Knock Sensor: Service and Repair

Knock Sensor Overview

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






1 Cylinder Block

2 Locking Bolt

• 30 Nm

• With a rolled seal.

• The bore in the cylinder block is for locking the crankshaft with locking pin (T40069).

3 Knock Sensor 1 (G61)

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

4 Bolt

• 20 Nm

• Tightening specification affects the function of the knock sensor.

5 Bolt

• 10 Nm

6 Cover

7 Plug

8 Wire Clip

• Clamped on 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 Secondary Air Injection (AIR) valve.

11 Connector

• Green for the knock sensor 1.

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

• Contacts are gold plated.

12 Connector

• Gray for the knock sensor 2.

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

• Contacts are gold plated.

Installed Position of the Knock Sensor Connectors





1. Green for knock sensor 1

2. Gray for knock sensor 2