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 |

1. Place the headlamp switch in the ON position.
2. Use a test lamp in order to backprobe the underhood junction block between terminal B7 of connector C3 and ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2 | Use the test lamp in order to backprobe the turn/headlamp switch assembly between terminal 33 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 Relay/Fuse Center Replacement in Wiring Systems. 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-Tilt. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --
5 | Repair the open in CKT 1200 between the underhood junction block and the turn/headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Daytime Running Lights (DRL) System Check | --