Schematic Reference: Interior Lights Schematics

Connector End View Reference: Master Electrical Component List

DEFINITION: All instrument panel (I/P) courtesy dome and roof rail courtesy lamps are inoperative from any door or the I/P dimmer switch.

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Turn ON the ignition, with the engine OFF.
2. Open and close all of the vehicle doors.
3. Observe the courtesy lamps.

Do the courtesy lamps illuminate when each door is opened?

Go to Step 4

Go to Step 3

Are the courtesy lamps inoperative from the lamp switch assembly also?

Go to Step 4

Go to Step 7

1. Disconnect the lamp switch assembly.
2. Install a jumper between the courtesy lamp switch on signal circuit and ground.

Do the courtesy lamps illuminate?

Go to Step 15

Go to Step 5

Test for a poor connection, open or a short to ground in the INT LIGHT fuse voltage supply circuit of the body control module (BCM). Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 6

Test for short to ground or an open in the courtesy lamp supply voltage circuit of the BCM. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 9

Are the courtesy lamps inoperative from all the doors?

Go to Step 13

Go to Step 8

1. Close all of the vehicle doors, except the inoperative door.
2. Disconnect the inoperative door lock switch.
3. Connect a 3-amp fused jumper wire between the door open switch signal wire and ground.

Do the courtesy lamps illuminate?

Go to Step 11

Go to Step 12

Test for a poor connection, an open, or a short to battery positive voltage in the courtesy lamp switch on signal circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 10

Test for a short to battery positive voltage or a open in the I/P dimming return circuit of the BCM. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 17

Test the ground circuit of the inoperative door lock switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 16

Test the inoperative door lock switch open circuit for the following:

Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 17

1. Disconnect the lamp switch assembly.
2. Open and close the driver door.

Do the courtesy lamps illuminate?

Go to Step 17

Go to Step 14

Test for a short to ground in the courtesy defeat circuit of the BCM. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

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Test for a poor connection or an open in the ground circuit of the lamp switch assembly.

Did you find and correct the condition?

Go to Step 21

Go to Step 19

Inspect for a poor connections at the harness connector of the inoperative door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 18

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

Did you find and correct the condition?

Go to Step 21

Go to Step 20

Replace the inoperative door lock switch. Refer to Front Side Door Lock Replacement or Rear Door Lock Replacement .

Did you complete the replacement?

Go to Step 21

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Replace the lamp switch assembly. Refer to Headlamp Switch Replacement .

Did you complete the repair?

Go to Step 21

--

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 21

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3