Fault Code 29

Fault Code 29

Outside Air/Bypass Air Flap Motor - No Reaction To Activation, Signal Unclear

Diagnostic conditions
- Ignition on
- No control module fault stored
- No fault with power supply sensors (5 V) stored

Possible cause of fault
- Short circuit to B+/ground/between one another or open circuit in the wiring between the air-conditioning system regulator and outside air/bypass air flap
- Outside air/bypass air flap stiff
- Servo motor for outside air/bypass air flap faulty
- Air-conditioning system regulator faulty

Affected pins
Connector B, pin 4, pin 9, and pin 20
Plug D, pin 5 and pin 13

Diagnosis/troubleshooting

Work Instruction 1 - 3:

Work Instruction 4 - 7:

Work Instruction 8 - 12: