2005 TOYOTA AVENSIS diagnostic

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

± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±303
AVENSIS REPAIR MANUAL (RM1018E)Hand±held Tester DisplayDiagnostic Note Normal Condition *
1Measurement Item/Range
(Display)
ACCEL IDL POS
Whether or not accelerator pedal
position sensor is detecting idle/
ON or OFF
Idling: ON

THROTTLE IDL POS
Whether or not throttle position
sensor is detecting idle/
ON or OFF
Idling: ON

FAIL #1Whether or not fail safe function is
executed/ ON or OFFETCS has failed: ON

FAIL #2Whether or not fail safe function is
executed/ ON or OFFETCS has failed: ON

THROTTLE INITIALThrottle fully closed learned value
Min.: 0 V, Max.: 5 V0.5 to 0.9 V

ACCEL LEARN VAL
Accelerator fully closed learned
value
Min.: 0 V, Max.: 5 V
0.4 to 1.4 V

THROTTLE MOTThrottle motor current
Min.: 0 A, Max.: 20 AIdling: 0 to 3.0 A

O2S B1 S1
Heated oxygen sensor output volt-
age for bank 1 sensor 1/
Min.: 0 V, Max.: 1.0 V
O2S B1 S2
Heated oxygen sensor output volt-
age for bank 1 sensor 2/
Min.: 0 V, Max.: 1.0 V
Driving (50 km/h, 31 mph):
Performing the INJ VOL or A/F
CONTROL function of the ACTIVE
O2S B2 S1
Heated oxygen sensor output volt-
age for bank 2 sensor 1/
Min.: 0 V, Max.: 1.0 V
Driving (50 km/h, 31 m h):
0.1 to 0.9 VCONTROL function of the ACTIVE
TEST enables the user to check
the voltage output of each sensor.
O2S B2 S2
Heated oxygen sensor output volt-
age for bank 2 sensor 2/
Min.: 0 V, Max.: 1.0 V
SHORT FT #1Short term fuel trim of bank 1/
Min.: ±100 %, Max.: 100%0 20 %
This item is the short±term fuel
compensation used to maintain the
air±fuel ratio at stoichiometric air±
fuel ratio
LONG FT #1Long term fuel trim of bank 1/
Min.: ±100 %, Max.: 100 %0 20 %
This item is the overall fuel com-
pensation carried out in long±term
to compensate for a continual
deviation of the short±term fuel
trim from the central value.
TOTAL FT #1
Total fuel trim bank 1:
Average value for fuel trim system
of bank 1/
Min.: 0.5, Max.: 1.496
Idling: 0.5 to 1.4

SHORT FT #2Short term fuel trim of bank 2/
Min.: ±100 %, Max.: 100 %0 20 %
This item is the short±term fuel
compensation used to maintain the
air±fuel ratio at stoichiometric air±
fuel ratio
LONG FT #2Long term fuel trim of bank 2/
Min.: ±100 %, Max.: 100 %0 20 %
This item is the overall fuel com-
pensation carried out in long±term
to compensate for a continual
deviation of the short±term fuel
trim from the central value.
TOTAL FT #2
Total fuel trim bank 2:
Average value for fuel trim system
of bank 2/
Min.: 0.5, Max.: 1.496
Idling: 0.5 to 1.4

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

05±306
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
7. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one method
to shorten diagnostic time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the hand±held tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Push the ºONº button of the hand±held tester.
(f) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TESTº
(g) According to the display on tester, perform the ºACTIVE TESTº.
Hand±held Tester DisplayTest DetailsDiagnostic Note
INJ VOL
[Test Details]
Control the injection volume
Min.: ±12.5 %, Max.: 25 %
[Vehicle Condition]
Engine speed: 3,000 rpm or less
All injectors are tested at once.

Injection volume is gradually
changed between ±12.5 and 25
%.
A/F CONTROL
[Test Details]
Control the injection volume
±12.5 or 25 % (Change the injection volume ±12.5 % or 25 %.)
[Vehicle Condition]
Engine speed: 3,000 rpm or less
The following procedure of A/F
CONTROL enables the user to
check its output (show its graph
indication) of sensor 1 and sensor
2:
For displaying the graph indication,
enter ºACTIVE TEST / A/F CON-
TROL / USER DATAº, then select
ºO2S B1 S1 and O2S B1 S2º by
pressing ºYESº button and push
ºENTERº button before pressing
ºF4º button.
SCV VSV
[Test Details]
Activate the VSV for intake air control valve.
ON or OFF


EVAP VSV (ALONE)
[Test Details]
Activate the VSV for EVAP control
ON or OFF


FUEL PUMP / SPD
[Test Details]
Control the fuel pump
ON or OFF


VVT CTRL B1
[Test Details]
Active the VVT system (Bank 1).
ON or OFF
ON: Rough idle or engine stall.

OFF: Normal engine speed.
TC/TE1
[Test Details]
Connect the TC and TE1
ON or OFF


FC IDL PROHBT
[Test Details]
Control the idle fuel cut prohibit
ON or OFF

A59673
Inside
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±307
AVENSIS REPAIR MANUAL (RM1018E)
BASIC INSPECTION
When the malfunction code is not confirmed in the DTC check, troubleshooting should be carried out in all
the possible circuits considered as causes of the problems. In many cases, by carrying out the basic engi\
ne
check shown in the following flow chart, the location causing the problem can be found quickly and efficiently.
Therefore, using this check is essential in the engine troubleshooting.
1CHECK BATTERY VOLTAGE
NOTICE:
Carry out this check with the engine stopped and ignition switch OFF.
OKNG
Voltage11 V or moreLess than 11 V
NGCHARGE OR REPLACE BATTERY
OK
2CHECK IF ENGINE WILL CRANK
NGPROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05±320
OK
3CHECK IF ENGINE STARTS
NGGO TO STEP 7
OK
4CHECK AIR FILTER
(a)Visually check that the air filter is not excessively dirty or oily.
NOTICE:
If necessary, clean the filter with compressed air. First blow
from the inside thoroughly, then blow from the outside of
the filter.
NGCLEAN OR REPLACE
OK
5CHECK IDLE SPEED (See page 14±181)
NGPROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05±320
OK

05±308
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
6CHECK IGNITION TIMING (See page 14±181)
NGPROCEED TO PAGE AND CONTINUE TO TROU- BLESHOOT
OK
PROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05±320
7CHECK FUEL PRESSURE (See page 11±33)
NGPROCEED TO PAGE 11±33 AND CONTINUE TO TROUBLESHOOT
OK
8CHECK FOR SPARK (See page 18±12)
NGPROCEED TO PAGE 18±12 AND CONTINUE TO TROUBLESHOOT
OK
PROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05±320

05CDT±01
ENGINE CONTROL SYSTEM Check Sheet
Customer's Name
Driver's Name
Date Vehicle
Brought in
License No.
VIN
Production Date
Licence No.
Odometer Reading
km
miles
Problem Symptoms
Engine does
not Start
Difficult to
Start
Poor Idling
Poor
Driveability
Engine Stall
Others
Engine does not crankNo initial combustionNo complete combustion
Engine cranks slowly
Other
Incorrect first idleIdling rpm is abnormalHigh ( rpm)Low ( rpm)
Rough idling
Other
HesitationBack fireMuffler explosion (after±fire)Surging
Knocking
Other
Soon after startingAfter accelerator pedal depressed
After accelerator pedal released
During A/C operation
Shifting from N to D
Other
Data Problem
Occurred
Problem Frequency
Condition When
Problem Occurs
Weather
Engine Operation
Engine Temp. Place Outdoor
TemperatureConstant
Sometimes ( times per day/month)Once only
Other
Fine
CloudyRainySnowyVarious/Other
Hot
Warm Cool
HighwaySuburbsInner CityUphillDownhill
Rough road
Other
Cold
Warming upAfter Warming upAny temp.Other
Starting
Just after starting ( min.)IdlingRacing
Driving
Constant speedAccelerationDeceleration
A/C switch ON/OFF
Other
Condition of check engine warning light
(CHK ENG)Remains on Sometimes lights up Does not light up
Normal Malfunction code(s) (code )
Freeze frame data ( )
Normal Malfunction code(s) (code )
Freeze frame data ( )
Normal mode
(Pre±check)
Check Mode DTC InspectionInspector's
Name
Cold (approx.
C/
F)
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±293
AVENSIS REPAIR MANUAL (RM1018E)
CUSTOMER PROBLEM ANALYSIS CHECK