Conditions

B2400








Stepping motor, air distribution flap. Open circuit
Stepping motor, air distribution flap. Short to ground

Fault symptoms
Perceive temperature in cabin too high or too low compared to the set temperature

The air Distribution does not correspond with the illuminated symbol in the ACC window

Conditions
The following conditions apply:
- When the current on one of the control module stepping motor outputs exceeds a certain value the diagnostic trouble code for short circuit will be set.
- If one of the stepping motor outputs detects that the standing current is lower than 55 mA, then the diagnostic trouble code for open circuit is set.
- Continuous monitoring and when calibrating.