Toyota AT180 Series Repair Manual page 109

SYSTEM OUTLINE
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS TO TERMINAL 2 OF THE REAR WASHER MOTOR, TERMINAL 1 OF THE
REAR WIPER MOTOR AND RELAY 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 1
OF THE REAR WIPER RELAY FLOWS TO TERMINAL 3 OF THE RELAY
TERMINLA 16 TO GROUND. THUS, THE RELAY COIL IS ACTIVATED AND THE CURRENT TO TERMINAL 1 OF THE RELAY FLOWS TO
TERMINAL LB TERMINAL LB OF THE REAR WIPER MOTOR
THE WIPER.
2. REAR WIPER INTERMITTENT OPERATION
WHEN THE IGNITION SW IS ON AND THE REAR WIPER AND WASHER SW IS TURNED TO INT POSITION, CURRENT FLOWING TO
TERMINAL 1 OF THE REAR WIPER MOTOR AND RELAY FLOWS TO TERMINAL 2 OF THE RELAY
WIPER AND WASHER SW
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 CHARGING AND DISCHARGING 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 SW IS
TURNED FURTHER, THE CURRENT FLOWING TO TERMINAL 2 OF THE REAR WASHER MOTOR FLOWS TO TERMINAL 3 OF THE
MOTOR TERMINAL 2 OF THE REAR WIPER AND WASHER SW
ROTATES AND THE WINDOW WASHER EJECTS THE SPRAY, ONLY WHILE THE SWITCH IS FULLY TURNED.
WHEN THE WIPER SW IS OFF AND THEN TURNED TO WASHER ON (WIPER OFF SIDE), ONLY THE WASHER OPERATES.
SERVICE HINTS
WASHER MOTOR
W 1
2–GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
3–GROUND : CONTINUITY WITH WASHER SW TURNED ON
REAR WIPER MOTOR AND RELAY
R24
1–GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
2–GROUND : CONTINUITY WITH REAR WIPER SW AT INT POSITION
3–GROUND : CONTINUITY WITH REAR WIPER SW AT ON POSITION
: PARTS LOCATION
CODE SEE PAGE
C17 28
J 6 29
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODE SEE PAGE
1B 18
1F 18
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODE SEE PAGE
IF1 36
38 (L/B)
BN1 BN1
40 (C/P)
BO1 38 (L/B)
: GROUND POINTS
CODE SEE PAGE
ID 36
C17
1 2 X
10 X X X
TERMINAL 16 GROUND.
CODE
R24
W 1
JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
FLOOR WIRE AND J/B NO. 1 (LEFT KICK PANEL)
JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
FLOOR WIRE AND COWL WIRE (LEFT KICK PANEL)
FRAME WIRE AND SEAT WIRE (UNDER THE DRIVER'S SEAT) FRAME WIRE AND SEAT WIRE (UNDER THE DRIVER'S SEAT)
BACK DOOR NO. 1 WIRE AND BACK DOOR NO. 1 SUB WIRE (BACK DOOR UPPER LEFT)
GROUND POINTS LOCATION
LEFT KICK PANEL
BLACK
X
16 X
TERMINAL 1 OF THE REAR WIPER AND WASHER SW
MOTOR TO GROUND AND CAUSES THE MOTOR TO OPERATE
TERMINAL 16 TO GROUND SO THAT THE WASHER MOTOR
SEE PAGE
30 (L/B)
26 (5S–FE), 27 (4A–FE)
J 6
A A
A A A A
(HINT : SEE PAGE 7)
TERMINAL 10 OF THE REAR
CODE SEE PAGE
R24 W 1
1 2 3
2
GRAY
3
117