PCM Inputs and Outputs at PCM Connector C (◦) (51P)
| Terminal number | Wire color | Terminal name | Description | Signal |
|---|---|---|---|---|
| 1 | BLK | PGM (POWER GROUND) | Ground for PCM | Less than 0.2 V at all times |
| 2 | LT BLU | MTR2 (THROTTLE ACTUATOR +SIDE) | Drives throttle actuator | With vehicle in ON mode: about 0 V |
| 3 | WHT | MTR1 (THROTTLE ACTUATOR -SIDE) | Ground for throttle actuator | With vehicle in ON mode: about 0 V |
| 4 | GRN | IG1M (IGNITION SIGNAL ETCS) | Detects ignition signal | With vehicle in ON mode: battery voltage |
| 5 | PUR | SO2HT B1 (REAR SECONDARY HEATED OXYGEN SENSOR (REAR SECONDARY HO2S (BANK 1, SENSOR 2) HEATER CONTROL) | Drives rear secondary HO2S (Bank 1, sensor 2) heater | With vehicle in ON mode: battery voltage With warmed up engine running: duty controlled |
| 6 | TAN | AFHT B1 (REAR AIR FUEL RATIO (REAR A/F) SENSOR (BANK 1, SENSOR 1) HEATER CONTROL) | Drives rear A/F sensor (Bank 1, sensor 1) heater | With vehicle in ON mode: battery voltage With warmed up engine running: about 0 V or duty controlled |
| 7 | RED | SO2HT B2 (FRONT SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S (BANK 2, SENSOR 2) HEATER CONTROL) | Drives front secondary HO2S (Bank 2, sensor 2) heater | With vehicle in ON mode: battery voltage With warmed up engine running: duty controlled |
| 8 | GRY | AFHT B2 (FRONT AIR FUEL RATIO (FRONT A/F) SENSOR (BANK 2, SENSOR 1) HEATER CONTROL) | Drives front A/F sensor (Bank 2, sensor 1) heater | With vehicle in ON mode: battery voltage With warmed up engine running: about 0 V or duty controlled |
| 9 | Not used | Not used | ||
| 10 | Not used | Not used | ||
| 11 | BLU | CRK (CRANKSHAFT POSITION (CKP) SENSOR) | Detects CKP sensor signal | With engine running: pulses |
| 12*1 | RED | PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE) | Drives EVAP canister purge valve | With engine running, engine coolant below 140 deg.F (60 deg.C): battery voltage With engine running, engine coolant above 140 deg.F (60 deg.C): duty controlled |
| 12*2 | RED | PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE) | Drives EVAP canister purge valve | With engine running, engine coolant below 149 deg.F (65 deg.C): battery voltage With engine running, engine coolant above 149 deg.F (65 deg.C): duty controlled |
| 13 | PUR | E EGR (EXHAUST GAS RECIRCULATION (EGR) VALVE) | Drives EGR valve | With EGR operating: duty controlled With EGR not operating: about 0 V |
| 14 | GRN | CSS (ROCKER ARM OIL CONTROL SOLENOID B (BANK 1)) | Drives rocker arm oil control solenoid B (Bank 1) | With vehicle in ON mode or at idle: about 0 V |
| 15 | LT GRN | VTSB1 (ROCKER ARM OIL CONTROL SOLENOID A (BANK 1)) | Drives rocker arm oil control solenoid A (Bank 1) | At idle: about 0 V |
| 16 | LT BLU | VTSB2 (ROCKER ARM OIL CONTROL SOLENOID A (BANK 2)) | Drives rocker arm oil control solenoid A (Bank 2) | At idle: about 0 V |
| 17 | LT GRN | IJF1 (INJECTOR DIAG SIGNAL1) | No. 1, No. 5 injector return signal | With vehicle in ON mode: about 5.0 V With engine running: pulses |
| 18 | GRY | IJF2 (INJECTOR DIAG SIGNAL2) | No. 3, No. 4 injector return signal | With vehicle in ON mode: about 5.0 V With engine running: pulses |
| 19 | PUR | IJF3 (INJECTOR DIAG SIGNAL3) | No. 2, No. 6 injector return signal | With vehicle in ON mode: about 5.0 V With engine running: pulses |
| 20 | BLK | GND3 PG (POWER GROUND) | Ground for PCM | Less than 0.2 V at all times |
| 21 | TAN | NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) | Detects output shaft (countershaft) speed sensor signal | With vehicle in ON mode: about 0 V or about 5.0 V While driving: pulses |
| 22 | PUR | VTMB1 (ROCKER ARM OIL PRESSURE SWITCH A (BANK 1)) | Detects rocker arm oil pressure switch A (Bank 1) signal | With vehicle in ON mode: about 0 V With engine running: about 0.7 V |
| 23 | LT GRN | VTMB2 (ROCKER ARM OIL PRESSURE SWITCH A (BANK 2)) | Detects rocker arm oil pressure switch A (Bank 2) signal | With vehicle in ON mode: about 0 V With engine running: about 0.7 V |
| 24 | Not used | Not used | ||
| 25 | LT GRN | VSB1 (VS CELL+BANK 1) | Detects rear A/F sensor (Bank 1, sensor 1) VS CELL signal | With warmed up engine running: about 3.4-4.8 V |
| 26 | RED | VCENTB1 (VIRTUAL GROUND BANK 1) | Provides reference voltage for rear A/F sensor (Bank 1, sensor 1) | With warmed up engine at idle: about 3.4-3.8 V |
| 27 | Not used | Not used | ||
| 28 | WHT | VSB2 (VS CELL+BANK 2) | Detects front A/F sensor (Bank 2, sensor 1) VS CELL signal | With warmed up engine running: about 3.4-4.8 V |
| 29 | YEL | VCENTB2 (VIRTUAL GROUND BANK 2) | Provides reference voltage for front A/F sensor (Bank 2, sensor 1) | With warmed up engine at idle: about 3.4-4.8 V |
| 30 | GRN | SO2B1 (REAR SECONDARY HEATED OXYGEN SENSOR (REAR SECONDARY HO2S (BANK 1, SENSOR 2))) | Detects rear secondary HO2S (Bank 1, sensor 2) signal | With throttle fully opened from idle and warmed up engine: about 0.6 V *With throttle quickly closed: below 0.4 V* (*: between SO2B1 terminal and SO2SGB1 terminal) |
| 31 | BLU | SO2B2 (FRONT SECONDARY HEATED OXYGEN SENSOR (FRONT SECONDARY HO2S (BANK 2, SENSOR 2))) | Detects front secondary HO2S (Bank 2, sensor 2) signal | With throttle fully opened from idle and warmed up engine: about 0.6 V *With throttle quickly closed: below 0.4 V* (*: between SO2B2 terminal and SO2SGB2 terminal) |
| 32 | PNK | VCC1 (SENSOR VOLTAGE) | Provides sensor reference voltage | With vehicle in ON mode: about 5.0 V |
| 33 | BLU | SG1 (SENSOR GROUND) | Sensor ground | Less than 0.2 V at all times |
| 34 | TAN | VCMSW (ROCKER ARM OIL PRESSURE SWITCH B (BANK 1)) | Detects rocker arm oil pressure switch B (Bank 1) signal | With vehicle in ON mode or at idle: battery voltage |
| 35 | Not used | Not used | ||
| 36 | Not used | Not used | ||
| 37 | GRN | IPB1 (IP CELL+ BANK 1) | Detects rear A/F sensor (Bank 1, sensor 1) pump cell | With engine running: about 2.0-5.6 V |
| 38 | PUR | IPB2 (IP CELL+ BANK 2) | Detects front A/F sensor (Bank 2, sensor 1) pump cell | With engine running: about 2.0-5.6 V |
| 39 | WHT | SO2SGB1 (REAR SECONDARY HEATED OXYGEN SENSOR (REAR SECONDARY HO2S (BANK 1, SENSOR 2)) SENSOR GROUND) | Sensor ground for rear secondary HO2S (Bank 1, sensor 2) | With vehicle in ON mode: about 1.5 V |
| 40 | YEL | SO2SGB2 (FRONT SECONDARY HEATED OXYGEN SENSOR (FRONT SECONDARY HO2S (BANK 2, SENSOR 2)) SENSOR GROUND) | Sensor ground for front secondary HO2S (Bank 2, sensor 2) | With vehicle in ON mode: about 1.5 V |
| 41 | RED | KSB1 (KNOCK SENSOR 1 (BANK 1)) | Detects knock sensor 1 (Bank 1) signal | With engine knocking: pulses Without engine knocking: 0 V |
| 42 | GRN | KSSGB1 (KNOCK SENSOR 1 (BANK 1) GROUND) | Sensor ground for knock sensor 1 (Bank 1) | Less than 0.2 V at all times |
| 43 | WHT | KSB2 (KNOCK SENSOR 2 (BANK 2)) | Detects knock sensor 2 (Bank 2) signal | With engine knocking: pulses Without engine knocking: 0 V |
| 44 | BLK | KSSGB2 (KNOCK SENSOR 2 (BANK 2) GROUND) | Sensor ground for knock sensor 2 (Bank 2) | Less than 0.2 V at all times |
| 45 | PUR | PB (MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR) | Detects MAP sensor signal | With vehicle in ON mode: about 3.0 V At idle: about 1.0 V (depending on engine speed) |
| 46 | LT BLU | EGRL (EXHAUST GAS RECIRCULATION (EGR) VALVE POSITION SENSOR) | Detects EGR valve position sensor signal | With engine running: about 1.2-3.0 V (depending) on EGR valve lift) |
| 47 | Not used | Not used | ||
| 48 | PNK | TW (ENGINE COOLANT TEMPERATURE SENSOR (ECT) SENSOR 1) | Detects ECT sensor 1 signal | With vehicle in ON mode: about 0.1-4.8 V (depending) on engine coolant temperature) |
| 49 | TAN | TA(AFM) (INTAKE AIR TEMPERATURE (IAT) SENSOR) | Detects IAT sensor signal | With vehicle in ON mode: about 0.1-4.8 V (depending) on intake air temperature) |
| 50 | GRN | FPF (HIGH PRESSURE FUEL PUMP) | Detects high pressure fuel pump return signal | With vehicle in ON mode: about 5.0 V With engine running: pulses |
| 51 | WHT | HPTI (HIGH PRESSURE FUEL PUMP) | Detects high pressure fuel pump drive signal | With vehicle in ON mode: about 0 V With engine running: duty controlled |
*1: USA and Canada models
*2: Mexico model