Electronic Fuel Injection System — Check [Toyota Camry XV20]

The pulse multi-point fuel injection system includes three subsystems: the air intake system (air filter, air intake ducts, air flow sensor, throttle, idle air control system and intake manifold), electronic control system and fuel supply system (fuel pump, fuel pressure regulator, fuel injectors and fuel line, fuel system relay).

Checking the electronic fuel injection system includes checking the functioning of all its subsystems and subsystem elements.

Examination

1. To check the injectors, start the engine and apply a special stethoscope to each of them. If you hear clicks, then the injector is functioning normally.



2. If the injector does not click, connect a special lamp to the contacts of the wire of each injector. If the lamp blinks, then the correct voltage is supplied to the injector contacts.





3. Turn off the engine, disconnect the wires from the injectors and measure the resistance of each injector with an ohmmeter. Compare the results with the technical requirements.