Engines / Petrol / MED 17.5.5 CAN general / Test - fuel pressure -high (rail)

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Mark	Model	Control unit	Diagnostic operation

Mark

Select a vehicle make or a common group such as Service Intervals, Engines, Transmissions, Immobilizers and Independent Heaters.

Model

Control unit Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Diagnostic operation Select the desired diagnostic procedure.

Diagnostic procedure

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Conditions:
- engine speed = idling

Note:
- error stored to error memory - PXXXX or PXXXX = fuel tank contents low ??

XX - Measured values group XXX

observe values:
field X = fuel pressure - required value
field X = fuel pressure - actual value

required values:
idling = > XX bar
high rpm = < XXX bar

desired condition field X = field X ± Xbar

upon non--achievement of condition (field X > field X) - check component:
- fuel system - tightness of line
- hipressure pump
- fuel filter

upon non--achievement of condition (field X > field X) - check component:
- pressure sensor (GXXX)
- line
- connector connections

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