sensor TOYOTA AVALON 2001 Service Repair Manual

SF06S-03
B09135
Ground Cable
PCV Hose
Air Intake Chamber
Assembly
ECT Sensor
Connector ECT Sender
Gauge Connector
IAC Valve
Connector
VSV Connector for No.2 ACIS
Engine Coolant
Reservoir HoseThrottle Position
Sensor Connector Brake Booster
Vacuum Hose Throttle Body Bracket
Water Outlet PS Pressure Tube
19.5 (200, 14)
39 (400, 19)
15 (150, 11)
43 (440, 32)
Ground Strap
DLC1
Gasket
15 (150, 11)
Grand Strap
Connector

Gasket
39 (400, 29)
V-Bank Cover
Accelerator CableAir Cleaner Hose
w/ Resonator
Purge Hose
Vacuum Hose
Fuel Hose
Clamp
Heater Hose
Intake Manifold Assembly
Injector Connector x 9
Knock Sensor
Connector
Upper Radiator
Hose

Gasket
: Specified torque

Non-reusable part
N´m (kgf´cm, ft´lbf)

Retainer
Knock Sensor
Water Bypass
Hose
VSV Connector for
EVAP
No.1 Engine
Hanger
VSV Connector
for No.1 ACIS
Throttle Cable
Ground Cable
SF-76
- SFIKNOCK SENSOR
1185 Author
: Date
:
2001 AVALON (RM808U)
KNOCK SENSOR
COMPONENTS

SF102-02
A10518
5 mm
Hexagon
Wrench
P20115
SSTKnock Sensor 1
Knock Sensor 2
P01630
Ohmmeter
- SFIKNOCK SENSOR
SF-77
1186 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
1. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
(c) Remove the V-bank cover.
2. REMOVE AIR CLEANER HOSE WITH RESONATOR
3. REMOVE INTAKE MANIFOLD ASSEMBLY AND WA-
TER OUTLET (See page EM-31)
4. REMOVE KNOCK SENSORS
(a) Disconnect the knock sensor connector.
(b) Using SST, remove the knock sensor.
SST 09817-1601 1
5. INSPECT KNOCK SENSORS
Using an ohmmeter, check that there is no continuity between
the terminal and body.
If there is continuity, replace the sensor.
6. REINSTALL KNOCK SENSORS
(a) Using SST, install the knock sensor.
SST 09817-1601 1
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
(b) Connect the knock sensor connector.
7. REINSTALL WATER OUTLET AND INTAKE MAN-
IFOLD ASSEMBLY (See page EM-59)
8. REINSTALL AIR CLEANER HOSE WITH RESONATOR
9. REINSTALL V-BANK COVER
(a) Using 5 mm hexagon wrench, install the V-bank cover
with the 3 cap nuts.
(b) Press down the V-bank cover fastener.

SF0LC-03
- SFISFI SYSTEM
SF-1
111 0 Author
: Date
:
2001 AVALON (RM808U)
SFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (-) TERMINAL CABLE FROM BAT-
TERY
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative (-) terminal cable is removed from
the battery.
Therefore, if necessary, read the diagnosis before removing the
negative (-) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME
WHEN WORKING ON 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 the 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 A MOBILE RADIO
SYSTEM (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.

SF0ZS-03
B09088

Gasket
Throttle Body
Water Bypass
HoseAir Assist
Hose
29 (300, 22)
19.5 (200, 14)
Air Cleaner Hose
w/ Resonator Vacuum Hose
Accelerator CableThrottle Body
Bracket
V-Bank Cover
IAC Valve
ConnectorThrottle
Position
Sensor
Connector
: Specified torque

Non-reusable part
N´m (kgf´cm, ft´lbf)
Vacuum Hose
Brake Booster
Vacuum Hose
Fuel Vapor
Feed Hose
Throttle Cable
SF-34
- SFITHROTTLE BODY
1143 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS

B09089
Protector

O-Ring
Throttle Position Sensor

Gasket

O-Ring
No.2 Throttle BodyNo.1 Throttle
Body
6.9 (70, 61 in.´lbf)

Gasket
IAC Valve
N´m (kgf´cm, ft´lbf)

Non-reusable part: Specified torque No.1 Intake Air Control Valve

Gasket
6.9 (70, 61 in.´lbf)
Bracket
- SFITHROTTLE BODY
SF-35
1144 Author
: Date
:
2001 AVALON (RM808U)

B09085
SF061-03
B09086
VTA
E2
VCOhmmeter
Vacuum
B09087
Plug
Disconnect
- SFITHROTTLE BODY
SF-33
1142 Author
: Date
:
2001 AVALON (RM808U)
THROTTLE BODY
ON-VEHICLE INSPECTION
1. INSPECT THROTTLE BODY
Check that the throttle linkage moves smoothly.
2. INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the sensor connector.
(b) Disconnect the vacuum hose from the throttle body.
(c) Apply vacuum to the throttle opener.
(d) Using an ohmmeter, measure the resistance between
each terminal.
Resistance:
Throttle valve
conditionBetween
terminalsResistance
Fully closedVTA - E20.2 - 6.3 kW
Fully openVTA - E22.0 - 10.2 kW
-VC - E22.5 - 5.9 kW
(e) Reconnect the vacuum hose to the throttle body.
3. INSPECT THROTTLE OPENER
(a) Allow the engine to warm up to normal operating tempera-
ture.
(b) Check idle speed.
Idle speed: 650 ± 50 rpm
(c) Disconnect the vacuum hose from the throttle opener,
and plug the hose end.
(d) Check the throttle opener setting speed.
Throttle opener setting speed: 1,100 - 1,700 rpm
If the throttle opener setting is not as specified, replace the
throttle body.
(e) Stop the engine.
(f) Reconnect the vacuum hose to the throttle opener.
(g) Start the engine and check that the idle speed returns to
the correct speed.

SF0ZT-02
A10518
5 mm
Hexagon
Wrench
B09090
B09091(d)
(b)
(c)
(e)
B09092
(j)(g)
(h) (f)
(k) (i)
SF-36
- SFITHROTTLE BODY
1145 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
HINT:
At the time of installation, please refer to the following items.
Press down the V-bank cover fastener.
(c) Remove the V-bank cover.
3. REMOVE AIR CLEANER HOSE WITH RESONATOR
(a) Disconnect the PCV hose.
(b) Disconnect the vacuum hose (from the VSV for the active
engine control mount).
(c) Loosen the 3 hose clamps, and remove the air cleaner
hose with the resonator.
4. DISCONNECT ACCELERATOR CABLE AND
THROTTLE CABLE
5. REMOVE THROTTLE BODY
(a) Remove the bolt holding the throttle body to the throttle
body bracket.
Torque: 19.5 N´m (200 kgf´cm, 14 ft´lbf)
(b) Disconnect the throttle position sensor connector.
(c) Disconnect the IAC valve connector.
(d) Disconnect the wire clamp.
(e) Disconnect the brake booster vacuum hose.
(f) Disconnect the water bypass hose (from the intake man-
ifold).
(g) Disconnect the water bypass hose (from the water inlet
housing).
(h) Disconnect the air assist hose.
(i) Disconnect the fuel vapor feed hose (from the emission
control valve set).
(j) Disconnect the vacuum hose (from the No.1 ACIS VSV).
(k) Disconnect the vacuum hose (from the vacuum tank for
the ACIS).

SF16B-01
B06510
B06507
B06512
B06513
SF-40
- SFITHROTTLE BODY
1149 Author
: Date
:
2001 AVALON (RM808U)
REPLACEMENT
NOTICE:

Do not give a shock to the throttle position senor.

Do not disassemble or adjust the throttle opener.
1. REPLACE THROTTLE POTION SENSOR
(a) Remove the 2 screws and throttle position sensor.
(b) Reinstall a new throttle position sensor.
(1) Check that the throttle valve is fully close.
(2) Insert the sensor to the throttle body with it turned
counterclockwise by 30° to 60° against the fully-
close valve position.
(3) By turning the sensor clockwise, tighten the 2
screws.
2. REPLACE IAC VALVE
(a) Remove the 4 screws, bracket, IAC valve and gasket.
(b) Place a new gasket on the No.1 throttle body.
(c) Reinstall a new IAC valve with the 4 screws and bracket.
3. REPLACE THROTTLE BODIES
(a) Remove the 2 screws and protector.

SF101-02
B08628
Charcoal CanisterVapor Pressure Sensor
(Type A)Vapor Pressure Sensor
(Type B)
Vapor Pressure Sensor
Connector
Vacuum Hose
Fuel Hose
Vacuum Hose SF-74
- SFIVAPOR PRESSURE SENSOR
1183 Author
: Date
:
2001 AVALON (RM808U)
VAPOR PRESSURE SENSOR
COMPONENTS

SF06R-03
B08629
Disconnect
VC
E2Voltmeter
B08630
Type B
VacuumVacuum
PTNK E2 ECM Type A
Disconnect
DisconnectPressure
Pressure
- SFIVAPOR PRESSURE SENSOR
SF-75
1184 Author
: Date
:
2001 AVALON (RM808U)
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 OFF.
(e) Reconnect the vapor pressure sensor connector.
2. INSPECT POWER OUTPUT OF VAPOR PRESSURE
SENSOR
(a) Turn the ignition switch ON.
(b) Disconnect the fuel hose from the vapor pressure sensor.
(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) Turn the ignition switch OFF.
(e) Reconnect the fuel hose to the vapor pressure sensor.