Fuel Injector Wiring Harness: Description and Operation
PURPOSEThe fuel charging wiring:
- connects the engine control sensor wiring to each fuel injector and other electronic engine controls such as throttle position sensor and idle air control valve.
- receives fuel injector signals from the Powertrain Control Module (PCM) and transfers the signals to the fuel injector.
- on natural gas engines, the fuel injector signals are sent to the fuel injectors through the Natural Gas Vehicle (NGV) module.
The signals from the powertrain control module determine the fuel injection sequence and duration each fuel injector will stay open to allow fuel into the combustion chambers.