Engine Control Module (ECM) X2 (LF1) Connector End View
Courtesy of GENERAL MOTORS CORP. Engine Control Module (ECM) X2 (LF1)
| Pin |
Wire |
Circuit |
Function |
| 1-2 |
- |
- |
Not Used |
| 3 |
0.5 TN |
808 |
Low Reference |
| 4-7 |
- |
- |
Not Used |
| 8 |
0.5 PU/WH |
821 |
Vehicle Speed Sensor (VSS) High Signal (MV7) |
| 9 |
- |
- |
Not Used |
| 10 |
0.5 PU/WH |
3110 |
Reference Voltage - Bank 1 Sensor 1 |
| 11 |
0.5 PU/WH |
3210 |
HO2S Reference Voltage - Bank 2 Sensor 1 |
| 12 |
0.5 PU |
3120 |
HO2S High Signal - Bank 1 Sensor 2 |
| 13 |
0.5 PU |
3220 |
HO2S High Signal - Bank 2 Sensor 2 |
| 14-15 |
- |
- |
Not Used |
| 16 |
0.5 BN |
582 |
TAC Motor Control - 2 |
| 17 |
- |
- |
Not Used |
| 18 |
0.5 GY |
598 |
5-Volt Reference 1 |
| 19 |
0.5 YE |
2918 |
Fuel Rail Pressure (FRP) Sensor Signal |
| 20-22 |
- |
- |
Not Used |
| 23 |
0.5 L-GN |
5007 |
Backup Lamp Switch Signal |
| 24-25 |
- |
- |
Not Used |
| 26 |
0.5 TN/WH |
3111 |
Low Reference - Bank 1 Sensor 1 |
| 27 |
0.5 TN/WH |
3211 |
HO2S Low Signal - Bank 2 Sensor 1 |
| 28 |
0.5 TN/WH |
3121 |
Low Reference - Bank 1 Sensor 2 |
| 29 |
0.5 TN |
3221 |
Low Reference - Bank 2 Sensor 2 |
| 30-31 |
- |
- |
Not Used |
| 32 |
0.5 YE |
581 |
TAC Motor Control - 1 |
| 33 |
0.5 D-GN |
485 |
TP Sensor 1 Signal |
| 34 |
0.5 GY |
2701 |
5-Volt Reference 4 |
| 35 |
0.5 PU |
486 |
TP Sensor 2 Signal |
| 36 |
0.5 D-BU |
496 |
Knock Sensor (KS) 1 Signal |
| 37 |
0.5 L-BU |
1876 |
Knock Sensor (KS) 2 Signal |
| 38-40 |
- |
- |
Not Used |
| 41 |
0.5 GY/WH |
3113 |
HO2S Heater Low Control - Bank 1 Sensor 1 |
| 42 |
0.5 GY/WH |
3122 |
HO2S Heater Low Control - Bank 1 Sensor 2 |
| 43 |
0.5 L-GN |
432 |
MAP Sensor Signal |
| 44 |
0.5 GY |
2704 |
5-Volt Reference 3 |
| 45-48 |
- |
- |
Not Used |
| 49 |
0.5 L-BU |
6289 |
Intake Air Temperature (IAT) Sensor Signal |
| 50 |
- |
- |
Not Used |
| 51 |
0.5 D-GN/WH |
428 |
EVAP Canister Purge Solenoid Control |
| 52 |
0.5 YE |
492 |
MAF Sensor Signal |
| 53 |
0.5 OG |
225 |
Generator Turn On Signal |
| 54 |
0.5 TN |
2752 |
Low Reference |
| 55 |
0.5 GY |
23 |
Generator Field Duty Cycle Signal |
| 56 |
0.5 GY |
1716 |
Low Reference |
| 57 |
0.5 GY |
2303 |
Low Reference |
| 58 |
0.5 OG/BK |
1786 |
Transmission Park/Neutral Signal |
| 59-60 |
- |
- |
Not Used |
| 61 |
0.5 L-GN |
3212 |
HO2S Heater Low Control - Bank 2 Sensor 1 |
| 62 |
0.5 OG/WH |
3223 |
HO2S Heater Low Control - Bank 2 Sensor 2 |
| 63 |
0.5 OG/BK |
469 |
Low Reference |
| 64-68 |
- |
- |
Not Used |
| 69 |
0.5 TN |
2760 |
Low Reference |
| 70-72 |
- |
- |
Not Used |
| 73 |
2 BK/WH |
1551 |
Ground |
Connector Part Information
- Harness Type: Engine
- OEM Connector: 12582677
- Service Connector: 88988931
- Description: 73-Way F 0.64 2.8 Series, Sealed (BK)
|
Terminal Part Information
- Pins: 1-72
- 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
- Pins: 73
- Terminated Lead: SEALED: 13576392 UNSEALED: 13575797
- Release Tool: J-38125-11A
- Diagnostic Test Probe: J-35616-35 (VT)
- Terminal/Tray: 7116-4152-02/9
- Core/Insulation Crimp: 2/5
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