Engine Control Module (ECM) Connectors
Engine Control Module (ECM) C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | PU | 1589 | Primary Fuel Level Sensor Signal |
| 2 | L-BU | 1162 | Accelerator Pedal Position Signal (2) |
| 3 | D-GN | 890 | Fuel Tank Pressure Sensor Signal |
| 4 | D-BU | 1161 | Accelerator Pedal Position Signal (1) |
| 5 | - | - | Not Used |
| 6 | D-GN | 1433 | Clutch Start Switch Signal |
| 7 | - | - | Not Used |
| 8 | BN/WH | 379 | Cruise Control Clutch Pedal Position Switch Signal |
| 9 | PU | 420 | Torque Converter Clutch Brake Switch Signal |
| 10 | WH/BK | 1164 | Accelerator Pedal Position 5-Volt Reference (1) |
| 11 | L-BU | 20 | Stop Lamp Supply Voltage |
| 12 | BN | 4 | Accessory Voltage |
| 13 | GY | 2709 | Fuel Tank Pressure Sensor 5-Volt Reference |
| 14 | D-GN/WH | 465 | Fuel Pump Primary Relay Control |
| 15-17 | - | - | Not Used |
| 18 | BN | 5069 | Engine Main Relay Coil Control |
| 19-27 | - | - | Not Used |
| 28 | PK/BK | 1039 | Run/Crank Ignition 1 Voltage |
| 29 | PU | 421 | Air Injection Reaction Solenoid Relay Coil Control |
| 30 | WH | 1310 | EVAP Canister Vent Solenoid Control |
| 31 | D-GN/WH | 459 | A/C Compressor Clutch Relay Control |
| 32-40 | - | - | Not Used |
| 41 | TN | 1274 | Accelerator Pedal Position 5-Volt Reference (2) |
| 42 | - | - | Not Used |
| 43 | D-BU | 473 | High Speed Cooling Fan Relay Control |
| 44 | - | - | Not Used |
| 45 | BN/WH | 419 | Check Engine Indicator Control |
| 46 | YE | 447 | Starter Relay Coil Control |
| 47-51 | - | - | Not Used |
| 52 | RD/WH | 840 | Battery Positive Voltage |
| 53 | BN | 1271 | Accelerator Pedal Position Low Reference (1) |
| 54 | TN | 2759 | Fuel Tank Pressure Sensor Low Reference |
| 55 | - | - | Not Used |
| 56 | PU | 1272 | Accelerator Pedal Position Low Reference (2) |
Engine Control Module (ECM) C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1-2 | - | - | Not Used |
| 3 | YE | 581 | Throttle Actuator Control Open |
| 4 | - | - | Not Used |
| 5 | BN | 582 | Throttle Actuator Control Close |
| 6-9 | - | - | Not Used |
| 10 | TN | 1744 | Fuel Injector Control (1) |
| 11 | PK/BK | 1746 | Fuel Injector Control (3) |
| 12 | L-BU/BK | 844 | Fuel Injector Control (4) |
| 13 | L-GN/BK | 1745 | Fuel Injector Control (2) |
| 14 | - | - | Not Used |
| 15 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
| 16 | - | - | Not Used |
| 17 | GY/WH | 1423 | Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (2) |
| 18 | YE | 400 | Vehicle Speed Sensor Signal |
| 19 | PU | 401 | Vehicle Speed Sensor Low Reference |
| 20-23 | - | - | Not Used |
| 24 | GY | 2701 | Throttle Position Sensor 5-Volt Reference |
| 25 | GY/BK | 2704 | Manifold Absolute Pressure Sensor 5-Volt Reference |
| 26 | L-BU/BK | 1688 | 5-Volt Reference |
| 27 | - | - | Not Used |
| 28 | GY | 2700 | A/C Pressure Sensor 5-Volt Reference (C67) |
| 29 | TN/WH | 1704 | Sensor Low Reference |
| 30 | - | - | Not Used |
| 31 | TN | 2752 | Throttle Position Sensor Low Reference |
| 32-33 | - | - | Not Used |
| 34 | PK | 5293 | Engine Main Relay Fused Control (4) |
| 36 | PU | 486 | Throttle Position Sensor Signal (2) |
| 37 | - | - | Not Used |
| 38 | TN | 2760 | Intake Air Temperature Sensor Low Reference |
| 39 | - | - | Not Used |
| 40 | OG/BK | 469 | Manifold Absolute Pressure Sensor Low Reference |
| 41 | PU/WH | 3110 | Heated Oxygen Sensor High Signal Bank 1 Sensor (1) |
| 42 | TN/WH | 3111 | Heated Oxygen Sensor Low Signal Bank 1 Sensor (1) |
| 43 | PU/WH | 1668 | Heated Oxygen Sensor High Signal Bank 1 Sensor (2) |
| 44 | TN/WH | 1669 | Heated Oxygen Sensor Low Signal Bank 1 Sensor (2) |
| 45-46 | - | - | Not Used |
| 47 | D-GN | 335 | Low Speed Cooling Fan Relay Control |
| 48 | TN/BK | 231 | Oil Pressure Switch Signal |
| 49 | OG/BK | 380 | A/C Refrigerant Pressure Sensor Signal (C67) |
| 50 | YE | 410 | Engine Coolant Temperature Sensor Signal |
| 51 | GY/WH | 23 | Generator Field Duty Cycle Signal |
| 52 | YE | 492 | Mass Air Flow Sensor Signal |
| 53 | GY/WH | 3113 | Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (1) |
| 54 | WH | 423 | Ignition Control Timing Control (1) |
| 55 | OG | 406 | Ignition Control Timing Control (2) |
| 56-57 | - | - | Not Used |
| 58 | D-GN | 485 | Throttle Position Sensor Signal (1) |
| 59 | BK/WH | 2751 | Signal Ground |
| 60 | - | - | Not Used |
| 61 | TN | 2761 | Coolant Temperature Sensor Low Reference |
| 62 | L-GN | 432 | Manifold Absolute Pressure Sensor Signal |
| 63 | OG | 225 | Generator Turn On Signal |
| 64 | TN/BK | 2500 | High Speed GMLAN Serial Data (+) (1) |
| 65 | TN | 2501 | High Speed GMLAN Serial Data (-) (1) |
| 66 | YE | 573 | Crankshaft Position Sensor Signal (1) |
| 67 | PU | 574 | Crankshaft Position Sensor Low Reference (1) |
| 68 | TN | 472 | Intake Air Temperature Sensor Signal |
| 69 | - | - | Not Used |
| 70 | BN/WH | 633 | Camshaft Position Sensor Signal |
| 71 | GY | 1716 | Knock Sensor Low Reference (1) |
| 72 | D-BU | 496 | Knock Sensor Signal (1) |
| 73 | BK/WH | 451 | Signal Ground |