Operation CHARM: Car repair manuals for everyone.

ORC Run - Start Driver Short to Ground

Test 1-4:




Test 5-8:




Test 9-12:




Test 13:






SYMPTOM
ORC RUN - START DRIVER SHORT TO GROUND

TEST NOTE
This symptom is diagnosed using the test LOSS OF IGNITION RUN - START.

WHEN MONITORED
The FCM uses a microprocessor controlled transistor (high side driver) to supply power to the ORC. The microprocessor monitors the high side driver (HSD) circuit for short to ground when the ignition is in the Run or Start position.

SET CONDITION
The code will set within 1 second, if the microprocessor senses high HSD internal temperature. The high temperature is caused by short to ground.

POSSIBLE CAUSES
- ORC, loss of ignition run - start
- ACM, ORC run - start open
- FCM, ORC run - start open
- IPM, ORC run - start driver open
- ORC run - start driver circuit open
- FCM, ORC run - start short
- IPM, ORC run - start short
- ORC run - start circuit short
- ACM, ORC run - start driver circuit short
- High battery voltage
- FCM, run - start over voltage
- Stored code or intermittent condition
- Active code present