Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Knock Sensor: Service and Repair

Removal and Installation




1. Disconnect the knock sensor (KS) electrical connector.

NOTE: The KS is located on the RH side of the cylinder block




2. Remove the bolt and the KS.
3. To install, reverse the removal procedure.