Fault Code Diagnosis Equipment Connection
Turn ignition off. Disconnect EDS control unit connector. Install 25-pin Test Cable (124 589 33 63 00) between EDS control unit and EDS control unit connector. Connect Test Cable (124 589 34 63 00) between 25-pin test cable and Contact Box (124 589 00 21 00). See Fig 1 . Connect DVOM as instructed in diagnostic information.