FreeAutoMechanic

KS - Knock Sensor

Ask Now!
 
 
 

Knock Sensor (KS)

OPERATION

The knock sensor is used to detect engine detonation (spark knock). As a result, a voltage sent to the PCM will retard spark timing. The KS is a piezoelectric accelerometer with the sensor designed to resonate at approximately the same frequency as the engine knock frequency.

The KS uses the resonant frequency to mechanically amplify the vibrations. This method allows relatively large signals to be achieved without electrical amplification and with small package size.

wiring diagrams
 

To prevent the replacement of good components, be aware that the following non-EEC areas may be at fault:

•Fuel (quality)
•Fuel (octane)
•Basic engine
•Spark timing

The sensor has a thin circular piezoelectric ceramic disk which is bonded to a metal diaphragm. Electrical connections are made through a two pin integral connector.

Voltages are specific for each different vehicle engine. You may refer to your repair manual for Specific Voltages for testing. No manual at home/shop. You may also purchase an Online Auto Repair Manual for just $16.99 that can be accessed right now over the net. Includes repair procedures, trouble codes, wiring diagrams and more.

Knock Sensor

Knock Sensor

GET AN ONLINE REPAIR MANUAL FOR YOUR CAR - Get on-line access to drive belt routing, repair instructions, wiring diagrams, trouble code diagnostic charts and updated factory bulletins.
   
divider
 
Top Free Categories
Serpentine Belt Routing Diagrams
Car Owners Manuals
Auto Wiring Diagrams
Auto Repair Manuals
Auto Repair Estimates
Auto Repair Questions
Auto Insurance Quotes
Timing Belt Replacement
Printable Nut & Bolt Measuring Charts
by Manufacturer
  • Acura
  • Audi
  • BMW
  • Buick
  • Cadillac
  • Chevy
  • Chrysler
  • Datsun
  • Dodge
  • Ford
  • GEO
  • GMC
  • Honda
  • Hyundai
  • Infiniti
  • Isuzu
  • Jaguar
  • Jeep
  • Kia
  • Lexus
  • Lincoln
  • Mazda
  • Mercedes
  • Mercury
  • Mitsubishi
  • Nissan
  • Oldsmobile
  • Plymouth
  • Pontiac
  • SAAB
  • Saturn
  • Scion
  • Subaru
  • Suzuki
  • Toyota
  • VW
  •  
    Top Maintenance and Repair
    Air Conditioning Troubleshooting
    Brakes
    Check Engine Trouble Codes
    Engine
    Engine Sensors
    Electrical
    Maintenance
    No Start Diagnostics
    Engine Overheating Diagnostics
     
     
    Content © FreeAutoMechanic.com. 2006 - 2014 All Rights Reserved | Privacy Policy | Contact | Terms of Service | About