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HOMESERVICE MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 156 (LIGHTING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESAUTOMATIC LAMP CONTROL INOPERATIVE
2006 Pontiac G6 GTP, 2D Coupe, Standard

Automatic Lamp Control Inoperative

2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Automatic Lamp Control Inoperative
WARNING: This page is about a different car, the 2005 Pontiac G6. However, it is still accessible from the selected car via links, so may be relevant.
Automatic Lamp Control Inoperative

Step Action Yes No
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics 
DEFINITION: Automatic headlamps are inoperative.
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. Cover the ambient light sensor.
  2. Place the headlamp switch in the AUTO position.
  3. Turn ON the ignition, with the engine OFF.
  4. Wait 20 seconds.
Do the headlamps illuminate?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
  1. Disconnect the ambient light sensor.
  2. With a scan tool, observe the Day/Night Status parameter.
Does the scan tool indicate Night?		 Go to Step 4  Go to Step 5 
4 Inspect for poor connections at the harness connector of the ambient light sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 8  Go to Step 6 
5 Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 8  Go to Step 7 
6 Replace the ambient light sensor. Refer to Ambient Light Sensor Replacement .
Did you complete the replacement?		 Go to Step 8  -
7 Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 8  -
8 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
RENDER: 1.0x

NO RELATED

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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.