Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 22 systemci 048krsbw
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KEY REMINDER AND SEAT BELT WARNING
FROM POWER SOURCE SYSTEM (SEE PAGE 52) * 1: W/ DOOR LOCK CONTROL
* 2: W/O DOOR LOCK CONTROL
* 3: W/ VSC
J18 * 4: W/O VSC
JUNCTION
CONNECTOR
D D GR 10A 10A 15A
GAUGE DOME CIG
(* 3)
W- B
A
(*3)
GR
2
GR A A GR
1D
OCCUPANT DETECTION
(* 4) 12 2J 6 1J 2 3
SEAT BELT WARNING
J17
R- W
BUCKLE SW
JUNCTION
P- B
SENSOR
9 A CONNECTOR
3 1W
P
C 9 B , C10 A
FRONT PASSENGER SEAT
SENSOR
SEAT BELT 5 II2
BELT WARNING LIGHT
WARNING LIGHT
S16
[COMB. METER] 1 7
9 B 10 1V 4 P- B
(* 1)
P
P
GR- G
R
[CLOCK]
CONNECTOR
A 2 C C
(BUCKLE SW)
JUNCTION
C8
5
P- B(* 2)
9 IG1 J23
DIODE
J18
A JUNCTION
D26
GR- G
CONNECTOR
1
R
Y- G
(*1)
P
3 1T 2 1M
16 C 9 C (*1)
9 7 1 2 B 3 B (*2)
WRN IG B WRNP PBKL
E DCTY BKL KSW
10 6 8 5 I13 B , I16 C
INTEGRATION
RELAY
8 1J 7 1S 4 1S 5 1M
R- W
L- B
B D
W- B
J21 J6
JUNCTION JUNCTION
CONNECTOR CONNECTOR
B D 6 II2
R- W
W- B
W- B
R- G
7 BG2
L- B
J3 B
B A
R- W
CONNECTOR
JUNCTION
J2 A ,
1 1 1
D16 B17 U1
DOOR COURTESY BUCKLE UNLOCK B B B B
SW FRONT LH SW LH WARNING SW
W- B
2 2
W- B
W- B
W- B
3 BG2
W- B
IJ BK ED
2001 SIENNA (EWD420U)
196
SYSTEM OUTLINE
Current always flows to TERMINAL 1 of the integration relay through the DOME fuse.
1. SEAT BELT WARNING SYSTEM
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 7 of the integration relay. At the same
time, current flows to TERMINAL 9 of the integration relay from the GAUGE fuse through the seat belt warning light. Then, if
the driver's seat belt is not fastened (A retractor SW off signal is input to TERMINAL 8 of the integration relay), the current
flowing through the warning light flows from TERMINAL 9 of the integration relay to TERMINAL 10 to GROUND, and flashe
the warning light. The current flowing to TERMINAL 1 of the integration relay also flows from TERMINAL 10 to GROUND and
the seat belt warning buzzer sounds for approx. 6 seconds. However, if the seat belt is put on during this period (While the
buzzer is sounding), signal input to TERMINAL 8 of the integration relay stops, and the current flowing from TERMINAL 1 of
the integration relay to TERMINAL 10 to GROUND is cut, causing the buzzer to stop.
Additionally, the sensor (Seat belt warning occupant detection sensor) installed on the front passenger seat detects the
passenger and determines whether or not the passenger fastens the seat belt.
If the passenger does not fasten the seat belt, the front passenger seat belt warning light is flashed.
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 6 of the integration relay, the integration relay operates, the
current flows from TERMINAL 1 of the integration relay to TERMINAL 10 to GROUND and the key reminder buzzer sounds.
SERVICE HINTS
D16 DOOR COURTESY SW FRONT LH
1-GROUND : Closed with LH door open
U1 UNLOCK WARNING SW
1-2 : Closed with ignition key in cylinder
INTEGRATION RELAY
10-GROUND : Always continuity
6-GROUND : Continuity with the driver's door open
5-GROUND : Continuity with the ignition key in cylinder
8-GROUND : Continuity with the driver's seat belt in use
1-GROUND : Always approx. 12 volts
: PARTS LOCATION
Code See Page Code See Page Code See Page
B17 38 I13 B 35 J18 35
C8 34 I16 C 35 J21 36
C9 B 34 J2 A 35 J23 36
C10 A 34 J3 B 35 S16 38
D16 36 J6 35 U1 35
D26 34 J17 35
,,, : JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
,,,
,,,
Code See Page Junction Block and Wire Harness (Connector Location)
1D
1J 22 Cowl Wire and Driver Side J/B No.1 (Lower Finish Panel)
( )
1M
1S 22 Floor Wire and Driver Side J/B No.1 (Lower Finish Panel)
1T 22 Instrument Panel Wire and Driver Side J/B No.1 (Lower Finish Panel)
1V
22 Cowl Wire and Driver Side J/B No.1 (Lower Finish Panel)
No 1
1W
2J 24 Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
2001 SIENNA (EWD420U)
197
KEY REMINDER AND SEAT BELT WARNING
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IG1 42 Instrument Panel Wire and Cowl Wire (Behind the Combination Meter)
II2 44 Floor No.2 Wire and Cowl Wire (Right Kick Panel)
BG2 48 Floor Wire and Seat Wire (Beneath the Driver Seat)
: GROUND POINTS
Code See Page Ground Points Location
ED 40 Near the Left Front Suspension Support
IJ 42 Right Cowl Side Panel
BK 46 Under the Left Center Pillar
2001 SIENNA (EWD420U)
198
MEMO
2001 SIENNA (EWD420U)
199
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