Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Lighting Systems Connector End Views or Data Communication Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Verify that the daytime running lamps (DRL) defeat feature of the headlamp switch operates properly. Do the DRL headlamps turn OFF when the defeat mode is applied? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 |
Do the DRL turn OFF or ON? | Go to Step 6 | Go to Step 4 |
4 | Test for an open, high resistance, short to ground, or short to voltage in the DRL defeat switch signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct a condition? | Go to Step 9 | Go to Step 5 |
5 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
6 | Inspect for poor connections at the harness connector of the headlamp switch. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
7 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | -- |
8 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 9 | -- |
9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
