FUEL PRESSURE RELIEF VALVE [SKYACTIV-D 1.5]

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Purpose, Function

•  The fuel pressure relief valve discharges fuel to control the pressure in the common rail at the target value.

Construction

•  The fuel pressure relief valve is located in the common rail.
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•  The fuel pressure relief valve consists of the spring, ball, and push rod.
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Operation

•  The coil is energized and the push rod is operated to open the fuel passage according to the control signal from the PCM.
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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 No.

Fail-safe function
P0087:00
•  Inhibits the EGR control.
•  Increase the idle speed.
•  Inhibits the auto DPF regeneration control.
•  Inhibits the compulsory DPF regeneration control.
•  Inhibits engine-stop by operating the i-stop function.
•  PCM restricts engine-transaxle integration control. (ATX)
P0088:00
•  Inhibits the EGR control.
•  Inhibits the auto DPF regeneration control.
•  Inhibits the compulsory DPF regeneration control.
•  Inhibits engine-stop by operating the i-stop function.
•  PCM restricts engine-transaxle integration control. (ATX)
P0089:00
•  Limits the engine torque.
•  Limits the upper limit of the engine speed.
•  Inhibits engine-stop by operating the i-stop function.
•  PCM restricts engine-transaxle integration control. (ATX)
P009E:00
P009F:00
P009B:00
•  Inhibits engine-stop by operating the i-stop function.
P009C:00
P009D:00