Signal Test Using Oscilloscope

Image Legend:
1 D+, blue
2 Terminal 1, black
3 Terminal 31, brown

Signal Test Using Oscilloscope:

Measuring instrument: BMW SERVICE TESTER

Test lead: Terminal 1, black; Terminal D+, blue; Terminal 31, brown

Test Procedure

Connect terminal 31 to vehicle ground, connect terminal 1 and terminal 0+ to the wire to be tested.

To facilitate triggering, the lead terminal 1 (black) can be connected to the lead "FREQ OFF" (blue). (-> Frequency for triggering specified).

Select *M* for multimeter and "22" for oscilloscope.

The measured signal is displayed on the oscilloscope.