gas type TOYOTA AVENSIS 2005 Service Repair Manual

± PREPARATIONAUTOMATIC TRANSMISSION / TRANS
02±39
AVENSIS REPAIR MANUAL (RM1018E)
09090±04020Engine Sling DeviceAUTOMATIC TRANSAXLE
ASSY(U241E)
AUTOMATIC TRANSAXLE
ASSY(U341E)
95416±00140Gas Leak Detector
(Halogen Leak Detector)
(DENSO Part No.)TRANSMISSION CONTROL CABLE
ASSY
09216±00021Belt Tension GaugeAUTOMATIC TRANSAXLE
ASSY(U151E/U151F)
SSM
08833±00080Adhesive 1344
THREE BOND 1344
LOCTITE 242 or equivalentTRANSMISSION WIRE(U241E)
TRANSMISSION VALVE BODY
ASSY(U241E)
Equipment
Straight edgeAutomatic transaxle assy
Torque wrench
Vernier calipersAutomatic transaxle assy
Dial indicator with magnetic baseTorque converter and drive plate
Slide calipersAutomatic transaxle assy
Chain blockAutomatic transaxle assy
Lubricant
U341E
Automatic transaxle fluid
Dry fill
Drain and refill
6.9 liter (7.7 USqts, 6.4 lmp.qts)
3.0 liter (3.2 USqts, 2.6 lmp.qts)ATF type T±IV
U241F
Automatic transaxle fluid
Dry fill
Drain and refill
8.6 liter (9.0 USqts, 7.6 lmp.qts)
3.5 liter (3.7 USqts, 3.1 lmp.qts)ATF type T±IV

0505J±04
05±16
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to \
the type of instrument
or other factors.
If a malfunction code is displayed during the DTC check in the check mode, check the circuit f\
or the codes
listed in the table below. For details of each code, refer to the ''See page '' under the respective ''DTC No.''
in the DTC chart.
DTC No.
(See page)Detection ItemTrouble Area*1
CHK ENGMemory
P0100
(05±24)Mass Air Flow Circuit Malfunc-
tion
Open or short in mass air flow meter circuit

Mass air flow meter

ECM

P0110
(05±30)Intake Air Temperature Circuit
Malfunction
Open or short in intake air temp. sensor circuit

Intake air temp. sensor (built into mass air flow meter)

ECM

P0115
(05±34)Engine Coolant Temperature Cir-
cuit Malfunction
Open or short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM

P0116
(05±38)Engine Coolant Temperature Cir-
cuit Range/Performance Prob-
lem
Engine coolant temperature sensor

Thermostat
P0120
(05±39)Throttle Pedal Position Sensor/
Switch ºAº Circuit Malfunction
Open or short in throttle position sensor circuit

Throttle position sensor

ECM

P0121
(05±44)Throttle Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance Problem

Throttle position sensor
P0125
(05±45)Insufficient Coolant Temp. for
Closed Loop Fuel Control

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

Gas leakage on exhaust system

ECM

P0130*3
(05±54)
Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

P0133*3
(05±60)
Oxygen Sensor Circuit Slow Re-
sponse (Bank 1 Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

ECM

P0135
(05±65)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 1)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM

P0136
(05±54)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
Open or short in heated oxygen sensor circuit

Heated oxygen sensor
P0141
(05±65)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 2)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM


A66651A±A SectionAir Solid Electrolyte
(Zirconia Element)
Platinum ElectrodeHeater
Exhaust Gas
CoverIdeal Air±Fuel Mixture
Output Voltage
Richer ± Air Fuel Ratio ± Leaner Element
AA
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±45
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0125 INSUFFICIENT COOLANT TEMP. FOR
CLOSED LOOP FUEL CONTROL
CIRCUIT DESCRIPTION
The heated oxygen sensor is the planar type. Compared to the conventional type, the sensor element and
the heater portions have a narrower overall. The heater can directly conduct its heat to the zirconia element
via the alumina, it helps to accerate the sensor activation.
To obtain a high purification rate for the CO, HC and NOx components of the exhaust gas, a three ± way
catalytic 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
provide the ECM with feedback 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 0.45V). The ECM judges by the voltage output from the heated oxygen sensor whether the
air±fuel ratio is RICH or LEAN and controls the injection time accordingly. If the malfunction of the heated
oxygen sensor causes an output of abnomal voltage, the ECM becomes unable to perform 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), current flows to the
heater in order to heat the sensor for the accurate oxygen concentration detection.
DTC NoDTC Detecting ConditionTrouble Area
P0125
After engine is warmed up, heated oxygen sensor output* does
not change when conditions (a), (b), (c) and (d) continue for at
least 1.5 min:
*: Output value changes at inside of the ECM only
(a) Engine speed: 1,400 rpm or more
(b) Vehicle speed: 40 to 100 km/h (25 to 62 mph)
(c) Throttle valve is not fully closed
(d) 180 sec. or more after starting engine
Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

Gas leakage in exhaust system

ECM
05C69±01

A66651A±A SectionAir Solid Electrolyte
(Zirconia Element)
Platinum ElectrodeHeater
Exhaust Gas
CoverIdeal Air±Fuel Mixture
Output Voltage
Richer ± Air Fuel Ratio ± Leaner Element
AA
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±211
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0136/27 OXYGEN SENSOR CIRCUIT MALFUNCTION
(BANK 1 SENSOR 2)
DTC P0156/29 OXYGEN SENSOR CIRCUIT MALFUNCTION
(BANK 2 SENSOR 2)
CIRCUIT DESCRIPTION
The heated oxygen sensor is 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 for the CO, HC and NOx components of the exhaust gas, a three±way cata-
lytic converter is used. But 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
provide the ECM with feedback 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 by the voltage output from the heated oxygen sensor whether the
air±fuel ratio is RICH or LEAN and controls the injection time accordingly. However, if the malfunction of the
heated oxygen sensor causes an output of abnormal voltage, the ECM becomes unable to perform 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), current flows to the
heater in order to heat the sensor for the accurate oxygen concentration detection.
DTC NoDTC Detection ConditionTrouble Area
The following condition continues for 480 sec. or more:
Open or short in heated oxygen sensor (bank 1, 2 sensor 2)
circuitP0136/27
P0156/29
g

During driving with the engine warmed up, voltage output of
the heated oxygen sensor remains at 0.45 V or more, or 0.60circuit

Heated oxygen sensor (bank 1, 2 sensor 2)
Heated o gen sensor heater (bank 1 2 sensor 2)P0156/29the heated oxygen sensor remains at 0.45 V or more, or 0.60
V or less.
Heated oxygen sensor heater (bank 1, 2 sensor 2)

EFI relay
05C6X±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.

05C7W±01
05±1166
± DIAGNOSTICSCOMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below and proceed to the appropriate page.
DTC No.Description of faultComment / Remedy
000No malfunction±
010
011Overvoltage shutoff
Undervoltage shutoffVoltage between 1 and 5 at connector A > 16 V
Voltage between 1 and 5 at connector A < 10.2 V
(Voltage values must be present > 20 seconds)
Check battery, regulator and electrical leads.
012Overheating
Check temperature at temperature or overheating sensor >
125
C
Check water circuit.
014Possible overheating detected
(Hardware threshold value)
Difference of measured values at temperature sensor > 15
C
(min. 70
C water temperature and metering pump in opera-
tion);
Check temperature sensor and overheating sensor, replace if
necessary.
017Overheating detected
(Hardware threshold value)
Temperature at temperature or overheating sensor > 130
C,
emergency OFF if DTC No. 012 or 014 not is applicable;
Check water circuit, temperature sensor and overheating sen-
sor, replace if necessary.
020Glow plug breakCheck glow plug, replace if necessary.
021Glow plug output overloadCheck glow plug, replace if necessary.
030Combustion air blower motor
EMF outside perm. range.Blower impeller or burner motor fammed (frozen solid, dirty,
etc.)
Remedy jam, replace burner motor if necessary.
031Combustion air blower motor breakCheck the lead to combustion air motor (burner motor) for
continuity, replace if necessary.
032Combustion air blower motor short±circuit
Check combustion air blower motor (burner motor), replace if
necessary.
Check supply lead (chafed, etc.).
047Metering pump short±circuitCheck the supply lead to metering pump for short±circuit,
check metering pump, replace if necessary.
048Metering pump breakCheck the supply lead to metering pump for continuity, remedy
break, replace metering pump if necessary.
051Cold blow time exceeded
At start, if flame sensor above 70
C, > 240 sec.;
Check exhaust gas combustion air supply, check flame sen-
sor, replace if necessary.
052Safety time exceeded
When all perm. start attempts used up;
Check the fuel delivery and fuel supply.
Check exhaust gas and combustion air ducts.
054Flame cutout, High settingCheck the fuel delivery and fuel supply.
Check exhaust gas combustion air ducts.
056Flame cutout, LOW setting
Check exhaust gas combustion air ducts.
If combustion OK
Check the flame sensor, replace if neces-
sary.
060Temperature conrol sensor break
Check connecting leads.
Resistance value between 2 and 10 connector B > 2 M
(if
break)
061Temperature control sensor short±circuit
Check connecting leads.
Resistance value between 2 and 10 at connector B < 2 M
(If
short± circuit)
064Flame sensor break
Check connecting leads.
Resistance value between 7 and 14 at connector B > 3,040

(If break)
065Flame sensor short±circuit
Check connecting leads.
Resistance value between 7 and 14 at connector B > 780
(If
short±circuit)

05±1196
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)Terminal No.Destination (Wire Harness Side) Terminal Symbol
A28±1 (*4)RSP+Seat Position Airbag Sensor
A28±2 (*4)RSP±Seat Position Airbag Sensor
A28±3 (*4)RBE±Front Seat Inner Belt Assy RH (Buckle Switch RH)
A28±5SFR+Separate Type Front Seat Back Assy (Side Squib RH)
A28±6SFR±Separate Type Front Seat Back Assy (Side Squib RH)
A28±7 (*3)ICR±Curtain Shield Airbag Assy RH (Curtain Shield Squib RH)
A28±8 (*3)ICR+Curtain Shield Airbag Assy RH(Curtain Shield Squib RH)
A28±9PR+Front Seat Outer Belt Assy RH (P/T Squib RH)
A28±10PR±Front Seat Outer Belt Assy RH (P/T Squib RH)
A28±11DK±Instrument Panel Airbag Assy (Knee Squib)
A28±12DK+Instrument Panel Airbag Assy (Knee Squib)
A28±14 (*4)RBE+Front Seat Inner Belt Assy RH (Buckle Switch RH)
A28±15BBR±Side Airbag Sensor Assy RH
A28±17BBR+Side Airbag Sensor Assy RH
*1: Gasoline Engine
*2: LHD
*3: w/ Curtain Shield Airbag
*4: RHD

I35762
Combination Meter Assy
Fuse Block
Driver Side J/B
Center J/B
Ignition Switch
Engine Room J/B No.1 and R/B No.1
Engine Room J/B No.3FL MAIN
ALTAM2 DCC
J15
J/C AM1 IG1
AM2 IG2J/CJ/C
DOME
IGN
GAUGE1 IG1 Relay
AM1B±WC1120
22
21
5
W±B A
IL IP IJ IK B±RIE4 IP111 B±R6 1
4 3
G±RG±YW±BW±BR±W J11
J26 J10 6 2 1
IE4 IP154
B±W
2
18
7
5
9
1 DA
DB DH
DN1C11
C11
C11 W±R(*2) W±R
(*1) H
F F F
W±R
J26 6
B±W
(*2) (*1)
DH DH
DA 21 53J26 J26J8
J8CA
CA (*1) (*2)
(*1) (*2)(*1) (*2)
W±B 7
6
6 6
CA
CACD
CK
(*2)
(*1)
(*2) W±B
(*1) 1
11
2
1
2
1
1A
B±G
B±G4A1
4B 1
2B±RR±W Gasoline Engine Type:
4D11B±G
Battery B±W
*1: LHD Models
*2: RHD Models 05±1520
± DIAGNOSTICSCOMBINATION METER
AVENSIS REPAIR MANUAL (RM1018E)

B66771
KSW
W±B8 U1
Unlock Warning Switch Assy
W±B
IP5
+B GROUND 1
W±R W±B
2
1Instrument Panel J/B Assy
PRG
RDA 16
2PRG
RDA D6
Door Control Receiver
7Integration
Relay
IC2 I14 3 G±Y
L±W 16
7
To
Battery
DA Y
IO*
1
6 8
Center
J/BIC2 G±Y
L±W
CA CD
AJ16
J/C LHD Models
19 I14
A W±B
IL*
2*1: Gasoline Engine
*2: 1CD±FTV
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
05±1575
AVENSIS REPAIR MANUAL (RM1018E)
ONLY WIRELESS CONTROL FUNCTION DOES NOT OPERATE
(PREPARE NEW OR NORMAL TRANSMITTER OF THE SAME
TYPE VEHICLE)
CIRCUIT DESCRIPTION
The door control receiver receives a signal from the transmitter and sends this signal to the integration relay.
Then, the integration relay controls door operation by sending a door LOCK/UNLOCK signal and a luggage
door (back door) unlock signal to each door lock motor.
WIRING DIAGRAM
05BNB±01

100FL±01
A77917
A77918
(a)
(b)
A77919
10±34
±
ENGINE CONTROL SYSTEM KNOCK SENSOR(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
REPLACEMENT
1.DISCHARGE FUEL SYSTEM PRESSURE (See page 11±15)
2.REMOVE ENGINE ROOM COVER SIDE (See page 10±26)
3.REMOVE RADIATOR SUPPORT OPENING COVER (See page 10±26)
4.ENGINE COOLANT (See page 16±19)
5.REMOVE ENGINE COVER SUB±ASSY NO.1 (See page 10±26)
6.REMOVE AIR CLEANER CAP SUB±ASSY (See page 10±26)
7.SEPARATE ACCELERATOR CONTROL CABLE ASSY (See page 10±26)
8.REMOVE THROTTLE BODY ASSY (See page 10±26)
9.DISCONNECT FUEL TUBE SUB±ASSY (See page 11±26) SST 09268±21010
10.REMOVE FUEL DELIVERY PIPE SUB±ASSY (See page 11±26)
11. REMOVE VARIABLE RESISTOR (LHD STEERINGPOSITION TYPE, LEADED GASOLINE)
(a) Disconnect the variable resistor connector.
(b) Remove the bolt, and then remove the variable resistor.
12. REMOVE CHARCOAL CANISTER ASSY
(a) Disconnect the charcoal canister outlet hose No. 1.
(b) Disconnect the fuel hose.
(c) Pull up and remove the charcoal canister.
13. DISCONNECT HEATER INLET WATER HOSE