1996 TOYOTA RAV4 Service Repair Manual

SF0R5−03
SF−46
− SFIVSV FOR VAPOR PRESSURE SENSOR
1996 RAV4 (RM447U)
VSV FOR VAPOR PRESSURE SENSOR
COMPONENTS

SF0R6−02
S01921
ContinuityOhmmeter
S01922
Ohmmeter
No Continuity
S01923
Air
EG
F
S01924
Air
G E
F
Battery
− SFIVSV FOR VAPOR PRESSURE SENSOR
SF−47
1996 RAV4 (RM447U)
INSPECTION
1. REMOVE AIR CLEANER CAP ASSEMBLY (See page
ST−4)
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 the air flows from ports E to G.
(b) Apply battery positive voltage across the terminals.
(c) Check that the air flows from ports E to F.
If operation is not as specified, replace the VSV.
7. REINSTALL VSV
8. REINSTALL AIR CLEANER CAP ASSEMBLY

SF0R7−01
S01930
ECT Sensor Connector
ECT Sensor
 Gasket
 Non−reusable part SF−48
− SFIENGINE COOLANT TEMPERATURE (ECT) SENSOR
1996 RAV4 (RM447U)
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
COMPONENTS

SF0R8−01
S01196S01699
Z17274
35 1020 30
TEMPERATURE°C (°F) Acceptable
RESISTANCE kΩ
2
1
0.5
0.3
0.2
0.1
−20 0
2040 60
(32)(68)(104)(140)(176)(212)
(−4)100 80
Ohmmeter
− SFIENGINE COOLANT TEMPERATURE (ECT) SENSOR
SF−49
1996 RAV4 (RM447U)
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR
3. INSPECT ECT SENSOR RESISTANCE
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: Refer to the graph
If the resistance is not as specified, replace the sensor.
4. REINSTALL ECT SENSOR
Install a new gasket to the ECT sensor.
Torque: 25 N·m (250 kgf·cm, 18 ft·lbf)
5. FILL WITH ENGINE COOLANT

SF0R9−01
S01927
Grommet
IAT Sensor
IAT Sensor
Connector SF−50
− SFIINTAKE AIR TEMPERATURE (IAT) SENSOR
1996 RAV4 (RM447U)
INTAKE AIR TEMPERATURE (IAT) SENSOR
COMPONENTS

SF0RA−02
Z17273
Ohmmeter
Acceptable
TEMPERATURE°C (°F) −20 0 20 40 60
(32)(68)(104)(140)(176)(212) (−4)100 80 35 10 2030
RESISTANCE kΩ
2
1
0.5
0.3
0.2
0.1
− SFIINTAKE AIR TEMPERATURE (IAT) SENSOR
SF−51
1996 RAV4 (RM447U)
INSPECTION
1. REMOVE IAT SENSOR
2. INSPECT IAT SENSOR RESISTANCE
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: Refer to the graph
If the resistance is not as specified, replace the sensor.
3. REINSTALL IAT SENSOR

SF0RB−02
SF−52
− SFIMANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
1996 RAV4 (RM447U)
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
COMPONENTS

SF0RC−02
S01943
Voltmeter
E2 VC
S01925
Vacuum
ECM
PIM
E2 Voltmeter
66.7
500
19.69Applied
Vacuum
kPa
mmHg
in.Hg
Voltage
drop V0.3 − 0.5 0.7 − 0.9 1.1 − 1.3 1.5 − 1.7 1.9 − 2.1 13.3
100
3.94 26.7
200
7.87 40.0
300
11.81 53.5
400
15.75
− SFIMANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
SF−53
1996 RAV4 (RM447U)
INSPECTION
1. INSPECT POWER SOURCE VOLTAGE OF MAP SEN-
SOR
(a) Disconnect the MAP sensor connector.
(b) Turn the ignition switch ON.
(c) Using a voltmeter measure the voltage between connec-
tor terminals VC and E2 of the wiring harness side.
Voltage: 4.5 − 5.5 V
(d) Turn the ignition switch to LOCK.
(e) Reconnect the MAP sensor connector.
2. INSPECT POWER OUTPUT OF MAP SENSOR
(a) Turn the ignition switch ON.
(b) Disconnect the vacuum hose on the air intake chamber
side.
(c) Connect a voltmeter to terminals PIM and E2 of the ECM,
and measure the output voltage under ambient atmo-
spheric pressure.
(d) Apply vacuum to the MAP sensor in 13.3 kPa (100 mmHg,
3.94 in.Hg) segments to 66.7 kPa (500 mmHg, 19.69
in.Hg).
(e) Measure the voltage drop from step (c) above for each
segment.
Voltage drop
(f) Reconnect the vacuum hose to the air intake chamber.