System Description

System Diagram:

SYSTEM DIAGRAM

SYSTEM DESCRIPTION

1. KEY REMINDER WARNING SYSTEM DESCRIPTION
a. The key reminder warning system sounds the combination meter buzzer as a warning when: 1) the power switch's power mode is set to OFF or ON (ACC), 2) the key is inserted into the key slot, and 3) the driver side door is opened.




2. FUNCTION OF MAIN COMPONENTS

3. FUNCTION OF DESCRIPTION
a. The key slot transmits a halfway switch status signal to the transponder key ECU. The front door courtesy lamp switch transmits a driver side door courtesy status signal to the multiplex network body ECU.
With the power switch OFF or ON (ACC), 2 conditions are required to activate the key reminder warning system: 1) the transponder key ECU receives a signal indicating that the key is in the key slot, and 2) the transponder key ECU receives a driver side door open signal via the multiplex body ECU. If both conditions are satisfied, a buzzer request signal is transmitted from the transponder key ECU to the combination meter assy via the BEAN. The combination meter assy then actuates the driver circuit to sound a built-in multi-buzzer intermittently.