FixVault

Waveform 6

Fig 1: Throttle Actuator Waveform Representation Table 6
G01447330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Igniter IGT signal (from ECM to igniter)
  2. Igniter signal IGF (from igniter to ECM)
    Fig 2: Throttle Actuator Waveform Representation (6 Of 13)
    G01447331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The wavelength becomes shorter as engine RPM increases.