Engines / Diesel / 1.9/74kW TDI-PD AVQ / Test of pump/injector valves

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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 temperature > XX°C (XX - Measured values group XXX, field X)
- engine speed = idling

connect with the control unit XX - engine

XX - Measured values group XXX
required values:
field X = X (injector - cylinder X)
field X = X (injector - cylinder X)
field X = X (injector - cylinder X)
field X = X (injector - cylinder X)

table of errors

XXX = interference with steering during Start
XXX = low injection volume or faulty injector
XXX = maximum current reached
XXX = Start of injection period - outside specifications
XXX = samples too small
XXX = incorrect conversion
XXX = Start of injection period - impossible

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