Diesel Data: Automotive Repair

B. Reprogramming the HV ECU





1. Connect a charger to the battery to assure that the battery voltage is consistently above 11.3 volts. (Use the slow charge setting.)

2. Select "3. UPDATE ECU CAL" from the "ECU REPROGRAM" main menu.





3. Select "1: IN-SERVICE ECU" from "UPDATE ECU CAL SELECT ECU TYPE" menu.





4. Confirm the following before proceeding:

^ IG is "OFF." Push the "POWER" switch without depressing brake pedal until the indicator lamp is not lit.

^ Engine hood is opened.

^ All electrical accessories are OFF (i.e. audio systems, dome lamp, navigation system, air conditioner, etc.)

^ The parking brake is applied.

5. Press the "YES" key.





6. Confirm that the diagnostic tester displays the appropriate vehicle type.

7. Press the "ENTER" key.





8. Confirm that the diagnostic tester displays 899834708601 or later.

NOTE:
If the diagnostic tester displays "YES" instead of "NO", the HV ECU has been reprogrammed already. Press the "EXIT" key and turn off the diagnostic tester. Proceed to Step VI, SSC Completion Label Installation.

9. Press the "ENTER" key.





10. Select the current matching calibration ID that is currently on the vehicle.

11. Press the "ENTER" key.





NOTE:
If you select the wrong calibration ID, the diagnostic tester will display the screen shown to the left. Please select the correct calibration ID again after pressing the "ENTER" key.





12. Push the "POWER" switch twice without depressing the brake pedal and confirm that the hybrid system is "IG-ON."

NOTE:

^ Do not start the hybrid system, if the "READY" light is on.

^ Confirm that the power switch indicator is amber in color.





13. Press the "YES" key.

NOTE:

Do not do anything that would cause an electrical load to the vehicle after pressing the "YES" key.





WARNING:

^ The progress bar will display after approximately one minute.

^ It will take approximately 17 minutes to complete the reprogramming.

^ During the reprogramming, do not touch the diagnostic tester and the cable in order to avoid reprogramming failures.

^ If the error screen is displayed during this step, confirm the following:

^ The battery voltage is above 11.3 volts. Connect a charger to the battery if it is not. Use the slow charge setting.

^ Confirm that the power switch indicator is amber in color.

^ The diagnostic tester is firmly connected to the DLC connector.

^ During this time, the cooling fan may come on.





14. After approximately 17 minutes, the diagnostic tester will display the illustrated screen.

15. Push the "POWER" switch until the indicator lamp is not lit.

16. Press the "ENTER" key





17. Confirm that the diagnostic tester displays both "899834708601" (or a newer calibration) and "YES."

18. Press the "EXIT" key.





19. Press the "YES" key.





20. The diagnostic tester is currently confirming that the CAN interface module has been updated.





21. Select "2. CURRENT ECU CAL" from the "ECU REPROGRAM" main menu.





22. Confirm that the diagnostic tester displays the correct calibration ID: 899834708601 (or a newer calibration).

23. Press the "ENTER" key.

24. Turn off the diagnostic tester.

25. Push the "POWER" switch once without depressing the brake pedal to turn ignition off.

26. Clear any DTC codes that have been set.