FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Injector Circuit

CIRCUIT DESCRIPTION
The injectors provide fuel to the intake manifold. They inject fuel into the cylinders based on the signals from the engine control module.








INSPECTION USING OSCILLOSCOPE
- INJECTOR SIGNAL WAVEFORM:
With the engine idling measure waveform between terminals #10 ~ #40 and EO1 of engine control module.

HINT: The correct waveform appears as shown in the images above.





DIAGNOSTIC CHART





WIRING DIAGRAM














INSPECTION PROCEDURE