Description of On-Board Diagnostic System

Notes on the BMW DIAGNOSTIC SYSTEM:

The vehicle variant is also specified in the identification page (model/engine type e.g. E 31 M70). If necessary, the EDC control unit can be newly coded or recorded under Point 5 Special Functions (selection page).

Troubleshooting:

Notes:

- Troubleshooting with BMW diagnostic system
- Battery charged, U min = 12 Volt
- Removal and installation of control unit only with ignition switched off

Attention: The EDC system is protected by way of the EDC relay K 67. The EDC does not operate if this relay fails. The EDC system is deactivated by means of the safety circuit integrated in the software of the control unit Operation is then only possible in the fixed stage "hard"" of the dampers.

Notes on working on the EDC system:

After all work on the EDC system which renders disconnection of connecters, removal/installation of electrical/electronic components necessary, the defect code memory of the EDC system must be monitored and cleared it a defect code has been entered to the above specified work.

On completion of work on the front axle system (front wheel suspension, shock absorbers, steering), perform the steering angle offset with the aid of the diagnostic program.