Tundra Access Cab SR5 2WD V6-3.4L (5VZ-FE) (2000)
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Seat Belt Reminder Buzzer: Description and Operation
Current always flows to TERMINAL (B) 5 of the combination meter through the DOME fuse.
1. SEAT BELT WARNING SYSTEM
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL (A) 7 of the combination meter. This current activates
the combination meter and the current flowing through the seat belt warning light flows from TERMINAL (A) 12 to GROUND, causing the
warning light to light up. A buckle SW off signal is input to TERMINAL (B) 9 of the combination meter to TERMINAL (A) 12 to GROUND,
causing the warning light to light up. A buckle SW off signal is input to TERMINAL (B) 9 of the combination meter, the current flowing to
TERMINAL (B) 5 of the combination meter flows from TERMINAL (A) 12 to GROUND and the seat belt warning buzzer sounds. However, if
the seat belt is put on during this period (While the buzzer is sounding), signal input to TERMINAL (B) 9 of the combination meter stops and the
current flow from TERMINAL (B) 5 of the combination meter to TERMINAL (A) 12 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 driver's door open (Door courtesy SW
on), when a signal is input to TERMINAL (B) 10 of the combination meter, the combination meter operates, current flows from TERMINAL (B)
5 of the combination meter to TERMINAL (A) 12 to GROUND and key reminder buzzer sounds.