A4 Sedan V6-2.8L (AFC) (1996)
Ignition Power Stage: Description and Operation
Ignition Power Stage
PURPOSE
The power output stage is an electronic switch that controls the ignition coil's discharge.
OPERATION
The Engine Control Module, based on inputs from the Camshaft Position Sensor and the crankshaft position sensor, will supply a ground for the
primary side of the coil via the power output stage.