For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Interior Lights Schematics
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems
2 | Do the reading lamps operate properly with the lamp switches? | Go to Step 7 | Go to Step 3
3 | Is only one reading lamp inoperative? | Go to Step 4 | Go to Step 5
4 |

1. Inspect the power, ground circuit, and switch for a poor connection or an open in the inoperative lamp circuit. Refer to Circuit Testing in Wiring Systems.
2. Repair the poor connection or open in the inoperative lamp circuit. Refer to Wiring Repairs in Wiring Systems.
3. If no fault is found, replace the inoperative lamp.

Did you complete the repair?

Go to Step 11

--

5 |

1. Disconnect the reading lamp switch connector.
2. Test for an open in the ground circuit at the reading lamp switch connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Is ground present?

Go to Step 6

Go to Step 8

6 | Test for a high resistance or an open in the inadvertent power control circuit between the reading lamp assembly and the BCM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Was a condition found and corrected? | Go to Step 11 | Go to Step 9
7 | Test for a high resistance or an open in the interior control circuit between the reading lamp assembly and the BCM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Was a condition found and corrected? | Go to Step 11 | Go to Step 10
8 | Repair the open in the ground circuit for the reading lamp switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 11 | --
9 | Replace the reading lamp assembly. Did you complete the repair? | Go to Step 11 | --
10 | Important: Perform the set up procedure for the body control module. Replace the body control module. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | 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