Knock Sensor: Service and Repair

Knock Sensor Overview

• Two sensors are installed: knock sensor 1 and knock sensor 2.






1 Cylinder Block

2 Plug

• 30 Nm

• With a seal.

• Bore in the cylinder block is used when locking the crankshaft using the locking pin (T40069).

3 Knock Sensor 1 (G61)

• Note the installed position: The wire connection points downward vertically.

4 Bolt

• 20 Nm

• The tightening specification affects the function of the knock sensor.

5 Bolt

• 10 Nm

6 Cover Plate

7 Bayonet Connection

8 Wire Clip

• Clipped to the cover plate.

9 Knock Sensor 2 (G66)

• Note the installed position: The wire connection points 45° toward the right on the outside.

10 Wire Bracket

• Bolted to the Secondary Air Injection (AIR) valve.

11 Connector

• Green, for knock sensor 1.

• Installed position, refer to => [ Installed Position of the Harness Connectors for the Knock Sensors ].

• Contacts are gold plated.

12 Connector

• Gray, for knock sensor 2

• Installed position, refer to => [ Installed Position of the Harness Connectors for the Knock Sensors ].

• Contacts are gold plated.

Installed Position of the Harness Connectors for the Knock Sensors





1. Green, for knock sensor 1

2. Gray, for knock sensor 2