Left Front Turn Lamp Inoperative

LEFT FRONT TURN LAMP INOPERATIVE

Left Front Turn Lamp Inoperative:

POSSIBLE CAUSES
- Fused B(+) circuit open
- Ground circuit open
- Left front turn lamp bulb

DIAGNOSTIC TEST

1. INSPECT THE LEFT FRONT TURN LAMP BULB

NOTE: If all of the turn signal lamps and both of the back up lamps are inoperative, inspect Fuse 4 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 Front Turn Lamp bulb and inspect for an open filament.

Q: Is the Bulb filament open?

YES: Replace the Left Front Turn Lamp bulb. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 2

2. MEASURE FUSED B(+) CIRCUIT RESISTANCE




Disconnect the Left Front Lamp Assembly harness connector.
Disconnect the Multi-Function Switch harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between the Left Front Lamp Assembly harness connector and the Multi-Function Switch 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 Front Turn Lamp and the Multi-Function Switch. Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE LEFT FRONT TURN LAMP VOLTAGE




Connect the Multi-Function Switch harness connector.
Turn the ignition on.
Turn the left turn signal on.
Measure the voltage between the Left Front Lamp Assembly harness connector cavity 1 and ground.

Q: Is voltage present?

YES: Go to 4
NO: Replace the Multi-Function Switch. Perform BODY VERIFICATION TEST. Body Verification Test

4. MEASURE LEFT FRONT TURN LAMP GROUND CIRCUIT RESISTANCE




Turn the ignition off.
Turn the left turn signal off.
Measure the resistance between the Left Front Lamp Assembly harness connector cavity 2 and ground.

Q: Is the resistance below 5.0 ohms?

YES: Ensure that the Left Front Turn Lamp bulb is installed properly and replace the bulb socket if necessary. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Repair the Left Front Lamp Assembly ground circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test