Key Reminder System

If the power supply is in the ACC or OFF position and the electrical key is still in the key slot, and the driver's side door is opened, then a signal from the key slot is input to TERMINAL KSW of the body ECU and a signal from the courtesy SW in driver's side is input to TERMINAL DCTY of body ECU. The subsequent signal from the body ECU to the combination meter activates warning buzzer to send a message to the driver that electrical key is still in the key slot.