Body Control Module (BCM) C1

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Body Control Module (BCM) C1
WARNING: This page is about a different car, the 2007 Isuzu Ascender, 2007 GMC Envoy, 2007 Chevrolet TrailBlazer, and 2007 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Body Control Module (BCM) C1 Connector End View
GM73156Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) C1 Connector Parts Information

Connector Part Information 
  • OEM: 12110088
  • Service: 15306210
  • Description: 24-Way F Micro-Pack 100 Series (GY)
Terminal Part Information 
  • Pins: A2-A6, A12, B1-B12
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
Body Control Module (BCM) C1 Connector Terminal Identification

Pin Wire Color Circuit No. Function
A1 - - Not Used
A2 WH 2282 Headlamp Washer Relay Control (CE4)
A3 OG 1140 Battery Positive Voltage
A4 BK/WH 1969 Headlamp High Beam Relay Control
A5 PK/WH 1970 Headlamp Low Beam Relay Control
A6 PK 5363 Inclination Sensor Low Reference (BAE)
A7-A11 - - Not Used
A12 WH 278 Ambient Light Sensor Signal
B1 L-GN 1037 Class 2 Serial Data
B2 BK 279 Ambient Light Sensor Low Reference
B3 L-GN 2270 Rear Window Washer Relay Control
B4 GY/BK 2226 Instrument Panel Lamps Dimmer Switch Low Reference
B5 GY 705 5-Volt Reference
B6 WH 2283 12-Volt Reference
B7 OG/BK 2090 Courtesy Lamps Supply Voltage
B8 L-GN 1011 Remote Radio Control Signal (STW)
B9 GY 391 Rear Window Wiper Switch Signal
B10 YE 1836 Security System Sensor Signal (w/o BAE)
B11 GY 2521 Right Sunload Sensor Signal (CJ2)
B12 L-BU/BK 2519 Left Sunload Sensor Signal (CJ2)
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.