Knock Sensor (Prizm GSi)
Knock sensor, located in rear of cylinder block, sends a variable AC voltage signal to ECM depending on engine detonation. ECM uses this signal to determine if ignition timing should be retarded.
Knock sensor, located in rear of cylinder block, sends a variable AC voltage signal to ECM depending on engine detonation. ECM uses this signal to determine if ignition timing should be retarded.