Engines / Diesel / EDC 17 UDS general / Test of filling and atmospheric pressure sensor (G31)

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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 2x.

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Conditions:
- engine speed = idling
- engine temperature = ambient temperature

connect with the control unit XX - engine

Advanced Measured Values

select item in menu:

IDEXXXXX - Absolute value - intake air pressure

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

required values:

intake air pressure = X - XXXX mbar

if values are not achieved:
- engine speed = X rpm
- disconnect from power supply part - intake air pressure sensor. measure resistance between terminals X,X - required values:
X - XV

upon achievement of values: continue

Conditions:
- engine speed = X rpm

Advanced Measured Values

select item in menu:

IDEXXXXX - Absolute value - intake air pressure
IDEXXXXX - Ambient air pressure - atmospheric pressure

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

required values:
Ambient air pressure = atmospheric pressure - actual value

desired condition:

IDEXXXXX = IDEXXXXX ± XX mbar

Picture documentation:

+ G31 - OK

if values are not achieved, check part:
- atmospheric pressure sensor
- intake air pressure sensor
- wiring

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