TOYOTA RAV4 1996 Service Repair Manual

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.

SF0RD−03
SF−54
− SFIVAPOR PRESSURE SENSOR
1996 RAV4 (RM447U)
VAPOR PRESSURE SENSOR
COMPONENTS

SF0RE−02
− SFIVAPOR PRESSURE SENSOR
SF−55
1996 RAV4 (RM447U)
INSPECTION
1. INSPECT POWER SOURCE VOLTAGE OF VAPOR
PRESSURE SENSOR
(a) Disconnect the vapor pressure 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 vapor pressure sensor connector.
2. INSPECT POWER OUTPUT OF VAPOR PRESSURE
SENSOR
(a) Turn the ignition switch ON.
(b) Disconnect the EVAP hose from the vapor pressure sen-
sor.
(c) Connect a voltmeter to terminals PTNK and E2 of the
ECM, and measure the output voltage under the following
conditions:
(1) Apply vacuum (2.0 kPa, 15 mmHg, 0.59 in.Hg) to
the vapor pressure sensor.
Voltage: 1.3 − 2.1 V
(2) Release the vacuum from the vapor pressure sen-
sor.
Voltage: 3.0 − 3.6 V
(3) Apply pressure (1.5 kPa, 15 gf/cm
2, 0.22 psi) to the
vapor pressure sensor.
Voltage: 4.2 − 4.8 V
(d) Reconnect the EVAP hose to the vapor pressure sensor.

SF0RF−01
S01929
Knock Sensor
Connector
Knock Sensor 1 SF−56
− SFIKNOCK SENSOR
1996 RAV4 (RM447U)
KNOCK SENSOR
COMPONENTS

SF0RG−02
S01838
2WD
SST
P01630
Ohmmeter
− SFIKNOCK SENSOR
SF−57
1996 RAV4 (RM447U)
INSPECTION
1. 4WD:
REMOVE ENGINE AND TRANSAXLE ASSEMBLY (See
page EM−68)
2. REMOVE KNOCK SENSOR
(a) Disconnect the knock sensor connector.
(b) Using SST, remove the knock sensor.
SST 09816−30010
Torque: 44 N·m (450 kgf·cm, 33 ft·lbf)
3. INSPECT KNOCK SENSOR
Using an ohmmeter, check that there is no continuity between
the terminal and body.
If there is continuity, replace the sensor.
4. REINSTALL KNOCK SENSOR
Installation is in the reverse order of removal.
5. 4WD:
REINSTALL ENGINE AND TRANSAXLE ASSEMBLY
(See page EM−74)

SF1QB−01
SF−58
− SFIHEATED OXYGEN SENSOR
1996 RAV4 (RM447U)
HEATED OXYGEN SENSOR
COMPONENTS

− SFIHEATED OXYGEN SENSOR
SF−59
1996 RAV4 (RM447U)