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 | Backprobe the underhood junction block using a test lamp between terminal B12 of connector C3 and ground. Does the test lamp light? | -- | Go to Step 2 | Go to Step 3
2 | Backprobe the turn/headlamp switch assembly using a test lamp between terminal 34 of the turn/headlamp switch assembly connector C1 and ground. Does the test lamp light? | -- | Go to Step 4 | Go to Step 5
3 | 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 | --
4 | 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 | --
5 | Repair the open in CKT 1201 between the underhood junction block and the turn/headlamp switcvh assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --