Work Instruction 9 - 12
Fault Code 27
Fault Code 27
Central Flap Motor - No Reaction To Activation, Signal Implausible
Diagnostic conditions
- Ignition on
- No control unit fault stored
- No sensor supply voltage fault stored (5 V)
Possible cause of fault
- Short circuit to B+/ground/between wires or open circuit in wiring between air-conditioning system regulator and central flap
- Central flap stiff
- Central flap drive motor faulty
- Air-conditioning system regulator faulty
Affected pins
Plug B, pins 9, 14 and 20
Plug D, pins 4 and 12
Diagnosis/troubleshooting