Fuel Injectors: Notes
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NOTE:
Do not apply battery positive (B+) voltage directly to the fuel injector electrical connector terminals. Internal damage to the solenoid may occur in a matter of seconds.
The fuel injector is a solenoid-operated valve that meters fuel flow to the engine. The fuel injector opens and closes a constant number of times per crankshaft revolution. The amount of fuel is controlled by the length of time the fuel injector is held open.
The fuel injector is normally closed, and is operated by a 12-volt source from either the PCM power relay or fuel pump relay. The ground signal is controlled by the PCM.
The injector is a deposit resistant injector (DRI) type and does not have to be cleaned. Install a new fuel injector if the flow is checked and found to be out of specification.