Grand Vitara 4WD L4-2.4L (2009)
Knock Sensor: Testing and Inspection
Knock Sensor Inspection
1. Disconnect connector (2) from knock sensor.
2. Connect oscilloscope (1) as shown in figure.
3. Check that knock sensor signal (1) shows the following waveform when cylinder block is given a shock by plastic hammer.
If faulty condition is found, replace knock sensor.
