2005 TOYOTA AVENSIS control arm

+25 %
±12.5 %
More than 3.35 V
Less than 3.0 V
Case 1
Case 2
Case 3
Case 4
Output voltage of A/F sensor
(sensor 1)
Injection volume
Output voltage
Output voltage of heated oxygen
sensor (sensor 2)Mainly suspect
trouble area
OK
+25 %
±12.5 %
More than 3.35 V
Less than 3.0V
Injection volume
Output voltage
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
A/F sensor
(A/F sensor, heater, A/F sen-
sor 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


Heated oxygen sensor
(heated oxygen sensor,
heater, heated oxygen sensor
circuit) 05±214
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
NOTICE:
There is a few second delay in the A/F sensor output, and there is about 20 seconds delay in the
heated oxygen sensor output.
The following procedure of A/F CONTROL enables the technician to check and graph the voltage outputs
of both the A/F sensor and heated oxygen sensor.
For displaying the graph indication, enter ºACTIVE TEST/ A/F CONTROL/USER DATAº, then select ºAFS
B1S1 and O2S B1S2º or ºAFS B2S1 and O2S B2S2º by pressing ºYESº button and push ºENTERº button
before pressing ºF4º button.
HINT:

If different DTCs that are related to a different system are output simultaneously while terminal E2 is
used as a ground terminal, terminal E2 may be open.

Read freeze frame data using   
 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.

A59779
C2
Camshaft Timing Oil
Control Valve1
2 ECM
W±G OC1+
14
Y±B OC1±
E13
15
E13
05±170
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
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 determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
When using hand±held tester:
1PERFORM ACTIVE TEST BY HAND±HELD TESTER(OCV OPERATION)
(a)Connect the hand±held tester to the DLC3.
(b)Start the engine and warm it up.
(c)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(d)Select the item ºDIAGNOSIS / OBD/MOBD/ ACTIVE TEST / VVT CTRL B1 or V\
VT CTRL B2º.
(e)Check the engine speed when operating the OCV by the hand±held tester. Standard:
Tester operationSpecified condition
OCV is OFFNormal engine speed
OCV is ONRough idle or engine stall
OKCHECK FOR INTERMITTENT PROBLEMS (See page 05±149)
NG
2INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY (See page 10±20)
NG REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY
OK

05±252
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Hand±held tester only:
Narrowing down the trouble area is possible by performing ACTIVE TEST of the following ºA/F CONTROLº
(A/F sensor, heated oxygen 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 with the engine speed 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:
A/F sensor reacts in accordance with increase and decrease of injection volume:
+25 %
rich output: Less than 3.0 V
±12.5 %
lean output: More than 3.35 V
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 second delay in the A/F sensor output, and there is about 20 seconds delay in the
heated oxygen sensor output.

+25 %
±12.5 %
More than 3.35 V
Less than 3.0 V
Case 1
Case 2
Case 3
Case 4
Output voltage of A/F sensor
(sensor 1)
Injection volume
Output voltage
Output voltage of heated oxygen
sensor (sensor 2)Mainly suspect
trouble area
OK
+25 %
±12.5 %
More than 3.35 V
Less than 3.0V
Injection volume
Output voltage
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
A/F sensor
(A/F sensor, heater, A/F sen-
sor 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


Heated oxygen sensor
(heated oxygen sensor,
heater, heated oxygen sensor
circuit)
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±253
AVENSIS REPAIR MANUAL (RM1018E)
The following procedure of A/F CONTROL enables the technician to check and graph voltage output of both
the A/F sensor and heated oxygen sensor.
For displaying the graph indication, enter ºACTIVE TEST/ A/F CONTROL/USER DATAº, then select ºAFS
B1S1 and O2S B1S2º or ºAFS B2S1 and O2S B2S2º by pressing ºYESº button and push ºENTERº button
before pressing ºF4º button.
HINT:

If DTC   
        is displayed, check bank 1
sensor 1 circuit.

If DTC         
 is displayed, check bank 2
sensor 1 circuit.

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.

A58697
Intake Air
Chamber
Throttle Valve
To Cylinder
ISC Valve
Valve
ECM
Signal From
Air
Cleaner
From
Terminal 2 of
EFI No.1 Fuse
(See Page 05±257)
A79101
2 +B DUTY1
GND 3
I10
ISC Valve
G±R10
E12 RSDECM
B±R 12
EA1 B±R
W±B7
E12 E1
BR
EF
±
DIAGNOSTICS SFI SYSTEM (1AZ±FE)
05±243
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0511/33 IDLE AIR CONTROL CIRCUIT
CIRCUIT DESCRIPTION
The rotary solenoid type idle speed control (ISC) valve is lo-
cated under the throttle body and intake air bypassing the
throttle valve is directed to the idle speed control (ISC) valve
through the passage.
In this way the intake air volume bypassing the throttle valve is
regulated, controls the engine speed.
The ECM operates the idle speed control (ISC) valve only to
perform idle±up and provide feedback for the target idling
speed.
DTC No.DTC Detecting ConditionTrouble Area
P0511/33Idle speed continues to vary greatly from target speed
(1 trip detection logic)

Open or short in idle speed control (ISC) valve circuit

Idle speed control (ISC) valve is stuck or closed

A/C switch circuit

Air induction system

ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f  \b \f\f
 Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
05C74±01

05±302
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)Hand±held Tester DisplayDiagnostic Note Normal Condition *
1Measurement Item/Range
(Display)
MAFAir flow rate from MAF sensor/
Min.: 0 gm/s, Max.: 655 gm/s
Idling: 3.2 to 4.7 gm/s

Running without load (2,500
rpm): 13.1 to 18.9 gm/s
If the value is Approximately 0.0
gm/s:

Mass air flow meter power
source circuit open

VG circuit open or short
If the value is 160.0 gm/s or more:

E2G circuit open
MAP
Absolute pressure inside intake
manifold/
Min.: 0 kPa, Max.: 224 kPa
Idling: 22 to 32 kPa

Running without load (2,500
rpm): 20 to 30 kPa
If the value is Approximately 0.0
kPa:

PIM circuit short
If the value is 142.0 kPa or more:

VC circuit open or short

PIM circuit open

E2 circuit open
ENGINE SPDEngine speed/
Min.: 0 rpm, Max.: 16383 rpmIdling: 625 to  rpm

COOLANT TEMPCoolant temperature/
Min.: ±40C, Max.: 140CAfter warming up: 80 to 95C (176
to 203
If the value is ±40C (±40F):

Sensor circuit is open.
INTAKE AIRIntake air temperature/
Min.: ±40C, Max.: 140CEquivalent to Ambient Temp.

Sensor circuit is oen.
If the value is 140C (284F):

Sensor circuit is shorted.
THROTTLE POSAbsolute throttle position sensor/
Min.: 0 %, Max.: 100 %
Throttle fully closed: 10 to 24 %

Throttle fully open: 64 to 96 %Read the value with ignition switch
ON (Do not start engine).
CTP SWClosed throttle position switch/
ON or OFF
Throttle fully closed: ON

Throttle open: OFF

VEHICLE SPDVehicle speed/
Min.: 0 km/h, Max.: 255 km/hActual vehicle speedSpeed indicated on speedometer
ACCEL POS #1
Accelerator pedal position sensor
No.1 output voltage/
Min.: 0 V, Max.: 5 V
Accelerator pedal released:
0.5 to 1.1 V

Accelerator pedal depressed:
2.5 to 4.6 V
Read the value with ignition switch
ON (Do not start engine).
ACCEL POS #2
Accelerator pedal position sensor
No.2 output voltage/
Min.: 0 V, Max.: 5 V
Accelerator pedal released:
1.5 to 2.9 V

Accelerator pedal depressed:
3.5 to 5.5 V
Read the value with ignition switch
ON (Do not start engine).
THROTTLE POS #2Throttle position sensor No.2 out-
put voltage/ Min.: 0 V, Max.: 5 V
Throttle fully closed: 2.1 to 3.1 V

Throttle fully open: 4.5 to 5.5 VRead the value with ignition switch
ON (Do not start engine).
THROTTLE TARGTTarget position of throttle valve/
Min.: 0 V, Max.: 5 VIdling: 0.4 to 1.1 V

THROTTLE OPN DUTYThrottle motor opening duty ratio/
Min.: 0 %, Max.: 100 %Throttle fully closed: 0 %

When accelerator pedal is de-
pressed, duty ratio is increased.

Read the value with ignition
switch ON (Do not start engine)
THROTTLE CLS DUTYThrottle motor closed duty ratio/
Min.: 0 %, Max.: 100 %Throttle fully closed: 0 %

When accelerator pedal is re-
leased quickly, duty ratio is in-
creased.

Read the value with ignition
switch ON (Do not start engine)
THROTTLE MOTWhether or not throttle motor con-
trol is permitted/ ON or OFFIdling: ON

+BM
Whether or not electric throttle
control system power is inputted/
ON or OFF
Idling: ON

05±304
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)Hand±held Tester DisplayDiagnostic Note Normal Condition *
1Measurement Item/Range
(Display)
O2FT B1 S1
Short term fuel trim associated
with the bank 1 sensor 1/
Min.: ±100 %, Max.: 100 %
0 20 %Same as SHORT FT #1
O2FT B1 S2
Short term fuel trim associated
with the bank 1 sensor 2/
Min.: ±100 %, Max.: 100 %
0 20 %Same as SHORT FT #1
O2FT B2 S1
Short term fuel trim associated
with the bank 2 sensor 1/
Min.: ±100 %, Max.: 100 %
0 20 %Same as SHORT FT #2
O2FT B2 S2
Short term fuel trim associated
with the bank 2 sensor 2/
Min.: ±100 %, Max.: 100 %
0 20 %Same as SHORT FT #2
FUEL SYS #1
Fuel system status (Bank1) /
OL or CL or OL DRIVE or
OL FAULT or CL FAULT
Idling after warming up: CL

OL: Open Loop±has not yet sa-
tisfied conditions to go closed
loop.

CL: Closed Loop±using heated
oxygen sensor(s) as feed back
for fuel control.

OL DRIVE: Open loop due to
driving conditions (fuel enrich
FUEL SYS #2
Fuel system status (Bank2) /
OL or CL or OL DRIVE or
OL FAULT or CL FAULT
Idling after warming up: CLdriving conditions. (fuel enrich-
ment)

OL FAULT: Open loop due to de-
tected system fault.

CL FAULT: Closed loop but one
of heated oxygen sensors, which
is used for fuel control, is func-
tioning improperly.
FC IDLFuel cut idle/ ON or OFFFuel cut operation: ON
FC IDL= ºONº when throttle valve
fully closed and engine speed is
over 1,500 rpm.
MILMIL status/ ON or OFFMIL ON: ON

O2 LR B1 S1
Oxygen sensor lean rich bank 1
sensor 1:
Response time for oxygen sensor
output to switch from lean to rich/
Min.: 0 ms, Max.: 16,711 ms
O2 LR B2 S1
Oxygen sensor lean rich bank 2
sensor 1:
Response time for oxygen sensor
output to switch from lean to rich/
Min.: 0 ms, Max.: 16,711 ms
Idling after warming up:
O2 RL B1 S1
Oxygen sensor rich lean bank 1
sensor 1:
Response time for oxygen sensor
output to switch from rich to lean/
Min.: 0 ms, Max.: 16,711 ms
Idling after warming u:
0 to 1,000 msec.

O2 RL B2 S1
Oxygen sensor rich lean bank 2
sensor 1:
Response time for oxygen sensor
output to switch from rich to lean/
Min.: 0 ms, Max.: 16,711 ms
STARTER SIGStarter signal/ ON or OFFCranking: ON

A/C SIGA/C signal/ ON or OFFA/C ON: ON

PNP SW [NSW] *2Park/neutral position switch signal/
ON or OFFP or N position: ON

± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±305
AVENSIS REPAIR MANUAL (RM1018E)Hand±held Tester DisplayDiagnostic Note Normal Condition *
1Measurement Item/Range
(Display)
ELECT LOAD SIGElectrical load signal/
ON or OFF
Tail light switch ON: ON

Defogger switch ON: ON

STOP LIGHT SWStop light switch/
ON or OFF
Brake pedal depressed: ON

Brake pedal released: OFF

PS OIL PRESS SWPower steering signal/
ON or OFF

While turning the steering wheel:
ON

While not turning the steering
wheel: OFF
The idle±up control is performed
when PS is ON.
PS SIGNALPower steering signal/
ON or OFFWhen the steering wheel is turned:
ONThis signal is usually ON status
until the IG switch is turned OFF.
SCV VSVVSV status for intake air control
valve/ ON or OFFVSV operation: ON

FUEL PUMP / SPDFuel pump/speed status/
ON/H or OFF/M,LIdling: ON

EVAP VSVVSV status for EVAP control/
ON or OFFVSV operating: ONVSV for EVAP is controlled by the
ECM (ground side duty control)
VVT CTRL B1VVT control status (bank 1)/
ON or OFFVVT system operation: ON

IGNITIONIgnition counter/ Min.: 0, Max.: 4000 to 400

CYL #1, #2, #3, #4Misfire ratio of the cylinder 1 to 4/
Min.: 0 %, Max.: 50 %0 %This item is displayed in only idling
MISFIRE RPMEngine RPM for first misfire range/
Min.: 0 rpm, Max.: 6,375 rpmMisfire 0: 0 rpm

FC TAUFuel Cut TAU: Fuel cut during very
light load/ ON or OFFFuel cut operating: ON
The fuel cut is being performed un-
der very light load to prevent the
engine combustion from becoming
incomplete.
CHECK MODECheck mode/ ON or OFFCheck mode ON: ONSee step 3
O2 RL B1 S2
Oxygen sensor rich lean bank 1
sensor 2:
Response time for oxygen sensor
output to switch from rich to lean/
Min.: 0 ms, Max.: 16,702.5 ms
Idling after warming up:
O2 RL B2 S2
Oxygen sensor rich lean bank 2
sensor 2:
Response time for oxygen sensor
output to switch from rich to lean/
Min.: 0 ms, Max.: 16,702.5 ms
Idling after warming u:
0 to 1,000 msec.

MIL ON RUN DIST
Distance since activation of check
engine warning light/
Min.: 0 km, Max.: 65,535 km
When there is no DTC: 0 km

FUEL PRESS
Fuel high pressure inside fuel de-
livery pipe/
Min.: 0 MPa, Max.: 819 MPa
Idling: 8 to 13 MPa

Running without load (3,000
rpm): 9.5 to 10.5 MPa


*1: If no conditions are specifically stated for ºldlingº, it means the shift lever is at the N or P position, the A/C
switch is OFF and all accessory switches are OFF.
*
2: For A/T only