Mode Door Inoperative

SYMPTOM
* MODE DOOR INOPERATIVE

POSSIBLE CAUSES
- BCM HVAC failure pretest
- No response/CCD bus failure (BCM)
- HVAC control head - ground circuit open
- HVAC mode sense circuit open
- Mode door driver (+) circuit short to B+
- Mode door driver (-) circuit short to ground
- HVAC control head mode sense defective
- Mode door driver (+) circuit open
- Mode door driver (-) circuit open
- Mode door driver (-) circuit short to B+
- Mode door actuator drive defective
- Mode door actuator linkage bind
- BCM mode door driver defective
- BCM - mode sense defective
- Mode door actuator default