FixVault
Home
›
Lexus
›
2004
›
SC 430
›
Repair and Diagnosis
›
Engine Performance
›
System
›
SFI System - Diagnosis
›
Terminals Of ECM
›
Waveform 6
Waveform 6
Fig 1: Throttle Actuator Waveform Representation Table 6
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Igniter IGT signal (from ECM to igniter)
Igniter signal IGF (from igniter to ECM)
Fig 2: Throttle Actuator Waveform Representation (6 Of 13)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
HINT:
The wavelength becomes shorter as engine RPM increases.