ECM/PCM Inputs and Outputs at Connector C (◦) (44P)
NOTE:
Standard battery is about 12 V.
BATTERY VOLTAGE REFERENCE
| Terminal number | Wire color | Terminal name | Description | Signal |
|---|---|---|---|---|
| 1 | WHT | IG1 ETCS (IGNITION SIGNAL ETCS) | Detects ignition signal | With ignition switch ON (II): battery voltage |
| 2 | BLK | PGMETCS (POWER GROUND ETCS) | Ground circuit for ECM/ PCM circuit | Less than 1.0 Vat all times |
| 3 | GRN/YEL | ETCSM- (THROTTLE ACTUATOR -SIDE) | Ground for throttle actuator | With ignition switch ON (II): about 0 V |
| 4 | BLU/RED | ETCSM+ (THROTTLE ACTUATOR +SIDE) | Drives throttle actuator | With ignition switch ON (II): about 0 V |
| 5 | BRN | INJ1 (No. 1 INJECTOR) | Drives No. 1 injector | At idle: duty controlled With ignition switch ON (II): battery voltage |
| 6 | RED | INJ2 (No. 2 INJECTOR) | Drives No. 2 injector | |
| 7 | BLU | INJ3 (No. 3 INJECTOR) | Drives No. 3 injector | |
| 8 | YEL | INJ4 (No. 4 INJECTOR) | Drives No. 4 injector | |
| 9 | WHT/GRN | AFSHTC (AIR FUEL RATIO (A/F) SENSOR HEATER CONTROL (SENSOR 1)) | Drives A/F sensor heater (sensor 1) | With ignition switch ON (II): battery voltage With fully warmed up engine running: about 0 V |
| 11 | GRN/RED | MAP (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) | Detects MAP sensor signal | With ignition switch ON (II): about 3.0 V At idle: about 1.0 V (depending on engine speed) |
| 12 | BLU | VCC3 (SENSOR VOLTAGE) | Provides sensor reference voltage | With ignition switch ON (II): about 5.0 V |
| 13 | YEL/RED | VCC1 (SENSOR VOLTAGE) | Provides sensor reference voltage | With ignition switch ON (II): about 5.0 V |
| 14 | GRN/WHT | SG1 (SENSOR GROUND) | Sensor ground | Less than 1.0 V at all times |
| 15 | YEL/GRN | IGPLS1 (No. 1 IGNITION COIL PULSE) | Drives No. 1 ignition coil | With ignition switch ON (II): about 0 V With engine running: pulses |
| 16 | BLU/RED | IGPLS2 (No. 2 IGNITION COIL PULSE) | Drives No. 2 ignition coil | |
| 17 | WHT/BLU | IGPLS3 (No. 3 IGNITION COIL PULSE) | Drives No. 3 ignition coil | |
| 18 | BRN | IGPLS4 (No. 4 IGNITION COIL PULSE) | Drives No. 4 ignition coil | |
| 20 | RED/BLK | TPSA (THROTTLE POSITION (TP) SENSOR A) | Detects TP sensor A signal | With throttle fully open: about 3.9 V With throttle fully closed: about 0.9 V |
| 21 | RED/BLU | TPSB (THROTTLE POSITION (TP) SENSOR B) | Detects TP sensor B signal | With throttle fully open: about 4.1 V With throttle fully closed: about 1.7 V |
| 22 | BLU/BLK | VTPSW (ROCKER ARM OIL PRESSURE SWITCH) | Detects rocker arm oil pressure switch signal | With engine at low speed: about 0 V With engine at high speed: battery voltage |
| 23 | BLU/WHT | VTC (VTC OIL CONTROL SOLENOID VALVE) | Drives VTC oil control solenoid valve | with ignition switch ON (II): about 0 V |
| 27 | WHT/RED | SHO2S (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2)) | Detects secondary HO2S (sensor 2) signal | With throttle fully opened at idle and fully warmed up engine: about 0.6 V With throttle quickly closed: below 0.4 V |
| 29 | RED | AFS+ (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) +SIDE) | Detects A/F sensor (sensor 1) signal | |
| 30 | RED/YEL | AFS- (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) -SIDE) | Detects A/F sensor (sensor 1) signal | |
| 31 | GRN | CMPB (CAMSHAFT POSITION (CMP) SENSOR B) | Detects CMP sensor B signal | With engine running: pulses |
| 32 | BLU/YEL | CKP (CRANKSHAFT POSITION (CKP) SENSOR) | Detects CKP sensor signal | With engine running: pulses |
| 36 | BLK/GRN | IG1 (IGNITION SIGNAL) | Detects ignition signal | With ignition switch ON (II): battery voltage |
| 39 | GRN | SG3 (SENSOR GROUND) | Sensor ground | Less than 1.0 V at all times |
| 40 | BRN/YEL | LG1 (LOGIC GROUND) | Ground circuit for ECM/ PCM circuit | Less than 1.0 V at all times |
| 41 | BLU/WHT | CMPA (CAMSHAFT POSITION (CMP) SENSOR A) | Detects CMP sensor A signal | With engine running: pulses |
| 42 | RED/BLU | KS(KNOCK SENSOR) | Detects knock sensor signal | With engine knocking: pulses |
| 43 | BLK/WHT | NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) | Detects output shaft (countershaft) speed sensor signals | With ignition switch ON (II): pulses With vehicle moving: about 5.0 V (pulses) |
| 44 | BRN/YEL | LG2 (LOGIC GROUND) | Ground circuit for ECM/ PCM circuit | Less than 1.0 V at all times |