Initialization Of Diagnosis Multiplexer Failed C4

Customer Problem: When i connected SD Connect C4 with my computer, it showed white 00 connection status at the bottom right corner. A message prompted “Initialization of diagnosis multiplexer failed.” Do i need to initialize the device?

Cardiagtool.co.uk engineer solution:

Nov 08, 2016 Here is the mbstartool.com engineer solution to MB Star C3 V2015.9 up DAS Xentry multiplexer initialization failed problem. Diagnosis multiplexer failed. Multiplexer: SD connect C4. Operation system: Windows 7. Version: DAS version 2018.07 upgrading to version 2018.09. The error: Fault (1.2)-2.503.9901. Initialization of diagnosis multiplexer failed. Possible causes. The link between the diagnosis multiplexer and the diagnosis socket is interrupted.

  1. Files c32s.dll and CAL 872 fix can solve Xentry/DAS Fault(1.2)-2.503.13003 “Initialization of diagnosis multiplexer failed”, said users with Chinese STAR C3 diagnostic tool.
  2. Initialization of diagnosis multiplexer failed Possible causes: The link between the diagnosis multiplexer an the diagnostic socket is interrupted The link between the diagnosis multiplrxer an the diagnostic unit is interrupted. The voltage supply at the diagnostic socket (circuit30 and(or) circuit31)is fault.

The prompt indicates that you need to update MB SD C4 firmware, not initialization.

Here is the firmware update guide:

Step 1: Please prepare all the tools below:

Note:If your tool is MBSD C4 PLUS (Item No. SP100-E), you don’t need to install battery again, because the batteries have been installed in the device before delivery.

1). SDconnect C4 multiplexer which need to input the batteries

2). 6 units Ni-MH rechargeable batteries (size: AA, Voltage:1.2 V, Capacity: 1700mA above)

3).1 unit 108M WIFI card

4).Plum screwdriver, specification: T-20

Step 2: Take out the rubber

1).Use the T20 Plum screwdriver to take out the screws as below.

2).Take out the rubber as below

Note: No.1 is Batteries space, No.2 is WIFI card space, No.3 is SD card space

Step 3: Insert the rechargeable batteries

1).Use the T20 plum screwdriver to take out the screws of batteries space fixation as below

2).Take out the fixation of batteries space. Pay attention to the battery polarity marked in the batteries space

3).Insert the batteries (Note the battery polarity)

4).Button on the Fixation of batteries space after inputting the rechargeable batteries

5).Use the T20 plum screwdriver to fix the screws of batteries space fixation

Initialization of diagnosis multiplexer failed c4 test

Inserting the batteries is finished!

Step 4: Install WIFI card

Note:If the MB SD C4 device you received has installedthe Wifi card, please ignore this step.

1).Insert the WIFI Card into the WIFI Card Space

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Please make the correct direction

2).Push it to make it totally connected

3).Cover the rubber and fix the screws to finish all the work

Step 5: Connect SD C4 Diagnostic tool to your computer via green Lan cable, and then connect SD C4 to your vehicle via OBD cable

Note: if OBD cable cannot connect, you can use OBD 12V power supply to instead of it.

Step 6: Open DAS software, go to C:programm filesSDconnect Toolkit folder to check if there are three files incl. Update_ automatic, Update_ manual and Update_ Special.

Note: If the file name is Update_ automaticx, Update_ manualx and Update_ Specialx, please change them to correct one.

Step 7: Restart your computer

Initialization Of Diagnosis Multiplexer Failed C4 Code

Step 8: Start to update firmware

1).Right-click on the lower right corner of the computer, select administration, and then select Software update

Initialization Of Diagnosis Multiplexer Failed C4

Initialization Of Diagnosis Multiplexer Failed C4 Panel

2).Mainly upgrade three files, as shown below, upgrade order 02 -CSD-2-11.zip-> 01 -> 03

Then it can work again

Initialization Of Diagnosis Multiplexer Failed C4 And C

Tech support: www.cardiagtool.co.uk

Initialization Of Diagnosis Multiplexer Failed C4 Transmission

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