Waveform 4

Knock sensor

KNOCK SENSOR WAVEFORM REFERENCE

ECM Terminal Names	Between KNK1 and EKNK
Tester Ranges	1 V/DIV., 1 msec./DIV.
Conditions	Engine speed maintained at 4,000 rpm after warming up engine

HINT:

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

Fig 1: Checking Waveform 4 Using An Oscilloscope
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