The 2AZ-FE is found in the Scion tC which first made its debut in 2005. This ECU pinout is for a 2007 Scion tC 2AZ-FE.
| Terminal No. (Symbols) | Wiring Color | Terminal Description |
Condition |
Specified Condition |
| E4-3 (BATT) – E8-3 (E1) |
V – L |
Battery (for measuring battery voltage and for ECM memory) | Always | 9 to 14 V |
| E4-7 (+BM) – E8-3 (E1) |
BR – L |
Power source of throttle motor | Always | 9 to 14 V |
| E4-9 (IGSW) – E8-3 (E1) |
G – L |
Ignition switch | Ignition switch ON | 9 to 14 V |
| E4-1 (+B) – E8-3 (E1) | GR – L | Power source of ECM | Ignition switch ON | 9 to 14 V |
| E4-2 (+B2) – E8-3 (E1) |
O – L |
Power source of ECM | Ignition switch ON | 9 to 14 V |
| E8-13 (OC1+) – E8-12 (OC1-) |
Y – W |
Camshaft timing oil control valve (OCV) | Ignition switch ON | Pulse generation (See waveform 8) |
| E4-8 (MREL) – E8-7 (E01) |
O – B |
EFI relay | Ignition switch ON | 9 to 14 V |
| E8-18 (VC) – E8-28 (E2) |
V – R |
Power source of sensor
(specific voltage) |
Ignition switch ON | 4.5 to 5.5 V |
| E7-28 (VG) – E7-30 (E2G) |
R – W |
Mass air flow meter | Idling, shift lever position P or N
position, A/C switch OFF |
0.5 to 3.0 V |
| E7-29 (THA) – E8-28 (E2) |
L – R |
Intake air temperature sensor | Idling, intake air temp. 20°C (68°F) | 0.5 to 3.4 V |
| E8-32 (THW) – E8-28 (E2) |
G – R |
Engine coolant temperature sensor | Idling, engine coolant temp. 80°C (176°F) | 0.2 to 1.0 V |
| E8-20 (VTA1) – E8-28 (E2) | LG – R | Throttle position sensor
(for engine control) |
Ignition switch ON, accelerator pedal released | 0.3 to 1.0 V |
| Ignition switch ON, accelerator pedal depressed | 3.2 to 4.9 V | |||
| E8-19 (VTA2) – E8-28 (E2) | BR – R | Throttle position sensor (for sensor malfunction detection) | Ignition switch ON, accelerator pedal released | 2.1 to 3.1 V |
| Ignition switch ON, accelerator pedal depressed | 4.5 to 5.5 V |
| Terminal No. (Symbols) | Wiring Color | Terminal Description |
Condition |
Specified Condition |
| E4-18 (VPA) – E4-20 (EPA) | W – BR | Accelerator pedal position sensor (for engine
control) |
Ignition switch ON, accelerator pedal released | 0.5 to 1.1 V |
| Ignition switch ON, accelerator pedal depressed | 2.6 to 4.5 V | |||
| E4-19 (VPA2) – E4-21 (EPA2) |
V – R |
Accelerator pedal position sensor (for sensor malfunction detection) | Ignition switch ON, accelerator pedal released | 1.2 to 2.0 V |
| Ignition switch ON, accelerator pedal depressed | 3.4 to 5.3 V | |||
| E4-26 (VCPA) – E4-20 (EPA) |
L – BR |
Power source of accelerator pedal position sensor (for VPA) | Ignition switch ON | 4.5 to 5.5 V |
| E4-27 (VCP2) – E4-21 (EPA2) |
P – R |
Power source of accelerator pedal position sensor (for VPA2) | Ignition switch ON | 4.5 to 5.5 V |
| E8-1 (HA1A) – E7-7 (E04) | O – W-B | A/F sensor heater | Idling | Below 3.0 V |
| Ignition switch ON | 9 to 14 V | |||
| E8-21 (A1A+) – E8-3 (E1) |
O – L |
A/F sensor | Ignition switch ON | 3.0 to 3.6 V |
| E8-31 (A1A-) – E8-3 (E1) |
W – L |
A/F sensor | Ignition switch ON | 2.7 to 3.3 V |
| E8-2 (HT1B) – E7-4 (E03) |
L – BR |
Heated oxygen sensor heater | Idling | Below 3.0 V |
| Ignition switch ON | 9 to 14 V | |||
| E8-25 (OX1B) – E8-28 (E2) |
B – R |
Heated oxygen sensor | Maintain engine speed at 2500 rpm for 2 minutes after warming up | Pulse generation (See waveform 6) |
| E7-6 (#1) – E8-7 (E01) E7-5 (#2) – E8-7 (E01) E7-2 (#3) – E8-7 (E01) E7-1 (#4) – E8-7 (E01) |
L – B R – B Y – B W – B |
Injector | Ignition switch ON | 9 to 14 V |
| Idling | Pulse generation (See waveform 1) | |||
| E8-29 (KNK1) – E8-30 (EKNK) |
R – G |
Knock sensor | Maintain engine speed at 4000 rpm after warming up engine | Pulse generation (See waveform 7) |
| E8-26 (G2+) – E8-34 (NE-) |
P – G |
Camshaft position sensor | Idling | Pulse generation (See waveform 3) |
| E8-27 (NE+) – E8-34 (NE-) |
R – G |
Crankshaft position sensor | Idling | Pulse generation (See waveform 3) |
| E8-17 (IGT1) – E8-3 (E1) E8-16 (IGT2) – E8-3 (E1) E8-15 (IGT3) – E8-3 (E1) E8-14 (IGT4) – E8-3 (E1) | G – L P – L B – L
LG – L |
Ignition coil with igniter
(ignition signal) |
Idling | Pulse generation (See waveform 2) |
| E8-23 (IGF1) – E8-3 (E1) |
V – L |
Ignition coil with igniter (ignition confirmation signal) | Ignition switch ON | 4.5 to 5.5 V |
| Idling | Pulse generation (See waveform 2) | |||
| E7-23 (PRG) – E8-7 (E01) |
R – B |
Purge VSV | Ignition switch ON | 9 to 14 V |
| Idling | Pulse generation (See waveform 9) | |||
| E5-8 (SPD) – E8-3 (E1) |
V – L |
Speed signal from combination meter | Ignition switch ON, rotate driving wheel slowly | Pulse generation (See waveform 11) |
| E4-12 (STA) – E8-3 (E1) |
B – L |
Starter signal | Shift lever position P or N, ignition switch START | 9 to 14 V |
| E5-4 (STP) – E8-3 (E1) |
L – L |
Stop light switch | Brake pedal is depressed | 7.5 to 14 V |
| Brake pedal is released | Below 1.5 V | |||
| E4-16 (ST1-) – E8-3 (E1) |
L – L |
Stop light switch (opposite to STP terminal) | Ignition switch ON,
Brake pedal is depressed |
Below 1.5 V |
| Ignition switch ON, Brake pedal is released | 7.5 to 14 V | |||
| E4-30 (NSW)*1 – E8-3 (E1) |
Y – L |
Park/neutral position switch | Ignition switch ON, shift position at
P or N |
0 to 3.0 V |
| Ignition switch ON, shift position is not P or N | 9 to 14 V |
| Terminal No. (Symbols) | Wiring Color | Terminal Description |
Condition |
Specified Condition |
|
E8-5 (M+) – E7-3 (ME01) |
B – W-B |
Throttle actuator |
Idling |
Pulse generation (See waveform 4) |
|
E8-4 (M-) – E7-3 (ME01) |
W – W-B |
Throttle actuator |
Idling |
Pulse generation (See waveform 5) |
| E4-25 (FC) – E8-7 (E01) |
L – B |
Fuel pump control | Ignition switch ON | 9 to 14 V |
|
E5-30 |
G – L |
MIL |
Ignition switch ON | Below 3.0 V |
| Idling | 9 to 14 V | |||
|
E4-15 (ELS1) – E8-3 (E1) |
B – L |
Electric load |
Light control switch OFF | 0 to 1.5 V |
| Light control switch is in TAIL
position |
9 to 14 V |
|||
|
E5-3 (ELS3) – E8-3 (E1) |
O – L |
Electric load |
Rear defogger switch OFF (Rear defogger system is not operating) |
0 to 1.5 V |
| Rear defogger switch ON (Rear defogger system is operating) |
9 to 14 V |
|||
| E5-17 (TC) – E8-3 (E1) |
R – L |
Terminal TC of DLC 3 | Ignition switch ON | 9 to 14 V |
|
E5-1 (TACH) – E8-3 (E1) |
B – L |
Engine speed |
Idling |
Pulse generation (See waveform 10) |
| E7-32 (PSW) – E8-3 (E1) |
R – L |
P/S pressure switch | Ignition switch ON | 9 to 14 V |
|
E4-5 (VPMP) – E8-7 (E01) |
G – B |
Vent valve (built into canister pump module) |
Ignition switch ON |
9 to 14 V |
|
E4-6 (MPMP) – E8-7 (E01) |
L – B |
Leak detection pump (built into canister pump module) | Leak detection pump OFF | Below 3 V |
| Leak detection pump ON | 9 to 14 V | |||
|
E4-31 (PPMP) – E8-28 (E2) |
LG – BR |
Canister pressure sensor (built into canister pump module) |
Ignition switch ON |
3 to 3.6 V |
|
E4-14 (FANH) – E8-7 (E01) |
GR – B |
Fan No. 2, 3 relay |
Idling with high engine coolant temperature |
Below 1.5 V |
| E8-10 (ALT) – E8-3 (E1) |
Y – L |
Generator | Ignition switch ON | 9 to 14 V |
|
E5-33 (CANH) – E8-3 (E1) |
B – L |
CAN communication line |
Ignition switch ON |
Pulse generation (See waveform 12) |
|
E5-34 (CANL) – E8-3 (E1) |
W – L |
CAN communication line |
Ignition switch ON |
Pulse generation (See waveform 13) |
– E8-3 (E1)Enjoy!
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