Driver Blend Door Not Responding (Active)

Test 1-2:

Test 3-7:

SYMPTOM
DRIVER BLEND DOOR NOT RESPONDING (ACTIVE)

WHEN MONITORED
With the ignition on and the IOD fuse installed.

SET CONDITION
This DTC is set if the ATC does not receive feedback pulses within 5 seconds of the drive voltage being applied.

POSSIBLE CAUSES
- Driver blend door driver circuit (A) shorted to ground
- Driver blend door driver circuit (B) shorted to ground
- Driver blend door driver circuits (A) and (B) shorted together
- Driver blend door driver circuit (A) open
- Driver blend door driver circuit (B) open
- ATC
- Driver blend door actuator