FUEL PRESSURE RELIEF VALVE [SKYACTIV-D 2.2]

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Purpose, Function

•  If the pressure in the common rail exceeds a certain value, fuel is discharged to assure safety.

Construction

•  The fuel pressure relief valve is installed to the common rail.
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•  The fuel pressure relief valve consists of a spring, ball, and plunger.
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Operation

•  According to the control signal from the PCM, the coil is energized and the plunger is operated to open the fuel passage.
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•  The fuel passage opens and the pressure in the common rail flows to the lower case side.
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Fail-safe

DTC

Fail-safe
P009B:00
•  Limits the fuel pressure. (High pressure)
•  Limits the engine torque/limits the maximum engine speed.
•  Inhibits engine-stop by i-stop control.
P009C:00
P009D:00
P009F:00