Schematic Reference: Interior Lights Schematics

Connector End View Reference: Lighting Systems Connector End Views or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

Verify that the courtesy lamps are inoperative.

Do the courtesy lamps operate normally?

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

Go to Step 3

Is only one courtesy lamp inoperative?

Go to Step 4

Go to Step 5

1. Inspect the inoperative bulb/socket for an open filament and open or corroded terminals and replace or repair as necessary.
2. If a bulb/socket problem is not found, repair the open or high resistance in the battery positive voltage circuit or courtesy lamp low control circuit to the inoperative lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 18

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Inspect for the following related body control module (BCM) data parameters as applicable. Refer to Scan Tool Data List and Scan Tool Data Definitions for typical values and definitions:

Was a problem found?

Go to Step 6

Go to Step 8

Disconnect and test the switch of the affected input circuit for proper continuity in the open and closed positions. Refer to Circuit Testing in Wiring Systems.

Does the switch operate properly?

Go to Step 7

Go to Step 12

Test the signal and ground circuits of the affected input circuit for a short to ground, an open, or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 13

Open the instrument panel (I/P) compartment.

Does the I/P compartment lamp illuminate?

Go to Step 10

Go to Step 9

Use a fused jumper to ground the inadvertent power relay control circuit.

Does the I/P compartment lamp illuminate?

Go to Step 13

Go to Step 15

Use a fused jumper to ground the courtesy lamp relay control circuit.

Do the courtesy lamps illuminate?

Go to Step 13

Go to Step 11

Test the following circuits for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 16

Inspect for poor connections at the harness connector of the affected switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 14

Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 17

Replace the switch in the affected circuit. Refer to one of the following replacement procedures as applicable:

Did you complete the replacement?

Go to Step 18

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Replace the inadvertent power relay.

Did you complete the repair?

Go to Step 18

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Replace the courtesy lamp relay.

Did you complete the repair?

Go to Step 18

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Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 18

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3