2005 TOYOTA AVENSIS fuel

05±316
±
DIAGNOSTICS SFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E) 


\f  
*
1
CHK ENG
 
 \b
P2122
(05±492)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Low Input
P2123
(05±492)Throttle/Pedal Position Sensor/
Switch ºDº Circuit High Input
P2125
(05±492)Throttle/Pedal Position Sensor/
Switch ºEº Circuit
Same as DTC No. P2120
P2127
(05±492)Throttle/Pedal Position Sensor/
Switch ºEº Circuit Low Input
P2128
(05±492)Throttle/Pedal Position Sensor/
Switch ºEº Circuit High Input
P2135
(05±356)Throttle Pedal Position Sensor/
Switch ºAº/ºBº Voltage Correla-
tion
VTA1 and VTA2 circuit are short±circuited

Throttle position sensor (built in throttle body)

ECM

P2138
(05±492)Throttle Pedal Position Sensor/
Switch ºDº/ºEº Voltage Correla-
tion

Same as DTC No. P2120
P2195 *3
(05±363)
Oxygen Sensor Signal Stuck
Lean (Bank 1 Sensor 1)
Open or short in heated oxygen sensor (bank 1, 2 sensor 1)
circuit
P2196 *3
(05±363)
Oxygen Sensor Signal Stuck
Rich (Bank 1 Sensor 1)
Heated oxygen sensor (bank 1, 2 sensor 1)

Heated oxygen sensor heater (bank 1, 2 sensor 1)

EFI relay

P2197 *3
(05±363)
Oxygen Sensor Signal Stuck
Lean (Bank 2 Sensor 1)
EFI relay

Air induction system

Fuel pressure

P2198 *3
(05±363)
Oxygen Sensor Signal Stuck
Rich (Bank 2 Sensor 1)

Fuel ressure

Injector

ECM
P2716 *4
(05±967)
Pressure Control Solenoid ºDº
Electrical
Electronic controlled automatic transmission (ECT)
B2799
(05±1625)Engine Immobiliser System Mal-
function
Immobiliser system

*1: CHK ENG (Check engine warning light) is illuminated
*
2: CHK ENG (Check engine warning light) is illuminated or blinks
*
3: For Euro±OBD vehicles only.
*
4: For A/T only.

FI2547
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±295
AVENSIS REPAIR MANUAL (RM1018E)

* 2 trip detection logic
When a logic malfunction is first detected, the mal-
function is temporally stored in the ECM memory
(1st trip). If the same malfunction is detected again
during the second drive test, this second detection
causes the CHK ENG to illuminate (2nd trip) (How-
ever, the ignition switch must be turned OFF be-
tween the 1st trip and 2nd trip).

Freeze frame data:
Freeze frame data records the engine condition
when a misfire (DTCs P0300 ± P0304) or fuel trim
malfunction (DTCs P0171, P0172, P0174 and
P0175) or other malfunction (first malfunction only)
is detected.
Because freeze frame data records the engine
conditions (fuel system, calculated load, engine
coolant temperature, fuel trim, engine speed, ve-
hicle speed, etc.) when the malfunction is detected.
When troubleshooting, it is useful for determining
whether the vehicle was running or stopped, the en-
gine warmed up or not, the air±fuel ratio lean or rich,
etc. at the time of the malfunction.

Priorities for troubleshooting:
If troubleshooting priorities for multiple DTCs are
given in the applicable DTC chart, these should be
followed.
If no instructions are given, troubleshoot according to the fol-
lowing priorities.
(1) DTCs other than fuel trim malfunction (DTCs
P0171, P0172, P0174 and P0175) and misfire
(DTCs P0300 ± P0304).
(2) Fuel trim malfunction (DTCs P0171, P0172, P0174
and P0175).
(3) Misfire (DTCs P0300 ± P0304).
(b) Description for M±OBD (Except European spec.)

When troubleshoot Multiplex OBD (M±OBD) ve-
hicles, the only difference from the usual trouble-
shooting procedure is that you connect the hand±
held tester to the vehicle, and read off various data
output from the vehicle's ECM.

A76859
Hand±Held Tester
DLC3
05±296
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)

The vehicle's on±board computer illuminates the
check engine warning light (CHK ENG) on the
instrument panel when the computer detects a mal-
function in the computer itself or in drive system
components. In addition to an illumination of the
CHK ENG when a malfunction is detected, the ap-
plicable Diagnostic Trouble Codes (DTCs) are re-
corded in the ECM memory (See page 05±309). If
the malfunction does not recur, the CHK ENG lamp
will be disappeared by turning off the ignition switch
but the recorded DTC will be remaining in the ECM
memory.

To check the DTCs, connect the hand±held tester
to the Data Link Connector 3 (DLC3) on the vehicle.
The hand±held tester also enables you to erase the
DTCs and check the freeze frame data and various
forms of engine data. (for operating instructions,
see the instruction book.)

The diagnosis system operates in the normal mode
during normal vehicle use. It also has a check (test)
mode for technicians to simulate malfunction symp-
toms and troubleshoot. Most DTCs use 2 trip detec-
tion logic* to prevent erroneous detection, and to
ensure a thorough malfunction detection. By
switching the ECM to the check (test) mode using
hand±held tester when troubleshooting, a techni-
cian can cause the CHK ENG to illuminate for a mal-
function that is only detected once or momentarily
(Hand±held tester only) (See step 3).

* 2 trip detection logic
When a logic malfunction is first detected, the mal-
function is temporally stored in the ECM memory
(1st trip). If the same malfunction is detected again
during the second drive test, this second detection
causes the CHK ENG to illuminate (2nd trip) (How-
ever, the ignition switch must be turned OFF be-
tween the 1st trip and 2nd trip).

Freeze frame data:
Freeze frame data records the engine conditions
(fuel system, calculator load, water temperature,
fuel trim, engine speed, vehicle speed, etc.) 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.

05±300
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
4. FAIL±SAFE CHART
If any of the following codes is recorded, the ECM enters into the fail±safe mode.
DTC No.Fail±Safe OperationFail±Safe Deactivation Conditions
P0031
P0032
P0037
P0038
P0051
P0052
P0057
P0058
Faulty heater circuit is turned off.Ignition switch is OFF.
P0100
P0102
P0103Ignition timing is calculated based on an engine speed and
a throttle opening angle.ºPassº detection has occurred. Upon this occurrence, the
ECM will return to normal mode.
P0105
P0107
P0108
Intake air pressure is controlled with a calculated value in
proportion to the throttle opening angle and the engine
speed.

Limit the engine speed to 3,000 rpm or less.
ºPassº detection has occurred. Upon this occurrence, the
ECM will return to normal mode.
P0110
P0112
P0113
Intake air temperature is fixed at 20 C (68 F)ºPassº detection has occurred. Upon this occurrence, the
ECM will return to normal mode.
P0115
P0117
P0118
Engine coolant temperature is fixed at 80   ºPassº detection has occurred. Upon this occurrence, the
ECM will return to normal mode.
P0120
P0121
P0122
P0123
P0220
P0222
P0223
P2135
Turn off the power for the throttle motor, return the throttle
valve in position using the return spring, and fuel cut inter-
mittent.Repeat the following conditions at least 2 seconds or more
with the throttle position switch closed:

VTA is more than 0.1 V but less than 0.95 V

Engine speed is 0 km/h
P0190
P0191
Stop the high±pressure pump operation.

Limit the engine speed to 2,000 rpm or less.After it is returned to normal condition, turn the ignition switch
ON.
P0200Turn off the INJ relay and cut the power for the EDU.
P0201
P0202
P0203
P0204
Stop fuel injection for an abnormal cylinder and related
other cylinders.

Limit the engine speed to 3,000 rpm or less.After it is returned to normal condition, turn the ignition switch
ON.
P0325
P0327
P0328
Maximum timing retardationIgnition switch is OFF.
P0351
P0352
P0353
P0354
Stop fuel injection for all the cylinders.ºPassº detection has occurred. Upon this occurrence, the
ECM will return to normal mode.
P0604
P0606
P0607
P0657Turn off the power for the throttle motor, return the throttle
valve in position using the return spring, and fuel cut inter-
mittent.After it is returned to normal condition, turn the ignition switch
ON.
P1235
Stop the high±pressure pump operation.

Limit the engine speed to 2,000 rpm or less.After it is returned to normal condition, turn the ignition switch
ON.
P2008Force IACV to close.After it is returned to normal condition, turn the ignition switch
ON.

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±301
AVENSIS REPAIR MANUAL (RM1018E)DTC No.
Fail±Safe Deactivation Conditions
Fail±Safe Operation
P2102
P2103
P2111
P2112
P2118
P2119
Turn off the power for the throttle motor, return the throttle
valve in position using the return spring, and fuel cut inter-
mittent.After it is returned to normal condition, turn the ignition switch
ON.
P2120
P2121
P2122
P2123
P2125
P2127
P2128
P2138

If both VPA1 and VPA2 are malfunctioning:
Fixed at idle

If either of VPA1 or VPA2 is malfunctioning:
Fuel cut intermittently
After it is returned to normal condition, turn the ignition switch
ON.
5.CHECK FOR INTERMITTENT PROBLEMS
Hand±held tester only:
By putting the vehicle's ECM in the check mode, the 1 trip detection logic is possible instead \
of the 2 trip
detection logic, and the sensitivity to detect faults is increased. This\
makes it easier to detect intermittent
problems.
(a)Clear the DTCs (See step 2).
(b)Set the check mode (See step 3).
(c)Perform a simulation test (See page 01±22).
(d)Check the connector and terminal (See page 01±32).
(e)Wiggle the harness and the connector (See page 01±32).
6. DATA LIST
HINT:
Using the DATA LIST displayed by the hand±held tester, you can read the value of the switches, sensors,
actuators and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one
method to shorten diagnostic time.
NOTICE:
The values given below for ºNormal Conditionº are representative valu\
es. A vehicle may still be nor-
mal even if its value differs from those listed here. So, do not solely dep\
end on the ºNormal Condi-
tionº here when deciding whether a part is faulty or not.
(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 / DATA LISTº.
(g) According to the display on tester, read the ºDATA LISTº.
Hand±held Tester DisplayMeasurement Item/Range
(Display)Normal Condition *1Diagnostic Note
INJECTOR
Injection period of the No. 1 cylin-
der/
Min.: 0 ms, Max.: 32.64 ms
Idling: 0.40 to 0.78 ms

IGN ADVANCE
Ignition timing advance for No. 1
cylinder/
Min.: ±64 deg., Max.: 63.5 deg.
Idling: BTDC 5 to 23


CALC LOADCalculated load by ECM/
Min.: 0 %, Max.: 100 %
Idling: 21.6 to 31.4 %

Running without load (2,500
rpm): 19.6 to 29.4 %

± 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