B2492

Stepping motor air-mixing damper. Open circuit
Stepping motor air-mixing damper. Short circuit












Fault symptom
Experienced temperature in cabin is too high or low when compared to set temperature.

Conditions
The following conditions apply:
- When the voltage exceeds a certain value on any of the stepping motor outputs, a diagnostic trouble code for short-circuiting is generated.
- If any of the stepping motor outputs sense a control voltage lower than 55 mA, a diagnostic trouble code for open circuit is generated.
- Continuous monitoring and during calibration.