1996 TOYOTA RAV4 oil

Q08776
Shift Solenoid Valve No. 1 and No. 2
(−)(−) (+)(+)
S1 S2
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−197
1996 RAV4 (RM447U)
DTC P0750, P0755 Shift Solenoid A/B Malfunction
(Shift Solenoid Valve No. 1 / No. 2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
gear). The ECM then compares the actual gear with the shift schedule in the ECM memory to detect mechan-
ical trouble of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0750
P0755During normal driving, gear required by the ECM does not
match actual gear (2 trip detection logic)Shift solenoid valve No. 1 / No. 2 is stuck open or closed
Valve body is blocked up or stuck
HINT:
Check the shift solenoid valve No. 1 when DTC P0750 is output and check shift solenoid valve No. 2 when
DTC P0755 is output.
INSPECTION PROCEDURE
1 Check solenoid valve No. 1 or No. 2 operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No. 1 or No. 2.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valves do not leak air.
(b) When battery positive voltage is supplied to the solenoid
valves, check that solenoid valve open.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
2 Check valve body (See page DI−192).
NG Repair or replace valve body.
OK
Repair or replace transaxle (See page
AX−19).
DI40Z−01

Q08860
Solenoid
Connector
S2
S1
S1
S2
D02257
S1S2
Shift Solenoid Valve No. 1 and No. 2
DI−200
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
2 Check harness and connector between ECM and automatic transaxle solenoid
connector.
PREPARATION:
(a) Disconnect the connector from the ECM.
(b) Disconnect the solenoid connector from the automatic
transaxle.
CHECK:
Check the harness and connector between terminal S1 or S2
of the ECM and terminal S1 or S2 of the solenoid connector.
OK:
There is no open and no short circuit.
NG Repair or replace harness or connector.
OK
3 Check shift solenoid valve No. 1 or No. 2.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the solenoid connector.
(d) Remove the shift solenoid valve No. 1 or No. 2.
CHECK:
Measure resistance between solenoid connector and solenoid
body.
OK:
Resistance: 11 − 15 Ω
CHECK:
Connect positive  lead to terminal of the solenoid connector,
negative  lead to the solenoid body.
OK:
The solenoid makes an operating noise.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
Repair or replace solenoid wire.

D02262
(+)
(−)
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−205
1996 RAV4 (RM447U)
3 Check shift solenoid valve SL.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the shift solenoid valve SL connector.
(d) Remove the shift solenoid valve SL.
CHECK:
Measure the resistance between the solenoid connector and
solenoid body.
OK:
Resistance: 11 − 15 Ω
CHECK:
Connect positive  lead to terminal of the solenoid connector,
negative  lead to the solenoid body.
OK:
The shift solenoid valve SL makes operations noise.
NG Replace shift solenoid valve SL.
OK
Check and replace or repair solenoid wire.

D02263
RotorFront Speed Sensor
NS
ECMFront Speed Sensor
Ring Gear
D02264
0 V
5 V/div
2 mec./division DI−206
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
DTC P1700 Speed sensor No. 2 Circuit Malfunction
(Front Speed Sensor)
CIRCUIT DESCRIPTION
The front speed sensor detects the vehicle speed based on revolution of the ring gear and sends signals
to the ECM. An AC voltage is generated in the front speed sensor coil as the ring rear mounted on the ring
gear rotates, and this voltage is sent to the ECM.
The center differential clutch is controlled by the ECM based on the signals from the front speed sensor and
rear speed sensor signals.
DTC No.DTC Detecting ConditionTrouble Area
P1700
All condition below are detects 5,400 times or more continu-
ously
(a) No signal from front speed sensor is input to ECM while 4
pulses of rear speed sensor is sent
(b) Vehicle speed: 18 km/h (11 mph) or more for at 4 sec.
(c) Park / neutral position switch:
OFF (Other than P or N position)
Open or short in front speed sensor circuit
Front speed sensor
ECM
Reference:
Wavefrom between terminals FR
+ and FR− when vehicle speed
is approx. 20 km/h (13 mph).
DI414−01

D02274
(+)
(−)
DI−214
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
3 Check shift solenoid valve ST.
PREPARATION:
(a) Jack−up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the shift solenoid valve ST connector.
(d) Remove the shift solenoid valve ST.
CHECK:
Measure the resistance between solenoid connector and sole-
noid body.
OK:
Resistance: 11 − 15 Ω
CHECK:
Connect positive  lead to terminal of the solenoid connector,
negative  lead to the solenoid body.
OK:
The shift solenoid valve ST makes operations noise.
NG Replace shift solenoid valve ST.
OK
Check and replace or repair solenoid wire.

D02275
Current flow to solenoid Center
Differential
Control
Pressure
ON
OFF
1 cycleDuty Ratio =
A + B
A
x 100 (%)
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−215
1996 RAV4 (RM447U)
DTC P1770 Differential Lock Solenoid No. 1 Circuit
Malfunction (Shift Solenoid Valve SLD)
CIRCUIT DESCRIPTION
Shift solenoid valve SLD controls the oil pressure applied to the
center differential clutch and maintains the limited slip differen-
tial effects at most appropriate level.
The ECM determines optimum control pressure according to
the signals from the throttle position sensor, front and rear
transaxle revolution sensor and control volume of current flow
to the shift solenoid valve.
The amount of current flow to the solenoid valve is controlled
by the duty ratio* of the ECM output signal. The higher the duty
ratio becomes, the higher the center differential control pres-
sure becomes during the center differential control operation.
*: Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle.
For example, if A is the period of continuity in one cycle, and B
is the period of non−continuity, then
DTC No.DTC Detection ConditionTrouble Area
P1770
All conditions below are detected 1 sec. or more
(2 trip detection logic)
(a) SLD output signal’s duty ON of 3.3 msecs. or more with
duty ratio of at least 5 % lasts
(b) B
+ voltage: 11 V or more
Open or short in shift solenoid valve SLD circuit
Shift solenoid valve SLD
ECM
DI417−01

D02276
S1 3
S1 1Shift Solenoid
Valve SLD
BR−B
IG214 IG213
L−B
L−B
E6
E62
SLD−
SLD+
B+ ECM
BR−B3
D02277
2
1
2
1
DI−216
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check shift solenoid valve SLD.
Check solenoid resistance:
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the connector.
CHECK:
Measure the resistance between terminals 1 and 2 of the sole-
noid connector.
OK:
Resistance: 5.1 − 5.5 Ω
Check solenoid operation:
CHECK:
Connect positive  lead with an 8 − 10 W bulb to terminal 1 of
the solenoid connector and nagative  lead to terminal 2, then
check the movement of the valve.
OK:
When battery positive voltage is appliedValve moves in → direction in illumina-
tion (on the left)
When battery positive voltage is cut offValve moves in ← direction in illumina-
tion (on the right)

EM0EH−03
S01361
Compression
Gauge
− ENGINE MECHANICALCOMPRESSION
EM−3
1996 RAV4 (RM447U)
COMPRESSION
INSPECTION
HINT:
If there is lack of power, excessive oil consumption or poor fuel
economy, measure the compression pressure.
1. WARM UP AND STOP ENGINE
Allow the engine to warm up to normal operating temperature.
2. DISCONNECT DISTRIBUTOR CONNECTOR
3. DISCONNECT HIGH−TENSION CORDS FROM SPARK
PLUGS AND IGNITION COIL
4. REMOVE SPARK PLUGS
5. CHECK CYLINDER COMPRESSION PRESSURE
(a) Insert a compression gauge into the spark plug hole.
(b) Fully open the throttle.
(c) While cranking the engine, measure the compression
pressure.
HINT:
Always use a fully charged battery to obtain engine speed of
250 rpm or more.
(d) Repeat steps (a) through (c) for each cylinder.
NOTICE:
This measurement must be done in as short a time as pos-
sible.
Compression pressure:
1,275 kPa (13.0 kgf/cm
2, 185 psi) or more
Minimum pressure: 932 kPa (9.5 kgf/cm
2, 135 psi)
Difference between each cylinder:
98 kPa (1.0 kgf/cm
2, 14 psi) or less
(e) If the cylinder compression in one or more cylinders is low,
pour a small amount of engine oil into the cylinder through
the spark plug hole and repeat steps (a) through (c) for
cylinders with low compression.
If adding oil helps the compression, it is likely that
the piston rings and/or cylinder bore are worn or
damaged.
If pressure stays low, a valve may be sticking or
seating is improper, or there may be leakage past
the gasket.
6. REINSTALL SPARK PLUGS
7. RECONNECT HIGH−TENSION CORDS TO SPARK
PLUGS AND IGNITION COIL