C1238 Shuttled Reset Switch Concern Diagnosis

POSSIBLE SOURCE(S):
- HCU internal leaks around the rear inlet or rear outlet valves.
- Short circuit between the reset switch and the microprocessor during normal braking/driving.
- Solenoid energized when not in antilock mode by a defective antilock brake control module output.

ACTION(S) TO TAKE:
- Go to Pinpoint Test Q.