For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Interior Lamps Diagnostic System Check? | -- | Go to Step 2 | Go to Interior Lamps System Check
2 |

1. Disconnect the panel dimmer switch connector.
2. Turn the headlamp switch to the PARK position.
3. Measure the voltage between terminal C and terminal D of the dimmer switch connector.

Is the voltage equal to the specified value?

B+

Go to Step 3

Go to Step 4

3 |

1. Turn the headlamp switch to PARK.
2. Connect a fused jumper between terminal B of the panel dimmer switch connector and ground.

Do the interior lamps turn off?

--

Go to Step 6

Go to Step 5

4 | Repair an open in CKT 150. Refer to Wiring Repairs in Wiring Is the repair complete? | -- | Go to Interior Lamps System Check | --
5 | Replace the lamp dimmer module. Is the repair complete? | -- | Go to Interior Lamps System Check | --
6 | Replace the panel dimmer switch. Is the repair complete? | -- | Go to Interior Lamps System Check | --