2001 TOYOTA AVALON Service Repair Manual

B06677B09120B09122
No.2
Vacuum GaugeNo.1
Vacuum
Gauge
SF06B-05
B06678B09121B09123
Approx.
27.6 kPa No.2 No.1
Approx. 27.6 kPa
- SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF-53
1162 Author
: Date
:
2001 AVALON (RM808U)
ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)
ON-VEHICLE INSPECTION
INSPECT INTAKE AIR CONTROL VALVE
(a) Using a 3-way connector, connect vacuum gauge to the
actuator hose.
(b) Start the engine.
(c) While the engine is idling, check that the vacuum gauge
needle does not move.
(d) Rapidly depress the accelerator pedal to fully open posi-
tion and check that the vacuum gauge needle momentari-
ly fluctuates up to approx. 26.7 kPa (200 mmHg, 7.9
in.Hg). (The actuator rod is pulled out.)

SF06D-03
B06470
(a) (b)
B06471
- SFIACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF-57
1166 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
1. REMOVE NO.1 INTAKE AIR CONTROL VALVE (See
pages SF-36 and SF-40)
2. REMOVE NO.2 INTAKE AIR CONTROL VALVE
(a) Disconnect the actuator vacuum hose.
(b) Disconnect the DLC1 from the DLC1 bracket.
(c) Remove the intake air control valve.
(1) Remove the 4 nuts and DLC1 bracket, and discon-
nect the ground strap and cable.
(2) Remove the intake air control valve by prying a
screwdriver between the intake air control valve and
air intake chamber.
(3) Remove the gasket.

SF103-01
B06683
A/F Sensor Connector A/F Sensor
N´m (kgf´cm, ft´lbf) : Specified torque Bank 1 Sensor 1
44 (450, 32)
B06681
A/F Sensor Connector
A/F Sensor
N´m (kgf´cm, ft´lbf) : Specified torque Bank 2 Sensor 1
44 (450, 32)
LH Exhaust Manifold
Heat Insulator
SF-78
- SFIAIR-FUEL RATIO (A/F) SENSOR
1187 Author
: Date
:
2001 AVALON (RM808U)
AIR-FUEL RATIO (A/F) SENSOR
COMPONENTS

B06682
Bank 1 Sensor 1
Bank 2 Sensor 1
Ohmmeter +B
HT
+BHT Ohmmeter
SF104-01
- SFIAIR-FUEL RATIO (A/F) SENSOR
SF-79
1188 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
INSPECT HEATER RESISTANCE OF A/F SENSORS
(Bank 1 sensor 1, Bank 2 Sensor 1)
(a) Disconnect the A/F sensor connector.
(b) Using an ohmmeter measure the resistance between ter-
minals +B and HT.
Resistance:
At 20°C (68°F)0.8 - 1.4 W
At 800°C (1,472°F)1.8 - 3.2 W
If the resistance is not as specified, replace the sensor.
Torque: 44 N´m (450 kgf´cm, 32 ft´lbf)
(c) Reconnect the A/F sensor connector.

B09127
A/F Sensor
Heater
Relay
SF16D-01
S04947
Continuity
Ohmmeter
Ohmmeter
No Continuity 12
35
S04946
BatteryOhmmeter
Continuity 12
35
- SFIA/F SENSOR HEATER RELAY
SF-61
1170 Author
: Date
:
2001 AVALON (RM808U)
A/F SENSOR HEATER RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE A/F SENSOR HEATER RELAY (Marking: A/F
HTR)
3. INSPECT A/F SENSOR HEATER RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.
If there is no continuity, replace the relay.
(b) Check that there is no continuity between terminals 3 and
5.
If there is continuity, replace the relay.
4. INSPECT A/F SENSOR HEATER RELAY OPERATION
(a) Apply battery voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals 3 and 5.
If there is no continuity, replace the relay.
5. REINSTALL A/F SENSOR HEATER RELAY
6. REINSTALL RELAY BOX COVER

SF0MD-02
B09128
Cowl Side Trim Front Door Inside Scuff PlateCircuit Opening Relay
SF-62
- SFICIRCUIT OPENING RELAY
1171 Author
: Date
:
2001 AVALON (RM808U)
CIRCUIT OPENING RELAY
COMPONENTS

SF16E-01
S04947
Continuity
Ohmmeter
Ohmmeter
No Continuity 12
35
S04946
BatteryOhmmeter
Continuity 12
35
- SFICIRCUIT OPENING RELAY
SF-63
1172 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
1. REMOVE CIRCUIT OPENING RELAY
2. INSPECT CIRCUIT OPENING RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.
If there is no continuity, replace the relay.
(b) Check that there is no continuity between terminals 3 and
5.
If there is continuity, replace the relay.
3. INSPECT CIRCUIT OPENING RELAY OPERATION
(a) Apply battery voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals 3 and 5.
If there is no continuity, replace the relay.
4. REINSTALL CIRCUIT OPENING RELAY

SF0SM-05
B09119
V-Bank Cover

O-Ring

Non-reusable part
O-RingRH Camshaft Timing
Oil Control Valve
RH Camshaft Timing
Oil Control Valve
RH Camshaft Timing
Oil Control Valve Connector
LH Camshaft Timing
Oil Control Valve Connector
N´m (kgf´cm, ft´lbf) : Specified torque
7.5 (80, 66 in.´lbf)
- SFICAMSHAFT TIMING OIL CONTROL VALVE
SF-49
1158 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS