2005 TOYOTA AVENSIS sensor

03−1 6
−
SERVICE SPECIFICATIONS ENGINE MECHANICAL
AVENSIS Supplement (RM1045E) Part Tightened
ft
lbf
kgf
cm
N
m
Intake manifold x Cylinder head2120915
Power steering idle pulley bracket x Cylinder head
(See page 14 −108) Bolt A
Bolt B
72
39734
39853
29
Intake manifold insulator No. 1 x Intake manifold5.05144 in.
lbf
Injection pipe x Common rail
With SST
Without SST
31
34316
34723
25
Injection pipe x Injector
For used pipe With SST Without SST
For new pipe With SST
Without SST
36
40
31
34372
408
316
34727
30
23
25
Injection pipe clamp x Intake manifold5.05144 in.
lbf
Fuel inlet pipe x Common rail
With SST
Without SST
31
34316
34723
25
Fuel inlet pipe x injection pump With SST
Without SST
31
34316
34723
25
Nozzle leakage pipe No.2 x Cylinder head cover sub −assy8.89078 in.
lbf
Nozzle leakage pipe No.2 x Cylinder head8.89078 in.
lbf
Vacuum pump x Cylinder head2121415
EGR valve assy x Cylinder head1818413
Intake air connector with diesel throttle body x Intake manifold2120915
Water inlet x Cylinder block8.89078 in.
lbf
Water outlet sub −assy x Cylinder head2120915
Exhaust manifold x Cylinder head4747434
EGR pipe sub −assy x Cylinder head Bolt
Nut37
25375
25027
18
Vacuum pump oil pipe x Cylinder block Bolt Nut21
8.8214 9015
78 in.
lbf
Vacuum transmitting pipe No. 2 x Manifold converter
For nut With SST
Without SST
For bolt
27
30
25275
306
25520
22
18
Vacuum transmitting pipe No. 1 x Manifold converter
For nut With SST Without SST
For bolt
27
30
25275
306
25520
22
18
Exhaust gas temperature sensor x Manifold converter With SST
Without SST27
30275
30620
22
Exhaust gas temperature sensor x Vacuum transmitting pipe No. 26.46557 in.
lbf
Oil filter bracket x Oil pan sub −assy3434725
V −ribbed belt tensioner bracket x Cylinder block2020415
V −ribbed belt tensioner assy x Oil pump3131623
Generator bracket No.1 x Cylinder block3737727
Idler pulley Sub −assy x V −ribbed belt tensioner assy4040830
Engine mounting bracket RR x Engine mounting insulator RR6465347
Engine mounting bracket FR x Engine mounting insulator FR6465347
Drive shaft bearing bracket x Cylinder block6465347
Rear end plate x Cylinder block8.48674 in.
lbf
Flywheel x Crankshaft7172052
Engine mounting member sub −assy center x Body4545933

−
SERVICE SPECIFICATIONS ENGINE MECHANICAL
03−1 7
AVENSIS Supplement (RM1045E) Part Tightened
ft
lbf
kgf
cm
N
m
Front suspension crossmember sub −assy x Rear engine mounting bracket8788764
Front suspension crossmember sub −assy x Front engine mounting bracket5253038
Front suspension crossmember sub −assy x Body1331,35698
Front suspension member brace x Front suspension crossmember sub −assy1331,35698
Front suspension member brace x Body8081659
Return tube sub −assy x Body8.08271 in.
lbf
Engine mounting insulator RH x Body5253038
Engine mounting insulator RH x Transverse engine engine mounting blacket5253038
Engine mounting bracket LH x Engine mounting insulator LH8081659
Air tube No. 2 hose clamp bolt Intake shutter side
Air hose No. 3 side6.0
5.361
5453 in.
lbf
47 in.
lbf
Injector driver x Engine mounting insulator RH5.55649 in.
lbf
Engine wire x Body8.48574 in.
lbf
Air tube No.2 x Manual transaxle2525518
Relay block x Radiator assy5.35447 in.
lbf
Differential pressure sensor x Body5.55649 in.
lbf
Air cleaner assy x Body x Engine mounting bracket LH7.07162 in.
lbf
Battery clamp x Body Body
Nut5.0
3.0 to 4.051
31 to 4144 in.
lbf
27 to 35 in.
lbf
Battery terminal5.45548 in.
lbf
Timing belt tensioner x Cylinder block2121415
Timing chain cover plate x Camshaft oil seal retainer9.09280 in.
lbf
Transverse engine engine mounting bracket x
Cylinder block (See page 14 −138) Bolt A
Bolt B
37
64375
65027
47
Timing belt No. 1 cover x Transverse engine engine mounting bracket7.47565 in.
lbf
Timing belt No. 1 cover x Oil pump assy7.47565 in.
lbf
Timing belt No. 2 cover x Transverse engine engine mounting bracket7.47565 in.
lbf
Timing belt No. 2 cover x Cylinder head cover sub −assy7.47565 in.
lbf
Timing belt No. 2 cover x Camshaft oil seal retainer7.47565 in.
lbf
Timing belt No. 2 cover x Timing belt cover No. 37.47565 in.
lbf
Crankshaft pulley x Crankshaft1801,835133
Camshaft bearing cap x Cylinder head2020415
Camshaft oil seal retainer x Cylinder head9.81007.2
Camshaft timing pulley x Camshaft8889965
Nozzle leakage pipe x Injector1616312
Nozzle leakage pipe x Camshaft bearing cap No. 42020415
Cylinder head cover x Cylinder head131359.7
Vacuum reservoir sub −assy x Cowl top panel outer8.38573 in.
lbf
Cylinder head x Cylinder block 1st
2nd3rd4th45
Turn 90 _
Turn 90 _
Turn 90 _459
Turn 90 _
Turn 90 _
Turn 90 _33
Turn 90 _
Turn 90 _
Turn 90 _
Exhaust fuel addition injector x Cylinder head1211 78.5
Drain plug (oil pan)3435025

05−82
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
DTC P0130 OXYGEN SENSOR CIRCUIT (BANK1
SENSOR1)
DTC P0150 OXYGEN SENSOR CIRCUIT MALFUNCTION
(BANK 2 SENSOR1)
DTC P2195 OXYGEN SENSOR SIGNAL STUCK LEAN
(BANK1SENSOR1)
DTC P2196 OXYGEN SENSOR SIGNAL STUCK RICH
(BANK1SENSOR1)
DTC P2197 OXYGEN SENSOR SIGNAL STUCK LEAN
(BANK 2 SENSOR1)
DTC P2198 OXYGEN SENSOR SIGNAL STUCK RICH
(BANK 2 SENSOR1)
05CK9−02

A00798
Atmosphere
Housing
Platinum Electrode
Solid Electrolyte
(Zirconia Element)
Platinum Electrode
Heater
Coating (Ceramic)
Exhaust Gas CoverIdeal Air−Fuel Mixture
Output Voltage
Richer−Air Fuel Ratio−Leaner
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−83
AVENSIS Supplement (RM1045E)
CIRCUIT DESCRIPTION
To obtain a high purification rate for 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 heated oxygen sensor has the characteristic whereby its output voltage changes suddenly in the vicinity
of the stoichiometric air−fuel ratio. This is used to detect the oxygen concentration in the exhaust gas and
to provide the ECM with feedback to control the air−fuel ratio.
When the air−fuel ratio becomes LEAN, the oxygen concentration in the exhaust gas increases. And the
heated oxygen sensor informs the ECM of the LEAN condition (low voltage, i. e. less than 0.45 V).
When the air−fuel ratio is RICHER than the stoichiometric air−fuel ratio, the oxygen concentration in the ex-
haust gas is reduced. And the heated oxygen sensor informs the ECM of the RICH condition (high voltage,
i. e. more than 0.45 V). The ECM judges whether the air−fuel ratio is RICH or LEAN by voltage from the
heated oxygen sensor, and controls the injection timing accordingly. However, if the malfunction of the
heated oxygen sensor causes abnormal voltage output, the ECM becomes unable to perform the accurate
air−fuel ratio control.
The heated oxygen sensors include 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 in order to heat the sensor for the accurate oxygen concentration detection.

05−84
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E) DTC No.
DTC Detection ConditionTrouble Area
P0130
P0150After engine is warmed up, output voltage of heated oxygen
sensor remains at 0.4 V or more, or 0.55 V or less, during id-
ling (2 trip detection logic)
SOpen or short in heated oxygen sensor circuit
SHeated oxygen sensor (Bank1, 2 Sensor1)
SHeated oxygen sensor heater (Bank1, 2 Sensor1)
SEFI relay
SAir induction system
SFuel pressure
SInjector
SECM
P2195
P2197After engine is warmed up, output voltage of heated oxygen
sensor remains at 0.55 V or less, during idling (2 trip detection
logic)
SOpen or short in heated oxygen sensor circuit
SHeated oxygen sensor (Bank1, 2 Sensor1)
SHeated oxygen sensor heater (Bank1, 2 Sensor1)
SEFI relay
SAir induction system
SFuel pressure
SInjector
SECM
P2196
P2198After engine is warmed up, output voltage of heated oxygen
sensor remains at 0.4 V or more, during idling (2 trip detection
logic)
SOpen or short in heated oxygen sensor circuit
SHeated oxygen sensor (Bank1, 2 Sensor1)
SHeated oxygen sensor heater (Bank1, 2 Sensor1)
SEFI relay
SAir induction system
SFuel pressure
SInjector
SECM
HINT:
SBank1refers to the No.1and No. 4 cylinders.
SBank 2 refers to the No. 2 and No. 3 cylinders.
SSensor1refers to the sensor closest to the engine assembly.
SThe output voltage of the heated oxygen sensor and the short−term fuel trim value can be read using
the hand−held tester.

A76864
ECM
MREL
HT1B 8
E9
E12 25 H8
Heated Oxygen Sensor (Bank1Sensor 2)
4 21
3P
B
W−B 4
2
1
D 2
12
4A
W−B
Battery
EC 1 3
5
J/C
FL MAIN
E B−W
EEBR(*1)
*1: Shielded 4EFI
No. 2Engine
Room
R/B No. 4
B−WB−W
13
EA1
Engine Room
R/B No. 4EFI
Relay
B−Y 44
44
1
4B 1Engine Room
J/B No. 4 B−G
B−G EFI 1
1A 1Engine
Room
R/B No.1
J13
J12BR EDJ12
J13DJ12
J/C BR
BR GRGR
OX1B E12 21
W B−WB−W
B−W2
IE1
O1B− E11 26 GR
(*1)
(*1)HT2B
E12 33 H10
Heated Oxygen Sensor
(Bank 2 Sensor 2)
4 2
1
3L−B
R (*1)
OX2B E12 29
G B−W
B−WO2B− E11 31
HT1A E12 5 H7
Heated Oxygen Sensor
(Bank1Sensor1)
4 2
1
3Y
B
(*1)OX1A E12 22
BR B−W
B−W
E2 E13 28 BR
BR(*1)
HT2A E12 4
H9
Heated Oxygen Sensor
(Bank 2 Sensor1) 4
2
1 3
LR
OX2A E12 23
B−W Engine
Room
J/B No.1
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−85
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM

+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Case1
Case 2
Case 3
Case 4
Output voltage of heated oxygen
sensor (sensor1: front sensor)
Injection volume
Output voltage
Output voltage of heated oxygen
sensor (sensor 2: rear sensor)Main suspect
trouble area
OK
+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
Sensor1: front sensor
(sensor1, heater, sensor1
circuit)+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
−12.5 %
Injection volume
Output voltage
NG
+25 %
−12.5 %
Injection volume
Output voltage
NG
+25 %
−12.5 %
Injection volume
Output voltage
NG
+25 %
−12.5 %
Injection volume
Output voltage
NGExtremely rich or lean actual
air−fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
Almost no reaction


Sensor 2: rear sensor
(sensor 2, heater, sensor 2
circuit)
Almost no reaction Almost no reactionAlmost no reaction
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−87
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
Hand−held tester only:
It is possible the malfunctioning area can be found using the ACTIVE TEST A/F CONTROL operation. The
A/F CONTROL operation can determine if the A/F sensor, heated oxygen sensor or other potential trouble
areas are malfunctioning or not.
(a) Perform the ACTIVE TEST A/F CONTROL operation.
HINT:
The A/F CONTROL operation lowers the injection volume12.5% or increases the injection volume 25%.
(1) Connect the hand−held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch to ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 3 minutes.
(4) Select the item: DIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROL.
(5) Perform the A/F CONTROL operation with the engine in an idle condition (press the right or left
button).
Result:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume:
+25 %
rich output: More than 0.5 V
−12.5 %
lean output: Less than 0.4 V
NOTICE:
There is a delay of few seconds in the sensor1(front sensor) output, and there is about 20 seconds
delay at maximum in the sensor 2 (rear sensor).

05−88
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
The following A/F CONTROL procedure enables the technician to check and graph the voltage outputs of
both the heated oxygen sensor.
To display the graph, enter ACTIVE TEST/ A/F CONTROL/USER DATA, then select ”O2S B 1S 1 and O2S
B 1S2” or ”O2S B2S 1 and O2S B2S2” by pressing the ”YES” button followed by the ”ENTER” button and then
the ”F4” button.
NOTICE:
If the vehicle is short of fuel, the air −fuel ratio becomes LEAN and heated oxygen sensor DTCs will
be recorded, and the CHK ENG then illuminates.
HINT:
S If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
S Read freeze frame data using the hand−held tester . Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or
rich, and other data from the time the malfunction occurred.
S A high heated oxygen sensor (sensor 1) voltage (0.5 V or more) could be caused by a rich air −fuel
mixture. Check for conditions that would cause the engine to run rich.
S A low heated oxygen sensor (sensor 1) voltage (0.4 V or less) could be caused by a lean air −fuel mix-
ture. Check for conditions that would cause the engine to run lean.
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO HEATED OXYGEN SENSOR
DTCS)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON.
(c) Select the item: DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES.
(d) Read the DTCs using the hand −held tester.
Result:
Display (DTC output)Proceed to
P0 130, P0 150, P2 195, P2 196, P2 197 and/or P2 198A
P0 130, P0 150, P2 195, P2 196, P2 197 or P2 198 and other DTCsB
HINT:
If any other codes besides P0 130, P0 150, P2 195, P2 196, P2 197 and/or P2 198 are output, perform trouble-
shooting for those DTCs first.
B GO TO RELEVANT DTC CHART(See page 05 −31)
A