B1633

B1633-LEFT HI 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 TIPM detects a low condition.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all TIPM DTCs.
3. Turn the Highbeam Headlamps on.
4. With the scan tool read the DTC information.

Does the scan tool read: 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. LEFT HIGH BEAM BULB
1. Turn the ignition off.
2. Inspect the Left High Beam Bulb assembly for a short condition.

Is the inoperative bulb OK?

Yes

- Go To 3

No

- Replace the inoperative bulb.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (L33) LEFT HIGHBEAM OUTPUT CIRCUIT
1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Measure the resistance between ground and the (L33) Left Highbeam Output circuit at the TIPM.

Is the resistance below 5.0 Ohms?

No

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

Yes

- Repair the (L33) Left Highbeam Output circuit for a short to ground condition.
- Perform the BODY VERIFICATION TEST. Body Verification Test.