ORC Run/Start Driver Over Volt

Test 1:

Tests 2 - 3:

Tests 4 - 8:

Test 9:

SYMPTOM
ORC RUN - START DRIVER OVER VOLT

TEST NOTE
This symptom is diagnosed using the test 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) battery voltage when the ignition is in the Run or Start position.

SET CONDITION
The code will set if the microprocessor senses HSD battery voltage is over 30 volts.

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