Engines / Diesel / EDC 17 UDS general / Check the leakproofness of the lines AdBlue - SCR CFFx

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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 speed = X rpm
- parking brake = ON
- automatic transmission = N or P
- Error memory empty

Note:
The control unit shall increase and reduce the pressure of the reducing agent. Visually check the system for leaks

connect with the control unit XX - engine

XX - Security access

enter value: XXXXX

Start

XX - Adaptation

select item in menu: IDEXXXXX - adaptation - Quantity measuring unit

TIP! For easier search in the menu, enter the code IDE, ENG or MAS into the "Filter" window

new value -> enter value: XX

Start

XX - Basic settings

select item in menu: IDEXXXXX - Test - Quantity measuring unit SCR

Start

Note:
The control unit shall increase and reduce the pressure of the reducing agent. Visually check the system for leaks

In the Basic Settings window, click Measured values and select the items you want to visualize.

select item in menu:

IDEXXXXX-ENGXXXXXX - Reducing agent - regulator valve
IDEXXXXX - Reducing agent -pressure sensor - actual value
IDEXXXXX - Reducing agent - additive pump - excitation

TIP! For easier search in the menu, enter the code IDE, ENG or MAS into the "Filter" window

desired condition

IDEXXXXX - Reducing agent - additive pump - excitation
required value = X - XX %

IDEXXXXX-ENGXXXXXX - Reducing agent - regulator valve
IDEXXXXX - Reducing agent -pressure sensor - actual value

required values:
X = Pumping - ON -> X.X bar
X = Pumping - back -> X.X - X.X bar

if values are not achieved, check part:
- Reducing agent - wiring (tightness? clogged?)
- additive pump
- check of error memory

back

XX - Basic settings - Stop

end

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