Engine Control Module (ECM) X1
Courtesy of GENERAL MOTORS COMPANY Engine Control Module (ECM) X1
| Pin |
Wire |
Circuit |
Function |
| 1-6 |
- |
- |
Not Used |
| 7 |
0.5 WH |
17 |
Stop Lamp Switch Signal |
| 8 |
- |
- |
Not Used |
| 9 |
0.5 BN |
2759 |
Low Reference |
| 10-11 |
- |
- |
Not Used |
| 12 |
0.35 BN/WH |
419 |
MIL Control |
| 13 |
0.5 GN/WH |
465 |
Fuel Pump Relay Control |
| 14-17 |
- |
- |
Not Used |
| 18 |
0.5 D-BU |
5985 |
Accessory Wake up Serial Data |
| 19 |
0.5 PK |
439 |
Ignition 1 Voltage |
| 20 |
0.5 RD/WH |
4640 |
Battery Positive Voltage |
| 21-25 |
- |
- |
Not Used |
| 26 |
0.5 YE |
447 |
Starter Relay Coil Control |
| 27-32 |
- |
- |
Not Used |
| 33 |
0.5 WH/BK |
1164 |
5-Volt Reference 2 |
| 34 |
0.5 GY |
416 |
5-Volt Reference 1 |
| 35 |
0.5 BN/BK |
1274 |
5-Volt Reference 1 |
| 36 |
0.5 TN |
1271 |
Low Reference |
| 37 |
0.5 PU/WH |
1272 |
Low Reference |
| 38-39 |
- |
- |
Not Used |
| 40 |
0.5 OG/WH |
5069 |
PWTRAIN Relay Control |
| 41-43 |
- |
- |
Not Used |
| 44 |
0.5 PU/BK |
1589 |
Primary Fuel Level Sensor Signal |
| 45-46 |
- |
- |
Not Used |
| 47 |
0.5 D-BU/WH |
1161 |
APP Sensor 1 Signal |
| 48 |
0.35 GN |
890 |
Fuel Tank Pressure Sensor Signal |
| 49 |
0.5 L-BU |
1162 |
APP Sensor 2 Signal |
| 50 |
- |
- |
Not Used |
| 51 |
0.5 PU |
421 |
Air Solenoid Relay Control |
| 52 |
- |
- |
Not Used |
| 53 |
0.5 GN/WH |
459 |
A/C Compressor Clutch Relay Control |
| 54 |
0.5 OG |
473 |
High Speed Cooling Fan Relay Control |
| 55 |
0.5 BN/WH |
1310 |
EVAP Canister Vent Solenoid Control |
| 56 |
- |
- |
Not Used |
Connector Part Information
- Harness Type: Engine
- OEM Connector: 34576-2803
- Service Connector: 88988373
- Description: 56-Way F MX123 34576 Series (BK)
|
Terminal Part Information
- Terminated Lead: 13575575
- Release Tool: J-38125-213
- Diagnostic Test Probe: J-35616-64B (L-BU)
- Terminal/Tray: 33467-0005/23
- Core/Insulation Crimp: J/J
|