Schematic Reference: Interior Lights Schematics

Connector End View Reference: Master Electrical Component List

1

Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Important:: The sunload sensor assembly must indicate low light conditions for the interior lamps to operate.

1. Cover the sun load sensor assembly.
2. Observe the courtesy lamps.
3. Turn the courtesy lamp switch ON and OFF.
4. Open and close all of the doors.
5. Turn ON the ignition, with the engine OFF.
6. Turn OFF the ignition.

Do the courtesy lamps operate properly?

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

Go to Step 3

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Observe the Ambient Light Sensor parameter in the instrument panel module (IPM) with CJ2 or climate control panel (CCP) with C67 Inputs data list.
4. Uncover the ambient light sensor.

Does the Ambient Light Sensor input voltage change?

Go to Step 4

Go to Twilight Sentinel Delay Inoperative

With a scan tool command the Courtesy Lamp 1, 2 w/o dim output ON from the rear integration module (RIM) Output Control data list.

Do all of the interior courtesy lamps turn ON?

Go to Step 6

Go to Step 5

Are all of the interior courtesy lamps inoperative?

Go to Step 10

Go to Step 14

1. Turn the interior lamp switch ON.
2. With a scan tool, observe the Interior Lamp Switch parameter in the IPM with CJ2 or CCP with C67 Non-HVAC Data list.

Does the scan tool display ON?

Go to Step 7

Go to Step 8

1. Open all the doors.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe all the Door Jamb Sw. input parameters in the drivers door module (DDM) Inputs data list.

Does the scan tool display ON for all the door jamb switch inputs?

Go to Step 37

Go to Step 9

1. Disconnect the fog lamp switch.
2. Connect a 3-amp fused jumper between the courtesy lamp switch on signal circuit and the interior lamp switch ground circuit.
3. With a scan tool observe the Interior Lamp Switch parameter.

Does the scan tool display ON?

Go to Step 25

Go to Step 15

1. Turn OFF the ignition.
2. Disconnect the inoperative door lock actuator.
3. Connect a 3-amp fused jumper between the door open switch signal circuit of the door lock actuator and the ground circuit of the door lock actuator.
4. Turn ON the ignition, with the engine OFF.
5. With a scan tool, observe the inoperative Door Jamb Sw. input parameter.

Does the scan tool display ON for the inoperative Door Jamb Sw. input?

Go to Step 23

Go to Step 17

1. Turn OFF the ignition.
2. Disconnect the INT LP relay.
3. Turn ON the ignition, with the engine OFF.
4. Probe the INT LP relay control side supply voltage circuit with a test lamp that connected to ground.

Does the test lamp illuminate?

Go to Step 11

Go to Step 30

Probe the INT LP relay switch side supply voltage circuit with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 12

Go to Step 29

1. Connect a test lamp between the INT LP relay control side supply voltage circuit and the inadvertent power relay control circuit.
2. With a scan tool command the Courtesy Lamp 1, 2 w/o dim output ON and OFF.

Does the test lamp turn ON and OFF with each command?

Go to Step 13

Go to Step 21

1. Connect a 10-amp fused jumper wire between the switch side supply voltage circuit of the INT LP relay and the courtesy lamp supply voltage circuit of the INT LP relay.
2. With a scan tool, command the Courtesy Lamp 1, 2 w/o dim ON.

Do the interior lamps illuminate?

Go to Step 22

Go to Step 19

1. Turn ON the courtesy lamps.
2. Remove the inoperative courtesy lamp bulb.
3. Connect a test lamp between the inoperative courtesy lamp supply voltage circuit and the ground circuit of the inoperative courtesy lamp.

Does the test lamp illuminate?

Go to Step 28

Go to Step 19

Test the courtesy lamp switch on circuit for a high resistance, open or short to power. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 38

Go to Step 16

Test the interior lamp switch ground circuit 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 38

Go to Step 26

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

Did you find and correct the condition?

Go to Step 38

Go to Step 18

Test the ground circuit of the door lock actuator for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 38

Go to Step 24

Test the courtesy lamp supply voltage circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 38

Go to Step 20

Test the courtesy lamp control circuit for an open or short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 38

Go to Step 27

Test the inadvertent power relay control circuit of the INT LP relay for high resistance, an open or a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 38

Go to Step 27

Inspect for poor connections at the INT LP 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 38

Go to Step 31

Inspect for poor connections at the harness connector of the inoperative door lock actuator. 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 38

Go to Step 32

Inspect for poor connections at the harness connector of the inoperative door control 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 38

Go to Step 33

Inspect for poor connections at the harness connector of the fog lamp 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 38

Go to Step 34

Inspect for poor connections at the harness connector of the IPM with CJ2 or the HVAC control module (CCP) with C67. 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 38

Go to Step 35

Inspect for poor connections at the harness connector of the RIM. 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 38

Go to Step 36

Inspect for poor connections at the inoperative courtesy lamp bulb connector. 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 38

Go to Step 37

Repair the open or high resistance in the switch side supply voltage circuit of the INT LP relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 38

--

Repair the high resistance or open in the control side supply voltage circuit of the INT LP relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 38

--

Replace the INT LP relay. Refer to Wiring Repairs in Wiring Systems.

Did you complete the replacement?

Go to Step 38

--

Replace the inoperative door lock actuator . Refer to Front Side Door Latch Replacement or Rear Side Door Latch Replacement in Doors.

Did you complete the replacement?

Go to Step 38

--

Replace the inoperative door module. Refer to Door Control Module Replacement in Doors.

Did you complete the replacement?

Go to Step 38

--

Replace fog lamp switch. Refer to Fog Lamp Switch Replacement .

Did you complete the replacement?

Go to Step 38

--

Important:: After replacement perform the setup procedure for the IPM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Replace the IPM with CJ2 or HVAC control module (CCP) with C67. Refer to Instrument Panel Module Replacement in Body Control System or HVAC Control Module Replacement in HVAC Systems - Manual.

Did you complete the replacement?

Go to Step 38

--

Important:: After replacement perform the setup procedure for the RIM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Replace the RIM. Refer to Rear Integration Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 38

--

Replace the inoperative courtesy lamp bulb.

Did you complete the replacement?

Go to Step 38

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2