2005 TOYOTA AVENSIS Service Repair Manual

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Page 3865 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05C66±01
FI0534
A76859
Hand±Held Tester
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±5
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description for Euro±OBD (European spec.)

05C66±01
FI0534
A76859
Hand±Held Tester
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±5
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description for Euro±OBD (European spec.)
When troubleshooting Euro±OBD vehicles, the
only difference from the usual troubleshooting pro-
cedure is that you connect the vehicle to the OBD
scan tool complying with ISO 15031±4 or hand±
held tester, and read the various data output from
the vehicle's ECM.
Euro±OBD regulations require that the vehicle's
on±board computer illuminates the check engine
warning light (CHK ENG) on the instrument panel
when the computer detects a malfunction in the
emission control system / components or in the
powertrain control components which affect ve-
hicle emissions, or a malfunction in the computer. In
addition to an illumination of the CHK ENG when a
malfunction is detected, the applicable Diagnostic
Trouble Codes (DTC) prescribed by ISO 15031±4
are recorded in the engine ECU memory (See page
05±16). If the malfunction does not reoccur in 3 con-
secutive trips, the CHK ENG goes off automatically
but the DTCs remain recorded in the ECM memory.
To check the DTCs, connect the OBD scan tool or
hand±held tester to Data Link Connector 3 (DLC3)
on the vehicle. The OBD scan tool or hand±held
tester also enables you to erase the DTCs and
check freezed frame data and various forms of en-
gine data. (For operating instructions, see the OBD
scan tool's instruction book.)
DTCs include ISO controlled codes and manufac-
turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±16).
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 pend-

Page 3866 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual FI0534
05±6
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
ing fault code is stored in the ECM memory (1st trip).
If the same malfunction is detected again during the
s

Page 3867 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A76859
Hand±Held Tester
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±7
AVENSIS REPAIR MANUAL (RM1018E)
The vehicles on±board computer illuminates the
check engine warning light (CHK ENG) on th

A76859
Hand±Held Tester
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±7
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±16).
When the malfunction does not reoccur, the CHK
ENG is indicated until the ignition switch is turned
off, and then the CHK ENG is not indicated when
the ignition switch is turned on but the DTCs remain
recorded in the ECM memory.
To check the DTCs, connect the hand±held tester
to the Data Link Connector 3 (DLC3) on the vehicle
or read the DTC which is indicated on the multi in-
formation display when TC and CG terminals on the
DLC3 are connected. 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 pend-
ing fault code is 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) (However, the igni-
tion switch must be turned OFF between the 1st trip
and 2nd trip).

Page 3868 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 3 2 1 45678
9 1 0 111 21 31 41 51 6
DLC3
A04550
FI0534
05±8
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
Freeze frame data:
Freeze frame data records the engine condi

3 2 1 45678
9 1 0 111 21 31 41 51 6
DLC3
A04550
FI0534
05±8
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
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.
(c) Check the DLC3.
The vehicle's ECM uses the ISO 9141±2 (Euro±OBD)/
ISO 14230(M±OBD) communication protocol. The termi-
nal arrangement of DLC3 complies with ISO 15031±03
and matches the ISO 9141±2/ ISO 14230 format.
Terminal No.Connection / Voltage or ResidenceCondition
7Bus + Line / Pulse generation+During transmission
4Chassis Ground ± Body Ground / 1 or lessAlways
16Battery Positive ± Body Ground / 9 to 14 VAlways
HINT:
If the display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of the hand±held tester to
the DLC3, turned the ignition switch ON and operated the
hand±held tester, there is a problem on the vehicle side or tool
side.
If communication is normal when the tool is connected to
another vehicle, inspect the DLC3 on the original vehicle.
If communication is still not possible is when the tool is
connected to another vehicle, the problem is probably in
the tool itself, so consult the Service Deparment listed in
the tool's instruction manual.
(d) Inspect the battery voltage.
Battery voltage: 11 to 14 V
If voltage is below 11V, recharge the battery before proceeding.
(e) Check the CHK ENG.
(1) The CHK ENG lamp comes on when the ignition
switch is turned ON and the engine is not running.
HINT:
If the CHK ENG lamp is not illuminated, troubleshoot the com-
bination meter.
(2) When the engine is started, the CHK ENG should
go off. If the lamp remains on, it means that the diag-
nosis system has detected a malfunction or ab-
normality in the system.

Page 3869 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A76859
Hand±Held Tester
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±9
AVENSIS REPAIR MANUAL (RM1018E)
2. DTC CHECK (Nomal Mode) :
NOTICE:
Hand±held tester only:
When the diagnosis system is s

Page 3870 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A76859
Hand±Held Tester
FI3605
ON
OFFBlinking
0.13 Second
05±10
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(3) Connect the hand±held tester to the DLC3.
(4) Turn

Page 3871 of 5135

$TOYOTA AVENSIS 2005 Service Repair Manual ± DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE) 05±11 AVENSIS REPAIR MANUAL (RM1018E) 4.FAIL±SAFE CHART If any of the following codes are recorded, the engine ECM enters the fa\ il±safe mode. DTC No.F$

±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±11
AVENSIS REPAIR MANUAL (RM1018E)
4.FAIL±SAFE CHART
If any of the following codes are recorded, the engine ECM enters the fa\
il±safe mode.
DTC No.Fail±Safe OperationFail±Safe Deactivation Conditions
P0100Ignition timing is fixed at
\b\f
If the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
P0110Intake air temperature is fixed at 20
C (68
F)If the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
P0115Water temperature is fixed at 80

If the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
P0120VTA is fixed at 0
The following condition must be repeated at least 2 times
consecutively when closed throttle position switch is OFF:
VTA greater than 0.1 V and less than 0.95 V
P0135
P0141The heater circuit in which an abnormality is detected is
turned offIgnition switch OFF
P0325Max. timing retardationIgnition switch OFF
P1300
P1305
P1310
P1315
Fuel cutIf the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
P1656It cut electrically the circuit in which an abnormality is de-
tectedIf the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
5.CHECK FOR INTERMITTENT PROBLEMS
Hand±held tester only:
By putting the vehicle's engine ECM in check (test) mode, 1 trip detection logic is possible instead of 2 trip
detection logic, and sensitivity to detect faults is increased. This makes it eas\
ier to detect intermittent prob-
lems.
(a)Clear the DTC. (See step 3.)
(b)Set the check (test) mode. (See step 3.)
(c)Perform a simulation test. (See page 01±32)
(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
of the 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 the measured values are a little different from those listed here. Do\
not decide whether
a part is faulty or not solely according to the ºNormal Conditionº\
here.
(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 LIST / ALLº.
(g) According to the display on tester, read the ºDATA LISTº.

Page 3872 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05±12
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)Hand±held tester display
Measurement Item/Range
(Display)Normal Condition*1Diagnostic Note
FUEL SYS #1
Fuel System B

05±12
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)Hand±held tester display
Measurement Item/Range
(Display)Normal Condition*1Diagnostic Note
FUEL SYS #1
Fuel System Bank 1
OPEN: Air±fuel ratio feedback
stopped
CLOSED: Air±fuel ratio feedback
operating
Idling after warming up: CLOSED
CALC LOAD
Calculator Load:
Current intake air volume as a pro-
portion of max. intake air volumeIdling: 3.3 to 26.7 %
Runnig without load (2,500rpm):
12.0 to 14.7 %

COOLANT TEMPCoolant temperature/
Min.: ±40 C, Max.: 140 CAfter warming up: 80 to 95C (176
to 203If the value is º±40 Cº or
º
140Cºsensor circuit is open or
INTAKE AIRIntake air temperature/
Min.: ±40 C, Max.: 140 CEquivalent to Ambient Temp.
º140 Cº, sensor circuit is open or
shorted.
SHORT FT #1Short±term Fuel Trim Bank 10 20%
LONG FT #1Long±term Fuel Trim Bank 10 20%
MAF/AFMAir flow rate from mass air flow
Meter
Idling: M/T 0.54 to 4.33 gm/sec.
A/T 0.58 to 4.67 gm/sec.
Running without load (2,500 rpm):
3.33 to 9.17 gm/sec.

ENGINE SPDEngine SpeedIdling: 600 to 700 rpm
VEHICLE SPDVehicle SpeedActual vehicle speedSpeed indicated on speedmeter.
IGN ADVANCEIgnition Advance:
Ignition Timing of Cylinder No. 1Idling: BTDC 5 to 15
THROTTLE POS
Voltage Output of Throttle Position
Sensor
Calculated as a percentage:
0 V 0%, 5 V 100%
Throttle Fully Closed: 6 to 16 %
Throttle Fully Open: 64 to 98 %Read the value with ignition switch
ON (Do not start engine)
O2S B1, S1Voltage Output of Heated Oxygen
Sensor Bank 1, Sensor 1Idling: 0.05 to 0.95 V
O2FT B1, S1
Heated Oxygen Sensor Fuel Trim
Bank 1, Sensor 1
(Same as SHORT FT #1)
0 20 %
INJECTORFuel injection time for cylinder
No.1Idling: 1.0 to 3.0 ms
ISC DUTY RATIO
Intake Air Control Valve duty ratio
Opening ratio rotary solenoid type
ISC valve
Idling: 20 to 40 %
STARTER SIGStarter SignalCranking: ON
CTP SWClosed Throttle Position Switch
SignalCranking: ON
A/C SIGA/C Switch SignalA/C ON: ON
STOP LIGHT SW *2Stop Light Switch SignalStop light switch ON: ON
FC IDL
Fuel Cut Idle: Fuel cut when
throttle valve fully closed, during
deceleration
Fuel cut operating: ON
PNP SW/NSW *2Neutral start switch signalP or N position: ON
FC TAUFuel Cut TAU: Fuel cut during very
light loadFuel cut operating: ON
CYL#1, CYL#2, CYL#3, CYL#4Abnormal revolution variation for
each cylinder0 %
FUEL PUMPFuel Pump SignalIdling: ON
EVAP (PURGE) VSVEVAP VSV SignalVSV operation: Above 30 %

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