Conditions

B2490








Heater flap motor left. Open circuit
Heater flap motor left. Short circuit

Fault symptoms
The perceived cabin temperature is too high or too low compared to the set temperature.

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.