Schematic Reference: Interior Lights Schematics

1

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

Place the appropriate reading lamp in the ON position.

Does the reading lamp operate properly?

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

Go to Step 3

Does the courtesy lamp function of the inoperative reading lamp operate properly?

Go to Step 4

Go to Courtesy Lamps Inoperative

1. Disconnect the inside rearview mirror.
2. Probe the ground circuit of the reading lamp switch with a test lamp that is connected to battery voltage.

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

Inspect for poor connections at the harness connector of the inside rearview mirror. 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 8

Go to Step 7

Repair an open or high resistance in the ground circuit of the reading lamp switches. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you correct the condition?

Go to Step 8

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Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement in Stationary Windows.

Did you complete the replacement?

Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2