Learning Procedure

After the ignition switch is in "LOCK" (OFF) position, disconnect the battery cable from the negative battery terminal.
Remove the battery current sensor from the battery cable (Do not disconnect the battery current sensor connector).
Connect the battery cable without the battery current sensor to the negative battery terminal.

Fig 1: Identifying Battery Current Sensor
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Connect the M.U.T.-III to the diagnosis connector (But do not start the engine).
Turn the ignition switch to the ON position.
Select "MFI" from System select Screen of the M.U.T.-III.
Select "Special Function" from MFI Screen.
Select "Learning" from Special Function Screen.
Select "Battery current SNSR.calibration" from Learning Screen.
Start the calibration by pressing the "OK" button.
Confirm that the M.U.T.-III data list item No. 119 Battery current sensor calibration is "Completed".
After the ignition switch is in "LOCK" (OFF) position, disconnect the M.U.T.-III.
Install the battery current sensor.

Fig 2: Connecting Scan Tool To Data Link Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.