1. Turn the headlamp switch to the PARK position.
2. Turn the instrument panel (instrument panel) lamp dimmer switch to the OFF position.
3. Using a test light, backprobe between the instrument panel lamp dimmer switch harness connector terminal G to ground.

Does the test light illuminate?

--

Go to Step 3

Go to Step 2

Replace the headlamp switch. Refer to Headlamp Switch Replacement .

Has the repair been made?

--

Go to Interior Lights Dimming System Check

--

Repair the poor connection or an open in circuit 230 between the headlamp switch harness connector terminal G and S222.

Has the repair been made?

--

Go to Interior Lights Dimming System Check

--