2005 TOYOTA AVENSIS Service Repair Manual

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Page 3913 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual B16200
A72895
Wire Harness Side
B1S2
B2S2 H8
H10
Heated Oxygen Sensor ConnectorOX
HT
E1
A76824OX2BECM Connector E12
OX1B
HT2BHT1B
O1B±
O2B± E11
05±392
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS RE

Page 3914 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A72920
Reference (Bank 1 Sensor 2 System Drawing)
Heated Oxygen Sensor
EFI Relay
Heater
Sensor
OX1B HT1B
Duty
Control ECM
From
Battery
EFI Fuse
O1B± EFI No. 2
Fuse
MREL OX HT
E1 +B
± DIAGNOSTICSS

Page 3915 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05±374
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0133OXYGEN SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1)
DTCP0153OXYGEN SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 1

05±374
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0133OXYGEN SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1)
DTCP0153OXYGEN SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05±363.
DTC No.DTC Detection ConditionTrouble Area
P0133
P0153
Response time for output voltage of heated oxygen sensor
(sensor 1) to change from rich to lean, or from lean to rich, is
1.0 sec. or more during idling after engine is warmed up
(2 trip detection logic)
Open or short in heated oxygen sensor (bank 1, 2 sensor 1)
circuit
Heated oxygen sensor (bank 1, 2 sensor 1)
Heated oxygen sensor heater (bank 1, 2 sensor 1)
EFI relay
Air induction system
Fuel pressure
Injector
ECM
HINT:
Bank 1 refers to the No. 1 and No. 4 cylinders.
Bank 2 refers to the No. 2 and No. 3 cylinders.
Sensor 1 refers to the sensor closest to the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05±363.
INSPECTION PROCEDURE
HINT:
Hand±held tester only:
Narrowing down the trouble area is possible by performing the ºA/F CONTROLº ACTIVE TEST (heated oxy-
gen sensor or other trouble areas can be distinguished).
(a) Perform ACTIVE TEST using the hand±held tester (A/F CONTROL).
HINT:
ºA/F CONTROLº is an ACTIVE TEST which changes the injection volume\
±12.5 % or +25 %.
(1) Connect the hand±held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 9\
0 sec.
(4) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROLº\
.
(5) Perform ºA/F CONTROLº 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 0.55 V
±12.5 % lean output: Less than 0.4 V
NOTICE:
There is a few seconds delay in the sensor 1 (front sensor) output. And there is about 20 seconds
delay in the sensor 2 (rear sensor).
05CKA±01

Page 3916 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual +25 %
±12.5 %
More than 0.55 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 oxy

+25 %
±12.5 %
More than 0.55 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)Mainly suspect
trouble area
OK
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
Sensor 1: front sensor
(sensor 1, heater, sensor 1
circuit)
+25 %
±12.5 %
More than 0.55 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
No reaction
No reaction
No reaction No reaction

Sensor 2: rear sensor
(sensor 2, heater, sensor 2
circuit)
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±375
AVENSIS REPAIR MANUAL (RM1018E)
The following A/F CONTROL procedure enables the technician to check and graph the voltage outputs of
both the heated oxygen sensors.
For displaying the graph indication, enter ºACTIVE TEST / A/F CONTROL / USER DATAº, then select ºO2S
B1S1 and O2S B1S2º or ºO2S B2S1 and O2S B2S2º by pressing ºYESº button and push ºENTERº button
before pressing ºF4º button.
NOTICE:
If the vehicle is short of fuel, the air±fuel ratio becomes LEAN and DTCs P0133 and/or P0153 will be
recorded, and the CHK ENG then comes on.
HINT:
If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may be open.
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ratio was lean or rich, etc. at
the time of the malfunction.
A high heated oxygen sensor (sensor 1) voltage (0.55 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.

Page 3917 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A73686
05±376
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P0133 AND/OR P0153)
(a)Read the DTC using the hand±held tester. Result:

Page 3918 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A62378
Component Side
+B
HT
E1

B1S1 H7
A61830
+B
HT
E1 Component Side
B2S1 H9
B16200
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±377
AVENSIS REPAIR MANUAL (RM1018E)
4 READ OUTPUT DTC(DTC P0133 A

Page 3919 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A76821
Wire Harness Side
B1S1B2S1 H7 H9
Heated Oxygen Sensor Connector OX
HT
OX
HT
E1E1
A76823
OX2A
ECM Connector E12
OX1A
HT2A HT1A
E2 E13
A72920
Reference (Bank 1 Sensor 1 System Drawing)
Heated Oxy

Page 3920 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual ±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±379
AVENSIS REPAIR MANUAL (RM1018E)
8CHECK AIR INDUCTION SYSTEM
(a)Check for vacuum leaks in the air induction system.
NGREPAIR OR REPLACE AIR INDUCTION SYSTE

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