SCN coding with SDflash Office - AR54.21-P-0013-03X

The following work instructions describes the procedure for SCN coding with the "SDflash Online" program.

"SDflash" is the product name of the program used to determine the SCN coding and parameterization data.

"SDflash Office" is the designation of the Office SCN process.

Coding by means of "SDflash Office" is not permissible for the company-owned sales and service outlets of DaimlerChrysler Sales Organization Germany.

Prerequisite for SCN coding with "SDflash Online":

• "SDflash Office" software incl. user rights.
• PC with Intranet and Internet connection incl. CD burner.
• Printer for printout of coding string or CD blank and CD burner for preparing the SCN repair CD.

Entry into the coding in the diagnosis assistant system (DAS) 

1. Select menu item "control unit adaptations" or "initial startup". Continue with "F3".
2. Select the menu item "SCN coding" in the further program sequence. Continue with "F3".

   The program run may differ depending on the control unit.

3. Select menu item "Offline (FDOK, FAX, Office)". Continue with "F3".
4. Confirm note on sequence of SCN coding with "F2".
5. Select menu item "vehicle data for SCN coding". Continue with "F3".
6. Confirmation of the correct vehicle identification number with "F3".
7. Print out vehicle data with "F11".
8. Start "SDflash" program.

   Coding steps in "SDflash Office" 

   SCN coding in DAS can be carried out with 2 different methods:

   • Coding with printed-out coding data
   • Coding with an SCN repair CD to be prepared.
9. Enter vehicle identification number, select category, select control unit category ("engine control unit", "transmission control unit" or "other"). Continue with "F2".
10. In the "Coding" index enter the part number and, if available, the control unit software numbers and check digit 1.

    For control units relevant to exhaust emission the legislator requires a number, the so-called "Software Calibration Number" (SCN). This SCN represents the software release of the control unit. Control units which contain more than one software, form a different SCN for each software, so that more than one SCN is assigned to the complete control unit.

    In order to meet the legislation, a group SCN is formed via all SCNs formed. In this case, the part number which is formed from the object number of the control unit and the control unit software number must be entered in the rows below the row "Control unit software".

11. Confirm entries in the "coding" index with "F3".

    The starts the interrogation of SCN coding data in the central system.

12. Confirm message about successful SCN generation and coding string formation.
13. Use "F11" to print out the coding string, SCN and check digit 2.

    When coding takes place with printed-out coding data.

    Only carry out the following steps 14 to  16 if coding is performed using an SCN Repair CD.

14. Insert suitable blank in the CD-burner. Use "F7" to call up the CD burning program.

    If the CD burning program is called up for the first time, call up this with "F6" "Select burning program".

15. Change into the directory

    "C:\\userdata\\csd\\writefil\\create\\flashfil" with the CD burning program. From there change into the vehicle category directory, then into the model series directory and then into the vehicle VIN/VIN directory.

    Creating a link to the folder

    "C:\\userdata\\csd\\writefil\\create\\flashfil" facilitates access to the subdirectories.

16. Burn all files which are found in this directory onto the CD.

    To ensure that the CD cannot be confused with other CDs, we recommend noting the following information on the CD:

    • CD type: SCN Repair CD
    • VIN: ... (enter the vehicle identification number of the vehicle here)
    • CU object number: ... (enter the object number of the control unit here)
    • Date: ... (here enter the date on which the coding string of the central systems was supplied and burnt onto the CD)

Completion of coding in the DAS 

17. In the menu "Offline (FDOK, FAX, Office)" select the menu item "Carry out SCN-coding". Continue with "F3".
18. 1. Enter the SCN coding data (SCN, coding string and check digit 2). Continue with "F3".

    Only if coding of the control unit is performed using the printed-out coding data.

    2. Insert a finish-burnt SCN Repair CD in the STAR DIAGNOSIS CD drive. Continue with "F3".

       If the coding takes place with the SCN Repair-CD.

19. Start the coding with "F3".

    

20. Print out the order log with "F11" and enclose the repair order.

    The order log can also be stored in STAR DIAGNOSIS. After printing "F11" it is to be specified in the print dialog that printing to file should take place. This takes place by clicking on "print to file", selection of "printout of test step" and giving a file name.

    In "StarUtilities" with the "StarPad" program the order log can be displayed and printed out under the item "log" → "DAS log" → "printout of test step".

    Depending on the control module model the ignition must then be switched on and off again.

    To do this, follow the instructions in DAS.

    When coding the control unit with printed-out coding data, a control unit reset takes place following the coding.

21. Continue with "F2".

    SCN coding of the control unit is thus successfully concluded.

22. After successful coding, destroy the SCN Repair CD as per the guideline for theft-relevant parts (DRT 69/00).

    When coding has been carried out with the SCN-Repair CD. The destruction is to be documented on the repair order.