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 "Specific Condition".
Use Fig 1 above as a reference for the ECM terminals.
CONNECTOR TERMINAL REFERENCE
| Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| BATT (E5-3) - E1 (E9-1) | BR - BR | Battery (for measuring battery voltage and for ECM memory) | Always | 9 to 14 V |
| +BM (E6-6) - E1 (E9-1) | W - BR | Power source of throttle motor | Always | 9 to 14 V |
| IGSW (E5-9) - E1 (E9-1) | P - BR | Ignition switch | Ignition switch ON | 9 to 14 V |
| +B (E5-1) - E1 (E9-1) | W - BR | Power source of ECM | Ignition switch ON | 9 to 14 V |
| +B2 (E5-2) - E1 (E9-1) | W - BR | Power source of ECM | Ignition switch ON | 9 to 14 V |
| OC1+ (E9-16) - OC1- (E9-15) | G-W - G-R | Camshaft timing oil control valve (OCV) | Ignition switch ON | Pulse generation (See DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1) ) |
| MREL (E5-8) - E1 (E9-1) | B - BR | EFI relay | Ignition switch ON | 9 to 14 V |
| VC (E7-18) - E2 | (E7-28) Y - BR | Power source of sensor (specific voltage) | Ignition switch ON | 4.5 to 5.5 V |
| VG (E7-30) - EVG (E7-29) | R - L-W | Mass air flow meter | Idling, shift lever position P or N position, A/C switch OFF | 0.5 to 3.0 V |
| THA (E7-20) - E2 (E7-28) | L-B - BR | Intake air temperature sensor | Idling, intake air temp. 20°C (68°F) | 0.5 to 3.4 V |
| THW (E7-19) - E2 (E7-28) | G-B - BR | Engine coolant temperature sensor | Idling, engine coolant temp. 80°C (176°F) | 0.2 to 1.0 V |
| VTA1 (E7-21) - E2 (E7-28) | B-W - BR | Throttle position sensor (for engine control) | Ignition switch ON, accelerator pedal released | 0.3 to 1.0 V |
| VTA1 (E7-21) - E2 (E7-28) | B-W - BR | Throttle position sensor (for engine control) | Ignition switch ON, accelerator pedal depressed | 3.2 to 4.9 V |
| VTA2 (E7-31) - E2 (E7-28) | B-R - BR | Throttle position sensor (for sensor malfunction detection) | Ignition switch ON, accelerator pedal released | 2.1 to 3.1 V |
| VTA2 (E7-31) - E2 (E7-28) | B-R - BR | Throttle position sensor (for sensor malfunction detection) | Ignition switch ON, accelerator pedal depressed | 4.5 to 5.5 V |
| VPA (E5-22) - EPA (E5-28) | B - R | Accelerator pedal position sensor (for engine control) | Ignition switch ON, accelerator pedal released | 0.5 to 1.1 V |
| VPA (E5-22) - EPA (E5-28) | B - R | Accelerator pedal position sensor (for engine control) | Ignition switch ON, accelerator pedal depressed | 2.6 to 4.5 V |
| VPA2 (E5-23) - EPA2 (E5-29) | W - BR | Accelerator pedal position sensor (for sensor malfunction detection) | Ignition switch ON, accelerator pedal released | 1.2 to 2.0 V |
| VPA2 (E5-23) - EPA2 (E5-29) | W - BR | Accelerator pedal position sensor (for sensor malfunction detection) | Ignition switch ON, accelerator pedal depressed | 3.4 to 5.3 V |
| VCPA (E5-26) - EPA (E5-28) | G - R | Power source of accelerator pedal position sensor (for VPA) | Ignition switch ON | 4.5 to 5.5 V |
| VCP2 (E5-27) - EPA2 (E5-29) | L - BR | Power source of accelerator pedal position sensor (for VPA2) | Ignition switch ON | 4.5 to 5.5 V |
| HA1A (E8-5) - E04 (E8-7) | B-W - W-B | A/F sensor heater | Idling | Below 3.0 V |
| HA1A (E8-5) - E04 (E8-7) | B-W - W-B | A/F sensor heater | Ignition switch ON | 9 to 14 V |
| A1A+ (E8-23) - E1 (E9-1) | BR - BR | A/F sensor | Ignition switch ON | 3.0 to 3.6 V |
| A1A- (E8-31) - E1 (E9-1) | Y - BR | A/F sensor | Ignition switch ON | 2.7 to 3.3 V |
| HT1B (E8-21) - E1 (E9-1) | R-Y - BR | Heated oxygen sensor heater | Idling | Below 3.0 V |
| HT1B (E8-21) - E1 (E9-1) | R-Y - BR | Heated oxygen sensor heater | Ignition switch ON | 9 to 14 V |
| OX1B (E8-29) - O1B (E8-2) | G - R | Heated oxygen sensor | Maintain engine speed at 2,500 RPM for 2 minutes after warming up | Pulse generation |
| #1 (E7-1) - E01 (E7-7) | L - W-B | Injector | Ignition s itch ON switch | 9 to 14 V |
| #2 (E7-2) - E01 (E7-7) | Y - W-B | |||
| #3 (E7-3) - E01 (E7-7) | B - W-B | |||
| #4 (E7-4) - E01 (E7-7) | W - W-B | |||
| #1 (E7-1) - E01 (E7-7) | L - W-B | Injector | Idling | Pulse generation (See DTC P0300 RANDOM / MULTIPLE CYLINDER MISFIRE DETECTED; DTC P0301 CYLINDER 1 MISFIRE DETECTED; DTC P0302 CYLINDER 2 MISFIRE DETECTED; DTC P0303 CYLINDER 3 MISFIRE DETECTED; DTC P0304 CYLINDER 4 MISFIRE DETECTED ) |
| #2 (E7-2) - E01 (E7-7) | Y - W-B | |||
| #3 (E7-3) - E01 (E7-7) | B - W-B | |||
| #4 (E7-4) - E01 (E7-7) | W - W-B | |||
| KNK1 (E8-1) - FKNK1 (E8-28) | B - W | Knock sensor | Maintain engine speed at 4,000 RPM after warming up | Pulse generation (See DTC P0325 KNOCK SENSOR 1 CIRCUIT; DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW INPUT (BANK 1 OR SINGLE SENSOR); DTC P0328 KNOCK SENSOR 1 CIRCUIT HIGH INPUT (BANK 1 OR SINGLE SENSOR) ) |
| G2+ (E9-27) - NE- (E9-24) | Y - G | Camshaft position sensor | Idling | Pulse generation (See DTC P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT; DTC P0339 CRANKSHAFT POSITION SENSOR "A" CIRCUIT INTERMITTENT ) |
| NE+ (E9-25) - NE- (E9-24) | R - G | Crankshaft position sensor | Idling | Pulse generation (See DTC P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT; DTC P0339 CRANKSHAFT POSITION SENSOR "A" CIRCUIT INTERMITTENT ) |
| IGT1 (E7-8) - E1 (E9-1) | R-W - BR | Ignition coil with igniter (ignition signal) | Idling | Pulse generation (See DTC P0351 IGNITION COIL "A" PRIMARY / SECONDARY CIRCUIT; DTC P0352 IGNITION COIL "B" PRIMARY / SECONDARY CIRCUIT; DTC P0353 IGNITION COIL "C" PRIMARY / SECONDARY CIRCUIT; DTC P0354 IGNITION COIL "D" PRIMARY / SECONDARY CIRCUIT ) |
| IGT2 (E7-9) - E1 (E9-1) | P - BR | |||
| IGT3 (E7-10) - E1 (E9-1) | Y-B - BR | |||
| IGT4 (E7-11) - E1 (E9-1) | L-Y - BR | |||
| IGF1 (E7-24) - E1 (E9-1) | W-R - BR | Ignition coil with igniter (ignition confirmation signal) | Ignition switch ON | 4.5 to 5.5 V |
| IGF1 (E7-24) - E1 (E9-1) | W-R - BR | Ignition coil with igniter (ignition confirmation signal) | Idling | Pulse generation (See DTC P0351 IGNITION COIL "A" PRIMARY / SECONDARY CIRCUIT; DTC P0352 IGNITION COIL "B" PRIMARY / SECONDARY CIRCUIT; DTC P0353 IGNITION COIL "C" PRIMARY / SECONDARY CIRCUIT; DTC P0354 IGNITION COIL "D" PRIMARY / SECONDARY CIRCUIT ) |
| PRG (E7-34) - E1 (E9-1) | G - BR | Purge valve | Ignition switch ON | 9 to 14 V |
| VPMP (E7-27) - E1 (E9-1) | Y-G - BR | Vent valve (Build in pump module) | Ignition switch ON | 9 to 14 V |
| MPMP (E5-4) - E1 (E9-1) | LG - BR | Vacuum pump (Build in pump module) | Vacuum pump OFF | 0 to 3 V |
| MPMP (E5-4) - E1 (E9-1) | LG - BR | Vacuum pump (Build in pump module) | Vacuum pump ON | 9 to 14 V |
| PPMP (E5-21) - E2 (E7-28) | L - BR | Pressure sensor (Build in pump module) | Ignition switch ON | 3 to 3.6 V |
| SPD (E6-17) - E1 (E9-1) | Y - BR | Speed signal from combination meter | Ignition switch ON, rotate driving wheel slowly | Pulse generation (See DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH ) |
| STA (E7-17) - E1 (E9-1) | B - BR | Starter signal | Shift lever position P or N, ignition switch START | 9 to 14 V |
| STP (E6-19) - E1 (E9-1) | BR - BR | Stop lamp switch | Brake pedal is depressed | 7.5 to 14 V |
| STP (E6-19) - E1 (E9-1) | BR - BR | Stop lamp switch | Brake pedal is released | Below 1.5 V |
| ST1 (E6-12) - E1 (E9-1) | V - BR | Stop lamp switch | Ignition switch ON, Brake pedal is depressed | Below 1.5 V |
| ST1 (E6-12) - E1 (E9-1) | V - BR | Stop lamp switch | Ignition switch ON, Brake pedal is released | 7.5 to 14 V |
| NSW (E7-16) - E1 (E9-1) | B-R - BR | PNP switch | Ignition switch ON, shift position at P or N | 0 to 3.0 V |
| NSW (E7-16) - E1 (E9-1) | B-R - BR | PNP switch | Ignition switch ON, shift position is not P or N | 9 to 14 V |
| M+ (E9-3) - ME01 (E9-4) | B - W-B | Throttle actuator | Idling | Pulse generation |
| M- (E9-2) - ME01 (E9-4) | W - W-B | Throttle actuator | Idling | Pulse generation |
| FC (E5-10) - E1 (E9-1) | Y - BR | Fuel pump control | Ignition switch ON | 9 to 14 V |
| W (E5-11) - E1 (E9-1) | SB - BR | MIL | Ignition switch ON | Below 3.0 V |
| W (E5-11) - E1 (E9-1) | SB - BR | MIL | Idling | 9 to 14 V |
| ELS2 (E5-12) - E1 (E9-1) | G - BR | Electric load | Power outlet OFF | 0 to 1.5 V |
| ELS2 (E5-12) - E1 (E9-1) | G - BR | Electric load | Power outlet ON | 7.5 to 14 V |
| TC (E5-20) - E1 (E9-1) | O - BR | Terminal TC of DLC3 | Ignition switch ON | 9 to 14 V |
| SIL (E5-18) - E1 (E9-1) | R - BR | Terminal SIL of DLC3 | During charge of gears | Pulse generation |
| TACH (E5-5) - E1 (E9-1) | B - BR | Engine speed | Idling | Pulse generation |
| PSW (E9-10) - E1 (E9-1) | R-L - BR | PS oil pressure switch | Ignition switch ON | 9 to 14 V |