Waveform 2

Knock sensor

KNOCK SENSOR SPECIFICATIONS

ECM Terminal Name	Between KNK1 and EKNK Between KNK2 and EKN2
Tester Range	1 V/DIV, 1 msec./DIV
Condition	Maintain engine RPM at 2,000 RPM after engine warmed-up

HINT:

The wavelength becomes shorter as engine RPM increases.
The waveforms and amplitudes displayed differ slightly depending on the vehicle.

Fig 1: Knock Sensor - Waveform
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