Did you perform the Lighting Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

1. Connect the scan tool to the data link connector (DLC).
2. Command the automatic lamp control to ON.

Do the park lamps light?

--

Go to Step 3

Go to Step 4

Replace the ambient light sensor.

Is the repair complete?

--

System OK

--

1. Exchange the park lamp relay with a known good relay from the underhood wiring harness junction block.
2. Command the automatic lamp control to ON.

Do the park lamps light?

--

Go to Step 5

Go to Step 6

Replace the faulty relay.

Is the repair complete?

--

System OK

--

Replace the underhood wiring harness junction block. Refer to Underhood Fuse Block Replacement in Engine Electrical.

Is the repair complete?

--

System OK

--