Engines / Diesel / 1.6/66/77kW TDI-CR CLHx UDS / Test / activation of fuel pump and control relay

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Mark	Model	Control unit	Diagnostic operation

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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

This operation was considered useful 7x.

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Conditions:
- on-board voltage > XXV - connect battery charger
- fuel system - closed
- fuse - fuel pump - OK
- engine speed = X rpm

Note:
- The pump must not run for a longer period without filling, there is a risk of seizure

connect with the control unit XX - engine

XX - Security access

enter value: XXXXX

Start

XX - Basic settings

X)
select item in menu: IDEXXXXX - fuel pump - Test

activate default settings

wait - XXs

basic settings -> Stop

X)
select item in menu: IDEXXXXX - fuel pump - Test

activate default settings

wait - XXs

basic settings -> Stop

X)
select item in menu: IDEXXXXX - fuel pump - Test

activate default settings

wait - XXs

End basic set-up

End of test

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