TOYOTA RAV4 1996 Service Repair Manual

122
FRONT WIPER AND WASHER
L-W
L-B
L
L W-B
L-B
L
L-W
L- R
W-B
IG20A W IPER
[FUSE BLOCK
IB11
IB15
IB113L- W
L- B
L- RL YL FROM POW ER SOURCE SYSTEM (
SEE PAGE 54)
F 6
FRONT WIPER MOTOR
L
14 12
L
EA
W-B
F 8
L
TO REAR
WASHER M OTOR
AOR
W-B
E 1
1J 13 1I 181F 7
1I 21
1J 1112 -Y LFRO NT W ASHER
MOTOR F 5
W-B
L-
2365
M
1
A
JUNCTION
CONNECT J10
]
M
OFF
INT
HIGH
W ASHER
FRONT WIPER AND W ASHER SW
[COMB. SW ]
LOW
WIPER RELAY C14
16
7 2
8
1711

123
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINAL 17 OF THE FRONT WIPER AND WASHER SW, TERMINAL
2 OF THE FRONT WASHER MOTOR AND TERMINAL 6 OF THE FRONT WIPER MOTOR THROUGH THE WIPER FUSE.
1. LOW SPEED POSITION
WITH WIPER SW TURNED TO LOW POSITION, THE CURRENT FLOWS FROM TERMINAL 17 OF THE FRONT WIPER AND WASHER SW
" TERMINAL 7 "TERMINAL 3 OF THE FRONT WIPER MOTOR "WIPER MOTOR "TERMINAL 1 "TO GROUND AND CAUSES THE
FRONT WIPER MOTOR TO RUN AT LOW SPEED.
2. HIGH SPEED POSITION
WITH WIPER SW TURNED TO HIGH POSITION, THE CURRENT FLOWS FROM TERMINAL 17 OF THE FRONT WIPER AND WASHER SW
"TERMINAL 8 "TERMINAL 2 OF THE FRONT WIPER MOTOR "WIPER MOTOR "TERMINAL 1 "TO GROUND AND CAUSES THE
FRONT 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 17 OF THE FRONT WIPER AND WASHER SW "TERMINAL 2 "TO GROUND. THIS FLOW OF
CURRENT OPERATES THE INTERMITTENT CIRCUIT AND THE CURRENT FLOWS FROM TERMINAL 17 OF THE WIPER AND FRONT
WASHER SW "TERMINAL 7 "TERMINAL 3 OF THE FRONT WIPER MOTOR "WIPER MOTOR "TERMINAL 1 "TO GROUND AND
OPERATES THE WIPER.
THE INTERMITTENT OPERATION IS CONTROLLED BY A CONDENSER'S CHARGED AND DISCHARGED FUNCTION INSTALLED IN THE
RELAY AND THE INTERMITTENT TIME IS CONTROLLED BY A TIME CONTROL SW TO CHANGE THE CHARGING TIME OF THE
CONDENSER.
4. WASHER CONTINUOUS OPERATION (W/ INT CONTROL)
WITH WASHER SW TURNED TO ON, THE CURRENT FLOWS FROM TERMINAL 2 OF THE FRONT WASHER MOTOR "TERMINAL 1 "
TERMINAL 11 OF THE FRONT WIPER AND WASHER SW "TERMINAL 2 "TO GROUND AND CAUSES TO THE FRONT WASHER
MOTOR TO RUN. AND THE WINDOW WASHER EMITS A WATER SPRAY. THIS CAUSES THE CURRENT TO FLOW TO WASHER
CONTINUOUS OPERATION CIRCUIT IN TERMINAL 17 OF THE WIPER AND WASHER SW "TERMINAL 7 "TERMINAL 3 OF THE
FRONT WIPER MOTOR "WIPER MOTOR "TERMINAL 1 "TO GROUND AND OPERATES THE WIPER.
C14 FRONT WIPER AND WASHER SW [COMB. SW]
2-GROUND : ALWAYS CONTINUITY
17-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
7-GROUND : APPROX. 12 VOLTS WITH THE WIPER AND WASHER SW AT LOW OR MIST POSITION
: APPROX. 12 VOLTS 2 TO 12 SECONDS INTERMITTENTLY WITH THE WIPER AND WASHER SW AT INT POSITION
16-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW ON UNLESS THE WIPER MOTOR AT STOP POSITION
8-GROUND : APPROX. 12 VOLTS WITH THE WIPER AND WASHER SW AT HIGH POSITION
F6 FRONT WIPER MOTOR
6-5 : CLOSED UNLESS THE WIPER MOTOR AT STOP POSITION
SYSTEM OUTLINE
SERVICE HINTS

124
FRONT WIPER AND WASHER
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1430F 628J1031
F 528F 831
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1F20FUSE BLOCK ASSY WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
1I20INSTRUMENT PANEL WIRE AND J/B NO 1 (LOWER FINISH PANEL)1J20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IB136ENGINE ROOM MAIN WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EA34RADIATOR RIGHT
IG36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E 134ENGINE ROOM MAIN WIRE

125
REAR WIPER AND WASHER

126
REAR WIPER AND WASHER
IG
L
L-Y
L-R
W-B W-BW-BG-BP
LPG
L FROM POWER SOURCE SYSTEM (
SEE PAGE 54)
0A W IPER
FUSE BLOCK]REAR W IPER AND W ASHER SW [COMB. SW ] C14
ID1 8
P-B
R MOTOR
REAR W IPER
MOTOR6ID 1 3
P
G-B
12
BK1 6
L L L
BK1 5BK14
P
8
L
L
TO FRONT
WASHER MOTOR
B10E 1 14
1L 9L 1F 7
1J 13
1J8
1I6
21 REAR W ASHE R 2
3
54REAR W IPER RELAY R1 7
26
A
J10
JUNCTION
CONNECTOR
A
MR1
214
2
[ FWASHER 1
OFF
IN T
ON
12 13 10 2 WASHER 2
M

127
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 "TERMINAL 10 OF THE REAR WIPER AND WASHER SW "
TERMINAL 2 "TOGROUND. THUS, THE RELAY COIL IS ACTIVATED AND THE CURRENT TO TERMINAL 3 OF THE RELAY FLOWS TO
TERMINAL 4 " TERMINAL 4 OF THE REAR WIPER 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 3 OF THE REAR WIPER RELAY FLOWS TO TERMINAL 2 OF THE RELAY "TERMINAL 13 OF THE REAR WIPER AND
WASHER SW "TERMINAL 2 "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 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 1 OF THE
MOTOR "TERMINAL 12 OF THE REAR WIPER AND WASHER SW "TERMINAL 2 "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.
R 2 REAR WASHER MOTOR
2-GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
1-GROUND : CONTINUITY WITH WASHER SW TURNED ON
R15 REAR WIPER RELAY
3-GROUND : APPROX. 12 VOLTS WITH 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
CODESEE PAGECODESEE PAGECODESEE PAGE
C1430J1029R1632 (2-DOOR), 33 (4-DOOR)
F 831R 229R1732 (2-DOOR), 33 (4-DOOR)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1F20FUSE BLOCK ASSY WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
1I20INSTRUMENT PANEL WIRE AND J/B NO 1 (LOWER FINISH PANEL)1J20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
1L20FLOOR WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
ID136FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
BK140 (2-DOOR)BACK DOOR NO 1 WIRE AND FLOOR WIRE (BESIDE RIGHT REAR COMB LIGHT)BK142 (4-DOOR)BACK DOOR NO. 1 WIRE AND FLOOR WIRE (BESIDE RIGHT REAR COMB. LIGHT)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IG36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E 134ENGINE ROOM MAIN WIREB1042 (4-DOOR)BACK DOOR NO. 1 WIRE
B1040 (2-DOOR)BACK DOOR NO. 1 WIRE
SYSTEM OUTLINE
SERVICE HINTS

128
RADIO AND PLAYER
15A
CIG & RADFROM POW ER SOURCE SYSTEM (
SEE PAGE 54)
6
GR
TION
NECTOR
A 3A 415A
DOME 18
L-Y L-YGR
ACC+B
R 3 , R 4
B A RADIO AND PLAYER
A 7A2A6A1A5B2B6B1B3 GND FL+ FL- FR+ FR- RL+ RR+ RR-RL-
IFIC 1 1IC17II11 II17ID25ID26ID23ID24
(
*
2) (
*
2)
P
V
LG
L
B
Y
R
W BR BR
P
V
LG
L
B
Y
R
W
F 8
[FUSE BLOCK]
7
GR
19
2
L-Y
C
J 3
JU NC TIO N
CONNECTOR
CD
J 3
JUNC
CON
D
12 12
A1
B2
A2
B1 (
*1)
A1
B2
A2
B 1 (
*1)
FRONT SPEAKER
LH F 9
FRONT SPEAKER
RH F10
B R12 ,
A
REAR SPEAKER L HB R13 ,
A
REAR SPEAKER RH
1E 4
1H 31J 5
1I 22
*1 :2-DOOR
*2 :4-DOOR

129
R 4 (A) RADIO AND PLAYER
(A) 4-GROUND : ALWAYS APPROX. 12 VOLTS
(A) 3-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ACC OR ON POSITION
(A) 7-GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
F 831R 3B31R13A32 (2-DOOR)
F 932 (2-DOOR), 33 (4-DOOR)R 4A31R13B33 (4-DOOR)
F1032 (2-DOOR), 33 (4-DOOR)R12A32 (2-DOOR)
J 331R12B33 (4-DOOR)
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
223R/B NO. 2 (ENGINE COMPARTMENT LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1E20FUSE BLOCK ASSY WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
1H
1I20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
1J
()
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IC136FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
ID236FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
II138FRONT DOOR RH AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
(
SEE PAGE 26)12 1212
3X 6 CCCDD D
12 34
567XX
12 1 2
12 1 2(
HINT : SEE PAGE 7) F 8 F 9
GRAYF10
GRAYJ 3
BLACK BR 3
A R13 (
2-DOOR)
B R13 (
4-DOOR)
A R12 (
2-DOOR)
B R12 (
4-DOOR)
A R 4
SERVICE HINTS

130
ELECTRONICALLY CONTROLLED TRANSMISSION
THIS SYSTEM ELECTRONICALLY CONTROLS THE GEAR SHIFT TIMING, LOCK-UP TIMING, THE CLUTCH AND BRAKE HYDRAULIC
PRESSURE, AND THE ENGINE TORQUE DURING SHIFTING TO ACHIEVE OPTIMUM SHIFT FEELING.
IN ACCORDING TO THE VEHICLE DRIVING CONDITIONS AND ENGINE OPERATING CONDITIONS AS DETECTED BY VARIOUS
SENSORS.
1. GEAR SHIFT OPERATION
DURING DRIVING, THE ENGINE CONTROL MODULE SELECTS THE SHIFT FOR EACH GEAR WHICH IS MOST APPROPRIATE TO THE
DRIVING CONDITIONS, BASED ON INPUT SIGNALS FROM THE ENGINE COOLANT TEMP. SENSOR TO TERMINAL THW OF THE
ENGINE CONTROL MODULE, AND ALSO THE INPUT SIGNALS TO TERMINAL SPD OF THE ENGINE CONTROL MODULE FROM THE
SPEEDOMETER DEVOTED TO THE ELECTRONICALLY CONTROLLED TRANSMISSION. CURRENT IS THEN OUTPUT TO THE
ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID. WHEN SHIFTING TO 1ST SPEED, CURRENT FLOWS FROM TERMINAL
S1 OF THE ENGINE CONTROL MODULE "TERMINAL
(A) 3 (2WD) OR (B) 3 (4WD) OF THE ELECTRONICALLY CONTROLLED
TRANSMISSION SOLENOID "GROUND, AND CONTINUES TO THE NO. 1 SOLENOID CAUSES THE SHIFT.
FOR 2ND SPEED, CURRENT FLOWS FROM TERMINAL S1 OF THE ENGINE CONTROL MODULE "TERMINAL 3 OF THE
ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID "GROUND, AND FROM TERMINAL S2 OF THE ENGINE CONTROL
MODULE "TERMINAL
(A) 1 (2WD) OR (B) 6 (4WD) OF THE ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID "
GROUND, AND CONTINUES TO SOLENOIDS NO. 1 AND NO. 2 CAUSES THE SHIFT.
FOR 3RD SPEED, THERE IS NO CONTINUOUS TO NO. 1 SOLENOID, ONLY TO NO. 2 CAUSING THE SHIFT.
SHIFTING INTO 4TH SPEED (OVERDRIVE) TAKES PLACE WHEN THERE IS NO CONTINUOUS TO EITHER NO. 1 OR NO. 2 SOLENOID.
2. LOCK-UP OPERATION
WHEN THE ENGINE CONTROL MODULE JUDGES FROM EACH SIGNAL THAT LOCK-UP OPERATION CONDITIONS HAVE BEEN MET,
CURRENT FLOWS FROM TERMINAL SL OF THE ENGINE CONTROL MODULE "TERMINAL
(A) 2 (2WD) OR (B) 5 (4WD) OF THE
ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID "GROUND, CONTINUES TO THE LOCK-UP SOLENOID AND CAUSING
LOCK-UP OPERATION.
3. STOP LIGHT SW CIRCUIT
IF THE BRAKE PEDAL IS DEPRESSED (STOP LIGHT SW ON) WHEN DRIVING IN LOCK-UP CONDITION, A SIGNAL IS INPUT TO
TERMINAL B/K OF THE ENGINE CONTROL MODULE, THE ENGINE CONTROL MODULE OPERATES AND CURRENT TO THE LOCK-UP
SOLENOID IS CUT.
4. OVERDRIVE CIRCUIT
*O/D MAIN SW ON
WHEN THE O/D MAIN SW IS TURNED ON (SW POINT IS OPEN), A SIGNAL IS INPUT TO TERMINAL OD2 OF THE ENGINE CONTROL
MODULE AND ENGINE CONTROL MODULE OPERATION CAUSES GEAR SHIFT WHEN THE CONDITIONS FOR OVERDRIVE ARE MET.
*O/D MAIN SW OFF
WHEN THE O/D MAIN SW IS TURNED OFF (SW POINT IS CLOSED), THE CURRENT FLOWING THROUGH THE O/D OFF INDICATOR
LIGHT FLOWS THROUGH THE O/D MAIN SW TO GROUND. CAUSING THE INDICATOR LIGHT TO LIGHT UP. AT THE SAME TIME, A
SIGNAL IS INPUT TO TERMINAL OD2 OF THE ENGINE CONTROL MODULE AND ENGINE CONTROL MODULE OPERATION
PREVENTS SHIFT INTO OVERDRIVE.
SYSTEM OUTLINE

131
5. CENTER DIFFERENTIAL CLUTCH CONTROL (4WD)
THE CENTER DIFFERENTIAL CLUTCH CONTROL USES A LINEAR SOLENOID TYPE VALVE (SOLENOID VALVE SLD) TO CONTROL THE
CENTER DIFFERENTIAL CLUTCH. BY CONTROLLING THE FLUID PRESSURE, THE LIMITED SLIP DIFFERENTIAL EFFECT OF THE
CENTER DIFFERENTIAL CAN ALWAYS BE MAINTAINED AT THE OPTIMUM FOR THE CURRENT DRIVING CONDITIONS TO INCREASE
ROAD-HOLDING ABILITY.
SOLENOID VALVE SLD OPENS AND CLOSES IN RESPONSE TO SIGNALS FROM THE ENGINE CONTROL MODULE. THUS THE
SOLENOID MODULATOR VALVE MAINTAINS A CONSTANT FLUID PRESSURE FOR OPERATION OF THE CENTER DIFFERENTIAL
CLUTCH CONTROL VALVE AND CENTER DIFFERENTIAL CLUTCH.
*NORMAL DRIVING
SOLENOID VALVE SLD OPENS AND CLOSES IN RESPONSE TO THE THROTTLE OPENING ANGLE TO CONTROL THE FLUID
PRESSURE OPERATING ON THE CENTER DIFFERENTIAL CLUTCH. WHEN THE VEHICLE TAKES OFF IN FIRST GEAR WITH A
LARGE THROTTLE OPENING ANGLE, THE FLUID PRESSURE IS KEPT HIGH. SO EVEN IF THE VEHICLE TAKES OFF SUDDENLY OR
THE ROAD SURFACE IS SLIPPERY, SMOOTH, RELIABLE ACCELERATION IS POSSIBLE.
*SLIPPING
WHEN A LARGE DIFFERENCE OCCURS BETWEEN THE FRONT WHEEL SPEED AND REAR WHEEL SPEED AT LOW SPEEDS,
SOLENOID VALVE SLD IS FULLY CLOSED TO APPLY HIGH FLUID PRESSURE TO THE CENTER DIFFERENTIAL CLUTCH AND
PROVIDE A LARGE LIMITED SLIP DIFFERENTIAL EFFECT.
*WIDE CORNERING
WHEN DIFFERENCES ARISE BETWEEN THE FRONT WHEEL SPEED AND REAR WHEEL SPEED DUE TO DIFFERENCES IN THE
TURNING RADIUS DURING CORNERING AT LOW SPEEDS, SOLENOID VALVE SLD IS FULLY OPEN TO APPLY A WEAK LIMITED SLIP
DIFFERENTIAL EFFECT AND PERMIT SMOOTH CORNERING.
6. ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW
IF THE ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW IS CHANGED FROM NORMAL TO POWER, THE
CURRENT THROUGH THE POWER INDICATOR FLOWS TO GROUND, CURRENT FLOWS TO TERMINAL P OF THE ENGINE CONTROL
MODULE, THE ENGINE CONTROL MODULE OPERATES, AND SHIFT UP AND SHIFT DOWN OCCURS AT HIGHER VEHICLE SPEEDS
THAN WHEN THE SW IS IN NORMAL POSITION.