Knock sensor — check and replace

You will need a multimeter to do the job (in voltmeter mode).

Removing

1. We prepare the car for work (see "Preparing the car for maintenance and repair").

2. By pressing the latch, disconnect the wiring harness block (2) from the knock sensor. socket wrench by 13 mm unscrew the bolt securing the sensor to the cylinder block.

Examination

1. Connect a multimeter to the sensor terminals (in voltmeter mode with a measurement limit of up to 200 mV).



2. Metal object (bolt, screwdriver) lightly tap on the sensor, while voltage surges should be observed on the voltmeter. A defective sensor does not respond to shocks. In this case, we replace it.

Note: The sensor can be checked more accurately only on a special stand.

Installation

Install the sensor in the reverse order of removal.