Lexus SC300 / Lexus SC400. Manual — part 956
201
WIPER AND WASHER
: PARTS LOCATION
CODE
SEE PAGE
CODE
SEE PAGE
CODE
SEE PAGE
C15
B
W 2
C16
A
W 5
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODE
SEE PAGE
JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1H
1J
COWL WIRE
1K
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODE
SEE PAGE
JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IE1
ENGINE ROOM MAIN WIRE AND COWL WIRE (R/B NO. 4)
: GROUND POINTS
CODE
SEE PAGE
GROUND POINTS LOCATION
IF
LEFT KICK PANEL
: SPLICE POINTS
CODE
SEE PAGE
WIRE HARNESS WITH SPLICE POINTS
CODE
SEE PAGE
WIRE HARNESS WITH SPLICE POINTS
I 7
COWL WIRE
202
WIPER AND WASHER
IF
M
1
2
M
1
2
3
6
5
+1
B
+S
+2
OF
F
IN
T
LO
W
/M
IS
T
HI
G
H
WA
SH
E
R
IN
T
T
IME
IE1
4
A
13
A
7
A
14
B
17
B
8
A
6
IE1
3
1K
6
1J
1
1H
16
L
R–L
L–R
L–W
W–B
G–O
L
R–L
G–O
L
L
L
L
L–R
L
L–W
W–
B
W–
B
W–B
WIPER AND WASHER SW (W/ WIPER RELAY)
[COMB. SW]
FROM POWER SOURCE SYSTEM (SEE PAGE 56)
20A
WIPER
WIPER MOTOR
W 5
C15
, C1 6
B
A
WASHER
MOTOR
W 2
WIPER RELAY
I 7
203
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINAL (A)14 OF THE WIPER AND WASHER SW, TERMINAL 2 OF
THE WASHER MOTOR AND TERMINAL 6 OF THE WIPER MOTOR THROUGH THE WIPER FUSE.
1. LOW SPEED POSITION
WITH WIPER SW TURNED TO LOW POSITION, THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW
→
TERMINAL (B)8
→
TERMINAL 3 OF THE WIPER MOTOR
→
TERMINAL 1
→
TO GROUND AND CAUSES TO THE WIPER MOTOR TO RUN
AT LOW SPEED.
2. HIGH SPEED POSITION
WITH WIPER SW TURNED TO HIGH POSITION, THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW
→
TERMINAL (A)7
→
TERMINAL 2 OF THE WIPER MOTOR
→
TERMINAL 1
→
TO GROUND AND CAUSES TO THE WIPER MOTOR TO RUN
AT HIGH SPEED.
3. INT POSITION
WITH WIPER SW TURNED TO INT POSITION, THE RELAY OPERATES AND THE CURRENT WHICH IS CONNECTED BY RELAY
FUNCTION FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW
→
TERMINAL (A)6
→
TO GROUND. THIS FLOW OF
CURRENT OPERATES THE INTERMITTENT CIRCUIT AND THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND
WASHER SW
→
TERMINAL (B)8
→
TERMINAL 3 OF THE WIPER MOTOR
→
TERMINAL 1
→
TO GROUND AND FUNCTIONS.
THE INTERMITTENT OPERATION IS CONTROLLED BY A CONDENSER’S CHARGED AND DISCHARGED FUNCTION INSTALLED IN
RELAY AND THE INTERMITTENT TIME IS CONTROLLED BY A TIME CONTROL SW TO CHARGE THE CHARGING TIME OF THE
CONDENSER.
4. MIST POSITION
WITH WIPER SW TURNED TO MIST POSITION, THE CURRENT FLOWS FROM TERMINAL (A)14 OF THE WIPER AND WASHER SW
→
TERMINAL (B)8
→
TERMINAL 3 OF THE WIPER MOTOR
→
TERMINAL 1
→
TO GROUND AND CAUSES TO THE WIPER MOTOR TO RUN
AT LOW SPEED.
5. WASHER CONTINUOUS OPERATION
WITH WASHER SW TURNED TO ON, THE CURRENT FLOWS FROM TERMINAL 2 OF THE WASHER MOTOR
→
TERMINAL 1
→
TERMINAL (A)13 OF THE WIPER AND WASHER SW
→
TERMINAL (A)6
→
TO GROUND AND CAUSES TO THE WASHER MOTOR TO
RUN. AND WINDOW WASHER IS JET. THIS CAUSES THE CURRENT TO FLOW WASHER CONTINUOUS OPERATION CIRCUIT IN
TERMINAL (A)14 OF THE WIPER AND WASHER SW
→
TERMINAL (B)8
→
TERMINAL 3 OF THE WIPER MOTOR
→
TERMINAL 1 TO
GROUND AND FUNCTION.
C15(B), C16(A)
WIPER AND WASHER SW [COMB. SW]
(A) 6–GROUND :
ALWAYS CONTINUITY
(A)14–GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
(B) 8–GROUND :
APPROX. 12 VOLTS WITH WIPER AND WASHER SW AT LOW OR MIST POSITION
APPROX. 12 VOLTS EVERY APPROX. 1 TO 10 SECONDS INTERMITTENTLY WITH WIPER SW AT INT POSITION
(B)17–GROUND : APPROX. 12 VOLTS WITH IGNITION SW ON UNLESS WIPER MOTOR AT STOP POSITION
(A) 7–GROUND :
APPROX. 12 VOLTS WITH IGNITION SW ON AND AFTER WIPER SW OFF UNTIL WIPER MOTOR STOPS
W 5
WIPER MOTOR
6–5 : CLOSED UNLESS WIPER MOTOR AT STOP POSITION
SYSTEM OUTLINE
SERVICE HINTS
15
ABBREVIATIONS
DISCONNECTION AND CONNECTION OF BOLT
TYPE CONNECTORS
For engine and ECT ECU in this vehicle, connectors are used
which require a bolt built into the connector to be screwed down to
securely connect the connector.
1.
Disconnect the connector
After completely loosening the bolt, the two parts of the
connector can be separated.
NOTICE:
Do not pull the wire harness when disconnecting the
connector.
2.
Connect the connector
NOTICE:
Before connecting the connector, always check that the
terminals are not bent or damaged.
(a)
Match the guide section of the male connector
correctly with the female connector, then press them
together.
(b)
Tighten the bolt.
Make sure the connectors are completely connected,
by tightening the bolt until there is a clearance of less
than 1 mm (0.04 in.) between the bottom of male
connector and the end of female connector.
ABBREVIATIONS
The following abbreviations are used in this manual.
A/C
= Air Conditioning
O/D
= Overdrive
ABS
= Anti–Lock Brake System
R/B
= Relay Block
A/T
= Automatic Transmission
RH
= Right–Hand
CB
= Circuit Breaker
SRS
= Supplement Restraint System
COMB.
= Combination
SW
= Switch
ECT
= Electronic Controlled Transmission
TDCL
= Total Diagnostic Communication Link
ECU
= Electronic Control Unit
TEMP.
= Temperature
EGR
= Exhaust Gas Recirculation
TRAC
= Traction Control
FL
= Fusible Link
VSV
= Vacuum Switching Valve
ISC
= Idle Speed Control
W/
= With
J/B
= Junction Block
W/O
= Without
LH
= Left-Hand
* The titles given inside the components are the names of the terminals (terminal codes) and are not treated
as being abbreviations.
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