For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.
1 | Inspect the body control module (BCM) for stored DTCs. Refer to Diagnostic Trouble Code (DTC) List/Type in Body Control Systems. Does the BCM have any stored DTCs? | -- | Go to Step 2 | Go to Step 3
2 | Correct any code setting conditions that exist. Refer to Diagnostic Trouble Code (DTC) List/Type in Body Control System. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
3 | Exchange the park lamp relay with a known good relay from the underhood junction block. Do the park lamps turn off? | -- | Go to Step 4 | Go to Step 5
4 | Replace the faulty relay. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
5 | Disconnect the turn/headlamp switch assembly connector C1. Do the park lamps turn off? | -- | Go to Step 6 | Go to Step 7
6 | Replace the turn/headlamp switch assembly. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column-Standard. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
7 | Disconnect the underhood junction block connector C2. Do the front park lamps turn off? | -- | Go to Step 8 | Go to Step 9
8 | Disconnect the underhood junction block connector C3. Do the rear park lamps turn off? | -- | Go to Step 10 | Go to Step 11
9 | Repair the short to B+ in CKT 9 between the underhood junction block and the lit lamp. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
10 | Replace the underhood junction block. Refer to Underhood Fuse Block Replacement in Engine Electrical. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
11 | Disconnect the right IP junction block connector C3. Do all of the rear lamps turn off? | -- | Go to Step 13 | Go to Step 12
12 | Repair the short to B+ in CKT 9 between the right IP junction block and the lit lamp. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
13 | Replace the right IP junction block. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --