E 450 V8-6.0L DSL Turbo VIN P (2004)
Fuel Pressure Sensor/Switch: Description and Operation
INJECTION CONTROL PRESSURE SENSOR
Injection Control Pressure (ICP) Sensor
The injection control pressure (ICP) sensor is a variable capacitor sensor that is supplied a 5-volt reference signal by the PCM and returns a linear analog
voltage signal that indicates pressure. The sensor measures the oil pressure in the high pressure pump cover (F-SuperDuty/Excursion - Early Build) or oil
rail (E-Series or F-SuperDuty/Excursion - Late Build) and the PCM uses this information to determine injection control pressure. The ICP sensor along
with the injection control pressure regulator form a closed loop fuel pressure control system.
If the PCM detects an inoperative ICP sensor the PCM will control injection control pressure from a PCM-estimated injection control pressure.
