Knock Sensor: Service and Repair

Knock sensor, replacement

Removing the knock sensor (KS)

Remove the cable from the battery negative terminal. First read Battery, disconnecting Battery Disconnecting.
Empty the fuel injection system according to Fuel system pressure release Service and Repair.
Remove the intake manifold according to Intake pipe/gasket, replacement Intake Pipe/Gasket, Replacement.

Remove
- the screws for the knock sensors (KS)
- the tie strap at the connector.

Disconnect the connector. Pull the sensors downwards and past the rear edge of the starter motor bracket.

Installing knock sensors (KS)




Install the new sensor. Tighten by hand.
Route the cables on the outside of the starter motor bracket.
Align the sensors. The cable from the sensor for cylinder 2 = 3 o'clock and from the sensor for cylinder 4 = 6 o'clock.
Tighten the knock sensors (KS) to 20 Nm.
Press the connectors for the knock sensors (KS) together.
Check that the wiring is correctly positioned. Secure with a tie strap at the starter motor bracket.
Install the intake manifold according to Intake pipe/gasket, replacement Intake Pipe/Gasket, Replacement.
Install the battery negative lead. First read Battery, disconnecting Battery Disconnecting.