The Caterpillar Electronic Technician (Cat ET) can be utilized to flash a new personality module into the ECM. The flash is accomplished by transferring the data from a PC to the ECM.
Flash Programming a Personality Module
- Connect Cat ET to the service tool connector.
- Turn the keyswitch to the ON position.
- Select "WinFlash" from the "Utilities" menu on Cat ET.
"WinFlash" will try to detect an ECM.
Note: If "WinFlash" does not detect an ECM, refer to Troubleshooting, "Electronic Service Tool Will not Communicate with ECM".
- When an ECM has been detected, the "ECM Selector" window will appear. Select the appropriate ECM that needs to be flashed and press "OK".
The "Flash File Selection" window will appear.
- The flash files are located on a disk drive and in a directory. Select the correct disk drive and the correct directory from "Drives" and "Directories" on Cat ET.
A list of flash files will appear.
- Select the correct file from the list of flash files. Read the "File Info" and the "Description" in order to verify that the correct file is selected. Select "OK".
Note: SIS Web and Service Technician Workbench can be used to search for the latest flash file by using the engine serial number.
- Select the "Begin Flash" button in order to program the personality module.
When the flash is completed, this message will appear: "Flash Completed Successfully".
Note: If "WinFlash" detects an ECM and "WinFlash" displays "WinFlash error -Communications", refer to Troubleshooting, "ATA (SAE J1587 / J1708) Data Link Circuit - Test".
- Start the engine and check for proper operation.
- If a diagnostic code of 268-02 "Check Programmable Parameters" is generated, program any parameters that were not in the old personality module.
- Access the "Configuration" screen under the "Service" menu in order to determine the parameters that require programming. Look under the "Tattletale" column. All of the parameters should have a tattletale of 1 or more. If a parameter has a tattletale of 0, program that parameter.
If you receive any error messages during flash programming, click on the "Cancel" button in order to stop the process. Return to Cat ET. Access the "ECM Summary" under the "Information" menu. Make sure that you are flashing the correct file for your engine.