Mode Door Output Shorted to Ground

Test 1 - 2:

Test 3:

SYMPTOM
MODE DOOR OUTPUT SHORTED TO GROUND

WHEN MONITORED
Whenever the BCM attempts to move one of the HVAC actuators.

SET CONDITION
When the BCM detects one or more of the following outputs shorted to ground: mode driver, blend driver, recirc driver or common driver.

POSSIBLE CAUSES
- Mode door actuator
- Mode door driver circuit short to ground
- Mode door driver CKT short to sensor ground
- Mode door driver wire short to sensor ground