[2022] MTU DiaSys 2.74 Diagnostic Software Installation Service



MTU DiaSys is designed to diagnosis for MTU engine controllers.You are able to use to do perform maintenance and service function,include reading and recording measurement values/process variables.

Note:After payment,the download link will show on page,if you can not get it,pls contact on Whatsapp or


MTU DiaSys 2.74 Features:




No need USB dongle,easy to use

OS Requires:Win7,Win8 and Win10

Compatible diagnostic kit:MTU Diagnostic Tool USB-to-CAN

License unexpired

Price only for ONE PC Installation and activation

My team will install MTU DiaSys 2.74 and related driver for MTU IXXAT USB to CAN diagnostic adapter configuration,you need to it by yourself


MTU DiaSys 2.74 Function

Data exchange with the central database;

Controller parameter setting;

Data recording.


MTU DiaSys 2.74 Support Models/Units:



ECU-183 & LOP 5 & LOP 7








ECU-7 Diesel

ECU-7 Gas

ECU-8 Diesel

ECU-8 Gas

ECU-9 Diesel

ECU-9 Gas

ECU-9 Bergen Diesel

ECU-9 Bergen Gas






MTU DiaSys 2.74 Video Show:


MTU DiaSys 2.74 Update Information:


1. Transfer data by file – Export:
The data is now exported to a file with the extension *.7z.
The previously used self-extracting executable code (*.exe) is no longer included since DiaSys 2.73.
Since the file is no longer executed since DiaSys 2.72 but unpacked directly when importing DiaSys (see point 3. in modifications 2.71 -> 2.72) the code is no longer necessary.
Advantage: This way the file is no longer blocked by the virus scanner.

2. Transfer data by file – Import:
It is now possible to import files with the extension *.exe as well as *.7z.
This means that data exported with DiaSys 2.73 and with 2.74 can be imported and there is compatibility between DiaSys 2.73 and 2.74.

3. Bug in baud rate detection fixed:
In baud rate detection, DiaSys always detected 125kBaud on CAN 2 regardless of the actual baud rate. This could lead to massive CAN bus disturbances.
DiaSys 2.74 now detects the actual baud rate on CAN 2.

4. EIM:
When using the EIM as BDM client, it could happen after successfully loading the EIM with new FSW and Parameterset,
that the communication between EIM and DiaSys is aborted with an error message during data upload and thus the EIM was not programmable.
This behavior is now fixed.

New features:

1. MCS5: When DiaSys connects to a SAM (or any other MCS5 device), it returns the number of all parameter values.
This number is now compared by Diasys 2.74 with the number of parameter values from the unit’s assembly description DiaSys.dat.
If the number does not match, the DiaSys.dat is certainly the wrong one. The connection establishment is then aborted with a corresponding error message.
No malfunction can occur due to incorrectly changed parameter values.

2. ECU9, SXU: Table of contents of autolearn maps and reset functions:
If supported by the functional software of the ECU, all available autolearn maps and reset functions are transmitted from the ECU to DiaSys.
New maps and reset functions are therefore no longer linked to a new DiaSys version.

3. DiaSys supports the “Service Mode” from version 2.74. For more details about the “Service Mode” please refer to the corresponding documentation or training material.

4. ECU9, SXU: DiaSys now supports the new error memory “mirror memory”. For more details, please refer to the relevant documentation or training material.


MTU DiaSys 2.73 Update Information:


1.IXXAT USB-to-CAN V2: Older firmware versions of the IXXAT interface USB-to-CAN V2 (professional and compact) may lose CAN messages.

To prevent this, the current IXXAT firmware 1.07 have to be installed.

Instructions can be found under C:\Program files (x86)\DiaSys\Doku\IXXAT\usb-to-can V2 Firmwareupdate_howto.pdf


2.The Excel format for Excel export has been changed from *.XLS to *.XLSX

This is due to the increased problems with virus scanners, which classify Office files, which may contain macros, as unsafe.

ATTENTION: The Excel import still only works with XLS files

–> If an XLSX file must be imported, it must first be converted into an XLS file using Excel.

Otherwise an error message will be displayed during the import: “The external table does not have the expected format.”


3.ECU-9, SXU, EXU roles: “Chronological error log” has been extended by the columns “Detail information” and “Detail number”.

Here more detailed information about an alarm/error is displayed (if available).

4.ECU-9, SXU: Bag learning maps (NTE-Events Lifetime xxx) are fed back to the central database as operating data analogous to load profile, error memory, etc.

5.Possible message texts when fetching data from the central database have been improved

6.ECU-9, SXU: New recording templates added to template database TemplateKD.mdb

7.Data transfer by files – export: The data will still be exported as one file with the extension *.EXE.

However, the self-extracting executable code is no longer included.

Since DiaSys 2.72 the file is no longer executed but is directly unpacked when importing DiaSys (see point 3. under changes 2.71 -> 2.72) the code is no longer necessary.

Advantage: The file is no longer blocked by the virus scanner.

8.Data transfer by files – import: During import no more errors occur if the path to the data to be imported contains spaces.

9.Change of the message text if it is detected during the connection to the ECU that the crash recorder is blocked.

Background: Crash recorder data have to be transmitted to MTU.

10.Increased timeout for communication with EIM. This results in fewer error messages in DiaSys when communicating with an EIM.

11.The default path to load profile data has been changed from “A:\” to “C:\ProgramData\DiaSys\Loadprofile_data”. The default path can be changed under “Options”.


New features:

1.ECU-7, ECU-9: New function “Plants project identification”: Reads out and displays PU-run information from the ECU.

2.ECU-9, SXU: PV recorder “Emission Status”: Reads out and displays emission status information from the ECU.

3.SXU: PV-Recorder General: Reads out the configurable PV recorder from the ECU and displays it.

4.EXU-ESD: Injector wear Upload and Export: Reads out information from the ECU injector wear and exports it to a CSV file.

5.SXU: Support of crash recorder functionality analog to ECU-7/8/9.

6.ECU-9, SXU: New function “hot shutdown counter resetfunction”.

7.ECU-9, SXU: New function “NH3 HC count resetfunction”.

8.ECU-9, SXU: New function “HC1 and HC2 load resetfunction”.

9.ECU-7, ECU-9: Information about logged emergency starts are read out from the ECU and displayed .

10.EXU-EMU9: New function “Splash oil calibration”

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