2005 TOYOTA AVENSIS Service Repair Manual

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Page 545 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±367
AVENSIS REPAIR MANUAL (RM1018E)
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 90 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).

Page 546 of 5135

$TOYOTA AVENSIS 2005 Service Repair Manual 05±368 ± DIAGNOSTICS SFI SYSTEM(1AZ±FSE) AVENSIS REPAIR MANUAL (RM1018E) The following A/F CONTROL procedure enables the technician to check and gra\ ph the voltage outputs of both the heated oxy$

05±368
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
The following A/F CONTROL procedure enables the technician to check and gra\
ph 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 butto\
n
before pressing ºF4º 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 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 deter\
mining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ra\
tio was lean or rich, etc. at
the time of the malfunction.
A high heated oxygen sensor (sensor 1) voltage (0.55 V or more) coul\
d 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 b\
e caused by a lean air fuel mix-
ture. Check for conditions that would cause the engine to run lean.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO HEATED OXYGEN SENSOR DTCS)
(a)Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed to
Only ºP0130, P0150, P2195, P2196, P2197 and/or P2198º are outputA
ºP0130, P0150, P2195, P2196, P2197 or P2198º and other DTCs are ou\
tputB
HINT:
If any other codes besides ºP0130, P0150, P2195, P2196, P2197 and/or P2\
198º are output, perform
the troubleshooting for those DTCs first.
If a misfiring DTC(s) is present, record the DTC(s) that indicates mis\
firing cylinder(s), then proceed to
A.
BGO TO RELEVANT DTC CHART(See page 05±309)
A

Page 547 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual P18349
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±369
AVENSIS REPAIR MANUAL (RM1018E)
2 READ VALUE OF HAND±HELD TESTER(OUTPUT VOLTAGE OF HEATED OXYGEN
SENSOR)
(a) Warm up the heated oxygen sensor (sen

Page 548 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
05±370
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
5 INSPECT HEATED OXYGEN SENSO

Page 549 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 550 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05±372
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
8CHECK AIR INDUCTION SYSTEM
(a)Check for vacuum leaks in the air induction system. NGREPAIR OR REPLACE AIR INDUCTION SYSTE

Page 551 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual ± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±373
AVENSIS REPAIR MANUAL (RM1018E)
14 READ OUTPUT DTC(HEATED OXYGEN SENSOR DTCS ARE OUTPUT AGAIN)
(a) Read the DTC using the hand±held tester.
Result:
Displ

Page 552 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05±474
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0705TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)
CIRCUIT DESCRIPTION
The park/neutral position switch g

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