ORC Run/Start Driver Over Current

Test 1:

Tests 2 - 3:

Tests 4 - 8:

Test 9:

SYMPTOM
ORC RUN - START DRIVER OVER CURRENT

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) internal temperature 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 over current.

POSSIBLE CAUSES
- Verifying ORC run - start driver codes
- Check battery voltage
- FCM, run - start driver over voltage
- ORC, run - start test
- FCM run - start open test
- IPM, run - start driver circuit open
- ORC run - start driver circuit open
- FCM, run - start short test
- IPM, run - start short test
- ORC run - start driver circuit short
- Stored code or intermittent condition
- Active code present