nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Electrical Specifications|Page 2431 > < Electrical Specifications|Page 2429
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Fuel Injector: Description and Operation

Fuel Injector

PURPOSE

Allow fuel to be injected into the intake manifold.

LOCATION

Mounted on the fuel rail.

OPERATION and CONSTRUCTION

The fuel injectors are small electrical solenoids. The injectors receive the ground circuit from the ECU in terms of "Injection Duration". The
voltage applied to the electrical windings pulls the needle valve up allowing fuel to flow through the nozzle.

WARNING: The positive circuit is always "Hot" at the injector terminals when the battery is connected.

Electrical Specifications|Page 2431 > < Electrical Specifications|Page 2429