Blend Door Output Shorted to Ground

Test 1 - 2:

Test 3:

SYMPTOM
BLEND 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 door driver, blend door driver, recirculation door driver or the common door driver.

POSSIBLE CAUSES
- Blend air door driver circuit shorted to ground
- Blend air door driver circuit shorted to sensor ground
- Blend air door driver wire shorted to sensor ground
- Blend door actuator