Toyota Supra 2015 Wiring Diagram Manual page 188

SYSTEM OUTLINE
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS TO TERMINAL 2 OF THE 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 → TERMINAL 1 OF THE REAR
WIPER AND WASHER SW →
CURRENT TO TERMINAL 1 OF THE RELAY FLOWS TO →
MOTOR → MOTOR → TO GROUND AND CAUSES THE MOTOR TO OPERATE 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 →
TERMINAL 10 OF THE REAR WIPER AND WASHER SW → TERMINAL 16 → 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 CHANGING 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 WASHER MOTOR FLOWS
TO TERMINAL 3 OF THE MOTOR → TERMINAL 2 OF THE REAR WIPER AND WASHER SW → TERMINAL 16 → TO
GROUND, SO THAT THE WASHER MOTOR 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
W1 WASHER MOTOR
2-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
3-GROUND : CONTINUITY WITH THE WASHER SW TURNED ON
R15 REAR WIPER MOTOR AND RELAY
1-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
2-GROUND : CONTINUITY WITH THE REAR WIPER SW AT INT POSITION
3-GROUND : CONTINUITY WITH THE REAR WIPER SW AT ON POSITION
: PARTS LOCATION
CODE SEE PAGE
C14 28
R15 30
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODE SEE PAGE
1A
20
1H
1J
20
1K
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODE SEE PAGE
IB2
36
IC2
36
BM1
40
BO1
40
: GROUND POINTS
CODE SEE PAGE
IE
36
: SPLICE POINTS
CODE SEE PAGE
E9
32
TERMINAL 16 →
CODE
W1 W1
JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
ENGINE ROOM MAIN WIRE AND J/B NO. 1 (LEFT KICK PANEL)
COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL) (
JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
ENGINE ROOM MAIN WIRE AND COWL WIRE (LET KICK PANEL)
FLOOR NO. 2 WIRE AND COWL WIRE (LEFT KICK PANEL)
BACK DOOR NO. 1 WIRE AND FLOOR NO. 2 WIRE (LEFT SIDE OF PACKAGE TRAY TRIM)
BACK DOOR NO. 2 WIRE AND BACK DOOR NO. 1 WIRE (BACK DOOR UPPER LEFT)
GROUND POINTS LOCATION
LEFT KICK PANEL
WIRE HARNESS WITH SPLICE POINTS
ENGINE ROOM MAIN WIRE
TO GROUND. THUS, THE RELAY COIL IS ACTIVATED AND THE
TERMIANL LH → TERMINAL LH OF THE REAR WIPER
SEE PAGE
25 (2JZ-GTE)
27 (2JZ-GE)
)
CODE SEE PAGE
E21
34
CODE SEE PAGE
WIRE HARNESS WITH SPLICE POINTS
ENGINE ROOM MAIN WIRE
205