B1639

B1639-RIGHT HI BEAM CONTROL CIRCUIT OPEN





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

- When Monitored:
With the High Beam Headlamps active.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects an open in the (L34) Right 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 Headlamps on.
4. With the scan tool, read DTCs.

Does the scan tool display DTC B1639-RIGHT HI BEAM CONTROL CIRCUIT OPEN?

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. RIGHT HIGH BEAM BULB
1. Turn the ignition off.
2. Inspect the Right High Beam Bulb Assembly.

Is the inoperative bulb OK?

Yes

- Go To 3

No

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

3. (L34) RIGHT HIGH BEAM DRIVER CIRCUIT OPEN




1. Disconnect the TIPM C4 harness connector.
2. Disconnect the Right Headlamp Lamp harness connector.
3. Measure the resistance of the (L34) Right High Beam Driver circuit between the Right Headlamp Lamp harness connector and the TIPM C4 harness connector.

Is the resistance above 5.0 Ohms?

Yes

- Repair the open in the (L34) Right 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.