Step | Action | Yes | No | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Exterior Lights 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 tail, marker and license lamps are always on. Do the tail, marker and license lamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | ||||||||
3 | Remove the park lamp relay. Do the park lamps turn OFF? | Go to Step 4 | Go to Step 9 | ||||||||
4 |
Was a ground signal present? | Go to Step 5 | Go to Step 10 | ||||||||
5 | Use the scan tool to check the body control module (BCM) park lamp switch input data. Does the scan tool indicate a park lamps OFF request signal? | Go to Step 8 | Go to Step 6 | ||||||||
6 | Test for a short to ground in the park lamp switch signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 7 | ||||||||
7 | 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 13 | Go to Step 11 | ||||||||
8 | Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 12 | ||||||||
9 | Repair the short to voltage in one of the following circuits. Refer to Wiring Repairs :
Did you complete the repair? | Go to Step 13 | -- | ||||||||
10 | Replace the park lamp relay. Refer to Relay Replacement . Did you complete the repair? | Go to Step 13 | -- | ||||||||
11 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the repair? | Go to Step 13 | -- | ||||||||
12 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. 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 3 | ||||||||
