TOYOTA AVENSIS 2005 Service Repair Manual

A76968
C2
(±) (+)
Camshaft Timing Oil Control Valve
05±178
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
2 CHECK OPERATION OF OCV
(a) Start the engine.
(b) Check the engine speed with conditions (1) and then (2).
(1) Disconnect the camshaft timing oil control valve
connector.
(2) Apply battery positive voltage between the termi-
nals of the camshaft timing oil control valve.
Result:
Proceed toCheck (1)Check (2)
ANormal engine speedRough idle or engine stall
BConditions other than A
B Go to step 4
A
3 READ OUTPUT DTC(CHECK IF DTC OUTPUT RECURS)
(a) Clear the DTC.
(1) Disconnecting the battery terminal or removing the EFI and ECTS fuses for more than 60 sec.
(b) Start and warm up the engine.
(c) Drive the vehicle around for 10 minutes or more.
(d) Read output DTC.
Standard: No DTC output.
HINT:
*: DTCs P0011/59 or P0012/59 is output when a foreign object in engine oil is caught in some part of the
system. These codes will stay registered even if the system returns to normal after a short time. These for-
eign objects are then captured by the oil filter, thus eliminating the source of the problem.
OK VVT SYSTEM OK*
NG

A79111
OCV Signal Waveform1 msec./Division 5 V/
Division
GND
(A)(A) (A)
E13
OC1 +OC1±
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±179
AVENSIS REPAIR MANUAL (RM1018E)
4CHECK ECM(OCV SIGNAL)
(a)Inspection using the oscilloscope.
(b)During idling, check the waveform between the terminals
of the E13 ECM connector.
Standard:
Symbols (Terminal No.)Specified condition
OC1+ (E13±15) ± OC1± (E13±14)Correct waveform is as shown
HINT:
The waveform frequency (A) is lengthened as the engine speed
becomes higher.
NGCHECK AND REPLACE ECM (See page 01±32)
OK
5CHECK OIL CONTROL VALVE FILTER
NGREPLACE OIL CONTROL VALVE FILTER
OK
6CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSY(OCV) (See page 10±20)
OKGo to step 8
NG
7REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY(OCV)
GO
8CHECK CAMSHAFT TIMING GEAR ASSY (See page 14±171)
OK Go to step 10
NG

05±180
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
9REPLACE CAMSHAFT TIMING GEAR ASSY
GO
10CHECK FOR BLOCKAGE(OCV, OIL CHECK VALVE AND OIL HOLE)
NGREPAIR OR REPLACE
OK
11READ OUTPUT DTC(CHECK IF DTC OUTPUT RECURS)
(a)Clear the DTC. (1)Disconnecting the battery terminal or removing the EFI and ECTS fuses for more than 6\
0 sec.
(b)Start and warm up the engine.
(c)Drive the vehicle around for 10 minutes or more.
(d)Read output DTC.
Standard: No DTC output.
HINT:
*: DTCs P0011/59 or P0012/59 is output when a foreign object in engine oil is caught in some part of \
the
system. These codes will stay registered even if the system returns to normal a\
fter a short time. These for-
eign objects are then captured by the oil filter, thus eliminating the source of the problem.
OKVVT SYSTEM OK*
NG
CHECK AND REPLACE ECM (See page 01±32)

05C6M±01
FI0534
A76859
Hand±Held Tester
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±149
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±161). If the malfunction does not reoccur in 3
consecutive trips, the CHK ENG goes off automati-
cally 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±161).

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).

FI0534
05±150
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)

* 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).

Freeze frame data:
Freeze frame data records the engine condition
when a misfire (DTCs P0300 ± P0304) or fuel trim
malfunction (DTCs P0171) 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.
(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 the various data
output from the vehicle's ECM.

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±161).
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.

A76859
Hand±Held Tester
3 2 1 45678
9 1 0 111 21 31 41 51 6
DLC3
A04550
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±151
AVENSIS REPAIR MANUAL (RM1018E)

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).

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 14230(M±OBD) commu-
nication protocol. The terminal arrangement of DLC3
complies with ISO 15031±03 and matches the ISO 14230
format.

FI0534
A76859
Hand±Held Tester
05±152
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E) 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 impossible when the tool is con-
nected 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 ignitionswitch 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 shouldgo off. If the lamp remains on, it means that the diag-
nosis system has detected a malfunction or ab-
normality in the system.
2.DTC CHECK (Nomal Mode) :
NOTICE:
Hand±held tester only:
When the diagnosis system is switched from the normal
mode to the check (test) mode, it erases all DTCs and freeze
frame data recorded in the normal mode. So before switch-
ing modes, always check the DTCs and freeze frame data,
and then write them down.
(a)Checking DTCs using the hand±held tester. (1)Connect the hand±held tester to the DLC3.
(2)Turn the ignition switch ON and switch the hand±held tester main switch ON.
(3)Use the hand±held tester to check the DTCs and freeze frame data and then write them down. The
hand±held tester's instruction book.
(4)See page 05±161 to confirm the details of the DTCs.

3
2
145678
910111213141516
DLC3
A04550
TC
CG
ONON
ONON
OFFOFFOFF
0.25sec.
0.25sec.
FI0294
BR3589
Start
0.5 sec.1.5 sec.4.5 sec.
ON
OFF
One Cycle 0.5 sec.
2.5
sec.
Repeat
4.5 sec.
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±153
AVENSIS REPAIR MANUAL (RM1018E)
(b)If you have no hand±held tester, perform the following
steps (1) to (6).
(1)Turn the ignition switch ON.
(2)Using SST, connect between terminals 13 (TC) and4 (CG) of the DLC3.
SST09843±18040
(3)Read DTC by observing the CHK ENG lamp. If any DTC is not detected, the CHK ENG lamp blinks as
shown in the illustration.
(4)Example If DTC 12 and DTC 31 are detected, the CHK ENG
flashes 1 time (for 0.5 sec) and flashes 2 times after
the 1.5 sec interval, then flashes 3 times after a 2.5
sec interval from the previous DTC and flashes 1
time.
If the interval between the previous DTC and the
next DTC is 4.5 sec, it means the previous DTC is
the last one of the multiple string DTCs. The CHK
ENG lamp repeats the indication of DTCs from the
initial cycle. (Refer to the illustration on the left)
(5)Check the details of the malfunction using the DTC chart on page 05±16.
(6) After completing the check, disconnect terminals 13
(TC) and 4 (CG) and turn off the display.
HINT:
In the event that 2 or more DTCs are detected, the CHK ENG
lamp will indicate the smaller number DTC first.
(c) Clearing the DTCs using the hand±held tester: (1) Connect the hand±held tester to the 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.)
(d) Clearing the DTCs not using the hand±held tester: (1) Disconnect the battery terminal or remove the EFI
fuse for more than 60 seconds.

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:
Compared to the normal mode, the check mode has more sens-
ing ability to detect malfunctions.
Furthermore, the same diagnostic items which are detected in
the normal mode can also be detected in the check (test) mode.
(a) Proceduce for check mode using hand±held tester.
(1) Check the initial conditions

Battery positive voltage 11V or more.

Throttle valve fully closed.

Transmission in the ºPº or ºNº position.

Air conditioning switched OFF.
(2) Turn the ignition switch OFF.
(3) Connect the hand±held tester to the DLC3.
(4) Turn the ignition switch and the hand±held tester
main switch ON.
(5) Switch the hand±held tester from the normal mode
to the check (test) mode. The CHK ENG blinks in
0.13 sec interval as shown in the illustration.
NOTICE:
If the hand±held tester switches the ECM from the normal
mode to the check mode or vice±versa, or if the ignition
switch is turned from ON to ACC or OFF during the check
mode, the DTC and freeze frame data will be erased.
(6) Start the engine. (The CHK ENG lamp goes out af-
ter the engine start.)
(7) Simulate the conditions of the malfunction de-
scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTC, etc.
(8) After simulating the malfunction conditions, use the
hand±held tester diagnosis selector to check the
DTCs and freeze frame data, etc.
HINT:
Be sure not to turn the ignition switch OFF, because the diagno-
sis system is changed from the check mode to the nomal mode
and will result in all of the DTCs and freeze frame data being
erased.
(9) After checking the DTCs, inspect the applicable cir-
cuit.

±
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)