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 MANUALSSATURN2009ASTRA XR, 4D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - ELECTRICAL CENTER VIEWS & COMPONENT AND HARNESS CONNECTOR END VIEWSCOMPONENT CONNECTOR END VIEWSHVAC CONTROL MODULE, X1
2009 Saturn Astra XR, 4D Hatchback, Automatic
HVAC Control Module, X1
2009 Saturn Astra XR, 4D Hatchback, AutomaticSECTION HVAC Control Module, X1
HVAC Control Module, X1
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | WH | - | Air Temperature Door Control A |
| 2 | PU | - | Mode Door Control A |
| 3 | - | - | Not Used |
| 4 | BN | - | Recirculation Door Control A |
| 5 | OG | 1542 | Battery Positive Voltage |
| 6 | YE/GN | 839 | Run/Crank Ignition 1 Voltage |
| 7 | BK | - | Low Reference |
| 8 | GY | - | Air Temperature Actuator Sensor Signal |
| 9 | YE | - | Mode Actuator Sensor Signal |
| 10 | - | - | Not Used |
| 11 | BK/WH | 66 | A/C Request Signal |
| 12 | BN/WH | 193 | Rear Defog Relay Control |
| 13 | BU | 292 | Rear Defog Switch Signal |
| 14-16 | - | - | Not Used |
| 17 | RD | - | Air Temperature Door Control B |
| 18 | BU/RD | - | Mode Door Control B |
| 19 | - | - | Not Used |
| 20 | OG/YE | - | Recirculation Door Control B |
| 21 | GN | 1382 | LED Dimming Signal |
| 22 | BN/BK | - | 8-Volt Reference |
| 23 | YE/BK | 1650 | Ground |
| 24-32 | - | - | Not Used |
Connector Part Information
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Terminal Part Information
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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.