Technical Description (Comment)
WARNING: This page is about a different car, the 2004 Mitsubishi Galant. However, it is still accessible from the selected car via links, so may be relevant.
If the encrypted code register mode cannot be set, the input circuits from the switches described in "CIRCUIT OPERATION " or the ETACS-ECU may be defective.
If the encrypted code register mode can be set but the transmitter cannot be registered, the transmitter or the ETACS-ECU may be defective.