01 ENGINE
13
High Pressure Fuel Rail
High Pressure
pump
Fuel Rail
Pressure Sensor
High Pressure Fuel Pump
The PCM maintains pressure by monitoring the fuel rail pressure sensor
Pressure is modifi ed by opening the spill control solenoid
Fuel pressure on the high pressure rail can only be inspected using WDS or
equivalent to monitor the fuel rail pressure sensor
The PCM energizes the spill control solenoid to control fuel pressure
High pressure fuel is dangerous. Fuel pressure must be released prior to
service by removing the fuel pump relay and cranking the engine
Spill
Control
Solenoid
Pump
Low fuel
pressure
return line
from rail
High
pressure
outlet to
fuel rail
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