Diagnosis

Diagnosis

The wiper module has a non-volatile defective code memory. The wiper module and interface signals are checked for plausibility. If a fault occurs, the following fault messages can be stored:

- Washer pump or cable short circuit or open circuit or reservoir empty
- SRA (headlight wash system) pump or open circuit in cable or short circuit to ground
- Wet-arm heater or open circuit in cable or short circuit to ground
- Wiper sluggish
- Fault Hall sensor 1 armature
- Fault Hall sensor 2 armature
- Fault Hall sensor zero position
- Encoding error
- Internal control unit fault
- CAN fault

The following environmental conditions are stored in addition to the type of fault:

- Frequency
- Ambient temperature
- Battery voltage
- Mileage or km