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 DIAGNOSIS (SINGLE PAGE)ELECTRICALBODY ELECTRICALOEM CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) CONNECTOR END VIEWS (2.4L)ENGINE CONTROL MODULE (ECM) CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) C2
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Engine Control Module (ECM) C2
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Engine Control Module (ECM) C2
Engine Control Module (ECM) C2 Connector & Terminal Parts Information
Connector Part InformationÂ
|
Terminal Part InformationÂ
|
Engine Control Module (ECM) C2 Terminal Identification
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | PU | 2121 | IC 1 Control |
| 2 | TN/WH | 3111 | HO2S Low Reference Bank 1 Sensor 1 |
| 3 | PU/WH | 3110 | HO2S Reference Voltage Bank 1 Sensor 1 |
| 4 | PU/WH | 1668 | HO2S High Signal-Bank 1 Sensor 1 |
| 5 | TN/WH | 1669 | HO2S Low Signal-Bank 1 Sensor 2 |
| 6-7 | - | - | Not Used |
| 8 | D-BU | 496 | Knock Sensor Signal |
| 9 | GY | 1716 | Low Reference |
| 10 | - | - | Not Used |
| 11 | YE | 581 | TAC Motor Control (1) |
| 12 | BN | 582 | TAC Motor Control (2) |
| 13 | PK/BK | 5293 | Ignition 1 Voltage |
| 14 | PK/BK | 6395 | CMP Actuator Solenoid Control Intake |
| 15-16 | - | - | Not Used |
| 17 | L-BU | 2123 | IC 3 Control |
| 18 | YE | 400 | VSS High Signal (w/M86) |
| 19 | PU | 401 | VSS Low Signal (w/M86) |
| 20 | GY | 5296 | Low Reference |
| 21-22 | - | - | Not Used |
| 23 | TN | 5301 | Low Reference |
| 24-26 | - | - | Not Used |
| 27 | PU | 574 | Low Reference |
| 28 | - | - | Not Used |
| 29 | TN | 2752 | Low Reference |
| 30 | L-GN | 5282 | Low Reference |
| 31 | - | - | Not Used |
| 32 | L-GN/BK | 1745 | Fuel Injector (2) Control |
| 33 | D-GN/WH | 2124 | IC 4 Control |
| 34 | - | - | Not Used |
| 35 | BN | 2129 | Low Reference |
| 36 | YE/BK | 5297 | 5-Volt Reference - 1 |
| 37-38 | - | - | Not Used |
| 39 | D-BU | 5300 | 5-Volt Reference - 1 |
| 40-41 | - | - | Not Used |
| 42 | TN | 2760 | Low Reference |
| 43 | L-GN | 2867 | 5-Volt Reference - 2 |
| 44 | GY | 2701 | 5-Volt Reference - 2 |
| 45 | - | - | Not Used |
| 46 | PU | 5284 | Low Reference |
| 47 | - | - | Not Used |
| 48 | PK/BK | 1746 | Fuel Injector (3) Control |
| 49 | - | - | Not Used |
| 50 | WH/BK | 6396 | CMP Actuator Solenoid Control Exhaust |
| 51-52 | - | - | Not Used |
| 53 | OG/WH | 2122 | IC 2 Control |
| 54-55 | - | - | Not Used |
| 56 | D-GN | 5273 | CMP Sensor Signal |
| 57-58 | - | - | Not Used |
| 59 | OG | 5275 | CMP Sensor Signal |
| 60-61 | - | - | Not Used |
| 62 | TN | 472 | IAT Sensor Signal |
| 63 | YE | 573 | CKP Sensor Signal |
| 64 | D-GN | 485 | TP Sensor 1 Signal |
| 65 | - | - | Not Used |
| 66 | PU | 486 | TP Sensor 2 Signal |
| 67 | YE | 492 | MAF Sensor Signal |
| 68 | BK/WH | 3113 | HO2S Heater Low Control-Bank 1 Sensor 1 |
| 69 | BK/WH | 3122 | HO2S Heater Low Control-Bank 2 Sensor 1 |
| 70 | - | - | Not Used |
| 71 | L-BU/BK | 844 | Fuel Injector (4) Control |
| 72 | TN | 1744 | Fuel Injector (1) Control |
| 73 | BK/WH | 451 | Ground |
RENDER: 1.0x
NO RELATED
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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.