Waveform 6

Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM)

IGNITER IGT SIGNAL (FROM ECM TO IGNITER) AND IGNITER IGF SIGNAL (FROM IGNITER TO ECM) WAVEFORM REFERENCE

ECM Terminal Names	Between IGT (1 to 4) and E1 Between IGF1 and E1
Tester Ranges	2 V/DIV., 20 msec./DIV.
Conditions	Idling

HINT:

The wavelength becomes shorter as the engine rpm increases.

Fig 1: Checking Waveform 6 Using An Oscilloscope