B1637

B1637-RIGHT HIGH BEAM CONTROL CIRCUIT LOW





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

- When Monitored:
With the Headlamps activated.

- Set Condition:
When the Front Control Module (FCM) detects a low condition in the right high beam driver circuit.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all FCM DTCs.
3. Turn the high beam headlamps on.
4. With the scan tool read the DTCs.

Does the scan tool read: B1637-RIGHT HIGH BEAM CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. (L34) RIGHT HIGH BEAM DRIVER CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the FCM C2 harness connector.
3. Measure the resistance between ground and the (L34) Right High Beam Driver circuit.

Is the resistance below 5.0 Ohms?

Yes

- Repair the (L34) Right High Beam Driver circuit for a short to ground condition.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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