Procedures For Writing BMU Learning Value: Notes
WARNING: This page is about a different car, the 2020 Mitsubishi Outlander PHEV. However, it is still accessible from the selected car via links, so may be relevant.
If the BMU is replaced, follow the procedure below to save the values stored in the old BMU and then write them to the new BMU.
CAUTION:
While the scan tool (M.U.T.-IIISE) is communicating with the vehicle, the electric motor switch may not be turned off and no normally. Therefore, when you turn off the electric motor switch for that communication, wait for several seconds and then turn on it again (do not turn on it immediately).
- Connect the scan tool (M.U.T.-IIISE) to the data link connector.
- Turn on the power supply mode of the electric motor switch.
- Select "STV."
- Select "BMU."
- Select the "Special Function" from the BMU Screen.
- Select the "Write learned value (Changed ECU)" from the Special Function Screen.
- Select the "Learned value Read & save" from the Write learned value (Changed ECU) Screen.
- Save the data from the Learned value Read & save Screen. If the BMU learning value cannot be saved, write the BMU learning value manual.NOTE: When the learned value file is normally saved, the "Learned value Save Complete" is displayed on the scan tool (M.U.T.-IIISE) Screen.
- Turn off the power supply mode of the electric motor switch, and then replace the BMU.
- Turn on the power supply mode of the electric motor switch without depressing the brake pedal. 11. Select the "Saved learned value writing" from the Write learned value (Changed ECU) Screen.
- Select the saved data from the Saved learned value writing Screen to write the BMU learning value.NOTE: Use only the BMU learning value file saved in the Step 8. Do not use other files.NOTE: When the BMU learning value is correctly written, the "Completed" should be displayed on the scan tool (M.U.T.-IIISE) screen.
- Turn off the power supply mode of the electric motor switch, and then disconnect the scan tool (M.U.T.-IIISE).