Description of On-Board Diagnostic System

Notes on the BMW DIAGNOSTIC SYSTEM:

Diagnosis with ZKE II:

For general information on diagnosis with the ZKE II (Central body electronics), see Central Body Electronics.
Central Control Module

Defect Code Memory:

Detects involving activation functions and the reset contact are stored in the defect code memory.

Test Procedure:

The test procedure enables guided inspection of the wiper/wash system. Resetting in the park position does not take place automatically when the wiper motor is activated. After activation, therefore, the wiper must be briefly switched on and off by means of the wiper switch.

Troubleshooting:

Notes:

- Troubleshooting with BMW DIAGNOSTIC SYSTEM
- Battery charged, U-min = 12 V
- The power supply to the general module, sunroof module and the door module is interrupted when the relay module is removed.
- Only remove and install the above modules with the ignition switched off. After reinstallation, clear defect code memory with *D* defect code memory.
- Wiper pressure control defective.