Schematic Reference: Interior Lights Schematics

1

Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - 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

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 appropriate reading lamp switch.
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 6

Go to Step 5

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

Did you correct the condition?

Go to Step 7

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Replace the appropriate reading switch. Refer to Roof Side Rail Lamp Replacement .

Did you complete the replacement?

Go to Step 7

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2