Engine Control Module (ECM) X3 (LH2)
WARNING: This page is about a different car, the 2008 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
Engine Control Module (ECM) X3 (LH2)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1-2 | - | - | Not Used |
| 3 | 0.5 TN/WH | 3211 | HO2S Low Reference (Bank 2 Sensor 1) |
| 4 | 0.5 PU/WH | 3210 | HO2S Reference Voltage (Bank 2 Sensor 1) |
| 5 | 0.75 PU | 3220 | Reference Voltage (Bank 2 Sensor 2) |
| 6 | 0.75 TN | 3221 | Low Reference (Bank 2 Sensor 2) |
| 7 | 0.35 OG | 225 | Generator Turn On Signal |
| 8-14 | - | - | Not Used |
| 15 | 0.75 L-GN | 3212 | HO2S Heater Low Control - Bank 2 Sensor 1 |
| 16-20 | - | - | Not Used |
| 21 | 0.35 TN | 5514 | Low Reference |
| 22 | - | - | Not Used |
| 23 | 0.35 OG/BK | 469 | Low Reference |
| 24-28 | - | - | Not Used |
| 29 | 0.35 GY | 23 | Generator Field Duty Cycle Signal |
| 30-32 | - | - | Not Used |
| 33 | 0.35 TN | 2501 | High Speed GMLAN Serial Data Bus- |
| 34 | - | - | Not Used |
| 35 | 0.35 TN | 2761 | Low Reference |
| 36 | - | - | Not Used |
| 37 | 0.35 GY | 2700 | 5-Volt Reference |
| 38 | - | - | Not Used |
| 39 | 0.35 GY | 2704 | 5-Volt Reference |
| 40-45 | - | - | Not Used |
| 46 | 0.35 OG/BK | 1786 | Park/Neutral Signal |
| 47 | - | - | Not Used |
| 48 | 0.5 D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
| 49 | 0.35 D-GN | 335 | Low Speed Cooling Fan Relay Control |
| 50 | 0.75 OG/WH | 3223 | HO2S Heater Low Control (Bank 2 Sensor 2) |
| 51-52 | - | - | Not Used |
| 53 | 0.35 TN/BK | 2500 | High Speed GMLAN Serial Data Bus+ |
| 54 | - | - | Not Used |
| 55 | 0.35 YE | 410 | ECT Sensor Signal |
| 56 | - | - | Not Used |
| 57 | 0.35 OG/BK | 380 | A/C Refrigerant Pressure Sensor Signal |
| 58 | - | - | Not Used |
| 59 | 0.35 L-GN | 432 | MAP Sensor Signal |
| 60-72 | - | - | Not Used |
| 73 | 3.0 BK | 1550 | Ground |
Connector Part Information
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Terminal Part Information
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