Page 1446 of 1897
- 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
Page 1563 of 1897
SS0EI-02
- SERVICE SPECIFICATIONSEMISSION CONTROL
SS-1 1
127 Author: Date:
2001 AVALON (RM808U)
EMISSION CONTROL
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Charcoal canister x Body39.240029
LH exhaust manifold x Cylinder head4950063
LH exhaust manifold x A/F sensor4445033
Front exhaust pipe x Exhaust manifold6263046
Front exhaust pipe x Center exhaust pipe5657041
Front exhaust pipe stay x Front exhaust pipe support bracket3333024
Center exhaust pipe x Tail pipe4344032
Heated oxygen sensor x Front exhaust pipe4445033
Page 1579 of 1897
SS0EJ-02
SS-12
- SERVICE SPECIFICATIONSSFI
128 Author: Date:
2001 AVALON (RM808U)
SFI
SERVICE DATA
Fuel pressure
regulatorFuel pressure at no vacuum301 - 347 kPa (3.1 - 3.5 kgf/cm2, 44 - 50 psi)
Fuel pumpResistance at 20°C (68°F)0.2 - 3.0 W
InjectorResistance at 20°C (68°F)
Injection volume
Difference between each cylinder
Fuel leakage13.4 - 14.2 W
60 - 73 cm3 (3.4 - 4.5 cu in.) per 15 sec.
13 cm3 (0.8 cu in.) or less
1 drop or less per 12 minutes
MAF meterResistance (THA - E2) at -20°C (-4°F)
at 20°C (68°F)
at 60°C (140°F)13.6 - 18.4 kW
2.21 - 2.69 kW
0.49 - 0.67 kW
Throttle bodyThrottle opener setting speed1,100 - 1,700 rpm
Throttle
position
sensorResistance
Throttle valve fully closed VTA - E2
Throttle valve fully open VTA - E2
- VC - E2
0.2 - 6.3 kW
2.0 - 10.2 kW
2.5 - 5.9 kW
Camshaft
timing oil control
valveResistance at 20°C (68°F)6.9 - 7.9 W
VSV for EVAPResistance at 20°C (68°F)27 - 33 W
VSV for ACISResistance at 20°C (68°F)33 - 39 W
VSV for canister
closed valveResistance at 20°C (68°F)
at 120°C (248°F)25 - 30 W
33 - 42 W
VSV for pressure
switching valveResistance at 20°C (68°F)
at 120°C (248°F)37 - 44 W
51 - 62 W
Vapor
Pressure
SensorPower source voltage4.5 - 5.5 V
ECT sensorResistance at -20°C (-4°F)
at 0°C (32°F)
at 20°C (68°F)
at 40°C (104°F)
at 60°C (140°F)
at 80°C (176°F)10 - 20 kW
4 - 7 kW
2 - 3 kW
0.9 - 1.3 kW
0.4 - 0.7 kW
0.2 - 0.4 kW
A/F sensorHeater coil resistance at 20°C (68°F)
at 800°C (1472°F)0.8 - 1.4 W
1.8 - 3.2 W
Heated
oxygen sensorHeater coil resistance at 20°C (68°F)
at 800°C (1472°F)11 - 16 W
23 - 32 W
Fuel cut rpmFuel return rpm1,200 rpm
Page 1580 of 1897
SS0EK-02
- SERVICE SPECIFICATIONSSFI
SS-13
129 Author: Date:
2001 AVALON (RM808U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Fuel line (Union bolt type)2930021
Fuel line (Flare nut type) using SST2828521
Fuel pump assembly x Fuel tank44035 in.´lbf
Fuel filter x Fuel pump bracket2.02017 in.´lbf
Fuel pressure regulator x Fuel pump bracket2.02017 in.´lbf
Delivery pipe x Intake manifold101007
No.1 fuel pipe x Intake manifold19.520014
Fuel tank band x Body3940029
Throttle body x Throttle body bracket19.520014
Throttle body x Air intake chamber19.520014
Throttle body x No.1 intake air control valve6.97061 in.´lbf
Camshaft timing oil control valve x Cylinder head7.58066 in.´lbf
No.2 intake air control valve x Air intake chamber14.514510
ECT sensor x Water outlet2020014
Knock sensor x Cylinder block3940029
A/F sensor x Exhaust manifold4444032
Heated oxygen sensor x Exhaust pipe4444031
Page 1613 of 1897
SF0LR-02
B09083
Heated Oxygen Sensor (Bank 1 Sensor 2)
Before installing the heated oxygen sensor,
twist the sensor wire counterclockwise
3 and 1/2 turns. HINT:
After installing the heated oxygen sensor,
check that the sensor wire is not twisted,
if it is twisted,remove the heated oxygen
sensor and reinstall it. The Location of Fuel Tank Cushion
No.1 Fuel Tank
Protector
Fuel Tank Vent
Tube Set Plate
Fuel Pump
Fuel Outlet Tube
Fuel TankFuel Inlet Hose
Fuel Inlet Pipe Fuel Inlet Pipe Shield
Fuel Tank Cap
Fuel Inlet Pipe Protector
Heated Oxygen Sensor
(Bank 1 Sensor 2)Heat Insulator Fuel Tank Band
Center Exhaust Pipe Gasket Gasket Gasket
Non-reusable part
N´m (kgf´cm, ft´lbf): Specified torque
39 (400, 29)
44 (450, 33)
43 (440, 32)
x 8
Gasket
Compression
Spring
43 (440, 32)
EVAP Line Hose
Vent Line Hose
Charcoal
Canister
- SFIFUEL TANK AND LINE
SF-27
1136 Author: Date:
2001 AVALON (RM808U)
FUEL TANK AND LINE
COMPONENTS
CAUTION:
Always use new gaskets when replacing the fuel tank or component parts.
Apply the proper torque to all parts tightened.
Page 1625 of 1897
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
Page 1626 of 1897
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.
Page 1646 of 1897
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.
