System Outline

Current always flows to TERMINAL 1 of the Seat Belt Warning Relay through dome fuse.

1. SEAT BELT WARNING SYSTEM
When the Ignition SW is turned ON, current flows from the gauge fuse to TERMINAL 2 of the Seat Belt Warning Relay. At the same time, current flows to TERMINAL 5 of the relay from the gauge fuse through the seat belt warning light. This current activates the Seat Belt Warning Relay and, for approx. 4-8 seconds, current flowing through the warning light flows from TERMINAL 5 of the relay --> TERMINAL 6 --> GROUND, causing the warning light to light up. At the same time as the warning light lights up, a buckle SW OFF signal is input to TERMINAL 4 of the relay, the current flowing to TERMINAL 1 of the relay flows from TERMINAL 6 --> GROUND and the Seat Belt Warming Buzzer sounds for approx. 4-8 seconds. However, if the seat belt is put ON during this period (while the buzzer is sounding), signal input to TERMINAL 4 of relay stops and the current flow from TERMINAL 1 of the relay --> TERMINAL 6 --> GROUND is cut, causing the buzzer to stop.

2. UNLOCK WARNING SYSTEM
With the ignition key inserted in the key cylinder (unlock SW ON), the Ignition SW still OFF and door open (door courtesy SW ON), when a signal is input to TERMINAL 3 of the relay, the seat belt warning relay operates, current flows from TERMINAL 1 of the relay --> TERMINAL 6 --> GROUND and Unlock Warning Buzzer sounds.