Engine Control Module (ECM) X1 (LDT) Connector End View
WARNING: This page is about a different car, the 2011 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
Engine Control Module (ECM) X1 (LDT)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | RD/WH | 440 | Battery Positive Voltage |
| 2 | - | - | Not Used |
| 3 | PK | 539 | Ignition 1 Voltage |
| 4-9 | - | - | Not Used |
| 10 | L-BU | 830 | Rough Road Sensor Signal |
| 11 | YE | 873 | Rough Road Sensor Return |
| 12 | WH | 1162 | APP Sensor 1 Signal |
| 13 | GY | 121 | Engine Speed Signal |
| 14-15 | - | - | Not Used |
| 16 | YE | 710 | Low Speed GMLAN Serial Data |
| 17 | - | - | Not Used |
| 18 | BN | 20 | Brake Switch Signal |
| 19-21 | - | - | Not Used |
| 22 | OG | 1733 | Ignition 1 Voltage |
| 23-24 | - | - | Not Used |
| 25 | PU | 203 | A/C Request Signal (C60/C68) |
| 26 | - | - | Not Used |
| 27 | D-BU | 1161 | APP Sensor 2 Signal |
| 28 | BN/BK | 1030 | Fuel Tank Pressure (FTP) Sensor Signal |
| 29 | - | - | Not Used |
| 30 | BN | 413 | Heated Oxygen Sensor (HO2S) 1 Hi Signal |
| 31 | - | - | Not Used |
| 32 | PU | 1807 | High Speed GMLAN Serial Data |
| 33-34 | - | - | Not Used |
| 35 | GY | 596 | 5-Volt Reference 2 |
| 36 | GY | 474 | 5-Volt Reference 1 |
| 37 | BN | 1937 | Low Reference |
| 38 | - | - | Not Used |
| 39 | YE | 645 | Low Reference |
| 40 | BN | 415 | Engine Coolant Temperature Sensor 2 Signal |
| 41 | L-BU | 817 | Vehicle Speed Signal |
| 42-44 | - | - | Not Used |
| 45 | L-BU | 834 | Low Reference |
| 46 | BN | 1671 | Oxygen Sensor 2 Heater Low Control |
| 47 | - | - | Not Used |
| 48 | BN | 419 | Malfunction Indicator Lamp Control |
| 49 | GY | 1936 | Fuel Level Sensor Signal |
| 50 | - | - | Not Used |
| 51 | PU/WH | 67 | A/C Compressor Clutch Coil Supply Voltage (C60/C68) |
| 52 | WH | 30 | Fuel Gauge Control |
| 53 | - | - | Not Used |
| 54 | D-GN/WH | 718 | Low Reference |
| 55 | WH | 1977 | Low Reference |
| 56-57 | - | - | Not Used |
| 58 | L-BU | 1031 | 5-Volt Reference 2 |
| 59 | BN | 1937 | Low Reference |
| 60 | YE | 1578 | EVAP Canister Purge Solenoid Control |
| 61 | - | - | Not Used |
| 62 | BN | 441 | MAIN Relay Control |
| 63-64 | - | - | Not Used |
| 65 | D-GN/WH | 762 | A/C Request Signal (C60/C68) |
| 66 | D-BU | 473 | Ignition Coil B Control |
| 67 | GY/D-GN | 355 | Oxygen Sensor 1 Heater Low Control |
| 68 | WH | 135 | Ground |
| 69-70 | - | - | Not Used |
| 71 | L-GN | 497 | Fuel Pump Relay Control |
| 72 | BK/WH | 2051 | Serial Data Signal |
| 73 | BK | 50 | Ground |
Connector Part Information
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Terminal Part Information
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