Possible cause of fault
- Lacking information such as engine speed, outside temperature, speed or sun intensity, which are transferred via the CAN Comfort Bus for the purpose of air-conditioning regulati
NOTE:
- If the necessary information is not forthcoming, because the relative control unit is defective or faulty, the air-conditioning sytem regulator functions using substitute values and simultaneously saves the error code 35.
- In the menu item, actual values, the substitute values can be read out. The defective control unit or faulty sensor is also indicated, so the fault memory in the instrument cluster can be read out.
- If, for examle, actual values of a speed of 60 km/h for the air-conditioning in a stationary vehicle are given, this indicates a fault in the ABS/ PSM System and the consequent inaccurate speed signal.
NOTE:
- The CAN Comfort bus is connected to the following control modules:
- Air conditioning
- Instrument cluster