RES/DECEL

When the RES/DECEL Switch is depressed, a signal is applied via the RY wire to terminal 4 of the Cruise Control ECU (Z121). This tells the ECU (Z121) to disengage the system and the vehicle slows down. When the switch is depressed a second time, the signal is again applied to the ECU (Z121) and the vehicle returns to the previously set speed.