90 Quattro 20V (Canada) L5-2309cc 2.3L DOHC (7A) (1989)
Air Door Actuator / Motor: Adjustments
Feedback Potentiometer
Feedback Potentiometer
1. Remove temperature control flap adjusting motor but do not separate harness.
2. Switch ignition ON, set A/C control head temperature to HI, select diagnosis channel 8. Approximately 9-14 is displayed, adjust to display value: 12.
3. Turn screwdriver to adjust value:
- A to increase value.
- B to decrease value.
4. When adjustment value is correct, set A/C control head temperature to LO. Display code must be less than 245.
5. If display code is more than 245, set A/C control head temperature to HI. Re-adjust feedback potentiometer to a lower value, but not less than 9.
6. Set A/C control head temperature to LO, re-check display. Display code must be less than 245. If not, return to step 5.