Step | Action | Yes | No | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Body Control System Connector End Views in Body Control System | |||||||||||||
1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | |||||||||||
2 | Verify that the park, license and tail lamps are always ON. Do the park, license and tail lamps operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | 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 |
Is a ground signal present? | Go to Step 5 | Go to Step 10 | ||||||||||
5 | Use the scan tool to view the body control module (BCM) parklamp switch input data. Does the scan tool display INACTIVE? | Go to Step 8 | Go to Step 6 | ||||||||||
6 | Test for a short to ground in the park lamp switch on signal circuit. Refer to Circuit Testing Wiring Repairs in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems:
Did you complete the repair? | Go to Step 13 | -- | ||||||||||
10 | Replace the park lamp relay. Refer to Relay Replacement in Wiring Systems. 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 |
Important: Perform the setup procedure for the BCM. Replace the BCM. Refer to Body Control Module Replacement 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 3 | ||||||||||
