Lamps/Lighting - Exterior

900C-LEFT HIGH BEAM CONTROL CIRCUIT LOW-BCM





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
- With the Headlamps activated.
- Set Condition:
- When the BCM detects a LOW condition.





Diagnostic Test

1. INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all BCM DTC's.
Turn the High beam Headlamps on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: 900C-LEFT HIGH BEAM CONTROL CIRCUIT LOW-BCM?

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 - VER 1. Verification Tests

2. LEFT HIGH BEAM OUTPUT CIRCUIT




Turn the ignition off.
Disconnect the BCM C7 harness connector.
Disconnect the Left Headlamp harness connector.
Measure the resistance between ground and the Left Highbeam Output circuit.
Is the resistance below 5.0 ohms?

Yes

- Repair the Left Highbeam Output circuit for a short to ground condition.
- Perform the BODY VERIFICATION TEST - VER 1. Verification Tests

No

- Replace the Body Control Module (BCM).
- Perform the BODY VERIFICATION TEST - VER 1. Verification Tests