Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUZUKI2010KIZASHI FWD L4-2.4LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSKNOCK SENSORTESTING AND INSPECTION
2010 Suzuki Kizashi FWD L4-2.4L
Knock Sensor: Testing and Inspection
2010 Suzuki Kizashi FWD L4-2.4LSECTION Testing and Inspection
Knock Sensor Inspection
1. With ignition mode of keyless push start system in "OFF", 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 plastic hammer inflicts a strong impact on the cylinder block.
If faulty condition is found, replace knock sensor.
1. With ignition mode of keyless push start system in "OFF", 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 plastic hammer inflicts a strong impact on the cylinder block.
If faulty condition is found, replace knock sensor.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.