For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Interior Lights Schematics
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 | Inspect the rear compartment courtesy lamp bulb. Is the bulb filament open? | Go to Step 9 | Go to Step 3
3 | Use a test lamp connected to a good ground in order to test for battery positive voltage at the rear compartment courtesy lamp connector. Does the test lamp illuminate? | Go to Step 4 | Go to Step 8
4 | Test for a high resistance or an open in the rear compartment courtesy lamp switched circuit. Refer to Circuit Testing and Wiring Repairs . Is the rear compartment courtesy lamp switch control circuit open? | Go to Step 6 | Go to Step 5
5 |

1. Disconnect the rear compartment courtesy lamp switch.
2. Connect a fused jumper wire across the rear compartment lamp switch connector bypassing the switch contacts.
3. Reinstall the rear compartment lamp if removed.

Does the rear compartment lamp illuminate?

Go to Step 10

Go to Step 7

6 | Repair the open in the rear compartment lamp switch control circuit. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 11 | --
7 | Repair the open in the rear compartment lamp switch ground circuit. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 11 | --
8 | Repair the open in the rear compartment lamp battery positive voltage circuit. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 11 | --
9 | Replace the rear compartment courtesy lamp bulb. Did you complete the repair? | Go to Step 11 | --
10 | Replace the rear compartment courtesy lamp switch. Did you complete the repair? | Go to Step 11 | --
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3