I would like some advice as to how to connect an oscilloscope to an Audi 90
quattro in order to check out the ABS sensor outputs.
I have located the multiple connector under the rear seat and identified the
wires associated with each wheel sensor.
I'm not sure how to connect the oscilloscope leads -
a) into the unplugged connector ?
b) leave the connector in place and connect into the wires before the
c) if the connector is left in place, should the ignition be left 'on'
or 'off' ?
d) there are two connectors for each wheel sensor, should the scope lead
and its ground wire be connected across the two connectors ?
Any advice greatly appreciated,