Schematic Reference: Interior Lights Schematics

Connector End View Reference: Master Electrical Component List in Wiring Systems

1

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Important:: The sun load sensor assembly must indicate low light conditions for the courtesy lamps to operate.

1. Cover the sun load sensor assembly.
2. Observe the ignition key cylinder lamp.
3. Open a door.
4. Close the door.
5. Wait more than 41 seconds.

Does the ignition key cylinder lamp operate properly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Do the courtesy lamps operate properly?

Go to Step 4

Go to Courtesy Lamps Always On and Courtesy Lamps Inoperative

Test the key cylinder lamp control circuit of the ignition key cylinder lamp for short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step 5

Inspect for poor connections at the harness connector of the IPM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step 6

Important:: Perform the setup procedure for the IPM after replacement.

Replace the IPM. Refer to Instrument Panel Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 7

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Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2