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 MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 165 (ENGINE CONTROLS - 2.2L (L61) INTRODUCTION)COMPONENT LOCATORENGINE CONTROL MODULE (ECM) CONNECTOR END VIEWS
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Engine Control Module (ECM) Connector End Views
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Engine Control Module (ECM) Connector End Views
WARNING: This page is about a different car, the 2005 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Engine Control Module (ECM) C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | PU | 420 | Cruise/Brake Switch Signal |
| 2 | RD/BK | 380 | A/C Refrigerant Pressure Sensor Signal |
| 3 | BK | 2751 | Low Reference |
| 4-9 | - | - | Not Used |
| 10 | TN | 2501 | CAN Low |
| 11 | TN/WH | 2500 | CAN High |
| 12 | - | - | Not Used |
| 13 | D-GN | 335 | High Speed Cooling Fan Relay Control |
| 14 | - | - | Not Used |
| 15 | TN/BK | 231 | Engine Oil Pressure Switch Signal |
| 16-17 | - | - | Not Used |
| 18 | PU/WH | 821 | VSS Signal (M/T) |
| 19 | PK | 639 | Ignition 1 Voltage |
| 20 | OG | 1440 | Battery Positive Voltage |
| 21 | PU | 1272 | 5-Volt Reference - A |
| 22 | GY | 2700 | 5-Volt Reference - A |
| 23 | L-BU | 20 | Stop Lamp Switch Signal |
| 24-28 | - | - | Not Used |
| 29 | D-GN/WH | 465 | Fuel Pump Relay Control |
| 30 | BN | 5069 | Main Relay Control |
| 31 | WH/BK | 1164 | 5-Volt Reference - B |
| 32-48 | - | - | Not Used |
| 49 | D-BU | 1161 | APP Sensor 1 Signal |
| 50 | GY | 397 | Cruise On/Off Switch Signal (K34) |
| 51 | D-BU | 84 | Cruise Set/Coast Switch Signal (K34) |
| 52 | - | - | Not Used |
| 53 | BN | 1271 | Low Reference |
| 54 | GY/BK | 87 | Cruise Resume/Accel Switch Signal (K34) |
| 55 | - | - | Not Used |
| 56 | D-GN | 459 | Low Reference |
| 57 | D-BU | 473 | Low Speed Cooling Fan Relay Control |
| 58 | - | - | Not Used |
| 59 | BN/WH | 2960 | Keyword Serial Data |
| 60 | - | - | Not Used |
| 61 | L-BU | 1162 | APP Sensor 2 Signal |
| 62-63 | - | - | Not Used |
| 64 | TN | 1274 | Low Reference |
Engine Control Module (ECM) C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | YE | 573 | CKP Sensor Signal |
| 2 | PU | 574 | Low Reference |
| 3 | L-BU/BK | 844 | Fuel Injector 4 Control |
| 4-6 | - | - | Not Used |
| 7 | BK | 1744 | Fuel Injector 1 Control |
| 8 | - | - | Not Used |
| 9 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
| 10 | PK/BK | 1746 | Fuel Injector 3 Control |
| 11 | - | - | Not Used |
| 12 | OG/BK | 469 | Low Reference |
| 13 | BN | 582 | TAC Motor Control 2 |
| 14 | BN | 582 | TAC Motor Control 2 |
| 15 | YE | 581 | TAC Motor Control 1 |
| 16 | YE | 581 | TAC Motor Control 1 |
| 17 | - | - | Not Used |
| 18 | D-BU | 496 | Knock Sensor Signal |
| 19 | TN | 472 | IAT Sensor Signal |
| 20 | - | - | Not Used |
| 21 | D-GN | 676 | HO2S Heater Low Control - Sensor 1 |
| 22 | GY | 1716 | Low Reference |
| 23-25 | - | - | Not Used |
| 26 | PU | 486 | TP Sensor 2 Signal |
| 27 | WH | 423 | IC Timing Control 1-4 |
| 28-30 | - | - | Not Used |
| 31 | RD | 225 | Generator Turn On Signal |
| 32 | - | - | Not Used |
| 33 | RD | 1792 | Drain Wire |
| 34 | L-GN/BK | 1745 | Fuel Injector 2 Control |
| 35 | L-GN | 432 | MAP Sensor Signal |
| 36 | BK/WH | 1704 | Low Reference |
| 37 | - | - | Not Used |
| 38 | BK | 2761 | Low Reference |
| 39 | BK | 2760 | Low Reference |
| 40 | - | - | Not Used |
| 41 | YE | 410 | ECT Sensor Signal |
| 42 | PU | 1589 | Fuel Level Sensor Signal |
| 43 | BK | 2752 | Low Reference |
| 44 | BK/WH | 1423 | HO2S Heater Low Control - Sensor 2 |
| 45 | GY | 2701 | 5-Volt Reference - A |
| 46 | - | - | Not Used |
| 47 | WH | 1310 | EVAP Canister Vent Solenoid Control |
| 48 | - | - | Not Used |
| 49 | PU | 1666 | HO2S High Signal - Sensor 1 |
| 50 | TN | 1667 | HO2S Low Signal - Sensor 1 |
| 51 | PU/WH | 1668 | HO2S High Signal - Sensor 2 |
| 52 | TN/WH | 1669 | HO2S Low Signal - Sensor 2 |
| 53 | - | - | Not Used |
| 54 | BN/WH | 633 | CMP Sensor Signal |
| 55 | D-GN | 485 | TP Sensor 1 Signal |
| 56 | OG | 406 | IC Timing Control 2-3 |
| 57 | L-BU/BK | 1688 | 5-Volt Reference - B |
| 58 | GY | 2704 | 5-Volt Reference - B |
| 59 | D-GN | 890 | FTP Sensor Signal |
| 60 | BK | 2759 | Low Reference |
| 61 | GY | 2709 | 5-Volt Reference - A |
| 62 | - | - | Not Used |
| 63 | WH | 5290 | Ignition 1 Voltage |
| 64 | WH | 5290 | Ignition 1 Voltage |
RENDER: 1.0x
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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.