Knock Sensor: Service and Repair

Knock Sensors

Electrical Connectors





7 Knock Sensor 3 (G198)
8 Knock Sensor 4 (G199)
14 Knock Sensor 2 (G66)
15 Knock Sensor 1 (G61)

Removing

• Fuel system is under high pressure! Before opening high pressure components of the fuel injection system, pressure must be relieved to residual pressure. Refer to => [ Before Opening High Pressure Fuel Injection System ] Service and Repair.

• Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.

• Observe safety precautions when disconnecting the battery.

- Remove the intake manifold. Refer to => [ Intake Manifold ] Intake Manifold.

Remove the respective right cylinder bank knock sensor.





12 Knock sensor 1 (G61)
13 Knock sensor 2 (G66)

Remove the respective left cylinder bank knock sensor.





11 Knock sensor 3 (G198)
10 Knock sensor 4 (G199)

Installing

- Install the removed knock sensor.

• Tightening specifications affects function of Knock Sensor.

Knock sensor tightening specification, refer to => [ Ignition Assembly Overview ] Service and Repair.

- Reinstall intake manifold, refer to => [ Intake Manifold ] Intake Manifold.