Toyota 2004 Repair Manual
Seat Belt Warning
From Power Source Syst em (See Page 48
10A
GAUGE
IG2
R–W
3B22 IC7
3B11
R–WL
1
PASSENGER
3
3B16 IL4
R–W
F 7
Front Passenger
Seat Belt
Warning Light
R–W
45
)
1
15A
DOME
2
1
L–WL–WL–W
4C20
4C19
C 9
Combination Meter
A
26
BRBR
4B18
4B21
IE
J 6
Junction
Connector
1211
L–W
IG13IG11
L–W
33
B
24
Occupant
Detection
Sensor
G–Y G–Y
B 6
Buckle SW
B 7
Buckle SW RH
1
W–B
IG14
W–B
Occupant Detect ion S ensor
Buckle SW LH
1
W–B
IG12
W–B
3A15 3A14 3A11
W–B
W–B
A
W–B
IG
J 7
Junction
Connector
Seat
Belt
C
C
1
BRBRBR
II25
EB
J 3
Junction
Connector
172
2004 COROLLA (EWD533U)
System Outline
Current is always applied from the DOME fuse to TERMINAL 5 of the combination meter. When the ignition SW is turned to
ON position, the current from the GAUGE fuse flows to TERMINAL 4 of the combination meter and flows TERMINAL 1 of the
front passenger seat belt warning light.
Seat Belt Warning System
When the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened the
seat belt, a signal is input from the buckle SW LH to TERMINAL 12 of the combination meter. When the seat belt is not
fastened, the seat belt warning light in the combination meter blinks, and emits a warning sound.
In addition, the front passenger is recognized by a sensor (Occupant detection sensor) is installed in the front passenger
seat, and determines whether the seat belt is fastened. When not fastened, the signals from the occupant detection sensor
is input to TERMINAL 11 of the combination meter, and the front passenger seat belt warning light blinks.
Service Hints
B6 Buckle SW LH
3–1 : Open with the driver’s seat belt in use
C9 Combination Meter
5–Ground : Always approx. 12 volts
4–Ground : Approx. 12 volts with the ignition SW at ON position
1–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
B6 34 F7 35 J7 35
B7 34 J3 35
C9 34 J6 35
:
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
:
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IG 25
IL 24
3A
28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3B
4B
30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C
:
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IG1 42 Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH)
:
Ground Points
Code See Page Ground Points Location
EB 38 Left Side of the Cylinder Head
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
2004 COROLLA (EWD533U)
173
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