Terminals Of ECM
HINT:
Each ECM terminal's standard voltage is shown in the table below. In the table, first follow the information under "Condition". Next look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition". Use the illustration above as a reference for the ECM terminals.
TERMINALS AND REFERENCE VALUE
| Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| BATT (E4-3) - E1 (E6-1) | B-W - BR | Battery (for measuring battery voltage and for ECM memory) | Always | 9 to 14 V |
| BM (E5-6) - E1 (E6-1) | R - BR | Power source of throttle motor | Always | 9 to 14 V |
| IGSW (E4-9) - E1 (E6-1) | B-O - BR | Ignition switch | Ignition switch ON | 9 to 14 V |
| +B (E4-1) - E1 (E6-1) | B-R - BR | Power source of ECM | Ignition switch ON | 9 to 14 V |
| +B2 (E4-2) - E1 (E6-1) | B-R - BR | Power source of ECM | Ignition switch ON | 9 to 14 V |
| OC1+ (E6-16) - OC1- (E6-15) | G-W - G-R | Camshaft timing oil control valve (OCV) (Intake side (bank 1)) |
Ignition switch ON | Pulse generation |
| OC2+ (E6-14) - OC2- (E6- 13) | L-R - G-B | Camshaft timing oil control valve (OCV) (Intake side (bank 2)) |
Ignition switch ON | Pulse generation |
| MREL (E4-8) - E1 (E6-1) | B-W - BR | EFI relay | Ignition switch ON | 9 to 14 V |
| VC (E8-18) - E2 (E8-28) | Y - BR | Power source for sensors (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| VG (E8-30) - E2G (E8-29) | R - L-W | Mass air flow meter | Idling, Shift lever position P or N, A/C switch OFF | 0.5 to 3.0 V |
| THA (E8-20) - E2 (E8-28) | L-B - BR | Intake air temperature sensor | Idling, Intake air temperature 20°C (68°F) | 0.5 to 3.4 V |
| THW (E8-19) - E2 (E8-28) | G-B - BR | Engine coolant temperature sensor | Idling, Engine coolant temperature 80°C (176°F) | 0.2 to 1.0 V |
| VTA1 (E8-21) - E2 (E8-28) | LG - BR | Throttle position sensor (for engine control) | Ignition switch ON, Throttle valve fully closed | 0.5 to 1.2 V |
| Ignition switch ON, Throttle valve fully open | 3.2 to 4.8 V | |||
| VTA2 (E8-31) - E2 (E8-28) | B-R - BR | 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 5.0 V | |||
| VPA (E4-22) - EPA (E4-28) | L-Y - R-B | 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 | |||
| VPA2 (E4-23) - EPA2 (E4- 29) | W-R - LG | Accelerator pedal position sensor (for sensor malfunctioning 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 | |||
| VCPA (E4-26) - EPA (4-28) | GR-R - R-B | Power source of accelerator pedal position sensor (for VPA) | Ignition switch ON | 4.5 to 5.0 V |
| VCP2 (E4-27) - EPA2 (E4- 29) | B-R - LG | Power source of accelerator pedal position sensor (for VPA2) | Ignition switch ON | 4.5 to 5.0 V |
| HA1A (E7-5) - E04 (E7-7) | B-W - W-B | A/F sensor heater | Idling | Below 3.0 V |
| HA2A (E7-4) - E05 (E7-6) | B-R - W-B | Ignition switch ON | 9 to 14 V | |
| A1A+ (E7-22) - E1 (E6-1) | BR - BR | A/F sensor | Ignition switch ON | 3.0 to 3.6 V |
| A2A+ (E7-23) - E1 (E6-1) | P - BR | A/F sensor | Ignition switch ON | 3.0 to 3.6 V |
| A1A- (E7-30) - E1 (E6-1) | Y - BR | A/F sensor | Ignition switch ON | 2.7 to 3.3 V |
| A2A- (E7-31) - E1 (E6-1) | L - BR | A/F sensor | Ignition switch ON | 2.7 to 3.3 V |
| HT1B (E7-25) - E1 (E6-1) | R-Y - BR | Heated oxygen sensor heater | Idling | Below 3.0 V |
| HT2B (E7-33) - E1 (E6-1) | W-L - BR | Ignition switch ON | 9 to 14 V | |
| OX1B (E7-21) - E2 (E8- 28) | W - BR | Heated oxygen sensor | Maintain engine speed at 2,500 rpm for 2 minutes after warming up sensor | Pulse generation |
| OX2B (E7-29) - E2 (E8-28) | B - BR | |||
| #10 (E8-1) - E01 (E8-7) | L - W-B | Injector | Ignition switch ON | 9 to 14 V |
| #20 (E8-2) - E01 (E8-7) | R - W-B | Idling | Pulse generation | |
| #30 (E8-3) - E01 (E8-7) | B - W-B | |||
| #40 (E8-4) - E01 (E8-7) | W - W-B | |||
| #50 (E8-5) - E01 (E8-7) | R-L - W-B | |||
| #60 (E7-3) - E01 (E8-7) | G - W-B | |||
| KNK1 (E7-1) - EKNK (E7- 28) | B - W | Knock sensor | Maintain engine speed at 4,000 after warming up | Pulse generation |
| KNK2 (E7-2) - EKN2 (E7- 20) | R - G | Knock sensor | Maintain engine speed at 4,000 after warming up | Pulse generation |
| VV1+ (E6-27) - NE- (E6- 24) | B-W - G | Variable valve timing (VVT) sensor | Idling | Pulse generation |
| VV2+ (E6-26) - NE- (E6- 24) | L - G | Variable valve timing (VVT) sensor | Idling | Pulse generation |
| NE+ (E6-25) - NE- (E6-24) | R - G | Crankshaft position sensor | Idling | Pulse generation |
| IGT1 (E8-8) - E1 (E6-1) | G-R - BR | Ignition coil (ignition signal) | Idling | Pulse generation |
| IGT2 (E8-9) - E1 (E6-1) | G-Y - BR | |||
| IGT3 (E8-10) - E1 (E6-1) | L-R - BR | |||
| IGT4 (E8-11) - E1 (E6-1) | L-Y - BR | |||
| IGT5 (E8-12) - E1 (E6-1) | P - BR | |||
| IGT6 (E8-13) - E1 (E6-1) | R-L - BR | |||
| IGF1 (E8-24) - E1 (E6-1) | B - BR | Ignition coil (ignition confirmation signal) | Ignition switch ON | 4.5 to 5.5 V |
| Idling | Pulse generation | |||
| PRG (E8-34) - E1 (E6-1) | G - BR | EVAP VSV | Ignition switch ON | 9 to 14 V |
| CCV (E8-27) - E1 (E6-1) | L - BR | Canister closed control valve | Ignition switch ON | 9 to 14 V |
| PTNK (E4-21) - E2 (E8-28) | V-R - BR | Vapor pressure sensor | Ignition switch ON | 2.9 to 3.7 V |
| Ignition switch ON, apply vacuum 4.0 kPa (30 mmHg, 1.18 in.Hg) | Below 0.5 V | |||
| SPD (E5-17) - E1 (E6-1) | V-W - BR | Speed signal from combination meter | Ignition switch ON, Rotate driving wheel slowly | Pulse generation |
| STA (E8-17) - E1 (E6-1) | B-L - BR | Starter signal | Cranking | 6 V or higher |
| STP (E5-19) - E1 (E6-1) | G-W - BR | Stop light switch | Ignition switch ON, Brake pedal depressed | 7.5 to 14 V |
| Ignition switch ON, Brake pedal released | Below 1.5 V | |||
| ST1- (E5-12) - E1 (E6-1) | LG-R - BR | Stop light switch (opposite to STP terminal) | Ignition switch ON, Brake pedal depressed | Below 1.5 V |
| Ignition switch ON, Brake pedal released | 7.5 to 14 V | |||
| NSW (E8-16) - E1 (E6-1) | B-Y - BR | Park/neutral position switch | Ignition switch ON, Shift lever position in P or N | Below 3.0 V |
| Ignition switch ON, Shift except lever position in P or N | 9 to 14 V | |||
| M+ (E6-3) - ME01 (E6-4) | B - W-B | Throttle actuator | Idling | Pulse generation |
| M- (E6-2) - ME01 (E6-4) | W - W-B | Throttle actuator | Idling | Pulse generation |
| FC (E4-10) - E1 (E6-1) | V-G - BR | Fuel pump control | Ignition switch ON | 9 to 14 V |
| Idling | 0 to 3 V | |||
| W (E4-11) - E1 (E6-1) | B-Y - BR | MIL | Ignition switch ON | Below 3.0 V |
| Idling | 9 to 14 V | |||
| ELS (E4-12) - E1 (E6-1) | BR-R - BR | Electric load | Light control switch OFF | 0 to 1.5 V |
| Light control switch in TAIL position | 9 to 14 V | |||
| TC (E4-20) - E1 (E6-1) | P-B - BR | Terminal TC of DLC 3 | Ignition switch ON | 9 to 14 V |
| SIL (E4-18) - E1 (E6-1) | W - BR | Terminal SIL of DLC 3 | During transmission | Pulse generation |
| TACH (E4-5) - E1 (E6-1) | B-O - BR | Engine speed | Idling | Pulse generation |
| RL (E6-21) - E1 (E6-1) | R-L - BR | Generator | Idling | 9 to 14 V |
| AICV (E8-33) - E1 (E6-1) | W - BR | VSV for AICV | Ignition switch ON | 9 to 14 V |
| AICS (E8-15) - E1 (E6-1) | R-Y - BR | VSV for AICV | Ignition switch ON | 9 to 14 V |
| ENG+ (E4-24) - ENG- (E4- 30) | P - V | Electric load (from skid control ECU) | Idling | Pulse generation |
| TRC+ (E4-25) - TRC- (E4-31) | LG-B - LG-R | Electric load (from skid control ECU) | Idling | Pulse generation |
| PSW (E6-10) - E1 (E6-1) | R-W - BR | P/S pressure switch | Ignition switch ON | 9 to 14 V |