Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Interior Lights Schematics Connector End View Reference: Master Electrical Component List | |||
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | |
2 | Open each of the doors. Do all of the courtesy lamps illuminate when you open each door? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are the courtesy lamps inoperative from one door only? | Go to Diagnostic Starting Point - Doors in Doors | Go to Step 4 |
4 | Are all of the courtesy lamps inoperative? | Go to Step 5 | Go to Step 8 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 7 |
6 | Install a jumper between the battery positive voltage supply circuit of the CTSY LP relay and the switched CTSY lamp supply circuit. Do the courtesy lamps illuminate? | Go to Step 10 | Go to Step 11 |
7 | Test for a high resistance, an open, or a short to battery positive in the CTSY LP relay control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 9 |
8 | Repair the open, high resistance, or short to ground in the inoperative courtesy lamp power supply or ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | -- |
9 |
Important: Perform the set-up procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System. Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 12 | -- |
10 | Replace the CTSY LP relay 42. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 12 | -- |
11 | Replace the instrument panel fuse block. Refer to Instrument Panel Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
