Fault Code 0064

Fault code 0064

Servo motor rear left B-pillar

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

Possible causes of fault
- Short circuit to B+/ground/to each other or open circuit
- Vent flaps stiff
- Servo motor faulty
- Air-conditioning system regulator faulty

Affected pins
Air-conditioning system regulator control module, rear: Plugs B, C and D
- Plug B: Pin 7 'Left B-pillar flap (activate servo motor at rear left B-pillar)'
- Plug C: Pin 3 'Left B-pillar flap (activate servo motor at rear left B-pillar)'
- Plug C: Pin 5 'Left B-pillar flap (feedback signal lead servo motor at rear left B-pillar)'
- Plug D: Pin 3 '5 V reference voltage'
- Plug D: Pin 7 'Ground signal'

Diagnosis/troubleshooting