Left Tail Lamp Inoperative

LEFT TAIL LAMP INOPERATIVE

Left Tail Lamp Inoperative:

POSSIBLE CAUSES
- Fused B(+) circuit open
- Ground circuit open
- Left tail/stop lamp bulb

DIAGNOSTIC TEST

1. INSPECT THE LEFT TAIL/STOP LAMP BULB

NOTE: If the left front side marker lamp, the left park lamp, the left rear side marker lamp, and the left tail lamp are inoperative, inspect Fuse 10 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.

Q: 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.

Q: 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.
Turn the tail lamps on.
Measure the voltage between the Left Rear Lamp Assembly harness connector cavity 2 and ground.

Q: 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




Turn the tail lamps off.
Measure the resistance between the Left Rear Lamp Assembly harness connector and ground.

Q: 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 for an open. Perform BODY VERIFICATION TEST. Body Verification Test