Lumina APV V6-3800 3.8L (1994)
Knock Sensor: Description and Operation
The knock sensor is located in the engine block and sends a signal to the ESC module which then sends a signal to the PCM which retards ignition
timing during a spark knock condition. When the knock sensor senses no more knocking the PCM advances timing in small increments. This allows the
PCM to maintain maximum timing advance under various conditions.
