B163C

B163C-FRONT LEFT TURN CONTROL CIRCUIT HIGH





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
Continuously

- Set Condition:
When the Front Control Module (FCM) detects a short to battery on the front left turn signal circuit.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Clear all FCM DTCs.
3. Turn the Left Turn Signal on.
4. With the scan tool, read DTCs.

Does the scan tool read: B163C-FRONT LEFT TURN CONTROL CIRCUIT HIGH?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. (L61) FRONT LEFT TURN SIGNAL CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the Left Front Park Turn Lamp harness connector.
3. Disconnect the FCM C2 harness connector.
4. Measure the resistance of the (L61) Front Left Turn Signal circuit.

Is the resistance above 5.0 Ohms?

Yes

- Repair the open in the (L61) Front Left Turn Signal Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

3. (L61) FRONT LEFT TURN SIGNAL CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage on the (L61) Front Left Turn Signal circuit at the Left Front Park Turn Lamp harness connector.

Is there any voltage present?

Yes

- Repair the short to voltage in the (L61) Front Left Turn Signal circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. FRONT CONTROL MODULE (FCM)
1. Turn the ignition off.
2. Disconnect the Front Control Module from the PDC 49-way connector.
3. Measure the voltage between (L61) Front Left Turn Signal circuit and ground.

Is there any voltage present?

Yes

- Replace the Integrated Power Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Front Control Module (FCM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.