Knock Sensor (Prizm GSi 4A-GE VIN 5)
Knock sensor, located in rear of cylinder block, sends a variable AC voltage signal to ECM depending on engine detonation. The ECM uses this signal to determine whether to retard ignition timing.
Knock sensor, located in rear of cylinder block, sends a variable AC voltage signal to ECM depending on engine detonation. The ECM uses this signal to determine whether to retard ignition timing.