Engines / UDS Engines by part number / 01 - Engine [EV_ECM20TDI01105L906022Q 007003] / Test: Reducing agent SCR - Efficiency

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Mark

Select a vehicle make or a common group such as Service Intervals, Engines, Transmissions, Immobilizers and Independent Heaters.

Model

Part 1 of the order number Select the first three characters of the order number of the engine control unit. This number can be found in the VCDS when linked to the uniform in the SW order number field. Do not insert the ordering number from the control unit packaging here!!!

Select the first three characters of the order number of the engine control unit. This number can be found in the VCDS when linked to the uniform in the SW order number field. Do not insert the ordering number from the control unit packaging here!!!

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 = idling
- engaged gear = N
- activate the hand brake
- Reducing agent Concentration = OK

Note:
- duration approx XX minutes

connect with the control unit XX - engine

XX - Security access

enter value: XXXXX

Start

XX - Basic settings

select item in drop-down menu:

IDEXXXXX - Test: Reducing agent SCR - Efficiency

activate default settings (duration approx XX minutes)

follow the diagnostics instructions (depress and hold accelerator pedal + brake pedal)

duration approx XX minutes

desired condition:

basic settings: Successfully completed

if values are not achieved, check part:

- Dosing of the reducing agent: Check the leakproofness of the lines
- Dosing of the reducing agent: injector - tightness, Defect
- Dosing of the reducing agent: additive pump - Defect

End of test

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