Engine Control Module (ECM) X3 (LH9)
Courtesy of GENERAL MOTORS CORP. Engine Control Module (ECM) X3 (LH9)
| Pin |
Wire |
Circuit |
Function |
| 1-2 |
- |
- |
Not Used |
| 3 |
0.5 TN |
1667 |
HO2S Low Signal - Bank 2 Sensor 1 (LH9) |
| 4 |
0.5 PU |
1666 |
HO2S High Signal - Bank 2 Sensor 1 (LH9) |
| 5 |
0.5 PU |
1670 |
HO2S High Signal - Bank 2 Sensor 2 (LH9) |
| 6 |
0.5 TN |
1671 |
HO2S Low Signal - Bank 2 Sensor 2 (LH9) |
| 7 |
0.5 PU |
5428 |
Generator Regulator Control |
| 8-11 |
- |
- |
Not Available |
| 12 |
0.5 TN/BK |
464 |
Delivered Torque Signal |
| 13-14 |
- |
- |
Not Available |
| 15 |
0.5 L-GN |
3212 |
HO2S Heater Low Control - Bank 2 Sensor 1 (LH9) |
| 16 |
- |
- |
Not Available |
| 17 |
0.5 OG/BK |
463 |
Requested Torque Signal |
| 18-20 |
- |
- |
Not Available |
| 21 |
0.5 BK |
2751 |
Low Reference |
| 22 |
- |
- |
Not Available |
| 23 |
0.5 OG/BK |
469 |
Low Reference |
| 0.5 L-GN/BK |
469 |
Low Reference |
| 24-28 |
- |
- |
Not Available |
| 29 |
0.5 GY |
23 |
Generator Field Duty Cycle Signal |
| 30-32 |
- |
- |
Not Available |
| 33 |
0.5 TN |
2501 |
High Speed GMLAN Serial Data Bus - |
| 34 |
- |
- |
Not Available |
| 35 |
0.5 BK |
2761 |
Low Reference |
| 36 |
- |
- |
Not Available |
| 37 |
0.5 GY |
2700 |
5-Volt Reference 1 |
| 38 |
- |
- |
Not Available |
| 39 |
0.5 GY |
2704 |
5-Volt Reference 1 |
| 40-45 |
- |
- |
Not Available |
| 46 |
0.5 D-GN |
1786 |
Park/Neutral Signal |
| 47 |
- |
- |
Not Available |
| 48 |
0.5 D-GN/WH |
428 |
EVAP Canister Purge Solenoid Control |
| 49 |
- |
- |
Not Available (Except V08) |
| D-GN |
335 |
Low Speed Cooling Fan Low Control (V08) |
| 50 |
0.5 RD/WH |
3223 |
HO2S Heater Low Control - Bank 2 Sensor 2 (LH9) |
| 51-52 |
- |
- |
Not Available |
| 53 |
0.5 TN/WH |
2500 |
High Speed GMLAN Serial Data Bus + |
| 54 |
- |
- |
Not Available |
| 55 |
0.5 YE |
410 |
ECT Sensor Signal |
| 56 |
- |
- |
Not Available |
| 57 |
0.5 RD/BK |
380 |
A/C Refrigerant Pressure Sensor Signal |
| 58 |
- |
- |
Not Available |
| 59 |
0.5 L-GN |
432 |
MAP Sensor Signal |
| 60-72 |
- |
- |
Not Available |
| 73 |
- |
- |
Not Used |
Connector Part Information
- Harness: Engine
- OEM: 34566-1243 (Except V08)
- OEM: 34566-2393 (V08)
- Service: 88988372 (Except V08)
- Service: 12582678 (V08)
- Description: 73-Way F MX123 34566 Series, Sealed (GY) with (BK) Case
|
Terminal Part Information
- Terminal/Tray: 33467-0005/23
- Core/Insulation Crimp: J/J
- Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
|