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Fog Lamps Always On

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Fog Lamps Always On

Step Action Yes No
Schematic Reference: Fog Lights Schematics 
Connector End View Reference: Master Electrical Component List in Wiring Systems
1 Did you perform the Lighting System Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Lighting Systems 
2
  1. Turn ON the ignition, with the engine OFF.
  2. Place the fog lamp switch in the OFF position.
  3. Place the headlamp switch in the OFF position.
Do the fog lamps remain illuminated?		 Go to Step 3  Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
3 Disconnect the fog lamp relay.
Did the fog lamps turn off?		 Go to Step 4  Go to Step 8 
4
  1. Reinstall the fog lamp relay.
  2. Disconnect the multifunction switch.
Do the fog lamps remain illuminated?		 Go to Step 5  Go to Step 10 
5 Disconnect the BCM connector C3.
Do the fog lamps remain illuminated?		 Go to Step 6  Go to Step 9 
6 Disconnect the BCM connector C1.
Do the fog lamps remain illuminated?		 Go to Step 7  Go to Step 12 
7 Test for a short to ground in the fog lamp relay control circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 13  Go to Step 11 
8 Repair a short to battery positive voltage in the fog lamp voltage supply circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 13  -
9 Repair a short to ground in the fog lamp switch signal circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 13  -
10 Replace the multifunction turn signal switch. Refer to Multifunction, Turn Signal Switch Replacement in Steering Wheel and Column.
Did you complete the repair?		 Go to Step 13  -
11 Replace the fog lamp relay. Refer to Relay Replacement (Within an Electrical Center) or Relay Replacement (Attached to Wire Harness) in Wiring Systems.
Did you complete the replacement?		 Go to Step 13  -
12
  1. Replace the BCM. Refer to Body Control Module Replacement in Body Control System.
  2. Perform the setup procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.
Did you complete the replacement?		 Go to Step 13  -
13 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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