Self-diagnosis Function
- Press and hold the "SET" button, the "↓ " arrow down button, and the "↑ " arrow up button, then turn the ignition switch to ON (II).
- Release all buttons after 1 second.
- Within 3 seconds, press and release the "SET" button, press and release the "↓ " arrow down button, and finally press and release the "↑ " arrow up button.
- The self-diagnosis function begins with a blank display. Press and release the "↑ " arrow up button to scroll through the three modes.
- Press the "SET" button to exit the self-diagnosis function.