Schematic Reference: Interior Lights Schematics

Did you perform the Lighting Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Operate the courtesy lamps to verify the fault is present.

Does the system operate normally?

Go to Testing for Electrical Intermittents in Wiring Systems

Go to Step 3

Is only one lamp inoperative?

Go to Step 4

Go to Step 6

Test the courtesy lamps supply voltage circuit of the inoperative lamp a high resistance, an open, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 28

Go to Step 5

Test the ground circuit of the inoperative lamp a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 28

Go to Step 15

1. Ensure the dome lamp override switch is in the OFF position.
2. With the scan tool, read the dome override switch status.

Does the scan tool display the switch status as OFF?

Go to Step 8

Go to Step 7

1. Disconnect the headlamp and panel dimmer switch.
2. With the scan tool, read the dome override switch status.

Does the scan tool display the switch status as OFF?

Go to Step 16

Go to Step 14

1. Open the appropriate door.
2. With the scan tool, read the appropriate door jamb switch status.

Does the scan tool display the switch status as Active?

Go to Step 11

Go to Step 9

1. Disconnect the appropriate mini wedge (door jamb switch).
2. Connect a fused jumper wire between the door jamb switch signal circuit and the ground circuit of the door jamb switch.
3. With the scan tool, read the appropriate door jamb switch status.

Does the scan tool display the switch status as Active?

Go to Step 17

Go to Step 10

1. Connect a fused jumper wire between the door jamb switch signal circuit and a good ground.
2. With the scan tool, read the appropriate door jamb switch status.

Does the scan tool display the switch status as Active?

Go to Step 21

Go to Step 13

1. Remove the courtesy lamp relay.
2. Connect a fused jumper wire between the courtesy lamp low control circuit and the ground circuit at the courtesy lamp relay.
3. Open the drivers door.

Do the courtesy lamps light?

Go to Step 18

Go to Step 12

1. Reinstall the courtesy lamp relay.
2. Remove the inadvertent power relay.
3. Using J 35616 , connect a fused jumper wire between the fused battery positive circuit and the inadvertent power relay output circuit at the relay socket.
4. Open drivers door.

Do the courtesy lamps light?

Go to Step 19

Go to Step 20

Test the door jamb switch signal circuit between the mini wedge and the body control module (BCM). Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 28

Go to Step 20

Test the interior lamp defeat switch signal circuit of the BCM for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 28

Go to Step 20

Inspect for poor connections at the harness connector of the courtesy lamp. 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 28

Go to Step 22

Inspect for poor connections at the harness connector of the headlamp switch. 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 28

Go to Step 23

Inspect for poor connections at the harness connector of the mini wedge. 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 28

Go to Step 24

Inspect for poor connections at the harness connector of the courtesy lamp relay. 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 28

Go to Step 25

Inspect for poor connections at the harness connector of the inadvertent power relay. 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 28

Go to Step 26

Inspect for poor connections at the harness connector of the BCM. 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 28

Go to Step 27

Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 28

--

Replace the inoperative courtesy lamp.

Did you complete the repair?

Go to Step 28

--

Replace the headlamp and panel dimmer switch. Refer to Headlamp Switch Replacement .

Did you complete the replacement?

Go to Step 28

--

Replace the appropriate mini wedge (door jamb switch). Refer to Front Side Door Lock Actuator Replacement in Doors.

Did you complete the replacement?

Go to Step 28

--

Replace the courtesy lamp relay.

Did you complete the replacement?

Go to Step 28

--

Replace the inadvertent power relay.

Did you complete the replacement?

Go to Step 28

--

Important: Perform the setup procedure for the body control module.

Replace the body control module. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 28

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

Schematic Reference: Interior Lights Schematics

Did you perform the Lighting Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Operate the courtesy lamps to verify the fault is present.

Does the system operate normally?

Go to Testing for Electrical Intermittents in Wiring Systems

Go to Step 3

Is only one lamp inoperative?

Go to Step 4

Go to Step 6

Test the courtesy lamps PWM supply voltage circuit of the inoperative lamp for high resistance, an open, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 5

Test the ground circuit of the inoperative lamp a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 21

1. With the scan tool, read the dome override switch status.
2. Change the dome lamp override switch between the ON and OFF positions several times.

Does the scan tool display the switch status as expected?

Go to Step 9

Go to Step 7

1. Disconnect the headlamp and panel dimmer switch.
2. With the scan tool, read the dome override switch status.

Does the scan tool display the switch status as OFF?

Go to Step 8

Go to Step 20

Test the ground circuit to the headlamp switch for high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 22

1. Ensure that the dome override switch is in the OFF position.
2. Place the dome lamp switch in the ON position.
3. With the scan tool, observe the courtesy lamp switch data parameter.

Does the scan tool display ON?

Go to Step 11

Go to Step 10

Test the courtesy lamps on signal circuit of the headlamp switch for a short to voltage, short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 22

1. Open the drivers door.
2. With the scan tool, read the drivers door jamb switch status.

Does the scan tool display the switch status as Active?

Go to Step 14

Go to Step 12

1. Disconnect the appropriate mini wedge or door jamb switch.
2. Connect a fused jumper wire between the door jamb switch signal circuit and the ground circuit of the door jamb switch.
3. With the scan tool, read the appropriate door jamb switch status.

Does the scan tool display the switch status as Active?

Go to Step 23

Go to Step 13

1. Connect a fused jumper wire between the door jamb switch signal circuit and a good ground.
2. With the scan tool, read the appropriate door jamb switch status.

Does the scan tool display the switch status as Active?

Go to Step 27

Go to Step 19

Test the courtesy lamps PWM supply voltage circuit of the courtesy lamps module for a high resistance, an open, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 15

1. Remove the courtesy lamp module.
2. Connect a test lamp between the inadvertent power supply voltage circuit and the ground circuit of the courtesy lamp module.

Does the test lamp illuminate?

Go to Step 16

Go to Step 18

1. Measure the voltage from the courtesy lamp low control circuit of the courtesy lamp module to a good ground.
2. Open the drivers door.

Does the voltage measure near the specified voltage?

0 Volts

Go to Step 24

Go to Step 17

Test the courtesy lamps low control circuit of the courtesy lamps module for a high resistance, an open, or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 26

1. Reinstall the courtesy lamp module.
2. Remove the inadvertent power relay.
3. Connect a fused jumper wire between the fused battery positive circuit and the inadvertent power relay output circuit at the relay socket.
4. Open drivers door.

Do the courtesy lamps light?

Go to Step 25

Go to Step 28

Test the door jamb switch signal circuit between the mini wedge and the body control module (BCM). Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 26

Test the interior lamp defeat switch signal circuit of the BCM for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 35

Go to Step 26

Inspect for poor connections at the harness connector of the courtesy lamp. 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 35

Go to Step 29

Inspect for poor connections at the harness connector of the headlamp switch. 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 35

Go to Step 30a

Inspect for poor connections at the harness connector of the mini wedge. 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 35

Go to Step 31

Inspect for poor connections at the harness connector of the courtesy lamp module. 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 35

Go to Step 32

Inspect for poor connections at the harness connector of the inadvertent power relay. 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 35

Go to Step 33

Inspect for poor connections at the harness connector of the BCM. 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 35

Go to Step 34

Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 35

--

Repair the inadvertent power supply voltage or ground circuits of the courtesy lamp module. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 35

--

Replace the inoperative courtesy lamp.

Did you complete the repair?

Go to Step 35

--

Replace the headlamp and panel dimmer switch. Refer to Headlamp Switch Replacement .

Did you complete the replacement?

Go to Step 35

--

Replace the appropriate mini wedge, door jamb switch. Refer to Front Side Door Lock Actuator Replacement in Doors.

Did you complete the replacement?

Go to Step 35

--

Replace the courtesy lamp module. Refer to Lamp Control Module Replacement .

Did you complete the replacement?

Go to Step 35

--

Replace the inadvertent power relay.

Did you complete the replacement?

Go to Step 35

--

Important: Perform the setup procedure for the body control module.

Replace the body control module. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 35

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3