Defect Code 03

Defect Code 03:

Explanation:

Defect on the connection link (interface) to the DME (ignition timing adjustment)

Possible cause:

Short or break on the wire to the DME control unit

Troubleshooting:

Switch off ignition and detach control unit connector.

Check ZWV wire from ABS/ASC+T Pin 39 to the DME and repair If necessary.

Connect control unit and switch on ignition.

Read out ignition angle (dynamic) by way of the DME diagnostic program *D* 200 Status monitoring for both DME control units.

Simulate ASC+T control mode; the ignition angle must be set towards retard.

If the ignition timing is not adjusted, there is a defect either in the ABS/ASC+T or in a DME control unit.

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*D*: Diagnostic Mode; Connect the BMW DIAGNOSTIC SYSTEM to the vehicle. Select control unit and set up diagnostic mode with the control unit.