Knock Sensor Overview

NOTE:

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

Fig 1: Identifying Knock Sensor Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Cylinder Block
Locking Bolt
- 30 Nm
- With a rolled seal.
- The bore in the cylinder block is for locking the crankshaft with locking pin T40069.
Knock Sensor 1 -G61-
- Note the installed position: The wire connection points downward vertically.
Bolt
- 20 Nm
- Tightening specification affects the function of the knock sensor.
Bolt
- 10 Nm
Cover
Plug
Wire Clip
- Clamped on cover plate
Knock Sensor 2 -G66-
- Note the installed position: The wire connection points 45° toward the right on the outside.
Wire Bracket
- Bolted to Secondary Air Injection (AIR) valve.
Connector
- Green for the knock sensor 1.
- Installed position, refer to Fig 2.
- Contacts are gold plated.
Connector
- Gray for the knock sensor 2.
- Installed position, refer to Fig 2.
- Contacts are gold plated.

Fig 2: Identifying Installation Position Of Harness Connectors For Knock Sensors

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.