Left Stop Lamp Inoperative

*LEFT STOP LAMP INOPERATIVE









Diagnostic Test

1. INSPECT THE LEFT TAIL/STOP LAMP BULB

NOTE: If all stop lamps are inoperative, inspect Fuse 2 located in the Illumination Control Module/IP Fuse Block. If the fuse is open, repair the cause of the open fuse before continuing.

Turn the ignition off.

Remove the Left Tail/Stop Lamp bulb and inspect for an open filament.

Is the Bulb filament open?

Yes

- Replace the Left Tail/Stop Lamp bulb.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Go to 2

2. MEASURE FUSED B(+) CIRCUIT RESISTANCE





Disconnect the Left Rear Lamp Assembly harness connector.

Disconnect the Illumination Control Module harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between the Left Rear Lamp Assembly harness connector and the Illumination Control Module harness connector.

Is the resistance below 5.0 ohms?

Yes

- Go to 3

No

- Repair the Fused B(+) circuit for an open between the Left Rear Lamp Assembly and the Illumination Control Module.
- Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE LEFT TAIL/STOP LAMP VOLTAGE





Connect the Illumination Control Module harness connector.

Depress the brake pedal.

Measure the voltage between the Left Rear Lamp Assembly harness connector cavity 4 and ground.

Is the voltage above 10 volts?

Yes

- Go to 4

No

- Replace the Illumination Control Module.
- Perform BODY VERIFICATION TEST. Body Verification Test

4. MEASURE LEFT TAIL/STOP LAMP GROUND CIRCUIT RESISTANCE





Release the brake pedal.

Measure the resistance between the Left Rear Lamp Assembly harness connector and ground.

Is the resistance below 5.0 ohms?

Yes

- Ensure that the Left Tail/Stop Lamp bulb is installed properly and replace the bulb socket if necessary.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the Left Rear Lamp Assembly ground circuit fro an open.
- Perform BODY VERIFICATION TEST. Body Verification Test