2005 TOYOTA AVENSIS Service Repair Manual

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TOYOTA AVENSIS 2005 Service Repair Manual A76859
Hand±Held Tester
FI3605
ON
OFFBlinking
0.13 Second
05±154
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
3. DTC CHECK (Check Mode):
HINT:
Hand±held tester only:
Compare

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TOYOTA AVENSIS 2005 Service Repair Manual ±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±155
AVENSIS REPAIR MANUAL (RM1018E)
(b)Clearing the DTCs using the hand±held tester
(1)Connect the hand±held tester to DLC3.
(2)Turn the ignition switch ON.

±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±155
AVENSIS REPAIR MANUAL (RM1018E)
(b)Clearing the DTCs using the hand±held tester
(1)Connect the hand±held tester to DLC3.
(2)Turn the ignition switch ON.
(3)When operating hand±held tester to erase thecodes, the DTCs and freeze frame data will be
erased. (See the hand±held tester's instruction
book for operating instructions.)
(c)Clearing the DTCs not using the hand±held tester: (1)Disconnecting the battery terminal or remove theEFI fuse for more than 60 seconds.
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
P0031/21
P0032/21
P0051/28
P0052/28
The heater circuit in which the abnormality is detected is
turned offIgnition switch OFF
P0100/31
P0102/31
P0103/31Ignition timing is calculated from engine speed and a throttle
angleIf the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
P0110/24
P0112/24
P0113/24
Intake air temp. is fixed at 20 C (68 F)If the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
P0115/22
P0117/22
P0118/22
Engine coolant temp. is fixed at 80 \bIf the ECM detects ºPassº condition, the ECM will return to
ºNomal modeº.
P0120/41
P0122/41
P0123/41
Fuel cut intermittently while idlingReturned to normal condition and ignition switch OFF
P0325/52
P0327/52
P0328/52
Max. timing retardationIgnition switch OFF
P0351/14
P0352/15
P0353/14
P0354/15
Fuel cutIf 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±22)
(d)Check the connector and terminal. (See page 01±32)
(e)Wiggle the harness and the connector. (See page 01±32)

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TOYOTA AVENSIS 2005 Service Repair Manual 05±156
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
6. DATA LIST
HINT:
Using the DATA LIST displayed by the hand±held tester, you can read the value of the switches, sensors,

05±156
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
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 values. 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.
Hand±held Tester DisplayMeasurement Item/Range
(Display)Normal ConditionDiagnostic Note
INJECTORInjection period/
Min.: 0 ms, Max.: 32.64 msIdling: 1.92 to 3.37 ms
IGN ADVANCEIgnition timing advance/
Min.: ±64 deg., Max.: 63.5 deg.Idling: BTDC 5 to 15 deg.
CALC LOADCalculated load by engine ECM/
Min.: 0 %, Max.: 100 %
Idling: 3.3 to 26.7 %
Running without load (2,500
rpm):
12.0 to 14.7 %

MAFAir flow rate from MAF sensor/
Min.: 0 gm/s, Max.: 655 gm/s
Idling:
M/T 0.54 to 4.33 gm/sec.
A/T 0.58 to 4.67 gm/sec.
Runnning without load (2,500
rpm):
3.33 to 9.17 gm/sec.

ENGINE SPDEngine Speed/
Min.: 0 rpm, Max.: 16,383 rpmIdling:
M/T 650 to rpm
A/T 550 to rpm

COOLANT TEMPCoolant temperature/
Min.: ±40 C, Max.: 140 CAfter warming up:
80 to 95C (176 to 203If the value is º±40 Cº or º140
Cº i it i
INTAKE AIRIntake air temperature/
Min.: ±40 C, Max.: 140 CEquivalent to ambient temp.
Cº, sensor circuit is open or
shorted.
THROTTLE POSAbsolute throttle position sensor/
Min.: 0 %, Max.: 100 %Throttle fully closed: 6 to 16 %
Throttle fully open: 64 to 98 %Read the value with ignition switch
ON (Do not start engine)
CTP SWClosed throttle position switch/
ON or OFFThrottle fully closed: ON
Throttle open: OFF
VEHICLE SPDVehicle speed/
Min.: 0 km/h, Max.: 255 km/hVehicle stopped: 0 km/h (0 mph)
O2S B1 S2
Oxygen sensor output voltage of
the bank 1 sensor 2/
Min.: 0 V, Max.: 1.275 V
Idling: 0.1 to 0.9 V
AFS B1 S1
A/F sensor output voltage of the
bank 1 sensor 1/
Min.: 0 V, Max.: 7.999 V
Idling: 2.8 to 3.8 V

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TOYOTA AVENSIS 2005 Service Repair Manual ± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±157
AVENSIS REPAIR MANUAL (RM1018E)SHORT FT #1
Short term fuel trim of bank 1/
Min.: ±100 %, Max.: 100%0 20 %
LONG FT #1Long term fuel trim of bank 1/
Min.:

± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±157
AVENSIS REPAIR MANUAL (RM1018E)SHORT FT #1
Short term fuel trim of bank 1/
Min.: ±100 %, Max.: 100%0 20 %
LONG FT #1Long term fuel trim of bank 1/
Min.: ±100 %, Max.: 100 %0 20 %
TOTAL FT #1Total fuel trim of bank 1/
Min.: 0.5, Max.: 1.496Idling: 0.5 to 1.4
TOTAL FT #2Total fuel trim of bank 2/
Min.: 0.5, Max.: 1.496Idling: 0.5 to 1.4
AF FT B1 S1
Short term fuel trim associated
with the bank 1, sensor 1/
Min.: 0, Max.: 1.999Lean: 0 < 1
Stoichiometric Air±Fuel Ratio = 1
Rich: 1 < 1.999

FUEL SYS #1
Fuel system status (Bank1) /
OL or CL or OLDRIVE or
OLFAULT or CLFAULT
Idling after warming up: CL
OL: Open Loop±has not yet sa-
tisfied conditions to go closed
loop.
CL: Closed Loop±using oxygen
sensor(s) as feed back for fuel
control.
OL DRIVE: Open loop due to
driving conditions. (power enrich-
ment, deceleration enleanment)
OL FAULT: Open loop due to de-
tected system fault.
CL FAULT: Closed loop, but fault
with at least one oxygen sensor
may be using single oxygen sen-
sor for fuel control.
FC IDLIdle fuel cut /
ON or OFFFuel cut operation: ON
CHK ENGCHK ENG status /
ON or OFFCHK ENG ON: ON
STARTER SIGStarter signal /
ON or OFFCranking: ON
A/C SIGA/C signal /
ON or OFFA/C ON: ON
PNP SW [NSW]Neutral position switch signal /
ON or OFFP or N position: ON
ELECT LOAD SIGElectrical load signal /
ON or OFFDefogger switch ON: ON
STOP LIGHT SWStop light switch /
ON or OFFBrake pedal depressed: ON
Brake pedal released: OFF
PS OIL PRESS SWPower steering signal /
ON or OFFSteering position is;
center: OFF
Except center:ON

PS SIGNALPower steering signal/
ON or OFFAfter engine start: OFF
After steer the steering: ON
FUEL PUMP / SPDFuel pump / speed status /
ON/H or OFF/M,LIdling: ON
EVAP VSVVSV status for EVAP control /
ON or OFFVSV operating: ON
VVT CTRL B1VVT control status / ON or OFFVVT system operation: ON
IGNITIONIgnition counter/
Min.: 0, Max.: 4000 to 400
CYL #1, #2, #3, #4Misfire ratio of the cylinder 1/
Min.: 0 %, Max.: 50 %0 %

Page 3893 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05±158
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)THROTTLE POS
Throttle position sensor output
voltage/
Min.: 0 V, Max.: 5 VThrottle fully closed: 0.3 to 0.8 V
Throttle fu

05±158
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)THROTTLE POS
Throttle position sensor output
voltage/
Min.: 0 V, Max.: 5 VThrottle fully closed: 0.3 to 0.8 V
Throttle fully open: 3.2 to 4.9 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 1.0 VRead the value with ignition switch
ON (Do not start engine)
If no conditions are specifically stated for ºldlingº, it means the shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.
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 of the meth-
od 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: 3000 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 % 25 % (Change the injection volume ±12.5 % or 25 %.)
[Vehicle Condition]
Engine speed: 3000 rpm or less.
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.
To display the graph indication, se-
lect O2S B1 S1 or A/F B1S1 and
press button º4º after selecting
ºACTIVE TEST/A/F CONTROL/
USER DATAº.
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]
Activate the VVT system.
ON or OFFON: 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

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$TOYOTA AVENSIS 2005 Service Repair Manual ± DIAGNOSTICS SFI SYSTEM(1AZ±FE) 05±159 AVENSIS REPAIR MANUAL (RM1018E) BASIC INSPECTION When the malfunction is not confirmed in the DTC check, troubleshooting \ should be carried out in all the$

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TOYOTA AVENSIS 2005 Service Repair Manual 05±160
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
6CHECK FUEL PRESSURE (See page 11±19)
NGPROCEED TO PAGE 11±15 AND CONTINUE TO TROUBLESHOOT
OK
7CHECK FOR SPARK (See page

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TOYOTA AVENSIS 2005 Service Repair Manual 05±122
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP1656OCV CIRCUIT MALFUNCTION (BANK 1)
CIRCUIT DESCRIPTION
Refer to DTC P1349 on page 05±112.
DTC No.DTC Detecti

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