Engines / Diesel / 1.9/74kW TDI-PD AVQ / Test of air mass sensor

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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

This operation was considered useful 4x.

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Conditions:
- air filter = clean
- intake system - tightness of line

Note:
- observe the occupation safety rules when taking a test drive with connected diagnostics tester

connect with the control unit XX - engine

XX - Measured values group XXX

engine speed = idling

observe values: field X

required values:

field X = XXX - XXX mg/vstřik (actual value - Air mass)

from XXXX rpm, accelerate in Xrd gear to about XXXX rpm - full load

required values:

field X = XXX - XXXX mg/vstřik (actual value - Air mass)

if values are not achieved - field X - check component:

- Intake air mass sensor
- tightness of line
- filling pressure

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