fuel cap TOYOTA AVENSIS 2005 Service Repair Manual

022J5±01
± PREPARATIONENGINE CONTROL SYSTEM
02±3
AVENSIS REPAIR MANUAL (RM1018E)
ENGINE CONTROL SYSTEM
PREPARATION
SST
09268±21010Fuel Hose PullerKNOCK SENSOR(1AZ±FE)
Recomended Tools
09082±00040TOYOTA Electrical TesterSFI SYSTEM(1AZ±FE)
SFI SYSTEM(1AZ±FSE)
SFI SYSTEM(1ZZ±FE/3ZZ±FE)
(09083±00150)Test Lead SetSFI SYSTEM(1AZ±FE)
SFI SYSTEM(1AZ±FSE)
SFI SYSTEM(1ZZ±FE/3ZZ±FE)
Equipment
Ohmmeter
Radiator cap tester
Service Wire Harness
Torque wrench
Vernier calipers
Voltmeter

02±6
± PREPARATIONFUEL
AVENSIS REPAIR MANUAL (RM1018E)
09082±00040TOYOTA Electrical TesterFUEL SYSTEM(1CD±FTV)
FUEL SYSTEM(1ZZ±FE/3ZZ±FE)
(09083±00150)Test Lead SetFUEL SYSTEM(1AZ±FE)
FUEL SYSTEM(1AZ±FSE)
FUEL SYSTEM(1ZZ±FE/3ZZ±FE)
09130±00150Water Pump PliersFUEL FILTER ASSY(1CD±FTV)
09216±00021Belt Tension GaugeINJECTION OR SUPPLY PUMP
ASSY(1CD±FTV)
Equipment
Clip
Hexagon wrench (6 mm)
Measuring Flask
Ohmmeter
Radiator cap tester
Service Wire Harness
Stopwatch
Torque wrench
Vernier calipers
Wooden block
SSM
08826±00080Seal Packing Black or equivalent
(FIPG)INJECTOR ASSY(1CD±FTV)
08850±00065Butyl Tape SetFUEL TANK ASSY(DIESEL)

±
SERVICE SPECIFICATIONS ENGINE MECHANICAL
03±19
AVENSIS REPAIR MANUAL (RM1018E)Part Tightened
ft
lbf
kgf
cm
N
m
Camshaft timing sprocket x Camshaft5455140
Camshaft bearing cap No. 1 x Cylinder head3030122
Camshaft bearing cap No. 2 x Cylinder head3030122
Camshaft bearing cap No. 3 x Cylinder head9.09280 in.
lbf
Chain tensioner assy No. 1 x Timing chain cover9.09280 in.
lbf
Chain tensioner plate x Stiffening crankcase assy121229
Oil pump drive sprocket x Oil pump3030122
Chain vibration damper No. 1 x Cylinder head9.09280 in.
lbf
Chain vibration damper No. 1 x Cylinder block9.09280 in.
lbf
Timing chain guide x Cylinder block9.09280 in.
lbf
Chain tensioner slipper x Cylinder block1919414
Timing chain cover (See page 14±222)Bolt A
Bolt B
Bolt C Nut9.021
43
9.092
214
438 9280 in.
lbf
15
32
80 in.
lbf
Oil pan x Stiffening crankcase assy9.09280 in.
lbf
Oil pan drain plug x Oil pan2525518
Crankshaft pulley x Crankshaft1701,733125
Cylinder head cover x Cylinder head Bolt A
Bolt B
Bolt C11
14
2111 2
143
2148.0 10
15
1CD±FTV:
Part TightenedN
mkgf
cmft
lbf
Idle pulley set nut3839028
Air tube No. 1 x Air tube No. 22525518
Air tube No. 1 x Intake air connector2525518
Air tube No. 1 x Cylinder head sub±assy2525518
Air tube No. 1 x Engine mounting bracket FR2525518
Engine cover No. 1 x Cylinder head cover sub±assy8.08271 in.
lbf
Engine cover No. 1 x Intake manifold8.08271 in.
lbf
Front wheel1031,05076
Drain plug (Manual transaxle)4950036
Engine hanger No.1 x Cylinder head3737727
Engine hanger No.2 x Cylinder head3737727
Engine hanger No. 1 UPR x Engine hanger No. 13737727
Engine coolant temperature sensor x Cylinder head2020415
Crankshaft position sensor x Oil pump assy8.89078 in.
lbf
Camshaft position sensor x Camshaft oil seal retainer8.89078 in.
lbf
Fuel filler to injection pump fuel pipe x Cylinder block M6 and Nut
M88.82190
20978 in.
lbf
15
Oil cooler pipe x Cylinder block5960043
Compressor mounting bracket x Cylinder block4242831
Injection pump x Water pump2121415
Oil level gage guide x Cylinder block1818413
Timing belt No.3 cover x Cylinder head7.47565 in.
lbf
Intake manifold x Cylinder head2121415
Wiring harness clamp bracket x Intake manifold3.9 to 6.940 to 7035 to 61 in.
lbf
Power steering idle pulley bracket x Cylinder head Bolt A
Bolt B72
39734
39853
29
Intake manifold insulator No. 1 x Intake manifold5.05144 in.
lbf

B62793
Reference (Bank 1 Sensor 1 System Drawing)A/F Sensor
A/F Relay
Heater
Sensor A1A+ HA1A
Duty
Control
ECM
From
Battery A/F Fuse
A1A±
MREL
05±182
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0031/21OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 1)
DTCP0032/21OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)
DTCP0051/28OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW (BANK 2 SENSOR 1)
DTCP0052/28OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 2 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P2237/21 on page 05±248.
HINT:

These DTCs are related to the air fuel raito (A/F) sensor, although the caption is the heated oxygen
sensor.

The ECM provides a pulse width modulated control circuit to adjust curre\
nt through the heater. The
heated oxygen sensor heater circuit uses a relay on the B+ side of the c\
ircuit.
DTC No.DTC Detection ConditionTrouble Area
P0031/21
P0051/28Heated current is 0.8 A or less when heater operates
(1 trip detection logic)
Open or short in heater circuit of A/F sensor

A/F sensor heater
P0032/21
P0052/28When the heater operates, heated current exceeds 19.7 A
(1 trip detection logic)
A/F relay

ECM
HINT:

Bank 1 refers to the bank that includes cylinder No.1.

Bank 2 refers to the bank that does not include cylinder No.1.

Sensor 1 refers to the sensor closest to the engine assembly.

Sensor 2 refers to the sensor farthest away from the engine assembly.
05C6T±01

A73819A±A SectionAirSolid Electrolyte
(Zirconia Element)
Platinum
Electrode Heater
Exhaust Gas
Cover Element
A
A
ECM Monitored
A/F Sensor Voltage
Air±Fuel Ratio
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±249
AVENSIS REPAIR MANUAL (RM1018E)
DTC P2255/28 OXYGEN SENSOR REFERENCE GROUND
CIRCUIT LOW (FOR A/F SENSOR)(BANK 2
SENSOR 1)
DTC P2256/28 OXYGEN SENSOR REFERENCE GROUND
CIRCUIT HIGH (FOR A/F SENSOR)(BANK 2
SENSOR 1)
CIRCUIT DESCRIPTION
HINT:
This DTC is recorded when A/F sensor has a malfunction, although the caption is healed oxygen sensor.
The air±fuel ratio sensor are the lamination type. Compared to the conventional type, the sensor and heater
portions of the lamination type are narrower overall. Because the heat of the heater acts directly on the alumi-
na and zirconia (of the sensor portion) it accelerates the activation of the sensor.
To obtain a high purification rate of the CO, HC and NOx components of the exhaust gas, a three±way cata-
lytic converter is used. For the most efficient use of the three±way catalytic converter, the air±fuel ratio must
be precisely controlled so that it is always close to the stoichiometric air±fuel ratio.
The A/F sensor has the characteristic that it provides output voltage* being approximately proportional to
the existing air±fuel ratio. The A/F sensor output voltage* is used to provide feedback for the ECM to control
the air±fuel ratio.
By the A/F sensor output, the ECM can determine the deviation amount from the stoichiometric air±fuel ratio
and control the proper injection time immediately. If the A/F sensor is out of order, ECM is unable to perform
the accurate air±fuel ratio control.
The A/F sensor is equipped with a heater which heats the zirconia element. The heater is controlled by the
ECM. When the intake air volume is low (the temperature of the exhaust gas is low), the current flows to the
heater to heat the sensor for the accurate oxygen concentration detection.
*: The voltage value changes at the inside of the ECM only.

A77873
(a)
(c)
(b)
(d)
(h)
(i)
(g)
(g)
(f)
(e)
Air cleaner clamp
(c)
A77874
± ENGINE CONTROL SYSTEMTHROTTLE BODY ASSY (1AZ±FE)
10±27
AVENSIS REPAIR MANUAL (RM1018E)
5. REMOVE AIR CLEANER CAP SUB±ASSY
(a) Disconnect the mass air flow meter connector.
(b) Disconnect the VSV connector.
(c) Remove the 2 wire harness clamps.
(d) Disconnect the ventilation hose.
(e) Disconnect the fuel vapor feed hose No. 1.
(f) Disconnect the fuel vapor feed hose N0. 2.
(g) Remove the fuel vapor feed hose No. 2 from 2 clamps of
the air cleaner hose.
(h) Lock the hose clamp as shown in the illustration.
(i) Raise the air cleaner clamp up, slide it to the air cleaner
cap.
(j) Remove the air cleaner cap together with air cleaner hose
No. 1.
6. SEPARATE ACCELERATOR CONTROL CABLE ASSY
(a) Loosen the nut and separate the accelerator control
cable.

A77879
45

A77880
83.8 mm
(3.299 in.)
Rotation
Center of
Throttle Link
±
ENGINE CONTROL SYSTEM THROTTLE BODY ASSY(1AZ±FE)
10±29
AVENSIS REPAIR MANUAL (RM1018E)
11.INSTALL THROTTLE POSITION SENSOR
(a)Make sure that throttle valve is fully closed.
(b)With the throttle position sensor rotated 45
counter-
clockwise about the fully closed position of the throttle
valve, install the throttle position sensor to the throttle
body.
(c)Rotate the throttle position sensor clockwise and secure
it with the 2 screws.
12.INSTALL ISC VALVE
(a)Install a new gasket to the throttle body.
(b)Install the ISC valve with the 3 screws.
13.INSTALL FUEL VAPOR FEED HOSE NO.2
14.INSTALL THROTTLE BODY ASSY
(a)Install a new gasket to the intake manifold.
(b)Install the throttle body and the fuel pipe support with the 3 bolts.
Torque: 30 N
m (306 kgf
cm, 22 ft
lbf)
(c)Install the fuel tube to the fuel pipe support.
(d)Connect the water by±pass hose.
(e)Connect the water by±pass hose No. 2.
(f)Connect the ISC valve connector.
(g)Connect the throttle position sensor connector.
15.INSTALL ACCELERATOR CONTROL CABLE ASSY
(a)Instal the accelerator control cable as shown in the il- lustration.
Torque: 13 N
m (129 kgf
cm, 9 ft
lbf)
16.INSTALL AIR CLEANER CAP SUB±ASSY
17.INSTALL ENGINE COVER SUB±ASSY NO.1 Torque: 7.0 N
m (71 kgf
cm, 62 in.
lbf)
18.ADD ENGINE COOLANT (See page 16±19)
19.CHECK FOR ENGINE COOLANT LEAKS (See page 16±13)
20. INSTALL ENGINE ROOM COVER SIDE
21. INSTALL RADIATOR SUPPORT OPENING COVER

100FG±01
A77870
Mass Air Flow
Meter Connector
N´m (kgf´cm, ft´lbf) : Specified torqueEngine Cover Sub±assy
No. 1
7.0 (71, 62 in.
lbf)
Fuel Vapor Feed Hose
No. 2
Air Cleaner Cap
Sub±assyVSV
Connector Fuel Vapor Feed Hose
Clip
Engine Room Cover Side
Radiator Support Opening Cover
Clip
Retainer
x2
x4 10±24
± ENGINE CONTROL SYSTEMTHROTTLE BODY ASSY (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
THROTTLE BODY ASSY (1AZ±FE)
COMPONENTS

100FD±01
A78454
N´m (kgf´cm, ft´lbf) : Specified torqueClip
Cylinder Head Cover No.2
Fuel
Vapor Feed Hose No.1
VSV
Connector
Mass Air Flow
Meter Connector Accelerator Control
Cable Assy
Fuel Vapor Feed Hose
No.3 Engine Room Cover Side
Radiator Support Opening Cover
Clip
Retainer
7.0 (71, 62 in.´lbf)
Clip
1.5 (15, 13 in.´lbf)
13 (129, 9)
Air Cleaner Cap
Sub±assy
x2
x4
± ENGINE CONTROL SYSTEMTHROTTLE BODY ASSY (3ZZ±FE)
10±13
AVENSIS REPAIR MANUAL (RM1018E)
THROTTLE BODY ASSY (3ZZ±FE)
COMPONENTS

A78460
(a)
(b)(c)
(c)
(d)
(e)
(f)
(g)
(h)
Air Cleaner clamp
A78461
A78462
(a)
(b)
(c)
A78463
(d)
(e)
(M/T) 10±10
± ENGINE CONTROL SYSTEMTHROTTLE BODY ASSY (1ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
5. REMOVE AIR CLEANER CAP SUB±ASSY
(a) Disconnect the mass air flow meter connector.
(b) Disconnect the VSV connector.
(c) Remove the 2 wire harness clamps.
(d) Disconnect the fuel vapor feed hose No. 1.
(e) Disconnect the fuel vapor feed hose No. 3.
(f) Remove the accelerator control cable from the accelera-
tor control cable support No. 2.
(g) Loosen the hose clamp.
(h) Raise the air cleaner clamp up, slide it to the air cleaner
cap.
(i) Remove the air cleaner cap together with the air cleaner
hose No. 1.
6. SEPARATE ACCELERATOR CONTROL CABLE ASSY
(a) Loosen the nut and separate the accelerator control
cable.
7. REMOVE THROTTLE BODY ASSY
(a) Disconnect the water by±pass hose.
(b) Disconnect the water by±pass hose No. 2.
(c) Disconnect the ventilation hose.
(d) Disconnect the throttle position sensor connector.
(e) Disconnect the ISC valve connector.
(f) Remove the 3 bolts and 2 nuts, and then remove the
throttle body bracket and the throttle body. (A/T)
(g) Remove the 5 bolts and 2 nuts, and then remove the
throttle body bracket and the throttle body. (M/T)
(h) Remove the gasket from the intake manifold.