Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 22 systemci 027rww
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REAR WIPER AND WASHER
FROM POWER SOURCE SYSTEM (SEE PAGE 52)
C14
REAR WIPER AND WASHER SW [COMB. SW]
WR C1R +1R EW
25A WASHER 1
WIPER
OFF
INT
ON
5 1S 4 1C
WASHER 2
12 13 10 2
W- B
P- G
P- B
5 6
L- B L- B 2 1 GR GR
IK5 M IK5
R2
REAR WASHER MOTOR 20 IC2 8 IC2
L
P- G
P- B
R18
REAR WIPER RELAY 2 6
D
C1 LS
D L 3 +B
D J20
JUNCTION
CONNECTOR
L
SM LM
5 4
L- R
LG
1 BB1 2 BB1 3 BB1
L- R
LG
L
A B
8 BD2 9 BD2 10 BD2
J2 A , J3 B
JUNCTION
CONNECTOR
L- R
LG
L
A A
4 3
S +1
R17
M REAR WIPER
L 1 + MOTOR
-
W- B
2
W- B
A
J22
JUNCTION
CONNECTOR
BN IJ
2001 SIENNA (EWD420U)
114
SYSTEM OUTLINE
When the ignition SW is turned on, current flows to TERMINAL 2 of the rear washer motor, TERMINAL 3 of the rear wiper
relay and TERMINAL 1 of the rear wiper motor through the WIPER fuse.
1. REAR WIPER NORMAL OPERATION
With the ignition SW turned on and rear wiper and washer SW turned on, the current flowing to TERMINAL 3 of the rear
wiper relay flows to TERMINAL 6 of the relay to TERMINAL 10 of the rear wiper and washer SW to TERMINAL 2 to
GROUND. Thus, the relay coil is activated and the current to TERMINAL 3 of the relay flows to TERMINAL 4 to TERMINAL
3 of the rear wiper motor to motor to GROUND and causes the motor to operate the wiper.
2. REAR WIPER INTERMITTENT OPERATION
With the ignition SW turned on and rear wiper and washer SW turned to INT position, the current flowing to TERMINAL 3 of
the rear wiper relay flows to TERMINAL 2 of the relay to TERMINAL 13 of the rear wiper and washer SW to TERMINAL 2 to
GROUND.
This causes the motor to operate (The point changes) and the intermittent circuit of the relay operates. Intermittent operation
of the circuit is controlled by the charge/discharge function of the condenser installed inside the relay.
3. WASHER OPERATION
With the ignition SW turned on and the rear wiper and washer SW turned to ON position, when the wiper switch is turned
further, the current flowing to TERMINAL 2 of the rear washer motor flows to TERMINAL 1 of the motor to TERMINAL 12 of
the rear wiper and washer SW to TERMINAL 2 to GROUND, so that the washer motor rotates and the window washer emits
a water spray, only while the switch is fully turned.
When the wiper switch is off and then turned to washer on (Wiper off side), only the washer operates.
SERVICE HINTS
R2 REAR WASHER MOTOR
2-GROUND : Approx. 12 volts with the ignition SW at ON position
1-GROUND : Continuity with washer SW turned on
R18 REAR WIPER RELAY
3-GROUND : Approx. 12 volts with the ignition SW at ON position
2-GROUND : Continuity with rear wiper SW INT position
6-GROUND : Continuity with rear wiper SW ON position
: PARTS LOCATION
Code See Page Code See Page Code See Page
C14 34 J20 36 R17 37
J2 A 35 J22 36 R18 37
J3 B 35 R2 33
,,, : JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
,,,
,,,
Code See Page Junction Block and Wire Harness (Connector Location)
1C 22 Cowl Wire and Driver Side J/B No.1 (Lower Finish Panel)
1S 22 Floor Wire and Driver Side J/B No.1 (Lower Finish Panel)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC2 42 Cowl Wire and Floor Wire (Left Cowl Side Panel)
IK5 44 Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
BB1 46 Back Door No.1 Wire and Floor Wire (Left Rear Quarter Panel)
BD2 46 Back Door No.1 Wire and Back Door No.2 Wire (Left Side of the Back Door)
: GROUND POINTS
Code See Page Ground Points Location
IJ 42 Right Cowl Side Panel
BN 46 Right Side of the Back Door
2001 SIENNA (EWD420U)
115
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