA OFF INDICATOR CIRCUIT
1. Start the engine.
2. Select the active test item “METER LAMP” of “ICC” using CONSULT-III. N
3. Check if the IBA OFF indicator lamp illuminates when the test item is operated.
Is the inspection result normal?
YES >> Refer to GI-31, "Work Flow". O
NO >> GO TO 4.
4.CHECK DATA MONITOR OF “UNIFIED METER AND A/C AMP.”
P
Check that “BA W/L” operates normally in “DATA MONITOR” of “METER/M&A” using CONSULT-III, when the
IBA OFF switch is pushed and hold for more than 1 second.
Is the inspection result normal?
YES >> Replace the combination meter. Refer to MWI-174, "Exploded View".
NO >> Replace the unified meter and A/C amp. Refer to MWI-175, "Exploded View".
5.CHECK IBA OFF SWITCH

Revision: 2009 March BRC-151 2009 FX35/FX50

 SWITCH DOES NOT TURN ON / SWITCH DOES NOT TURN OFF
< SYMPTOM DIAGNOSIS > [INTELLIGENT BRAKE ASSIST]
Check IBA OFF switch. Refer to CCS-117, "Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 6.
6.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts.

>> GO TO 7.
7.CHECK IBA SYSTEM
Check that IBA OFF indicator lamp turned on⇔off, when operating IBA OFF switch.

>> INSPECTION END

Revision: 2009 March BRC-152 2009 FX35/FX50

 NORMAL OPERATING CONDITION
< SYMPTOM DIAGNOSIS > [INTELLIGENT BRAKE ASSIST]
NORMAL OPERATING CONDITION
A
Description INFOID:0000000004095815

PRECAUTIONS FOR INTELLIGENT BRAKE ASSIST B

• The IBA system is a not collision avoidance system. It is the driver′s responsibility to stay alert, drive safely
and be in control of the vehicle at all times.
• As there is a performance limit, it may not provide a warning or brake in certain conditions. C
• The system will not detect the following objects:
- Pedestrians, animals, or obstacles in the roadway
- Oncoming vehicles in the same lane
• The system will not detect under the following conditions: D
- When the sensor gets dirty and it is impossible to detect the distance from the vehicle ahead.
- When driving into a strong light (i.e. sunlight)
• The sensor generally detects the signals returned from the reflectors on a vehicle ahead. Therefore, the sys- E
tem may not function properly under the following conditions:
- When the reflectors of the vehicle ahead are positioned high or close each other (including a small vehicle
such as motorcycles).
- When the sensor gets dirty or and it is impossible to detect the distance from the vehicle ahead. BRC
- When the reflectors on the vehicle ahead is missing, damaged or covered.
- When the reflector of the vehicle ahead is covered with dirt, snow and road spray.
- When visibility is low (such as rain, fog, snow, etc.). G
- When snow or road spray from traveling vehicles are raised up.
- When dense exhaust or other smoke (black smoke) from vehicles reduces the sensor visibility.
- When excessively heavy baggage is loaded in the rear seat or the luggage room of vehicle.
H
- When abruptly accelerating or decelerating.
- On steep downhill or roads with sharp curves.
- When there is a highly reflective object near the vehicle ahead (ie,) very close to other vehicle, signboard,
etc. I
- While towing a trailer.
• Depending on certain road conditions (curved, beginning of a curve), vehicle conditions (steering position,
vehicle position), or preceding vehicle′s conditions (position in lane, etc.), the system may not function prop-
J
erly.
• The system may not function in offset conditions.
• The system may not function when the distance to the vehicle ahead is extremely close.
• The system detect highly reflective objects such as reflectors, K
signs, white markers, and other stationary objects on the road or
near the traveling lane, and when in extreme conditions, detection
of these objects may cause the system to function. L
• The system is designed to automatically check the sensor′s func-
tionality. If the sensor is covered with ice, a transparent or translu-
cent plastic bag, etc., the system may not detect them. In these
instances the system may not be able to warn properly. Be sure to M
check and clean the sensor regularly.
• Excessive noise will interfere with the warning chime sound, and
the chime may not be heard. N
JSFIA0385ZZ
• Never step in under the brake pedal to avoid an accident when IBA
system turns on.
• Sudden appearance of the vehicle in front (ie, it abruptly cuts in) may not be detected and the system may
not warn soon enough. O
• The system will be cancelled automatically with a beep sound and the IBA OFF indicator lamp will illuminate
under the following conditions:
- When the sensor window is dirty P
- When the system malfunctions

Revision: 2009 March BRC-153 2009 FX35/FX50

 PRECAUTIONS
< PRECAUTION > [INTELLIGENT BRAKE ASSIST]

PRECAUTION
PRECAUTIONS
Precautions for IBA System Service INFOID:0000000004045658

CAUTION:
• Never look straight into the laser beam discharger when adjusting laser beam aiming.
• Turn the IBA system OFF in conditions similar to driving, such as free rollers or a chassis dynamom-
eter.
• Never use the ICC sensor integrated unit removed from vehicle. Never disassemble or remodel.
• Erase DTC when replacing parts of ICC system. Then check the operation of ICC system after adjust-
ing laser beam aiming if necessary.
• Never change IBA system state ON/OFF without the consent of the customer.
NOTE:
IBA system automatically returns to ON, when erasing self-diagnosis result of “ICC”.

Revision: 2009 March BRC-154 2009 FX35/FX50

 IBA OFF SWITCH
< REMOVAL AND INSTALLATION > [INTELLIGENT BRAKE ASSIST]

REMOVAL AND INSTALLATION A

IBA OFF SWITCH
Exploded View INFOID:0000000004099940
B

BRC

JPOIA0197ZZ
G

1. IBA OFF switch

H
Removal and Installation INFOID:0000000004099941

REMOVAL I
1. Remove instrument lower panel LH. Refer to IP-11, "Exploded View".
2. Disengage the pawl (A). Then remove IBA OFF switch.
J
INSTALLATION
Install in the reverse order of removal.

Revision: 2009 March BRC-155 2009 FX35/FX50