Engines / Petrol / MED 17.5.2 CAN general / Test of filling and atmospheric pressure sensor

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Mark	Model	Control unit	Diagnostic operation

Mark

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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 = X
- engine temperature = ambient temperature

connect with the control unit XX - engine

XX - Measured values group XXX
observe values:
field X = actual value (atmospheric pressure (FXX))

XX - Measured values group XXX
observe values:
field X = filling pressure (GXX)

desired condition:
XX - Measured values group XXX field X = XX - Measured values group XXX field X ± XX mbar

upon non--achievement of condition - check component: atmospheric pressure sensor, filling pressure sensor, line

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