Dealer ECM Clearing Reference Guide

Part I Clearing ECM (TC Only)

1. ECM Clearing will only work on the following two types of ECMs with their

corresponding suffix codes

A4E2V1: JZ, LA, LC A4E4V2: JV, JW, JX, JY, LS, JL, JM A4E4V3 Suffix Codes: LF, LG, LH, LJ, LK, LL, LM, MC, MD, ME, MF, RA,

RB, RC, RD, RE

2. Navigate to Winflash, Click on Utilities, and choose Clear ECM Memory

3. ECM Clearing will only work on Non-Factory installed ECMs. If you are unsure if

your ECM is factory installed, click Yes and verify in the FPS screen that appears. Otherwise click No to continue with the ECM Clearing. You may also want to record the engine serial number and previously loaded flashfile in case of an issue during

clearing.

4. Load the proper ECM Clearing file in Winflash and flash the ECM. Do not interrupt

power during the clearing process or the ECM may become corrupted.

5. Return to Cat ET

6. The ECM Clearing Screen in Cat ET will appear. Click Clear Memory on the lower left hand side.

7. Click Yes to confirm and continue clearing.

8. You will then be prompted for a Factory Password. Follow your standard procedure

for obtaining passwords.

9. Click OK to confirm that the ECM was cleared.

10. Disconnect from Cat ET. The ECM is now cleared and can be used for another

application. A default interlock code of 43690 has been programmed into the ECM. Be

sure to mark this ECM in some fashion to alert other users that this is a cleared ECM and

will require additional setup.

Part II Set Up Cleared ECM (TC or Technician)

11. In order to use this ECM for another application, you must reconnect to the ECM

with Cat ET. When you reconnect, click the Winflash button.

12. Flash the new application software on the ECM in Winflash.

13. Once the flash completes, return to Cat ET.

14. The Personality Module Mismatch box appears. Click Cancel to continue setting up the ECM for the new application.

15. Navigate to the Configuration screen in Cat ET and program the correct Engine Serial Number for the new application.

16. You must then disconnect and then reconnect to the ECM with Cat ET.

17. The Personality Module Mismatch box appears again. This time click OK.

18. Click OK on the next Personality Module Mismatch box that appears as well, after verifying the new engine serial number is displayed.

19. You will then be prompted for another Factory Password. Follow your standard

procedure for obtaining passwords.

20. Once you have entered the Factory Password the process is complete. The ECM has

now been successfully cleared, reflashed, and had the serial number reprogrammed to the

appropriate new application.

21. Copies of this Procedure can be found on https://dealer.cat.com/FPSdma and

https://dealer.cat.com/catet. For any questions on this process please contact:

Jim Snodgrass o Phone: 1-800-447-4986 (TEEC) o Email: Snodgrass_James_K@cat.com