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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting Systems (Symptoms) >> Daytime Running Lamps (DRL) Inoperative (Domestic/Canadian)

Daytime Running Lamps (DRL) Inoperative (Domestic/Canadian)

Daytime Running Lamps (DRL) Inoperative (Domestic/Canadian)

Step Action Yes No
Schematic Reference: Exterior Lights Schematics
Connector End View Reference: Lighting Systems Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2 Do the turn signals operate properly? Go to Step 3  Go to Turn Signal Lamps and/or Indicators Inoperative 
3
  1. Verify that the park brake is not APPLIED.
  2. Install a scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Parking Brake Switch parameter in the instrument panel module (IPM) inputs list.
Does the scan tool display RELEASED?
Go to Step 4  Go to Symptoms - Hydraulic Brakes
4
  1. Verify that the automatic wiper system is OFF.
  2. Install a scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Lights On With Wipers parameter in the instrument panel module (IPM) inputs list.
Does the scan tool display OFF?
Go to Step 5  Go to Symptoms - Wiper/Washer Systems
5 Inspect for poor connections at the harness connector of the IPM. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 7  Go to Step 6 
6 Replace the IPM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 7  -
7 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 2