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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1799 (Lighting System) >> Diagnostic Information and Procedures >> Daytime Running Lamps (DRL) Inoperative

Daytime Running Lamps (DRL) Inoperative

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Daytime Running Lamps (DRL) Inoperative

Step Action Yes No
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Turn ON the ignition, with the engine OFF.
  2. Place the headlamp switch in the OFF position.
  3. Block the wheels.
  4. Ensure the parking brake is disengaged.
  5. Place the transaxle in neutral.
Do the daytime running lamps (DRL) illuminate?		 Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3
  1. Disconnect the DRL resistor.
  2. Connect a 15-amp fused jumper wire between the ground circuit of the DRL relay at the DRL resistor connector and a good ground.
Are the headlamps illuminated?		 Go to Step 4  Go to Step 5 
4 Connect a 15-amp fused jumper wire between the ground circuit of the DRL relay at the DRL resistor connector and the ground circuit at the DRL resistor connector.
Are the headlamps illuminated?		 Go to Step 7  Go to Step 8 
5 Test the ground circuit of the DRL relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 Go to Step 11  Go to Step 6 
6 Inspect for poor connections at the DRL relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 11  Go to Step 9 
7 Inspect for poor connections at the harness connector of the DRL resistor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 11  Go to Step 10 
8 Repair an open or high resistance in the ground circuit of the DRL resistor. Refer to Circuit Testing and Wiring Repairs .
Did you complete the repair?		 Go to Step 11  -
9 Replace the DRL relay. Refer to Relay Replacement (Attached to Wire Harness) or Relay Replacement (Within an Electrical Center) .
Did you complete the replacement?		 Go to Step 11  -
10 Replace the DRL resistor.
Did you complete the replacement?		 Go to Step 11  -
11 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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