For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Inspect the PARK LP fuse. Is the fuse open? | -- | Go to Step 2 | Go to Step 3
2 | Repair a short to ground in CKT 1340. Is the repair complete? | -- | Go to Exterior Lights System Check | --
3 |

1. Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
2. Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal R and ground.

Did the test lamp light?

--

Go to Step 7

Go to Step 4

4 | Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal O and ground. Did the test lamp light? | -- | Go to Step 5 | Go to Step 6
5 | Replace the headlamp/IP lamp dimmer switch. Refer to Headlamp Switch Replacement . Is the repair complete? | -- | Go to Exterior Lights System Check | --
6 | Repair the following conditions in CKT 1340 between the PARK LP fuse and the headlamp and the IP lamp dimmer switch harness connector terminal O:

• | A faulty connection

• | An open circuit

Is the repair complete?

--

Go to Exterior Lights System Check

--

7 | Repair the following conditions in CKT 9 between the headlamp and the IP lamp dimmer switch harness connector terminal R and S405:

• | A faulty connection

• | An open circuit

Is the repair complete?

--

Go to Exterior Lights System Check

--