Key Reminder Switch: Description and Operation

Current always flows to TERMINAL 1 of the integration relay through the DOME fuse.

1. SEAT BELT WARNING SYSTEM
When the ignition SW is turned ON, current flows from the GAUGE fuse to the TERMINAL 7 of the integration relay at the same time, current flows to TERMINAL 9 of the relay from the GAUGE fuse through the seat belt warning light this current activates the integration relay and, for approx. 4-8 seconds, current flowing through the warning light flows from TERMINAL 9 of the relay to TERMINAL 10 to GROUND, causing the warning light to light up. At the same as the warning light lights up, a buckle SW OFF signal is input to TERMINAL 8 of the relay, the current flowing to TERMINAL 1 of the relay flows from TERMINAL 10 to GROUND and the seat belt warning buzzer sounds for approx. 4-8 seconds. However, if seat belt is put on during this period (While the buzzer is sounding), signal input to TERMINAL 8 of the relay stops and the current flow from TERMINAL 1 of the relay to TERMINAL 10 to GROUND is cut, causing the buzzer to stop.

2. KEY REMINDER SYSTEM
With the ignition key inserted in the key cylinder (Unlock warning SW ON), the ignition SW still OFF and door open (Door courtesy SW ON), when a signal is input TERMINALS 5 and 6 of the relay, the integration relay operates, current flows from TERMINAL 1 of the relay to TERMINAL 10 to GROUND and the key reminder buzzer sounds.