2001 TOYOTA AVALON Service Repair Manual

S04583
S05040
Vinyl Bag
S05382
Retainer
S05050
Click Sound SF-4
- SFISFI SYSTEM
111 3 Author
: Date
:
2001 AVALON (RM808U)
(3) When the connector and the pipe are stuck, pinch
the retainer between the hands, push and pull the
connector to free to disconnect and pull it out. Do
not use any tool at this time.
(4) Inspect if there is any dirt or the likes on the seal sur-
face of the disconnected pipe and clean it away.
(5) Prevent the disconnected pipe and connector from
damaging and mixing foreign objects by covering
them with a vinyl bag.
(g) Observe these precautions when connecting the fuel
tube connector (quick type).
(1) Do not reuse the retainer removed from the pipe.
(2) Must use hands without using tools when to remove
the retainer from the pipe.
(3) Check if there is any damage or foreign objects on
the connected part of the pipe.
(4) Match the axis of the connector with axis of the pipe,
and push in the connector until the retainer makes
a ºclickº sound. In case that the connections is tight,
apply little amount of new engine oil on the tip of the
pipe.
(5) After having finished the connection, check if the
pipe and the connector are securely connected by
pulling them.
(6) Check if there is any fuel leakage.
(h) Observe these precautions when handling nylon tube.
(1) Pay attention not to turn the connector with force
when connecting them.
(2) Pay attention not to kink the nylon tube.
(3) Do not remove the EPDM protector on the outside
of the nylon tube.
(4) Must not close the piping with the nylon tube by
bending it.
Before installing the injector, must apply spindle oil
or gasoline on the place where a delivery pipe or an
intake manifold touches an O-ring of the injector.

A10838
TOYOTA Hand-Held Tester
DLC3
- SFISFI SYSTEM
SF-5
111 4 Author
: Date
:
2001 AVALON (RM808U)
(i) Check that there are no fuel leaks after performing main-
tenance anywhere on the fuel system.
(1) Connect a TOYOTA hand-held tester to the DLC3.
(2) Turn the ignition switch ON and TOYOTA hand-
held tester main switch ON.
NOTICE:
Do not start the engine.
(3) Select the active test mode on the TOYOTA hand-
held tester.
(4) Please refer to the TOYOTA hand-held tester oper-
ator 's manual for further details.
(5) If you have no TOYOTA hand-held tester, connect
the positive (+) and negative (-) leads from the bat-
tery to the fuel pump connector (See page
SF-6).
(6) Check that there are no leaks from any part of the
fuel system.
(7) Turn the ignition switch to LOCK.
(8) Disconnect the TOYOTA hand-held tester from the
DLC3.

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)

SF0ZU-02
B09094
Must Have
ClearanceMust Have
No Clearance
B05131
Close Side
Open Side
B05132
Fully Opening
Feeler
Gauge
(Close Side)
Adjust Screw SF-38
- SFITHROTTLE BODY
1147 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
NOTICE:
In case of changing, removing or installing the throttle
body or IAC valve, must do this.
1. INSPECT THROTTLE BODY
(a) Check that there is no clearance between each throttle
stop screw and the throttle lever when applying the vacu-
um (53.3 kPa (400 mmHg, 15.7 in.Hg)) to the throttle
opener using a MITYVAC (Hand-Held Vacuum Pump).
Standard: Must have no clearance
NOTICE:
As the throttle stop screw is precisely adjusted, so do not
adjust it.
(b) Under the condition of (1), check visually that there is a
clearance between each adjust screw and the throttle le-
ver on No.1 side.
Adjust screwReference value
Close sideAbout 0.13 mm (0.0051 in.)
Open sideAbout 0.22 mm (0.0087 in.)
(c) Measure the clearance between the adjust screw on the
close side when fully opening the throttle lever on No.2
side by hand and the throttle lever on No.1 side with a
feeler gauge.
Standard value: 0.25 - 0.45 mm (0.0098 - 0.0177 in.)
In case of being out of standard value, perform the ad-
justment of step 2.

B09116
Throttle Stop ScrewAdjust Screw
(Close Side)
Adjust Screw
(Open Side)
B05184
Close Side
Open Side
- SFITHROTTLE BODY
SF-39
1148 Author
: Date
:
2001 AVALON (RM808U)
2. ADJUST THROTTLE BODY (BALANCE)
NOTICE:
Do not adjust the throttle stop screw and throttle opener.
(a) Beforehand checking.
Recheck 1 - (a).
(b) Adjustment of the adjust screw on the open side.
(1) Using a 2 mm hexagon wrench, loosen the lock nut
and screw, make clearance between the screw tip
and the throttle lever on No.1 side.
(2) Turn the screw to the screw torque direction gradu-
ally, and stop it at the position where to touch the le-
ver at the very moment.
NOTICE:
If turning it too much to the torque direction, the No.1 lever
goes off from the throttle stop screw causing the adjust-
ment failure.
(3) Turn it back from the position where it touches the
lever to the screw loosing direction.
Standard: Turn it back by rotating 1/4
(4) Tighten the lock nut.
(c) Adjustment of the adjust screw on the close side.
(1) Loosen the lock nut and screw, and make clearance
between the screw tip and the throttle lever on No.1
side.
(2) Turn the screw to the screw torque direction gradu-
ally, and stop it at the position where to touch the le-
ver at the very moment.
NOTICE:
If turning it too much to the torque direction, the No.2 lever
goes off from the throttle stop screw causing the adjust-
ment failure.
(3) Turn it back from the position where it touches the
lever to the screw loosing direction.
Standard: Turn it back by rotating 1/2 - 3/4
(4) Tighten the lock nut.
(d) Completion checking.
Check 1 - (c).

SF065-03
SF-42
- SFITHROTTLE BODY
1151 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
Installation is in the reverse order of removal (See page SF-36).

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.