Knock Sensor(s)

Knock sensor (KS) works like a microphone to "listen" for spark knock (detonation). When detonation occurs, ignition timing is retarded until knock is eliminated.

One sensor is used on 2.0L engine. On 2.8L engine, 2 knock sensors are mounted on sides of engine block. Knock sensor I monitors cylinders No. 1, 3 and 5. Knock sensor II monitors cylinders No. 2, 4 and 6.