B1637

B1637-RIGHT HIGH BEAM CONTROL CIRCUIT LOW

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

- When Monitored:
With the High Beam Headlamps activated.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects a low condition.





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

Does the scan tool display active: B1637-RIGHT HIGH BEAM CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. RIGHT HIGH BEAM BULB
1. Turn the ignition off.
2. Disconnect the Right High Beam Bulb.
3. Turn the ignition on.
4. With the scan tool, read DTCs.

Does the DTC reset?

Yes

- Go To 3

No

- Replace the Right High Beam Bulb.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (L34) RIGHT HIGH BEAM CONTROL CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Disconnect the Right Headlamp harness connector.
4. Measure the resistance between ground and the Right High Beam Control circuit.

Is the resistance above 10k Ohms?

Yes

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

No

- Repair the (L34) Right High Beam Control circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.