05-738
DIAGNOSTICS - SFI SYSTEM (2ZZ-GE)
05LLB-02
TERMINALS OF ECM
E3 E4 E5 E6
A66714
HINT:
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropri-
ate conditions for checking each pair of terminals is also indicated.
The result of checks should be compared with the standard normal voltage for that pair of terminals, dis-
played in the STD Voltage column.
The illustration above can be used as a reference to identify the ECM terminal locations.
Symbols (Terminals No.) Wiring Colors Terminal Descriptions Conditions STD Voltage
Battery (for measuring
BATT (E6-3) - E1 (E3-5) R-W - BR battery voltage and for Always Between 8 V and 14 V
ECM memory)
FC (E5-16) - E1 (E3-5) G-R - BR Fuel pump control Ignition switch ON Between 8 V and 14 V
FC (E5-16) - E1 (E3-5) G-R - BR Fuel pump control Idling Below 1.5 V
W (E6-11) - E1 (E3-5) R-Y - BR MIL Idling Between 8 V and 14 V
W (E6-11) - E1 (E3-5) R-Y - BR MIL Ignition switch ON Below 3.5 V
+B (E6-1) - E1 (E3-5) B - BR Power source of ECM Ignition switch ON Between 8 V and 14 V
MREL (E5-4) - E1 (E3-5) B-W - BR Power source Ignition switch ON Between 8 V and 14 V
IGSW (E6-9) - E1 (E3-5) B-O - BR Ignition switch Ignition switch ON Between 9 V and 14 V
Pulse generation
F/PS (E6-14) - E1 (E3-5) Y - BR Airbag sensor Idling with warm engine
(See waveform 10)
STA (E3-12) - E1 (E3-5) B - BR Starter signal Cranking 5.5 V or more
Power steering oil pres-
PSW (E4-30) - E1 (E3-5) L-R - BR Ignition switch ON Between 8 V and 14 V
sure sensor
Speed signal from com- Ignition switch ON, Driving wheel Pulse generation
SPD (E5-17) - E1 (E3-5) V-W - BR
bination meter rotating slowly (See waveform 2)
TACH (E5-3) - E1 (E3-5) B - BR Engine speed Idling Pulse generation
Power source of sensor Between
VC (E3-18) - E2 (E3-28) Y - BR Ignition switch ON
(specific voltage) 4.5 V and 5.5 V
Between
VG (E3-30) - EVG (E3-29) G - L-W Mass air flow meter Idling, A/C switch OFF
1.1 V and 1.5 V
Engine speed maintained 2,500 rpm
Heated oxygen sensor Pulse generation
OX1A (E4-22) - E1 (E3-5) R - BR for 2 minutes after warning up sen-
(Sensor 1) (See waveform 7)
sor
Heated oxygen sensor
HT1A (E4-6) - E03 (E4-7) P - W-B Idling Below 3.0 V
heater (Sensor 1)
Heated oxygen sensor
HT1A (E4-6) - E03 (E4-7) P - W-B Ignition switch ON Between 8 V and 14 V
heater (Sensor 1)
2005 COROLLA MATRIX REPAIR MANUAL
(RM1108U)
Author: Date: 949
05-739
DIAGNOSTICS - SFI SYSTEM (2ZZ-GE)
Symbols (Terminals No.) Wiring Colors Terminal Descriptions Conditions STD Voltage
Engine speed mainained 2,500 rpm
Heated oxygen sensor Pulse generation
OX1B (E5-23) - E1 (E3-5) W - BR for 2 minutes after warning up sen-
(Sensor 2) (See waveform 8)
sor
Heated oxygen sensor
HT1B (E6-7) - E03 (E4-7) P-B - W-B Idling Below 3.0 V
heater (Sensor 2)
Heated oxygen sensor
HT1B (E6-7) - E03 (E4-7) P-B - W-B Ignition switch ON Between 8 V and 14 V
heater (Sensor 2)
Engine coolant tempera- Idling, Engine coolant temperature Between
THW (E3-19) - E2 (E3-28) W - BR
ture sensor 80°C (176°F) 0.2 V and 1.0 V
Pulse generation
G2+ (E3-26) - NE- (E3-34) B-W Camshaft position sensor Idling
(See waveform 1)
Crankshaft position sen- Pulse generation
NE+ (E3-27) - NE- (E3-34) B-W Idling
sor (See waveform 1)
Intake air temperature Idling, Intake air temperature 20°C Between
THA (E3-20) - E2 (E3-28) Y-B - BR
sensor (68°F) 0.5 V and 3.4 V
Ignition switch ON, Throttle valve Between
VTA (E3-21) - E2 (E3-28) LG - BR Throttle position sensor
fully closed 0.3 V and 1.0 V
Ignition switch ON, Throttle valve Between
VTA (E3-21) - E2 (E3-28) LG - BR Throttle position sensor
fully open 3.2 V and 4.9 V
Pulse generation
#10 (E3-1) - E01 (E3-7) Y - W-B Injector Idling
(See waveform 4)
Pulse generation
#20 (E3-2) - E01 (E3-7) B - W-B Injector Idling
(See waveform 4)
Pulse generation
#30 (E3-3) - E01 (E3-7) W - W-B Injector Idling
(See waveform 4)
Pulse generation
#40 (E3-4) - E01 (E3-7) L - W-B Injector Idling
(See waveform 4)
Ignition coil and igniter Pulse generation
IGT1 (E3-8) - E1 (E3-5) R-L - BR Idling
(ignition signal) (See waveform 3)
Ignition coil and igniter Pulse generation
IGT2 (E3-9) - E1 (E3-5) Y-G - BR Idling
(ignition signal) (See waveform 3)
Ignition coil and igniter Pulse generation
IGT3 (E3-10) - E1 (E3-5) GR - BR Idling
(ignition signal) (See waveform 3)
Ignition coil and igniter Pulse generation
IGT4 (E3-11) - E1 (E3-5) W - BR Idling
(ignition signal) (See waveform 3)
Ignition coil and igniter
Between
IGF (E3-24) - E1 (E3-5) L-Y - BR (ignition confirmation sig- Ignition switch ON
4.5 V and 5.5 V
nal)
Ignition coil and igniter
Pulse generation
IGF (E3-24) - E1 (E3-5) L-Y - BR (ignition confirmation sig- Idling
(See waveform 3)
nal)
Between
RSO (E3-16) - E01 (E3-7) B-L - W-B Idle air control valve Ignition switch ON
8 V and 14 V
Camshaft timing oil con- Pulse generation
OC1+ (E3-14) - OC1- (E3-13) Y - B-Y Ignition switch ON
trol valve for VVT-i (See waveform 6)
Maintain engine speed 4,000 rpm Pulse generation
KNK1 (E4-1) - EKNK (E4-2) B-W Knock sensor
after warming up engine (See waveform 9)
TC (E6-20) - E1 (E3-5) P-B - BR Terminal TC of DLC3 Ignition switch ON Between 8 V and 14 V
Connect hand-held tester or OBD II
SIL (E5-15) - E1 (E3-5) L-R - BR Terminal SIL of DLC3 Pulse generation
scan tool to DLC3
Camshaft timing oil con- Pulse generation
VVL+ (E4-17) - VVL- (E4-16) B - L-Y Engine speed 6,000 rpm or more
trol valve for VVTL-i (See waveform 6)
Oil pressure switch for Between
OSW (E5-31) - E1 (E3-5) B-W - BR Ignition switch ON
VVTL-i 8 V and 14 V
2005 COROLLA MATRIX REPAIR MANUAL
(RM1108U)
Author: Date: 950
05-740
DIAGNOSTICS - SFI SYSTEM (2ZZ-GE)
Symbols (Terminals No.) Wiring Colors Terminal Descriptions Conditions STD Voltage
VSV for secondary air in-
AIRV (E6-4) - E1 (E3-5) B-L - BR Ignition switch ON Between 8 V and 14 V
jection system
AIRP (E6-5) - E1 (E3-5) B-O - BR Air pump control Ignition switch ON Between 8 V and 14 V
Manifold Absolute Between
AIP (E5-34) - E2 (E3-28) G - BR Ignition switch ON
Pressure Sensor 4.5 V and 5.5 V
Pulse generation
PRG (E4-19) - E1 (E3-5) L-B - BR Purge VSV Engine running
(See waveform 5)
Vent Valve
VPMP (E3-25) - E1 (E3-5) R - BR Ignition switch ON Between 8 V and 14 V
(built into pump module)
Vacuum pump
MPMP (E4-8) - E1 (E3-5) GR - BR Vacuum pump ON Between 8 V and 14 V
(built into pump module)
Pressure Sensor
PPMP (E6-21) - E2 (E3-28) L - BR Ignition switch ON Between 3 V and 3.6 V
(built into pump module)
WAVEFORM 1
5 V/DIV (a) Camshaft Position (CMP) sensor
(a) (b) Crankshaft Position (CKP) sensor
(G2+) GND
ECM Terminal (a) Between G2+ and NE-
Names (b) Between NE+ and NE-
Tester Ranges 5 V/DIV, 20 msec./DIV
(b)
(NE+) GND Conditions Idling with warm engine
HINT:
20 msec./DIV
A84612 The wavelength becomes shorter as the engine rpm increases.
WAVEFORM 2
5 V/DIV Vehicle speed signal
ECM Terminal
Between SP2+ and SP2-
Names
Tester Ranges 5 V/DIV, 10 msec./DIV
Conditions Driving at 25 mph (40 km/h)
GND
HINT:
10 msec./DIV
The wavelength becomes shorter as the vehicle speed in-
A93277 creases.
WAVEFORM 3
2 V/DIV
(a) igniter IGT signal (from ECM to igniter)
(b) igniter signal IGF (from igniter to ECM)
(a)
ECM Terminal (a) Between IGT1 (to IGT4) and E1
GND Names (b) Between IGF and E1
(b) Tester Ranges 2 V/DIV, 20 msec./DIV
GND Conditions Idling
HINT:
20 msec./DIV
A93278 The wavelength becomes shorter as the engine rpm increases.
2005 COROLLA MATRIX REPAIR MANUAL
(RM1108U)
Author: Date: 951
05-741
DIAGNOSTICS - SFI SYSTEM (2ZZ-GE)
WAVEFORM 4
20 V/DIV
Fuel injector
ECM Terminal
Between #10 (to 40) and E1
Names
Tester Ranges 20 V/DIV, 20 msec./DIV
Conditions Idling
GND
HINT:
The wavelength becomes shorter as the engine rpm increases.
20 msec./DIV
A93279
WAVEFORM 5
5 V/DIV EVAP VSV
ECM Terminal
Between PRG and E1
Names
A Tester Ranges 5 V/DIV, 50 msec./DIV
GND Conditions Slow acceleration with warm engine
B
HINT:
If the waveform is not similar to the illustration, check the wave-
50 msec./DIV
A93280 form again after idling for 10 minutes or more.
WAVEFORM 6
5 V/DIV VVT OCV, VVTL OCV
ECM Terminal Between OC1+ and OC1-
Names Between VVL+ and VVL-
Tester Ranges 5 V/DIV, 200 msec./DIV
GND A
B Conditions Slow acceleration when warm
HINT:
200 msec./DIV
In the DATA LIST, item VVT OCV DUTY B1 shows the duty ratio
A93281 of the voltage flowing to the OCV (see illustration on left).
VVT OCV DUTY B1, B2 = A/B x 100 (%)
WAVEFORM 7
0.2 V/DIV
Front Heated Oxygen (HO2) Sensor
ECM Terminal
Between OX1A and E1
Names
Tester Ranges 0.2 V/DIV, 200 msec./DIV
Conditions Engine maintained at 2,500 rpm when warm
GND HINT:
In the DATA LIST, items HO2S B1 S1 and HO2S B2 S1 show
200 msec./DIV
A93282 the ECM input values of the front HO2 sensor.
WAVEFORM 8
0.2 V/DIV Rear Heated Oxygen (HO2) sensor
ECM Terminal
Between OX1B and E1
Names
Tester Ranges 0.2 V/DIV, 200 msec./DIV
Conditions Engine maintained at 2,500 rpm when warm
GND HINT:
In the DATA LIST, items HO2S B1 S2 and HO2S B2 S2 show
200 msec./DIV
A88863 the ECM input values from the rear HO2 sensor.
2005 COROLLA MATRIX REPAIR MANUAL
(RM1108U)
Author: Date: 952
05-742
DIAGNOSTICS - SFI SYSTEM (2ZZ-GE)
WAVEFORM 9
1 V/DIV
Knock sensor
ECM Terminal Between KNK1 and EKNK
Names Between KNK2 and EKN2
Tester Ranges 1 V/DIV, 1 msec./DIV
Conditions Engine maintained at 2,000 rpm when warm
HINT:
1 msec./DIV The wavelength becomes shorter as the engine rpm in-
A82985 creases.
The waveforms and amplitudes displayed differ slightly
depending on the vehicle.
WAVEFORM 10
5 V/DIV Airbag sensor
ECM Terminal
Between F/PS and E1
Names
Tester Ranges 5V/DIV, 500 msec./DIV
Conditions Idling
HINT:
The duty ratio changes depending on the engine coolant tem-
500 msec./DIV A38417 perature.
2005 COROLLA MATRIX REPAIR MANUAL
(RM1108U)
Author: Date: 953
