Tundra Access Cab SR5 4WD V8-4.7L (2UZ-FE) (2001)
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Seat Belt Reminder Lamp: Description and Operation
KEY REMINDER AND SEAT BELT WARNING
SYSTEM OUTLINE
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.
