HARNESS AS- 3784986 - Caterpillar

Programming A Personality Module Using Flash Programming
When you purchase either the FLASH program, LEXT3037, or the CAT ET program, JERD2124, a copy of the most current flash files are included. If you purchase the LEXT3037, you can also purchase the optional flash file subscription. The flash file subscription is NOT available with the purchase of CAT ET (JERD2124). However, the preferred method of obtaining flash files is to download them from the Caterpillar Mailbox. This method requires that you have a fast modem (9600 baud or faster) attached to a PC. The PC communications program Hyper ACCESS 5 (LERQ3133) is also required. Using this method, the latest flash files are available 24 hours a day. Operation of the engine following programming of the Personality Module is identical to operation following replacement of the Personality Module chip. The only difference is the software was already programmed in the chip for you when you replaced the chip, now you are actually performing the programming function. For example, if you are rerating an engine, you will still need Factory Passwords to change the Personality Module Code. The password used for flash programming is "MASTER" unless the operator has changed the original password.1. Connect hardware as shown below.
(1) 7X1412 T-Harness Cable. (2) Personal Computer. (3) 7X1425 PC To Communication Adapter Cable and 4C6805 Adapter. (4) 7X1700 Communication Adapter. Use the 7X1412 T-Harness Cable for Flash Programming.2. Start the LEXT3037 PC Program.3. Select the Personality Module part number to be programmed into the ECM, and proceed with programming the Personality Module. The new ECM is shipped with a blank Personality Module.4. PC Program Personality Module Messages and Their Meaning: A new ECM comes with a blank (previously unprogrammed) personality module. A blank personality module will prompt you for all three of the following messages. The information contained in the "ECM Status" will be scrambled and meaningless if the module has not been previously programmed (this is normal).* Message - "The engine ID in the flash file does not match the engine ID in the ECM." The ECM has a personality module in it for a different engine. Stop the transfer and access information about "ECM Status" under the "Electronic Control Module" menu. Make sure the file you are about to transfer is for the same engine it will be installed in.* Message - "The application ID in the flash file does not match the application ID in the ECM." The ECM has a personality module in it for a different application. Stop the transfer and access information about "ECM Status" under the "Electronic Control Module" menu. Make sure the file you are about to transfer is for the DeNOx application. Message - "The ECM ID in the flash file does not match the ECM ID in the ECM." The ECM is not for use in the DeNOx application. Stop the transfer and access information about "ECM Status" under the "Electronic Control Module" menu. Make sure the ECM on the engine is for the