Schematic Reference: Interior Lights Schematics

DEFINITION: Courtesy lamps are inoperative from the door jamb switch or switches only.

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 Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Are the courtesy lamps inoperative from the driver door?

Go to Step 5

Go to Step 4

Are the courtesy lamps inoperative from all of the passenger doors?

Go to Step 7

Go to Step 6

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

Do the courtesy lamps illuminate?

Go to Step 8

Go to Step 9

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

Do the courtesy lamps illuminate?

Go to Step 8

Go to Step 9

Test the passenger door jamb switch signal circuit for an open or high resistance between the body control module (BCM) and splice 290. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 11

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

Did you find and correct the condition?

Go to Step 14

Go to Step 10

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

Did you find and correct the condition?

Go to Step 14

Go to Step 11

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

Did you find and correct the condition?

Go to Step 14

Go to Step 12

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 14

Go to Step 13

Replace the inoperative door jamb switch. Refer to Front Side Door Jamb Switch Replacement .

Did you complete the replacement?

Go to Step 14

--

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

Did you complete the replacement?

Go to Step 14

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3