Engines / Petrol / MED 9.1 general / Test / activation of fuel pump and control relay

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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:
- ignition = ON
- engine speed = X rpm

connect with the control unit XX - engine

XX - Actuators

select item: fuel pump

Start

physically test the function of the activated component

desired condition: fuel pump - active / inactive

upon non--achievement of condition - check component:
- fuel pump
- relay for electrical fuel pump
- line

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