Check With Oscilloscope & Universal Adapter

Connect terminal frequency OFF to terminal 1 of the universal adaptor lead of the BMW SERVICE TESTER and apply a frequency of 70 Hz. Connect the 88-pin universal adaptor (Cartool 614 410) to the DME control unit and connect the terminal D+ (Blue) to pins No. 3 or No. 32. The injection signal should be displayed on the oscilloscope. In contrast to measuring the pulse duration, injection fade-out during coasting can also be seen on the oscilloscope.