Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC2007WAVE LT, 4D HATCHBACK, STANDARD, Y4M/MLMREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALBODY ELECTRICALOEM CONNECTOR END VIEWSENGINE CONTROL MODULE CONNECTOR END VIEWS (NOTCHBACK)ENGINE CONTROL MODULE (ECM) CONNECTOR END VIEW/PART INFORMATION/TERMINAL IDENTIFICATION K (MR140)
2007 Pontiac Wave LT, 4D Hatchback, Standard, Y4M/MLM
Engine Control Module (ECM) Connector End View/Part Information/Terminal Identification K (MR140)
2007 Pontiac Wave LT, 4D Hatchback, Standard, Y4M/MLMSECTION Engine Control Module (ECM) Connector End View/Part Information/Terminal Identification K (MR140)
Engine Control Module (ECM) Connector End View/Part Information/Terminal Identification K (MR140)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | RD/WH | - | Battery Positive Voltage |
| 2-4 | - | - | Not Used |
| 5 | GY | - | Octane Selector Switch Signal |
| 6 | D-GN/WH | - | Vehicle Speed Signal |
| 7 | BN | - | Rough Road Signal w/ABS |
| 8-11 | - | - | Not Used |
| 12 | GY | - | High Speed Cooling Fan Relay Control |
| 13 | YE | - | Intake Manifold Tuning Valve Control |
| 14 | PU | - | CAN Serial Data High |
| 15 | YE | - | CAN Serial Data Low |
| 16 | BK | - | Heated Oxygen Sensor 1 Heater Control |
| 17 | RD/WH | - | Battery Positive Voltage |
| 18 | PK | - | Ignition 1 Voltage |
| 19-20 | - | - | Not Used |
| 21 | D-GN | - | Rough Road Signal w/o ABS |
| 22 | L-BU | - | Air Conditioning Refrigerant Pressure Switch Signal |
| 23 | - | - | Not Used |
| 24 | GN | - | Engine Coolant Temperature Gage Control |
| 25 | WH | - | Engine Speed Signal |
| 26-27 | - | - | Not Used |
| 28 | GN | - | Low Speed Cooling Fan Relay Control |
| 29 | PU/WH | - | Air Conditioning Compressor Clutch Relay Control |
| 30 | PU | - | Fuel Gage Control |
| 31 | - | - | Not Used |
| 32 | BK/WH | - | Serial Data |
| 33 | - | - | Not Used |
| 34 | L-BU | - | Low Reference |
| 35 | D-GN/WH | - | Air Conditioning Request Signal |
| 36 | BN | - | Heated Oxygen Sensor 2 Signal |
| 37-49 | - | - | Not Used |
| 50 | OG/BK | - | 5-Volt Reference |
| 51 | GY | - | Fuel Level Sensor Signal |
| 52 | - | - | Not Used |
| 53 | PU | - | Heated Oxygen Sensor 2 Low Reference |
| 54 | L-GN | - | Fuel Pump Relay Control |
| 55-63 | - | - | Not Used |
| 64 | BN/WH | - | Malfunction Indicator Lamp Control |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.