Auto Highbeam Module (AHBM)

B210B-85-SYSTEM VOLTAGE HIGH





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

- When Monitored:
With the ignition on.

- Set Condition:
The Auto High Beam Module detects the (F943) Fused Ignition Switch Output (Run-Start) circuit voltage is shorted high.





1. CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. (F943) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT SHORTED TO VOLTAGE




1. Turn the ignition off.
2. Remove Fuse M15 from the TIPM.
3. Disconnect the AHBM (Rearview Mirror) harness connector.
4. Turn the ignition on.
5. Measure the voltage of the (F943) Fused Ignition Switch Output (Run-Start) circuit.

Is there any voltage present?

Yes

- Repair the short to voltage in the (F943) Fused Ignition Switch Output (Run-Start) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.