Engines / Diesel / EDC 17 UDS general / Test - SCR heating - AD-Blue (J891)

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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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Note:
-on-board voltage > XXV

X)

XX - Actuators

select item in drop-down menu:

IDEXXXXX - SCR excitation - heating of block X

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

IDEXXXXX - heating of block X Dosing of the reducing agent: voltage
IDEXXXXX-ENGXXXXXX - heating of block X Dosing of the reducing agent: excitation Bits X-X

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

XX - Actuators - Start

desired condition:
IDEXXXXX-ENGXXXXXX = XX, XX - the value must change according to the actual condition heating of block
IDEXXXXX = X - XXXXmV - the value must change according to the actual condition heating of block

back

X)

XX - Actuators

select item in drop-down menu:

IDEXXXXX - SCR excitation - heating of block X

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

IDEXXXXX - heating of block X Dosing of the reducing agent: voltage
IDEXXXXX-ENGXXXXXX - heating of block X Dosing of the reducing agent: excitation Bits X-X

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

XX - Actuators - Start

desired condition:

IDEXXXXX-ENGXXXXXX = XX, XX, XX, XX…
IDEXXXXX = X - XXXXmV

the value must change according to the actual condition heating of block.

back

X)
XX - error memory
desired condition:

Error memory empty

End of test

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