ECM/PCM Inputs and Outputs at Connector B (24P)
NOTE:
Standard battery voltage is about 12 V.
ECM/PCM CONNECTOR B REFERENCE TABLE
| Terminal number | Wire color | Terminal name | Description | Signal |
|---|---|---|---|---|
| 1 | BLU/WHT | VTC (VTC OIL CONTROL SOLENOID VALVE) | Drives VTC oil control solenoid valve | With ignition switch ON (II): about 0 V |
| 2 | YEL | INJ4 (No. 4 INJECTOR) | Drives No. 4 injector | At idle: duty controlled With ignition switch ON (II): battery voltage |
| 3 | BLU | INJ3 (No. 3 INJECTOR) | Drives No. 3 injector | |
| 4 | RED | INJ2 (No. 2 INJECTOR) | Drives No. 2 injector | |
| 5 | BRN | INJ1 (No. 1 INJECTOR) | Drives No. 1 injector | |
| 6 | GRN/YEL | VTS (ROCKER ARM OIL CONTROL SOLENOID) | Drives rocker arm oil control solenoid | At idle: about 0 V |
| 8 | RED/WHT | ECT1 (ENGINE COOLANT TEMPERATURE SENSOR 1) | Detects ECT sensor 1 signal | With ignition switch ON (II): about 0.1- 4.8 V (depending on engine coolant temperature) With fully warmed up engine: about 0.5-0.7 V |
| 10 | WHT/BLU | ALTL (ALTERNATOR L SIGNAL) | Detects alternator signal | With ignition switch ON (II): about 0 V With engine running: battery voltage |
| 11 | BLU/BLK | VTPSW (ROCKER ARM OIL PRESSURE SWITCH) | Detects rocker arm oil pressure switch signal | At low engine speed: about 0 V At high engine speed: battery voltage |
| 13 | WHT/RED | ALTF (ALTERNATOR FR SIGNAL) | Detects alternator FR signal | With engine running: about 0-5.0 V (depending on electrical load) |
| 17 | RED/YEL | IAT (INTAKE AIR TEMPERATURE SENSOR) | Detects IAT sensor signal | With ignition switch ON (II): about 0.1-4.8 V (depending on intake air temperature) |
| 18 | WHT/GRN | ALTC (ALTERNATOR CONTROL) | Sends alternator control signal | With fully warmed up engine running: about 8.0 V |
| 19 | GRN | SEFD (THROTTLE ACTUATOR CONTROL SERIAL SIGNAL) | Sends throttle actuator control serial signal | - |
| 20 | BLU | SEDF (THROTTLE ACTUATOR CONTROL SERIAL SIGNAL) | Detects throttle actuator control serial signal | - |
| 21 | YEL/GRN | PCS (EVAPORATIVE EMISSION CANISTER PURGE VALVE) | Drives EVAP canister purge valve | With engine running, engine coolant below 131°F (55°C): battery voltage With engine running, engine coolant above 131°F (55°C): duty controlled |