Reset Immobilizer (Reset Immobilizer Control Unit)

Select "Body" and "Immobilizer".
Select "Additional Function" and "Reset Immobilizer".
Enter the security code and press Confirm.
Reset Immobilizer screen shows up with warning.
See the following screen.

Fig 1: Identifying Reset Immobilizer Screen
Courtesy of ISUZU MOTOR CO.
When reset is completed, the following screen shows up.

Fig 2: Identifying Reset Completed Immobilizer Screen
Courtesy of ISUZU MOTOR CO.