Engine/Transmission Controls - SCN Coding
Date: October 2004Order No.: S-B-07.61/38f
Supersedes: S-B-07.61/38e dated August 2004
Group: 07
Revision:
This bulletin contains a revision to the illustrations and process
All MODELS, AS OF MODEL YEAR 2003
SUBJECT:
SCN CODING OF ENGINE AND TRANSMISSION CONTROL MODULES
A. INTRODUCTION
B. PROCESS OUT LINE
C. OBTAINING USER ID AND PASSWORD FOR ONLINE SCN CODING
D. INSTALLATION OF ON-LINE SOFTWARE APPLICATION
E. GENERATING SCN CODES
Note:
Information Only
A. INTRODUCTION
As of model year 2003, a new coding method is required in the event an engine control module or transmission control module is replaced or flashed. The emission regulations require that all codeable (emission-relevant) electronic control modules have a Software Calibration Number (SCN) which uniquely identifies the control module version installed in the vehicle. This process has been created to prevent incorrect coding of electronic control modules.
The SCN Code is comprised of a multiple digit/character coding string, an SCN and a check digit. It is created using the VIN based factory specification data for the vehicle in addition to the part number of the ECM replaced or flashed. It identifies both the control module software as well as the coding conforming to the specific vehicle.
SCN Codes will now be able to be generated by authorized dealership personnel via any computer with internet access or any NetStar Terminal. This will be possible by the user accessing a secured website utilizing a log-on and password unique to the user. The user then will be able to generate an SCN Code using vehicle data as well as data from the replaced/flashed ECM.
This revised process will be referred to as the "on-line procedure" and will provide faster service for the dealership personnel. This "on-line procedure" will replace the currently used "interim solution" which utilized email based requests for SCN Codes. The email based "interim solution' will be replaced by the "on-line procedure" on April 30 2004.
B. PROCESS OUTLINE
The "on-line procedure" specified in this SI is divided into three parts: obtaining a User ID and Password, accessing the website and installing the program on the user's computer, and generating an SCN Code.
Obtaining a User ID and Password -
In order to obtain a User ID/Password the requestor must fill out the form that is shown. This form must be approved and signed by the Service Manager and then must be faxed to MBUSA using the number provided on the form. This form will then be checked and approved by MBUSA and sent to the account administrator at DCAG. Once received by DCAG, the User account will be created and the User ID/Password will be e-mailed to the requestor directly from DCAG. This process is to ensure that only authorized personnel obtain User IDs as well as to maintain security.
^ Please refer to subject C for instructions on obtaining User ID and Password.
Note:
^ Each dealer may obtain as many User IDs and Passwords as they require as long as a signed form is submitted for each.
^ This process of obtaining a User ID/Password may take up to a week to complete depending on volume of requests.
^ MBUSA will retain all Registration Forms submitted via fax. However for security reasons, MBUSA will have no record of User Accounts activated by DCAG or User IDs and Passwords that are emailed from DCAG to the requestor.
Accessing the website and installing the program -
This procedure can only be performed after a User ID and Password has been obtained. The user will enter the Flash Website URL (listed in the body of this SI) into their web browser from any computer with internet access. Access is also possible from any NetStar Terminal by selecting the SCN Coding' menu found under the Service' tab. The User ID and Password will allow access to the website and by following the procedure detailed in the body of the SI the download the program will occur automatically.
^ Please refer to subject D for instructions on installing the 'on-line process' software on any PC with internet access or on your NetStar PC.
Note:
^ Some minor PC configuration may be required in some cases, this configuration information is contained within the body of the SI.
^ The program is large in size and internet/NetStar users with speeds less than 128 kbps should perform the download after normal working hours to ensure that the download is successful.
^ The program will automatically install the first time the website is accessed, any updates to the program will automatically install in the future
Generating an SCN Code -
This procedure can only be performed after a User ID and Password have been obtained and the 'on-line process' software has been downloaded. In order to obtain an SCN Code you must have the full VIN of the vehicle as well as the correct part number, MB Number or MB Object Number (number required is dependant on type of ECM) of the ECM that you wish to obtain an SCN Code for. This ECU part number, MB Number, or MB Object Number can be identified by STAR Diagnosis using the Control Unit Version' menu selection. Follow the procedure outlined in the body of the SI in order to obtain an SCN Code.
Note:
^ ME-SFI & NAG1 ECMs use the MB Number or the part number in order to generate an SCN Code.
^ 722.9/NAG2 ECMs use the MB Object Number in order to generate an SCN Code.
Please refer to subject E for procedure of how to generate an SCN Coding using this application.
Technical Support -
C. Obtaining User ID and Password for Online SCN coding.
1. Please check with your Service Manager or Workshop Foreperson to see if a User ID and Password has already been issued to your workshop. If one has already been established for your workshop please proceed to Section D.
2. Fill out and fax a signed copy of the SCN On-line User Registration Form Fax the Form to MBUSA at (201) 573-4335.
D. Installation of On-line Procedure Software Application
System requirements:
Pentium II processor or better
Mm 64 MB RAM
50 MB free hard drive space
One of the following operating systems:
Windows NT
Windows 98 (second edition)
Windows XP
Windows 2000
1. Download the SD flash Online program from the DCAG flashen web site: Type in the following URL into your internet browser address box (Figure 1) and save as a favorite:
:http://starnetwork-edc.daimlerchrysler.com/flashen Or follow the NetStar link 'SCN Coding' found under the 'Service' Tab (Flashen home page will open) Select < starter applet > (Figure 1) to begin installation.
2. With access over the Internet a universal Username/Password combination must be utilized. (Figure 2)
Please enter in the following:
^ User name: flashen
^ Password: starnetwork
Note for some PC users:
If your browser has the option to save passwords, please activate this option so that the password does not have to be entered every time you log on
Note for some PC users:
In the case that just a blank grey box appears without any further system progress it might be caused by the JAVA settings of your PC Internet browser. (Figure 3)
^ JAVA has to be activated in your Internet Explorer:
> MenuBarIE
> Extras
> Internet Options
> Advanced
> MicrosoftVM
> JAVA...(please activate all of the JAVA check boxes, your Internet Options window may vary slightly from Figure 3 example)
Note for some PC users:
The following security warning box may appear.
Select
This step may be required each time you access DCAG Flashen web site.
3. Launch and install program Select < Click to start > (Figure 5) to continue installation. Program will load anywhere from 1 to 20 minutes depending on your connection speed.
Note:
It is suggested that if your connection speeds are 128 kps or less that you perform the initial download of the application after business hours to ensure that the application download is successful.
Note:
The DOS-dialogue box (Figure 6) will open. Do not close this box, you may minimize this box if you desire. The DOS-dialogue box will run the entire time in the background and task-bar. If this box is closed the program will not work and the user must log-in again.
4. Enter user ID and Password into log in box.
Click on
Note:
Continue to subject E to generate SCN Codes.
Note:
If "Password Has Expired" or "Password Will Expire Soon" message appears, type in password again and click "Change Password". Then change your password using the screen provided.
E. Generate SCN Codes
1. Click on < Coding > button on the top of the window (Figure 8).
2. Enter data into required fields (Figure 9).
(A) Enter VIN into "Vehicle Identification Number" window.
(B) Enter PKW in the "Category" box.
(C) Click on the control unit you wish to generate an SCN Code for.
(D) Click on the button < F2 Enter Control Unit Number >.
(E) Enter the Part Number or MB Object Number of the control unit. (Figure 10)
(F) Enter the Check Digit [1]. (Figure 10)
(G) FOR ENGINE 272 ONLY - Enter in the "Control Unit Software" (MB Object Number DATA & CODE) numbers.
Note:
Check Digit [1] and the "Control Unit Software" (MB Object Number DATA & CODE) numbers are generated by the Star Diagnosis System using the "Determine Vehicle Data For SCN Coding" menu selection.
3. Generate SCN Coding Information. (Figure 10)
(H) Click < F3 Query > button.
4. Display SCN Coding Information. (Figure 11)
(I) Click the < OK > button.
(J) SCN Coding Information will then be displayed.
(K) Click on
Note:
For CVN redocumentation information and process, please refer to S-B-07.08/43a, 27.00/41a.