Anyone nows if it is possible to do some electrical measurement
on the control unit "computer" with out a breakoutbox
,The car is 1994 E320 with HFM injection.Having trouble with ignition no spark on the plug.
The crankshaft position sensor seems ok so is the cables and the ignition coil too. And I have voltage to the Ignition coil.I like to measurement the TN signal from the control unit thats why I need a breakout box.