2001 TOYOTA AVALON Service Repair Manual

SF105-02
B09136
Passenger's Seat
Heated Oxygen Sensor
Connector
(Bank 1 Sensor 2) Connector
for Seat
37 (375, 27)
Heated Oxygen Sensor
(Bank 1 Sensor 2)
Grommet
44 (450, 32)
: Specified torqueN´m (kgf´cm, ft´lbf)
Bench Seat TypeExcept Bench Seat Type
37 (375, 27)
SF-80
- SFIHEATED OXYGEN SENSOR
1189 Author
: Date
:
2001 AVALON (RM808U)
HEATED OXYGEN SENSOR
COMPONENTS

B09137
Ohmmeter
+BHT
SF106-02
- SFIHEATED OXYGEN SENSOR
SF-81
1190 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
INSPECT HEATER RESISTANCE OF HEATED OXYGEN
SENSOR (Bank 1 Sensor 2)
(a) Remove the passenger's seat.
(b) Disconnect the oxygen sensor connector.
(c) Using an ohmmeter, measure the resistance between the
terminals +B and HT.
Resistance:
At 20°C (68°F)11 - 16 W
At 800°C (1,472°F)23 - 32 W
If the resistance is not as specified, replace the sensor.
Torque: 44 N´m (450 kgf´cm, 32 ft´lbf)
(d) Reconnect the oxygen sensor connector.
(e) Reinstall the passenger's seat.

SF067-05
B09118

Gasket
Throttle Body
Water Bypass
HoseAir Assist
Hose
N´m (kgf´cm, ft´lbf)

Non-reusable part: Specified torque
29 (300, 22)
Air Cleaner Hose
w/ Resonator Vacuum Hose
Accelerator Cable
IAC Valve
GasketThrottle BodyThrottle Body
Bracket
Throttle
Position
Sensor
Connector
IAC Valve
Connector V-Bank Cover
Vacuum Hose
19.5 (200, 14)
Brake Booster
Vacuum Hose
Fuel Vapor
Feed Hose
Throttle Cable
SF-44
- SFIIDLE AIR CONTROL (IAC) VALVE
1153 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS

SF0ZX-01
B06692
Open
ValveClose SF-46
- SFIIDLE AIR CONTROL (IAC) VALVE
1155 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
INSPECT IAC VALVE OPERATION
(a) Check that the IAC valve is halfly opened.
(b) Connect the IAC valve connector to the IAC valve.
(c) Turn the ignition switch ON.
(d) Check that the IAC valve moves in 0.5 seconds by order
of fully close, fully open and halfly open.
If operation is not as specified, replace the IAC valve.
(e) Turn the ignition switch OFF.
(f) Disconnect the IAC valve connector from the IAC valve.

SF06A-01
- SFIIDLE AIR CONTROL (IAC) VALVE
SF-47
1156 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
Installation is in the reverse order of removal (See page SF-45).

SF0ZW-01
A07285
E1DLC1
SST
TE1
DLC1
A07285
E1DLC1SST
TE1
DLC1
B06684
Disconnect
Plug
Plug
- SFIIDLE AIR CONTROL (IAC) VALVE
SF-43
1152 Author
: Date
:
2001 AVALON (RM808U)
IDLE AIR CONTROL (IAC) VALVE
ON-VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:

Engine at normal operating temperature

Idle speed checked correctly

Transmission in neutral position

A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843-18020
(c) After engine speed is kept at approx. 1,000 rpm for 5 se-
conds, 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 from the DLC1.
SST 09843-18020
2. INSPECT AIR ASSIST SYSTEM
(a) Initial conditions:

Engine at normal operating temperature

Idle speed checked correctly

Transmission in neutral position

A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
(c) After engine speed is kept at 900 - 1,300 rpm for 10 se-
conds, check that it returns to idle speed.
(d) Stop the engine.
(e) Remove the V-bank cover.
(f) Disconnect the air assist hose from the air pipe, and block
off the IAC valve exit and the entry to the pipe.
(g) Start the engine and check that the idle speed reaches
500 rpm or below (the engine may stall).
If the idle does not reach 500 rpm or below, check for a leak be-
tween the air assist hoses, pipe and injectors.
(h) Remove the SST from the DLC1.
SST 09843-18020
(i) Reconnect the air assist hose to the air pipe.
(j) Reinstall the V-bank cover.

SF068-03
B06512
- SFIIDLE AIR CONTROL (IAC) VALVE
SF-45
1154 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
1. REMOVE THROTTLE BODY (See page SF-36)
2. REMOVE IAC VALVE
Remove the 4 screws, bracket, IAC valve and gasket.
HINT:
At the time of installation, please refer to the following items.
Place a new gasket on the throttle body.

SF073-04
B09080
PS Pressure Tube
19.5 (200, 14)39 (400, 19)
Throttle Position
Sensor Connector
Accelerator Cable
IAC Valve Connector
Water Bypass
Hose
Vacuum Hose

Gasket PCV Hose
Air Intake Chamber
Assembly
43 (440, 32)
Throttle Body Bracket
No.1 Engine
Hanger
Ground Cable
Ground Cable
Ground Strap
VSV Connector for No.2 ACIS Purge Hose
Air Assist Hose and Pipe
19.5 (200, 14)

Retainer
Injector Connector Delivery Pipe10 (100, 7)
Spacer

O-Ring

Grommet
Injector

Insulator

O-RingV-Bank Cover
Brake Booster
Vacuum HoseVSV Connector
for No.1 ACIS
VSV Connector
for EVAP
DLC1
Fuel Hose Clamp
Fuel Inlet Hose
N´m (kgf´cm, ft´lbf): Specified

Non-reusable partAir Cleaner Hose
w/ Resonator
Throttle Cable
SF-20
- SFIINJECTOR
1129 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS