B1634-LEFT HI BEAM CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
- With the Headlamps activated.
- Set Condition:
- When the FCM detects a HIGH condition.
| Possible Causes |
| (L33) HIGH BEAM CONTROL CIRCUIT |
| LEFT HIGH BEAM BULB |
| FRONT CONTROL MODULE |
Diagnostic Test
1.INTERMITTENT CONDITIONDoes the Scan Tool read: B1634-LEFT HI BEAM CONTROL CIRCUIT HIGH?
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.
2.LEFT HIGH BEAM BULB
Is the inoperative bulb OK?
Yes
- Go To 3
No
- Replace the Inoperative bulb in accordance with the service information.
- Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
3.(L33) HIGH BEAM CONTROL CIRCUIT
Is the resistance above 5.0 ohms?
Yes
- Repair the (L33) High Beam Control circuit for an open condition.
- Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Replace the Front Control Module (FCM) in accordance with the service information.
- Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)