Your Vehicle: 2001 Ford Escort ZX2 L4-2.0L DOHC VIN 3
 
Vehicle » Powertrain Management » Sensors and Switches - Powertrain Management » Sensors and Switches - Ignition System » Knock Sensor » Description and Operation  
 
 
  Description and Operation  
 

Knock Sensor

Two Types Of Knock Sensor (KS)
  

The Knock Sensor (KS) (Figure 35) is a tuned accelerometer on the engine which converts engine vibration to an electrical signal. The PCM uses this signal to determine the presence of engine knock and to retard spark timing.