Range Rover Sport (LS) V8-4.4L (2009)
Fuel Injector: Description and Operation
Electronic Engine Controls
Fuel Injectors
The engine has 8 fuel injectors (one per cylinder), each injector is directly driven by the ECM (engine control module). The injectors are fed by a
common fuel rail as part of a 'returnless' fuel system. The fuel rail pressure is regulated to 4.5 bar by a fuel pressure regulator which is integral to the fuel
pump module, within the fuel tank. The injectors can be checked by resistance checks. There is a fuel pressure test Schrader valve attached to the fuel
rail on the front LH (left-hand) side for fuel pressure testing purposes. The ECM (engine control module) monitors the output power stages of the
injector drivers for electrical faults.
The injectors have a resistance of 13.8 Ohms ± 0.7 Ohms @ 20 Degrees Celsius.