Rear A/C-Heater Control, Rear Blower Control Inoperative

Tests 1 - 3:

SYMPTOM
REAR A/C HEATER CONTROL, REAR BLOWER CONTROL INOP IN ONE MORE SPEEDS

POSSIBLE CAUSES
- Rear blower speed circuit(s) open
- Rear A/C - heater control
- Rear blower control feed circuit open
- A/C - heater control module