A. Explanation of the Determination Process

The purpose of the determination process is:

^ Identify the proper replacement program or part number to be installed.

^ Store in the MODIC memory data from the currently installed program (example -Chassis Number).

A determination can be performed in two different ways, using either the automatic or the manual process. The automatic determination is the preferred method as it is faster and mistakes during data entry into the MODIC are avoided.

1) Automatic determination (preferred)

During the automatic determination process the MODIC compares the part numbers stored in the EEPROM of the currently installed DME engine control module with a list of possible replacement part numbers stored in the MODIC's memory. The comparison is done to:

^ Determine if the MODIC can "recommend" a replacement part number(s) from the list of part numbers stored in its memory.

^ Identify a proper replacement program or control module.

2) Manual determination

A manual determination must be performed if the MODIC can not access the data of the installed EEPROM or if the MODIC can not find a proper replacement to recommend for installation.

During a manual determination you will need to:

^ Enter the part number for a basic (programmable) control module

^ Enter the VIN of the vehicle

^ Enter the part number of a programmed control module

The required part numbers are usually located on the cover of the installed control module or on the identification screen of the tester (see Section C). Once the correct numbers are entered the MODIC searches its memory for the proper replacement part number(s) and will display either that part number or the message "For the part number programmed control unit________no data available in program."

If the message "For the part number programmed control unit _______no data available in program" is displayed by the MODIC, please check the troubleshooting and programming hints (section B & C) of this attachment before contacting the Technical Hotline for further instructions.

3) Determination procedure considerations

Once the determination of the proper replacement part number(s) is made by the MODIC, a list of replacement control module part numbers is displayed on the MODIC screen.

You should only obtain a replacement control module if the module is found to be defective.

If the module is not defective it can be reprogrammed/updated (13 times) by continuing with the programming procedure and selecting "2. Program basic control unit".

NOTE:
You will overwrite the identification data stored in the MODIC's memory if any additional work is performed prior to programming/updating the currently installed or replacement control module. Any work for example, like reading out fault data or programming/coding another vehicle with this MODIC will clear the replacement data previously obtained. Once the data is cleared programming can not be performed and you will need to repeat the determination process.

If the replacement or currently installed module does not match the part number(s) displayed and "expected" by the MODIC, programming will not occur. You need to obtain the proper replacement part.

At no time during the determination or programming process should you turn off the ignition, disconnect the control module or MODIC.

After programming is complete, print out the new labels and affix one label on top of the old DME label; attach the other to the repair order.