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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Knock Sensor: Service and Repair



Knock Sensor Replacement

Removal Procedure




1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Disconnect the knock sensor (KS) harness electrical connector (6).




3. Remove the KS bolt.
4. Remove the KS.

Installation Procedure




1. Install the KS.

Notice: Refer to Fastener Notice.

2. Install the KS bolt.

Tighten the bolt to 25 N.m (18 lb ft).




3. Connect the KS harness electrical connector (6).
4. Lower the vehicle.