B1633

B1633-LEFT HI BEAM CONTROL CIRCUIT LOW





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

- When Monitored:
With the Headlamps active.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects a low condition in the (L33) Left High Beam Driver circuit.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all TIPM DTCs.
3. Turn the High Beam Lamps on.
4. With the scan tool, read DTCs.

Does the scan tool display DTC B1633-LEFT HI 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. (L33) LEFT HIGH BEAM DRIVER CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the TIPM C4 harness connector.
3. Disconnect the Left Headlamp Lamp harness connector.
4. Measure the resistance between ground and the (L33) Left High Beam Driver circuit.

Is the resistance below 5.0 Ohms?

Yes

- Repair the short to ground in the (L33) Left High Beam Driver circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.