2001 TOYOTA AVALON air filter

EM-2
- ENGINE MECHANICALCO/HC
986 Author
: Date
:
2001 AVALON (RM808U)
If the CO/HC concentration does not comply with regulations,
troubleshoot in the order given below.
See the table below for possible causes, and then inspect and
correct the applicable causes if necessary.
COHCProblemsCauses
NormalHighRough idle3. Faulty ignitions:

Incorrect timing

Fouled, shorted or improperly gapped plugs
4. Incorrect valve clearance
5. Leaky intake and exhaust valves
6. Leaky cylinders
LowHighRough idle
(Fluctuating HC reading)1. Vacuum leaks:

PCV hoses

Intake manifold

Air intake chamber

Throttle Body

IAC valve

Brake booster line
2. Lean mixture causing misfire
HighHighRough idle
(Black smoke from exhaust)1. Restricted air filter
2. Plugged PCV valve
3. Faulty SFI systems:

Faulty pressure regulator

Defective ECT sensor

Faulty ECM

Faulty injectors

Faulty throttle position sensor

Faulty MAF meter

A07428
86
5 43 2
1
910
7
117
A09699
8 mm Hexagon Wrench
A09695
Throttle Body
Bracket
Engine
Hanger
EM-68
- ENGINE MECHANICALCYLINDER HEAD
1052 Author
: Date
:
2001 AVALON (RM808U)
26. INSTALL INTAKE MANIFOLD ASSEMBLY
(a) Install the intake manifold, delivery pipe and injectors as-
sembly with the 9 bolts, 2 plate washers and 2 nuts. Uni-
formly tighten the bolts and nuts in several passes and in
the sequence shown.
Torque: 15 N´m (150 kgf´cm, 11 ft´lbf)
(b) Connect the fuel inlet hose to the fuel filter.
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precaution.
(See page SF-1)
(c) Connect the heater hose to the intake manifold.
27. RETIGHTEN WATER OUTLET MOUNTING BOLTS
AND NUTS
Tighten the 2 bolts and 2 nuts.
Torque: 15 N´m (150 kgf´cm, 11 ft´lbf)
28. INSTALL AIR INTAKE CHAMBER ASSEMBLY
(a) Using an 8 mm hexagon wrench, install a new gasket and
the air intake chamber assembly with the 2 bolts and 2
nuts. Uniformly tighten the bolts and nuts in several
passes.
Torque: 43 N´m (440 kgf´cm, 32 ft´lbf)
(b) Install the No.1 engine hanger with the 2 bolts.
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
(c) Install the throttle body bracket with the 2 bolts.
Torque: 19.5 N´m (200 kgf´cm, 14 ft´lbf)
(d) Connect the PCV hose to the PCV valve on the RH cylin-
der head.
(e) Connect the ground strap and cable to the intake air con-
trol valve for the ACIS.
(f) Connect the ground cable and strap with the nut.
Torque: 14.5 N´m (145 kgf´cm, 10 ft´lbf)
(g) Connect the ground cable to the air intake chamber.
(h) Connect the brake booster vacuum hose to the throttle
body.
(i) Connect the 2 water bypass hoses to the throttle body.
(j) Connect the air assist hose to the throttle body.
(k) Connect the purge hose to the emission control valve set.
(l) Connect the 2 vacuum hoses to the vacuum tank for
ACIS.
(m) Connect the engine wire clamp to the emission control
valve set.

A07505
(p)
(q)
(r)(o)
(n)
(m)
(n)
A09695
Throttle Body
Bracket
Engine
Hanger
A09699
8 mm Hexagon Wrench
A05074(b) (c)
EM-32
- ENGINE MECHANICALCYLINDER HEAD
1016 Author
: Date
:
2001 AVALON (RM808U)
(m) Disconnect the brake booster vacuum hose from the
throttle body.
(n) Disconnect the 2 water bypass hoses from the throttle
body.
(o) Disconnect the air assist hose from the throttle body.
(p) Disconnect the purge hose from the pipe on the emission
control valve set.
(q) Disconnect the 2 vacuum hoses from the vacuum tank for
the ACIS.
(r) Disconnect the engine wire clamp from the emission con-
trol valve set.
(s) Remove the 2 bolts and No.1 engine hanger.
(t) Remove the 2 bolts and throttle body bracket.
(u) Using an 8 mm hexagon wrench, remove the 2 bolts, 2
nuts, the air intake chamber assembly and gasket.
9. REMOVE INTAKE MANIFOLD ASSEMBLY
(a) Disconnect the 6 injector connectors.
(b) Disconnect the fuel inlet hose from the fuel filter.
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precautions.
(See page SF-1)
(c) Disconnect the heater hose from the intake manifold.

EM0ZK-02
A10837
No.2 Cooling Fan Connector
Upper Radiator
Support
Radiator
Assembly RH Fender
Apron
Seal
Generator
Drive
Belt
A/C Compressor
Connector
Battery
Insulator
Battery
Battery
Tray Generator Drive
Belt Adjusting
Bar Bracket
LH Fender
Apron Seal

Gasket A/C Compressor
43 (440, 32)
25 (250, 18)

Non-reusable partStay
N´m (kgf´cm, ft´lbf) Front Exhaust Pipe: Specified torque
Gasket
62 (630, 46)
33 (330, 24)


62 (630, 46)
43 (430, 32)

Gasket
Actuator Cover No.3 Engine Room
Relay BlockHood
Hold-Down
Clamp
Washer
Hose for
Windshield
Air Filter
Air Cleaner Case
O-Ring
Drain Plug Lower Radiator
SupportAir Cleaner
Cap Assembly Radiator Upper Hose
Cruise Control
Actuator
Cruise Control
Actuator
ConnectorAccelerator Cable
PS Pump

PS Pump
Drive Belt
Compression Spring
V-Bank Cover
A/T Oil Cooler Hose
Radiator Lower
HoseEVAP Hose
Assembly
MAF Meter Connector
VSV for Active
Control Engine
Mount
No.1 ECT Switch Wire Connector
No.1 Cooling Fan Connector
Vacuum Hose
Air Hose
EM-70
- ENGINE MECHANICALENGINE UNIT
1054 Author
: Date
:
2001 AVALON (RM808U)
ENGINE UNIT
COMPONENTS

IN0253
WRONG CORRECT
IN0252
WRONG CORRECT IN-6
- INTRODUCTIONREPAIR INSTRUCTIONS
6 Author
: Date
:
2001 AVALON (RM808U)
(k) Care must be taken when jacking up and supporting the
vehicle. Be sure to lift and support the vehicle at the prop-
er locations (See page IN-8).
Cancel the parking brake on the level place and
shift the transmission in Neutral (or N position).
When jacking up the front wheels of the vehicle at
first place stoppers behind the rear wheels.
When jacking up the rear wheels of the vehicle at
first place stoppers before the front wheels.
When either the front or rear wheels only should be
jacked up, set rigid racks and place stoppers in front
and behind the other wheels on the ground.
After the vehicle is jacked up, be sure to support it
on rigid racks . It is extremely dangerous to do any
work on a vehicle raised on a jack alone, even for
a small job that can be finished quickly.
(l) Observe the following precautions to avoid damage to the
following parts:
(1) Do not open the cover or case of the ECU unless
absolutely necessary. (If the IC terminals are
touched, the IC may be destroyed by static electric-
ity.)
(2) To disconnect vacuum hoses, pull off the end, not
the middle of the hose.
(3) To pull apart electrical connectors, pull on the con-
nector itself, not the wires.
(4) Be careful not to drop electrical components, such
as sensors or relays. If they are dropped on a hard
floor, they should be replaced and not reused.
(5) When steam cleaning an engine, protect the elec-
tronic components, air filter and emission-related
components from water.
(6) Never use an impact wrench to remove or install
temperature switches or temperature sensors.

- INTRODUCTIONTERMS
IN-41
41 Author
: Date
:
2001 AVALON (RM808U) HO2S
Heated Oxygen SensorHeated Oxygen Sensor (HO2S)
IACIdle Air ControlIdle Speed Control (ISC)
IATIntake Air TemperatureIntake or Inlet Air Temperature
ICMIgnition Control Module-
IFIIndirect Fuel InjectionIndirect Injection (IDL)
IFSInertia Fuel-Shutoff-
ISCIdle Speed Control-
KSKnock SensorKnock Sensor
MAFMass Air FlowAir Flow Meter
MAPManifold Absolute PressureManifold Pressure
Intake Vacuum
MCMixture Control
Electric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDPManifold Differential Pressure-
MFIMultiport Fuel InjectionElectronic Fuel Injection (EFI)
MILMalfunction Indicator LampCheck Engine Lamp
MSTManifold Surface Temperature-
MVZManifold Vacuum Zone-
NVRAMNon-V olatile Random Access Memory-
O2SOxygen SensorOxygen Sensor, O2 Sensor (O2S)
OBDOn-Board DiagnosticOn-Board Diagnostic System (OBD)
OCOxidation Catalytic ConverterOxidation Catalyst Convert (OC), CCo
OPOpen LoopOpen Loop
PAIRPulsed Secondary Air InjectionAir Suction (AS)
PCMPowertrain Control Module-
PNPPark/Neutral Position-
PROMProgrammable Read Only Memory-
PSPPower Steering Pressure-
PTOXPeriodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAMRandom Access MemoryRandom Access Memory (RAM)
RMRelay Module-
ROMRead Only MemoryRead Only Memory (ROM)
RPMEngine SpeedEngine Speed
SCSuperchargerSupercharger
SCBSupercharger BypassE-ABV
SFISequential Multiport Fuel InjectionElectronic Fuel Injection (EFI), Sequential Injection
SPLSmoke Puff Limiter-
SRIService Reminder Indicator-
SRTSystem Readiness Test-
STScan Tool-
TBThrottle BodyThrottle Body
TBIThrottle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TCTurbochargerTurbocharger
TCCTorque Converter ClutchTorque Converter

MA01M-02
P00495
Inside Outside
- MAINTENANCEENGINE
MA-5
47 Author
: Date
:
2001 AVALON (RM808U)
ENGINE
INSPECTION
HINT:
Inspect these items when the engine is cold.
1. REPLACE TIMING BELT (See page EM-15)
2. INSPECT DRIVE BELTS
(See pages CH-1, SR-3 and AC-17)
3. REPLACE SPARK PLUGS (See page IG-1)
4. INSPECT AIR FILTER
(a) Visually check that the air filter is not excessively dirty or
oily.
(b) Clean the air filter with compressed air.
First blow from the inside thoroughly, then blow off the
outside of the air filter.
5. REPLACE AIR FILTER
Replace the air filter with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
(See page LU-3)
7. REPLACE ENGINE COOLANT (See page CO-2)
8. REPLACE GASKET IN FUEL TANK CAP
(See page EC-6)
9. INSPECT FUEL LINES AND CONNECTIONS
(See page EC-6)
10. INSPECT EXHAUST PIPES AND MOUNTINGS
(See page EC-14)
11. ADJUST VALVE CLEARANCE (See page EM-4)

SS0EG-02
- SERVICE SPECIFICATIONSENGINE MECHANICAL
SS-9
125 Author
: Date
:
2001 AVALON (RM808U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Timing belt plate x Oil pump88069 in.´lbf
No.1 idler pulley x Oil pump3435025
No.2 idler pulley x No.2 idler pulley bracket4344032
Camshaft timing pulley x Camshaft
for SST125
881,300
90094
65
Timing belt tensioner x Oil pump2728020
RH engine mounting bracket x Cylinder block2829021
No.2 timing belt cover x No.3 timing belt cover8.58574 in.´lbf
No.1 timing belt cover x Oil pump8.58574 in.´lbf
Crankshaft pulley x Crankshaft2152,200159
No.2 generator bracket x Engine RH mounting bracket2829021
Cylinder head x Cylinder block 12 pointed head 1st
2nd
Recessed head54
Turn 90°
18.5550
Turn 90°
18540
Turn 90°
13
Camshaft bearing cap x Cylinder head1616012
Cylinder head cover x Cylinder head88069 in.´lbf
Exhaust manifold x Cylinder head4950036
Exhaust manifold stay x Exhaust manifold California
Except California34
20350
20025
15
Exhaust manifold stay x Transmission housing California
Except California34
20350
20025
15
No.1 EGR pipe x RH exhaust manifold121209
No.1 EGR pipe x EGR cooler121209
PS pump bracket x RH cylinder head4344032
Oil dipstick guide x LH cylinder head88069 in.´lbf
Water inlet pipe x LH cylinder head19.520014
Cylinder head rear plate x LH cylinder head88069 in.´lbf
No.3 timing belt cover x Cylinder head8.58574 in.´lbf
Water outlet x Intake manifold1515011
Fuel inlet hose x Fuel filter2930021
Intake manifold x Cylinder head1515011
Air intake chamber x Intake manifold4344032
No.2 EGR pipe x Air intake chamber121209
No.2 EGR pipe x EGR cooler121209
No.1 engine hanger x Air intake chamber3940029
No.1 engine hanger x RH cylinder head3940029
Air intake chamber stay x Air intake chamber19.520014
Air intake chamber stay x RH cylinder head19.520014
Main bearing cap x Cylinder block 12 pointed head 1st
2nd
6 pointed head22
Turn 90°
27225
Turn 90°
27516
Turn 90°
20
Connecting rod cap x Connecting rod 1st
2nd24.5
Turn 90°250
Turn 90°18
Turn 90°
Rear oil seal retainer x Cylinder block88069 in.´lbf
EGR cooler x Cylinder block99078 in.´lbf