Prowler V6-3.5L VIN G (1999)
Fuel Injector
The engines uses top feed injectors.
The Automatic Shut Down (ASD) relay supplies battery voltage to the injectors. The PCM controls the ground path for each injector in sequence.
By switching the ground paths on and off, the PCM fine-tunes injector pulse width. Injector pulse width refers to the amount of time an injector
operates.
The PCM determines injector synchronization from the camshaft position sensor and crankshaft position sensor inputs. The PCM grounds the
ASD and fuel pump relays after receiving the camshaft position sensor and crankshaft position sensor inputs.
The PCM energizes the injectors in a sequential order during all engine operating conditions except start-up. During start-up, when the coolant
temperature is below 15°C (60°F), all injectors are energized at the same time. Above 15°C, the PCM energizes the injectors in sequence. Once
the PCM determines crankshaft position, it begins energizing the injectors in sequence.
