Rear Mode Control Doors Do Not Change Between Ceiling Vents (Cool) and Floor Vents (Hot)
Rear mode control doors do not change between ceiling vents (cool) and floor vents (hot)
Diagnostic Procedure:
Rear mode control motor circuit troubleshooting Rear Mode Control Motor Circuit Troubleshooting
Also check for:
- HVAC DTCs Initial Inspection and Diagnostic Overview
- Blown fuse No. 30 (10 A) in the under-dash fuse/relay box
- Cleanliness and tightness of all terminals