Fault Code 0710

Fault Code 0710

Defrost flap servo motor

Diagnostic conditions
- Ignition on
- Battery voltage OK (11.4 to 14.5 V)
- Internal function test completed on air-conditioning system regulator control module

Possible causes of fault
- No or incorrect basic setting
- Short circuit to ground
- Open circuit/short circuit to B+
- Servo motor flap stiff
- Servo motor faulty
- Front air-conditioning system regulator faulty

Affected pins
- 2-zone and 4-zone air conditioning systems

Air-conditioning system regulator control module, front: Plugs A, C and E
- Plug A: Pin 2 Defrost flap (feedback signal lead, defrost flap servo motor)
- Plug C: Pin 6 Defrost flap (defrost flap servo motor OPEN)
- Plug C: Pin 24 Defrost flap (defrost flap servo motor CLOSED)
- Plug E: Pin 1 5 V reference voltage
- Plug E: Pin 8 Ground signal
- Manual air conditioning

Air-conditioning system regulator control module, front: Plugs A, C and E
- Plug A: Pin 1 Defrost flap (defrost flap servo motor CLOSED)
- Plug A: Pin 9 Defrost flap (defrost flap servo motor OPEN)
- Plug C: Pin 15 Defrost flap (feedback signal lead, defrost flap servo motor)
- Plug E: Pin 1 5 V reference voltage
- Plug E: Pin 8 Ground signal

Diagnosis/troubleshooting
- 2-zone and 4-zone air conditioning systems

Work Instruction 1 - 4:

Work Instruction 5 - 6:

Work Instruction 7 - 10:

Work Instruction 1 - 3:

Work Instruction 4 - 5:

Work Instruction 6 - 10: