文档介绍：SEAT BELT – SEAT BELT WARNING SYSTEM SB–1
SEATRESTRAINTS BELT BELT WARNING SYSTEM
PARTS LOCATION
CLOCK ASSEMBLY:
FRONT PASSENGER SEAT BELT WARNING LIGHT
COMBINATION CENTER AIRBAG SENSOR ASSEMBLY
METER ASSEMBLY
- DRIVER SIDE SEAT
BELT WARNING LIGHT
REPAIR
SB
TOYOTA
MAIN BODY ECU
(INSTRUMENT PANEL J/B) FRONT SEAT INNER BELT
ASSEMBLY (FRONT RH)
- GAUGE NO. 2 FUSE
FRONT SEAT INNER BELT
ASSEMBLY (FRONT LH)
B137076E01
SB–2 SEAT BELT – SEAT BELT WARNING SYSTEM
SYSTEM DIAGRAM
F1
Combination Center Airbag Occupant Front Seat Inner
Meter Assembly Sensor Assembly Detection ECU Belt RH
CANH CANH BSW
9
P/BE
CANL CANL BGN
FSP+ FSR+
Front Seat Inner
Belt LH
FSP- FSR- Road Sensor FL
DBE+ SV1
REPAIRSIG1
DBE- Road Sensor RL SGD1
SV3
SB SIG3
SGD3 Road Sensor FR
SV2
TOYOTA SIG2
F3
Clock Assembly Road Sensor RR SGD2
10
PBEW SV4
3 from GAUGE
IG SIG4
No. 2 fuse
19
GND1 SGD4
: CAN
B137075E01
SEAT BELT – SEAT BELT WARNING SYSTEM SB–3
SYSTEM DESCRIPTION
1. Driver seat belt warning light
(a) When the driver seat belt is not fastened with the
ignition switch on (IG), the driver seat belt warning
light on bination meter es on
to inform the driver. The center airbag assembly
detects the driver seat belt status and sends signals
to bination meter assembly using CAN.
2. Passenger seat belt warning
(a) When the passenger seat belt is not fastened with
the ignition switch on (IG) and the passenger seat
occupied, check that the passenger seat belt
warning light on the clock display blinks. The
combination meter assembly displays the
passenger seat belt status and whether the
passenger seat is occupied.
REPAIR
SB
TOYOTA
SB–4 SEAT BELT – SEAT BELT WARNING SYSTEM
HOW TO PROCEED WITH
TROUBLESHOOTING
HINT:
• Use the following procedures to troubleshoot the seat belt
warning system.
•*: Use the intelligent tester.
1 VEHICLE BROUGHT TO WORKS