Description of On-Board Diagnostic System

Notes on the BMW DIAGNOSTIC SYSTEM:

Diagnosis with ZKE II:

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

Defect Code Memory:

Defects involving the activation system (relay, wires) are stored in the defect code memory. In addition, the ZKE also detects a defective power window motor as well as defects in the data transfer to the power window switch block and to the door modules.

Test Procedure:

The test procedure enables guided inspection of the power window switches and components for the automatic window lowering function.

Troubleshooting:

Notes:

- Troubleshooting with the BMW DIAGNOSTIC SYSTEM
- Battery charged, U-min = 12 V
- If all functions of the ZKE are faulty, perform troubleshooting in accordance with Central Body Electronics.
Central Control Module