For 1990-2009 cars

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

1. Disconnect the interior lamp switch connector.
2. Connect a fused jumper between the interior lamp switch connector cavity 7 (DK BLU) and ground.

Do the courtesy lamps light?

--

Go to Step 3

Go to Step 4

3 | Test CKT 150 (BLK) for an open. Refer to Testing for Continuity in Wiring Systems. Is CKT 150 OK? | -- | Go to Step 5 | Go to Step 7
4 | Test CKT 1393 (DK BLU) for an open or short to ground. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is CKT 1393 OK? | -- | Go to Step 6 | Go to Step 7
5 | Replace the interior lamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Interior Lamps System Check | --
6 | Replace the body control module (MALL). Refer to Body Control Module Replacement in Body Control System. Is the repair complete? | -- | Go to Interior Lamps System Check | --
7 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Interior Lamps System Check | --