2005 TOYOTA AVENSIS heater

D26384
D26450
Differential Assy
D25215
90−100_C(194−230_F)
D26445
Mark
− AUTOMATIC TRANSMISSION / TRANSFRONT DIFFERENTIAL ASSY (U151E)
40−113
U151E, U151F A/T REPAIR MANUAL (RM1021U)Mark ThicknessMark Thickness
72.35 (0.0925)G2.80 (0.1102)
82.40 (0.0945)H2.85 (0.1122)
(f) Remove the16 bolts and the transaxle housing.
(g) Remove the differential assy.
16. INSTALL FRONT DIFFERENTIAL RING GEAR
(a) Using ATF and heater, heat the front differential ring gear
to 90−110_C(194.0−230.0_F).
NOTICE:
Do not overheat the ring gear to110_C (230.0_F) or more.
(b) Clean the contact surface of the front differential case.
(c) Align the match−marks, install the front differential ring
gear case quickly.
NOTICE:
Do not install the bolts while the ring gear is hot.

05JOB–03
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–21
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
FAIL–SAFE CHART
If any of the following DTCs are recorded, the ECM enters fail–safe mode.
DTC No.Fail–Safe OperationFail–Safe Deactivation Condition
P0031
P0032Heated oxygen sensor (Sensor 1) heater is turned offIgnition switch turned to OFF
P0037
P0038Heated oxygen sensor (Sensor 2) heater is turned offIgnition switch turned to OFF
P0100
P0102
P0103Ignition timing is calculated from engine RPM and Throttle
Position (TP)”Pass” condition detected
P0110
P0112
P0113
Intake Air Temperature (IAT) is fixed at 20
C (68
F)”Pass” condition detected
P0115
P0117
P0118
Engine Coolant Temperature (ECT) is fixed at 80
 
”Pass” condition detected
P0120
P0122
P0123
P0220
P0222
P0223
P2102
P2103
P2111
P2112
P2118
P2119
P2135
When Electronic Throttle Control System (ETCS) is mal-
functioning, electric current to throttle actuator is cut off and
throttle valve returns to throttle position (TP) 16 by its
spring.
Then, required engine power is calculated using ignition
timing and Accelerator Pedal Position (APP). Engine is
controlled by intermittent fuel–cut.
As a result, fully slowly depressing accelerator pedal en-
ables driving at minimum speed. However, quickly depress-
ing pedal would vary vehicle speed remarkably.
”Pass” condition detected followed by the ignition switch
turned to OFF
P0121Fuel is cut intermittently”Pass” condition detected followed by the ignition switch
turned to OFF
P0325
P0327
P0328
Maximum ignition timing retardationIgnition switch turned to OFF
P0351
P0352
P0353
P0354
Fuel is cut”Pass” condition detected
P2120
P2121
P2122
P2123
P2125
P2127
P2128
P2138
Accelerator Pedal Position (APP) sensor has main circuit
and associate circuit. When one of circuits is malfunction-
ing, APP is calculated by output of other circuit. When both
of circuits are malfunctioning, it is interpreted that accelera-
tor pedal is releasing. As a result, throttle valve is closed
and engine idles.
”Pass” condition detected followed by the ignition switch
turned to OFF

05–14
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E) Symbols (Terminals No.)
STD Voltage
Condition
Terminal Description
Wiring Color
VCPA (E9–26) – EPA (E9–28)B – Y
Power source of acceler-
ator pedal position sensor
(for VPA)
Ignition switch ON4.5 to 5.0 V
VCP2 (E9–27) – EPA2 (E9–29)B – Y
Power source of acceler-
ator pedal position sensor
(for VPA2)
Ignition switch ON4.5 to 5.0 V
VG (E13–30) – EVG (E13–29)G – L–YMass air flow meterIdling, Shift position P or N, A/C
switch OFF0.5 to 3.0 V
THA (E13–20) – E2 (E13–28)G–R – BRIntake air temperature
sensorIdling, Intake air temperature 20
C
(68
F)0.5 to 3.4 V
THW (E13–19) – E2 (E13–28)B–W – BREngine coolant tempera-
ture sensorIdling, Engine coolant temperature
80
 
\b0.2 to 1.0 V
#10 (E13–1) – E01 (E13–7)
#20 (E13–2) – E01 (E13–7)
#30 (E13–3) – E01 (E13–7)
#40 (E13–4) – E01 (E13–7)B–R – W–B
Y – W–B
W – W–B
B – W–B
InjectorIgnition switch ON9 to 14 V
#10 (E13–1) – E01 (E13–7)
#20 (E13–2) – E01 (E13–7)
#30 (E13–3) – E01 (E13–7)
#40 (E13–4) – E01 (E13–7)B–R – W–B Y – W–B
W – W–B
B – W–B
InjectorIdlingPulse generation
( See page 05– 118 )
IGT1 (E13–8) – E1 (E13–5)
IGT2 (E13–9) – E1 (E13–5)
IGT3 (E13–10) – E1 (E13–5)
IGT4 (E13–11) – E1 (E13–5)R–W – BR
P – BR
LG–B – BR
L–Y – BR
Ignition coil with igniter
(ignition signal)IdlingPulse generation
( See page 05–143 )
IGF (E13–24) – E1 (E13–5)W–R – BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
Ignition switch ON4.5 to 5.5 V
IGF (E13–24) – E1 (E13–5)W–R – BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
IdlingPulse generation
( See page 05–143 )
G2+ (E13–26) – NE– (E13–34)W – RCamshaft position sensorIdlingPulse generation
( See page 05–140 )
NE+ (E13–27) – NE– (E13–34)G – RCrankshaft position sen-
sorIdlingPulse generation
( See page 05–136 )
FC (E10–16) – E01 (E13–7)G–Y – W–BFuel pump controlIgnition switch ON9 to 14 V
M+ (E12–5) – E01 (E13–7)
M– (E12–4) – E01 (E13–7)B – W–B
W – W–BThrottle actuatorIdlingPulse generation
OX1A (E12–22) – E2 (E13–28)B – BRHeated oxygen sensor
Maintain engine speed at 2,500 rpm
for 2 minutes after warming up the
sensorPulse generation
( See page 05–74 )
OX1B (E10–23)
– E2– (E13–28)B – BRHeated oxygen sensor
Maintain engine speed at 2,500 rpm
for 2 minutes after warming up the
sensorPulse generation
( See page 05–100 )
HT1A (E12–6) – E03 (E12–7)
HT1B (E9–7) – E03 (E12–7)Y – W–B
P – W–BHeated oxygen sensor
heaterIdlingBelow 3.0 V
HT1A (E12–6) – E03 (E12–7)
HT1B (E9–7) – E03 (E12–7)Y – W–B
P – W–BHeated oxygen sensor
heaterIgnition switch ON9 to 14 V
KNK1 (E12–1) – EKNK (E12–2)B – WKnock sensorMaintain engine speed at 4,000 rpm
after warming up the enginePulse generation
( See page 05–132 )
OCV+ (E13–14)
– OCV– (E13–13)W–G – Y–BCamshaft timing oil con-
trol valve (OCV)Ignition switch ONPulse generation
( See page 05–34 )
EVP1 (E12–19) – E01 (E13–7)W–G – W–BEVAP VSVIgnition switch ON9 to 14 V
EVP1 (E12–19) – E01 (E13–7)W–G – W–BEVAP VSVIdlingPulse generation
STA (E13–12) – E1 (E13–5)B–Y – BRStarter signalShift position N, Ignition switch
START6.0 V or more

+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Case 1
Case 2
Case 3
Case 4
Output Voltage of Heated Oxygen
Sensor (sensor 1: 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
Sensor 1: front sensor
(Sensor 1, heater, sensor 1
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
05–108
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
The following A/F Control procedure enables the technician to check and graph the voltage output of both
the heated oxygen sensors.
To display the graph, select the following menu items on the tester: View / Line Graph.
NOTICE:
If the vehicle is short of fuel, the air–fuel ratio becomes lean and the heated oxygen sensor DTCs will
be recorded, and the MIL then illuminates.
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition
when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the
vehicle was moving or stationary, 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.
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.
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.

A97090
A93649
+B HT
E1 Component Side:
Front View Heated Oxygen Sensor Connector
Sensor 1
OX
05–112
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
9 READ VALUE OF INTELLIGENT TESTER II(OUTPUT VOLTAGE OF HEATED
OXYGEN SENSOR)
(a) Connect the intelligent tester II to the DLC3.
(b) Start the engine and turn the intelligent tester II ON.
(c) Select the following menu items: Powertrain / Engine and ECT / Data List / O2S B1 S1.
(d) Warm up the heated oxygen sensor at the engine speed of 2,500 rpm for approximately 90 seconds.
(e) Read the output voltage of the heated oxygen sensor during engine idling.
Standard:
Fluctuates between less than 0.4 V and more than 0.5 V (see the following figure).
OK Go to step 17
NG
10 INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a) Disconnect the H7 heated oxygen sensor connector.
(b) Measure the resistance between the terminals of the
heated oxygen sensor connector.
Standard:
Tester ConnectionSpecified Condition
1 (HT) – 2 (+B)5 to 10 Ω at 20C (68F)
1 (HT) – 4 (E1)10 kΩ or higher
(c) Reconnect the heated oxygen sensor connector.
NG REPLACE HEATED OXYGEN SENSOR
OK

A79114
Wire Harness Side:
Sensor 1H7
Heated Oxygen Sensor Connector
HT
OX
E1
Front View
A65746
HT1A
ECM Connector E12
OX1AE2 E13
A78602
Reference (Sensor 1 System Diagram):
Heated Oxygen Sensor
EFI Relay
Heater
Sensor
OX1A HT1AECM
From
Battery
EFI Fuse
E2
MREL OX HT
E1 +B
05–114
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
12 CHECK HARNESS AND CONNECTOR(HEATED OXYGEN SENSOR – ECM)
(a) Disconnect the H7 heated oxygen sensor connector.
(b) Disconnect the E12 and E13 ECM connectors.
(c) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
OX (H7–3) – OX1A (E12–22)Below 1 Ω
HT (H7–1) – HT1A (E12–6)Below 1 Ω
E1 (H7–4) – E2 (E13–28)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
OX (H7–3) or OX1A (E12–22) – Body ground10 kΩ or higher
HT (H7–1) or HT1A (E12–6) – Body ground10 kΩ or higher
(d) Reconnect the heated oxygen sensor connector.
(e) Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
13 REPLACE HEATED OXYGEN SENSOR
GO

A78602
Reference (Sensor 2 System Diagram):Heated Oxygen Sensor
EFI Relay
Heater
Sensor OX1B
HT1BECM
From
Battery EFI Fuse
E2MREL
OX
HT
E1
+B
05–46
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0037 OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)
DTC P0038 OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05–74.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current \
through the heater. The heated
oxygen sensor heater circuit uses a relay on the +B side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0037Heated current is 0.25 A or less when heater operates
(1 trip detection logic)
 Open in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
P0038Heater current exceeds 2 A when heater operates
(1 trip detection logic)
Short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
HINT:
Sensor 1 refers to the sensor mounted in front of the Three–Way Catalytic Converter (TWC) and lo-
cated near the engine assembly.
Sensor 2 refers to the sensor mounted behind the TWC and located far fro\
m the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05–74.
05KNW–02

A93651
+B HT
E1 OX Component Side:
Front View
Heated Oxygen Sensor Connector
+B HT
E1 OX
w/ HID w/o HID
Sensor 2
B16200
A18294
HT1B (+)
E03 (–)
E12
E9
ECM Connector
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–47
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, 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.
1 INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a) Disconnect the H17 heated oxygen sensor connector.
(b) Measure the resistance between the terminals of the
heated oxygen sensor connector.
Standard:
Tester ConnectionSpecified Condition
With HID: 1 (HT) – 2 (+B)11 to 16 Ω at 20C (68F)
With HID: 1 (HT) – 4 (E1)No Continuity
Without HID: 2 (HT) – 1 (+B)11 to 16 Ω at 20C (68F)
Without HID: 2 (HT) – 3 (E1)No Continuity
(c) Reconnect the heated oxygen sensor connector.
NG REPLACE HEATED OXYGEN SENSOR
OK
2 INSPECT EFI RELAY
(a) Remove the EFI relay from the engine room R/B No. 4.
(b) Check the EFI relay resistance.
Standard:
Tester ConnectionSpecified Condition
3 – 510 kΩ or higher
3 – 5Below 1 Ω
(Apply battery voltage to terminals 1 and 2)
(c) Reinstall the EFI relay.
NG REPLACE EFI RELAY
OK
3 INSPECT ECM(HT1B VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the applicable terminals of
the E9 and E12 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
HT1B (E9–7) – E03 (E12–7)9 to 14 V