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 MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALBODY ELECTRICALOEM CONNECTOR END VIEWSCOMPUTER/INTEGRATING SYSTEMS CONNECTOR END VIEWSBODY CONTROL MODULE CONNECTOR END VIEWBODY CONTROL MODULE (BCM) C1
2006 Buick Terraza CXL, 3.5 L, AWD
Body Control Module (BCM) C1
2006 Buick Terraza CXL, 3.5 L, AWDSECTION Body Control Module (BCM) C1
Computer/Integrating Systems Connector End Views
Connector Part InformationÂ
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Terminal Part InformationÂ
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Body Control Module (BCM) C1
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | TN | 860 | Front Windshield Wiper Switch High Signal |
| 2 | WH | 1459 | Security System Sensor Supply Voltage |
| 3 | PK | 1439 | Ignition 1 Voltage |
| 4 | TN | 28 | Horn Relay Control |
| 5 | OG | 300 | Run Relay Control |
| 6 | TN | 707 | RAP Relay Coil Control |
| 7 | TN/WH | 1969 | Headlamp High Beam Relay Control |
| 8 | - | - | Not Used |
| 9 | PK/WH | 1970 | Headlamp Low Beam Relay Control |
| 10 | WH | 1080 | Park Lamp Relay Control |
| 11 | YE | 749 | Security Indicator Control |
| 12 | GY | 91 | Windshield Wiper Switch Signal 2 |
| 13 | YE | 196 | Windshield Wiper Motor Park Switch Signal |
| 14 | TN | 1835 | Low Reference |
| 15 | L-GN/BK | 1137 | DRL Ambient Light Sensor Signal |
| 16 | YE | 5066 | Brake Pedal Position Sensor Signal |
| 17 | BK/WH | 1651 | Ground |
| 18 | - | - | Not Used |
| 19 | BK/WH | 151 | Ground |
| 20 | BK/WH | 1651 | Ground |
| 21 | YE | 5 | Crank Voltage |
| 22 | PK | 1239 | Ignition 1 Voltage |
| 23 | BN | 1141 | Ignition 3 Voltage |
| 24 | - | - | Not Used |
| 25 | WH/BK | 644 | 12-Volt Reference |
| 26 | PK/BK | 109 | Hood Ajar Switch Signal |
| 27 | OG | 5688 | 10-Volt Reference |
| 28 | GY/BK | 5689 | Low Reference |
| 29 | BN/WH | 230 | Low Reference |
| 30 | PK | 1444 | I/P Dimming Control |
| 31 | OG/WH | 812 | I/P Dimming Voltage |
| 32 | - | - | Not Used |
| 33 | BN | 5077 | Low Reference |
| 34 | BN/WH | 1571 | Traction Control Switch Signal |
| 35 | GY/BK | 1598 | Courtesy Lamps Switch Off Signal |
| 36 | PK/BK | 1597 | Courtesy Lamps Switch On Signal |
| 37 | TN/WH | 1455 | Keyless Entry Signal |
| 38 | L-GN | 1037 | Class 2 Serial Data |
| 39 | L-GN | 526 | Stop Lamp Supply Voltage |
| 40 | L-GN | 80 | Key In Ignition Switch Signal |
| 41 | L-BU/WH | 1314 | Left Front Turn Signal Lamp Supply Voltage |
| 42 | D-BU/WH | 1315 | Right Front Turn Signal Lamp Supply Voltage |
| 43 | GY/BK | 690 | Courtesy Lamp High Control |
| 44 | OG | 1732 | Inadvertent Power Courtesy Lamp |
| 45 | - | - | Not Used |
| 46 | RD/WH | 340 | Battery Positive Voltage |
| 47 | OG | 228 | Windshield Washer Pump Control |
| 48 | GY | 8 | Instrument Panel Lamp Supply Voltage |
| 49 | D-GN/WH | 1135 | A/T Shift Lock Control Solenoid Control (w/o AQW) |
| GN/WH | 1135 | A/T Shift Lock Control Solenoid Control (AQW) | |
| 50 | RD/WH | 240 | Battery Positive Voltage |
| 51 | RD/WH | 2440 | Battery Positive Voltage |
| 52 | RD/WH | 1240 | Battery Positive Voltage |
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.