S4 V8-4.2L (BHF) (2004)
signal) and terminal 1 (B+); the harness connector remains connected.
NOTE: Connector sockets are numbered respectively on the rear side of the connector.
-
Operate starter for a few seconds.
-
LED must blink.
NOTE: Voltage testers do not go out completely during low current pick-up between activations by the ECM, but rather continue to glow a little
and then get significantly brighter during activation.
-
Switch ignition off.
If LED does not blink.