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 | 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 supply, ground circuit, and switch for a poor connection or an open in the inoperative lamp circuit. Refer to Circuit Testing .
2. Repair the poor connection or open in the inoperative lamp circuit. Refer to Wiring Repairs .
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 a high resistance or an open in the ground circuit at the reading lamp switch connector. Refer to Circuit Testing and Wiring Repairs .

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 body control module (BCM). Refer to Circuit Testing and Wiring Repairs . 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 . 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 . 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 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. 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