Page 1070 of 1354

− MANUAL TRANSAXLEDIFFERENTIAL LOCKING SYSTEM (4WD)
MX−75
1996 RAV4 (RM447U)
3. INSPECT DIFFERENTIAL LOCK CONTROL SOLE-
NOID
Inspect the differential lock control solenoid.
(1) Disconnect the connector from the solenoid No.1
and No.2.
(2) Check continuity to each port when battery positive
voltage is applied and not applied to the connector
terminals of the solenoid No.1 and No.2.
Solenoid No.1
ConditionPort
Battery positive voltageE1 − Air
No voltageG − E1
Solenoid No.2
ConditionPort
Battery positive voltageF − E2
No voltageE2 − Air
4. INSPECT TRANSFER VACUUM ACTUATOR
(a) Vacuum Tank:
Inspect the transfer vacuum tank.
(1) Disconnect the solenoid hose No.0, No.2 and No.3
from the solenoid.
(2) Fill in the No.3 hose with a plug.
(3) Check that the indicator needle remains steady
when a vacuum of 500 mmHg (19.685 in.Hg) is ap-
plied to the hose No.0.
Standard:
Indicator falls 45 mmHg (1.772 in.Hg) or less during 15
seconds.
(b) Diaphragm (Lock Side):
Inspect the transfer vacuum tank.
(1) Disconnect the solenoid hose No.1 and No.2 from
the solenoid.
(2) Check that the indicator needle remains steady
when a vacuum of 500 mmHg (19.685 in.Hg) is ap-
plied to the hose No.1.
Standard:
Indicator falls 45 mmHg (1.772 in.Hg) or less during 15
seconds.
Page 1215 of 1354

SF0Q4−03
− SFISFI SYSTEM
SF−1
1996 RAV4 (RM447U)
SFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON THE FUEL SYSTEM, DISCON-
NECT THE NEGATIVE (−) TERMINAL CABLE FROM
THE BATTERY
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative (−) terminal cable is removed.
Therefore, if necessary, read the diagnosis before removing the
terminal.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME
WHEN WORKING ON THE FUEL SYSTEM
3. KEEP GASOLINE AWAY FROM RUBBER OR LEATH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) In event of engine misfire, these precautions should be
taken.
(1) Check proper connection to battery terminals, etc.
(2) After repair work, check that the ignition coil termi-
nals and all other ignition system lines are recon-
nected securely.
(3) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(b) Precautions when handling oxygen sensor.
(1) Do not allow oxygen sensor to drop or hit against an
object.
(2) Do not allow the sensor to come into contact with
water.
5. IF VEHICLE IS EQUIPPED WITH MOBILE RADIO SYS-
TEM (HAM, CB, ETC.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
6. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine to run out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will allow air suction and cause the engine to run out
of tune.
7. ELECTRONIC CONTROL SYSTEM
(a) Before removing SFI wiring connectors, terminals, etc.,
first disconnect the power by either turning the ignition
switch to LOCK or disconnecting the negative (−) terminal
cable from the battery.
HINT:
Always check the diagnostic trouble code before disconnecting
the negative (−) terminal cable from the battery.
Page 1230 of 1354
S01952
Sound
ScopeSF0QG−02
S01950
Ohmmeter SF−16
− SFIINJECTOR
1996 RAV4 (RM447U)
INJECTOR
ON−VEHICLE INSPECTION
1. INSPECT INJECTOR OPERATION
Check operation sound from each injector.
(1) With the engine running or cranking, use a sound
scope to check that there is normal operating noise
in proportion to engine speed.
(2) If you have no sound scope, you can check the in-
jector transmission operation with your finger.
If no sound or unusual sound is heard, check the wiring connec-
tor, injector or injection signal from the ECM.
2. INSPECT INJECTOR RESISTANCE
(a) Remove the cylinder head cover (See page EM−33).
(b) Disconnect the injector connectors.
(c) Using an ohmmeter, measure the resistance between the
terminals.
Resistance: Approx. 13.8 Ω
If the resistance is not as specified, replace the injector.
(d) Reconnect the injector connectors.
(e) Reinstall the cylinder head cover (See page EM−55).
Page 1241 of 1354

S01898
SF0QO−03
S01946
P
E
R
S00037
Ohmmeter
Throttle Position Sensor
VC
VTA
E2
S01901
Disconnect
Plug
− SFITHROTTLE BODY
SF−27
1996 RAV4 (RM447U)
THROTTLE BODY
ON−VEHICLE INSPECTION
1. INSPECT THROTTLE BODY
(a) Check that the throttle linkage moves smoothly.
(b) Check the vacuum at each port.
Start the engine.
Check the vacuum with your finger.
Port nameAt idleOther than idle
PNo vacuumVacuum
ENo vacuumVacuum
RNo vacuumNo vacuum
2. INSPECT THROTTLE POSITION SENSOR
(a) Apply vacuum to the throttle opener.
(b) Disconnect the sensor connector.
(c) Using an ohmmeter, measure the resistance between
each terminal.
Clearance between
lever and stop screwBetween
terminalsResistance
0 mm (0 in.)VTA − E20.2 − 5.7 kΩ
Throttle valve fully
openVTA − E22.0 − 10.2 kΩ
−VC − E22.5 − 5.9 kΩ
(d) Reconnect the sensor connector.
3. INSPECT AND ADJUST THROTTLE OPENER
4. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
5. CHECK IDLE SPEED
Idle speed: 700 ± 50 rpm
6. CHECK AND ADJUST THROTTLE OPENER SETTING
SPEED
(a) Disconnect the vacuum hose from the throttle opener,
and plug the hose end.
(b) Maintain the engine at 2,500 rpm.
(c) Release the throttle valve.
(d) Check that the throttle opener is set.
Throttle opener setting speed:
1,300 − 1,500 rpm (w/ cooling fan OFF)
Page 1245 of 1354

SF1QE−01
S01897
S01911Vacuum Throttle Lever
Throttle
Stop
Screw
No Clearance
P00025
VC
VTA
IDL
E2
VC VTA IDL E2
S01899
− SFITHROTTLE BODY
SF−31
1996 RAV4 (RM447U)
INSPECTION
1. CLEAN THROTTLE BODY
(a) Using a soft brush and carburetor cleaner, clean the cast
parts.
(b) Using compressed air, clean all the passages and aper-
tures.
NOTICE:
To prevent deterioration, do not clean the
throttle position sensor.
2. INSPECT THROTTLE VALVE
(a) Apply vacuum to the throttle opener.
(b) Check that there is no clearance between the throttle stop
screw and throttle lever when the throttle valve is fully
closed.
3. INSPECT THROTTLE POSITION SENSOR
(a) Apply vacuum to the throttle opener.
(b) Using an ohmmeter, measure the resistance between
each terminal.
Clearance between
lever and stop screwBetween terminalsResistance
0 mm (0 in.)VTA − E20.2 − 5.7 kΩ
Throttle valve fully
openVTA − E2 2.0 − 10.2 kΩ
−VC − E22.5 − 5.9 kΩ
4. IF NECESSARY, ADJUST THROTTLE POSITION SEN-
SOR
(a) Loosen the 2 set screws of the sensor.
Page 1246 of 1354
S01910
Ohmmeter
Vacuum IDL
E2
0.60 mm
S01910
Ohmmeter
Vacuum IDL
E20.50 or
0.70 mm SF−32
− SFITHROTTLE BODY
1996 RAV4 (RM447U)
(b) Apply vacuum to the throttle opener.
(c) Insert a 0.60 mm (0.024 in.) thikness gauge between the
throttle stop screw and stop lever.
(d) Connect the test probe of an ohmmeter to the terminals
IDL and E2 of the sensor.
(e) Gradually turn the sensor clockwise untill the ohmmeter
deflects, and secure it with the 2 set screws.
(f) Recheck the continuity between terminals IDL and E2.
Clearance between
lever and stop screwContinuity (IDL − E2)
0.50 mm (0.020 in.)Continuity
0.70 mm (0.028 in.)No continuity
Page 1248 of 1354

SF0QT−02
S01261
SST DLC1
E1 TE1
S01904
RSC
RSO+B
Ohmmeter
IAC Valve SF−34
− SFIIDLE AIR CONTROL (IAC) VALVE
1996 RAV4 (RM447U)
IDLE AIR CONTROL (IAC) VALVE
ON−VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:
Engine at normal operating temperature
Idle speed check correctly
Transmission in neutral position
(b) Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843−18020
(c) Maintain engine speed in the range between 900 − 1,300
rpm for 5 seconds. Check that it returns to idle speed.
If the engine speed operation is not as specified, check the IAC
valve, wiring and ECM.
(d) Remove the SST.
SST 09843−18020
2. INSPECT IAC VALVE RESISTANCE
NOTICE:
”Cold” and ”Hot” in these sentences express the tempera-
ture of the coils themselves. ”Cold” is from −10°C (14°F) to
50°C (122°F) and ”Hot” is from 50°C (122°F) to 100°C
(212°F).
(a) Disconnect the IAC valve connector.
(b) Using an ohmmeter, measure the resistance between ter-
minal +B and other terminals (RSC, RSO).
Resistance:
Cold: 17.0 − 24.5 Ω
Hot: 21.5 − 28.5 Ω
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
Page 1254 of 1354
SF0R2−02
S01917
ContinuityOhmmeter
S01918
No Continuity
Ohmmeter
S01919
Air
E
G
S01920
Air
Filter E
Battery
− SFIVSV FOR EXHAUST GAS RECIRCULATION (EGR)
SF−43
1996 RAV4 (RM447U)
INSPECTION
1. 4WD:
REMOVE BATTERY
2. REMOVE VSV
3. INSPECT VSV
4. INSPECT VSV FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the
terminals.
Resistance: At 20°C (68°F): 33 − 39 Ω
If there is no continuity, replace the VSV.
5. INSPECT VSV FOR GROUND
Using an ohmmeter, check that there is no continuity between
each terminal and the body.
If there is continuity, replace the VSV.
6. INSPECT VSV OPERATION
(a) Check that air flows from ports E to G.
(b) Apply battery positive voltage across the terminals.
(c) Check that air flows from port E to the filter.
If operation is not as specified, replace the VSV.
7. REINSTALL VSV
8. 4WD:
REINSTALL BATTERY