2005 TOYOTA AVENSIS diagnostic

A63991
ECM
C2
Camshaft Timing
Oil Control Valve
2
1
Y±B
W±G
OCV+
OCV±
15
14
E13
E13
05±112
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP1349VVT SYSTEM MALFUNCTION (BANK 1)
CIRCUIT DESCRIPTION
VVT system controls the intake valve timing to proper timing in response to\
driving condition.
The ECM controls the oil control valve (OCV) to make the intake valve timing properly, oil pressure regulated
by the OCV is supplied to the valiable valve timing (VVT) controller, and then the VVT controller changes
relative position between the camshaft and the crankshaft.
DTC No.DTC Detecting ConditionTrouble Area
P1349
Condition (a) or (b) continues with engine speed at 400 to
4,000 rpm after the engine is warmed up
(a)Valve timing does not change from the current valve timing
(b)Current valve timing is fixed
Valve timing

OCV

VVT controller assembly

ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f \b\f\f
 Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1CHECK VALVE TIMING (See page 14±49)
NGADJUST VALVE TIMING(See page 14±49)
OK
05C6F±01

A18294
OCV+OCV±
ECM Connector
E13
A58701A58701
OCV Signal Waveform1 m sec./Division 5 V/
Division
GND
(A)(A)(A)
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±113
AVENSIS REPAIR MANUAL (RM1018E)
2PERFORM ACTIVE TEST BY HAND±HELD TESTER(OPERATE OF OCV)
(a)Start the engine and warm it up.
(b)Connect the hand±held tester and select VVT from the ACTIVE TEST menu\
.
(c)Check the engine speed while operating the OCV by the hand±held teste\
r.
OCV is OFF: Normal engine speed
OCV is ON: Rough idle or engine stall
HINT:
DTC P1349 is also output when a foreign object is detected in some parts\
of the system in engine oil, and
then the system returns to normal in a short time. There is also no problem \
on the VVT as the oil filter should
catch the foreign object in engine oil.
OKVVT SYSTEM OK
NG
3INSPECT ECM(CHECK VOLTAGE)
(a)Turn the ignition switch ON.
(b)Check the waveform between terminals OCV+ and OCV± of the E13 ECM connector.
HINT:

The correct waveform is as shown on the left.

The waveform frequency (A) becomes longer as the en-
gine speed becomes higher.
NGCHECK AND REPLACE ECM (See page 01±32)
OK
4INSPECT CAMSHAFT TIMING GEAR ASSY (See page14±64)
NG REPLACE VVT CONTROLLER ASSEMBLY, AND THEN GO TO NEXT STEP
OK

05±114
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
5INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY (See page 10±3)
NGREPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY, AND THEN GO TO NEXT
STEP
OK
6CHECK OIL CONTROL VALVE FILTER(CHECK BLOCKAGE)
NGREPAIR OR REPLACE OIL CONTROL VALVE FILTER
OK
7PERFORM SIMULATION TEST(DTC CHECK)
(a)Clear the DTC (See page 05±5).
(b)Perform the simulation test.
(c)Check whether or not DTC P1349 is stored (See page 05±5). Result:
DTCProceed to
ºP1349º is output.A
ºP1349º is not output.B
HINT:
DTC P1349 is also output when a foreign object is detected in some parts\
of the system in engine oil, and
then the system returns to normal in a short time. There is also no problem \
on the VVT as the oil filter should
catch the foreign object in the engine oil.
BVVT SYSTEM OK
A
CHECK AND REPLACE ECM (See page 01±32)

± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±103
AVENSIS REPAIR MANUAL (RM1018E)
DTC P1300 IGNITER CIRCUIT MALFUNCTION (NO.1)
DTC P1305 IGNITER CIRCUIT MALFUNCTION (NO.2)
DTC P1310 IGNITER CIRCUIT MALFUNCTION (NO.3)
DTC P1315 IGNITER CIRCUIT MALFUNCTION (NO.4)
CIRCUIT DESCRIPTION
HINT:

If DTC P1300 is displayed, check No.1 ignition coil with igniter circuit.

If DTC P1305 is displayed, check No.2 ignition coil with igniter circuit.

If DTC P1310 is displayed, check No.3 ignition coil with igniter circuit.

If DTC P1315 is displayed, check No.4 ignition coil with igniter circuit.
A Direct Ignition System (DIS) has been adopted. The DIS improves the ignition timing accuracy, reduces
the high±voltage loss, and enhances overall reliability of the ignition system by eliminating the distributor.
The DIS is a 1±cylinder ignition system which ignites one cylinder with one ignition coil. In the 1±cylinder
ignition system, the spark plug is connected to the end of the secondary coil. High voltage generated in the
secondary coil is applied directly to the spark plug. The spark of the spark plug passes through from the cen-
ter electrode to the ground electrode.
The ECM determines ignition timing and outputs the ignition (IGT) signals of each cylinder. Based on IGT
signals, the power transistors cut off the current to the primary coil in the ignition coil. At the same time, the
igniter also sends an ignition confirmation (IGF) signal as a fail±safe measurement to the ECM.
05C6E±01

A73818
Crankshaft
Position
Sensor
Camshaft
Position
Sensor
Various
SensorIGT1
IGF
IGT2
IGT3
IGT4 ECM
No. 1 Spark Plug
No. 2 Spark Plug
No. 3 Spark Plug
No. 4 Spark Plug Ignition Coil
Assy No. 1 IgniterFrom Battery
Ignition Coil
Ignition Coil
Assy No. 2
Ignition Coil
Assy No. 3
Ignition Coil
Assy No. 4
TA C
To Tachometer 05±104
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)DTC No.
DTC Detecting ConditionTrouble Area
P1300
P1305
P1310
P1315
No IGF signal to the ECM while engine is running

Ignition system

Open or short in IGF or IGT1 circuit from No. 1 ignition coil
with igniter to ECM

No.1 ± No.4 ignition coil with igniter

ECM


A79093
ECM
EH W±B E13
IGT1
IGF
E13
E13
E13
E13 23 IGT2
IGT3
IGT4
8
10
11
R±W
3
2
1
I1
Ignition Coil and
Igniter No.1
I2
Ignition Coil and
Igniter No.2
I3
Ignition Coil and
Igniter No.3
I4
Ignition Coil and
Igniter No.4
R±B
W±B 4 3
2
B±R
1
1
1
B±R
R±B
33
2
2
L±YW±R
W±R W±R
4 4 4
W±B
W±B
W±B
W±B
R±B
W±R
R±B R±B
From Terminal 3
of IG2 Relay
(See Page 05±124)
W±B LG±B
P
W±R
W±R
W±R 9
R±B 1N2
Noise
Filter R±B
8 EA1
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±105
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

A18294
IGT4IGT3IGT2IGT1
ECM Connector
E1
E13E12
IGF
A63956
CH1
(IGT1 ± 4)
CH2
(IGF1)
GND
GND
05±106
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f \b\f\f
 Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1PERFORM SIMULATION TEST
(a)Clear the DTC (See page 05±5)
(b)Shuffle arrangement of the ighition coil and igniters.
NOTICE:
Do not shuffle the connectors.
(c)Perform the simulation test.
(d)Clear the DTC (See page 05±5) Result:
Display (DTC output)Proceed to
The same DTC is output againA
The other DTC is outputB
BREPLACE IGNITION COIL
A
2INSPECT ECM(IGT1, IGT2, IGT3, IGT4 AND IGF SIGNAL)
(a)Inspection using the oscilloscope.
(b)During cranking or idling, check the waveform between terminals IGT1 to IGT4 and E1, and IGF1 and E1 of the
ECM connector.
Standard:
ItemContents
TerminalCH1: IGT1, IGT2, IGT3, IGT4 ± E1
CH2: IGF ± E1
Equipment Set2V/DIV, 20ms/DIV
ConditionWhile the engine is cranking or idling
HINT:
Correct waveform is as shown in the diagram on the left.
NGCHECK AND REPLACE ECM (See page 01±32)
OK

A54393
+B (+) GND (±)
Ignition Coil and Igniter Connector Wire Harness Side
I1
I2I3I4
A65743
E13
ECM Connector
IGT4IGT3
IGT2IGT1
IGF
A54393
IGT Wire Harness Side
Ignition Coil and Igniter ConnectorIGF I1
I2I3I4
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±107
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT IGNITION COIL(POWER SOURCE)
(a) Disconnect the ignition coil and igniter connector.
(b) Check for continuity between the wire harness side con-
nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
GND (I1±4) ± Body ground
GND (I2±4) ± Body groundContinuityGND (I3±4) ± Body groundContinuity
GND (I4±4) ± Body ground
(c) Turn the ignition switch ON.
(d) Measure the voltage between the terminals of the ignition
coil and igniter connector.
Standard:
Symbols (Terminal No.)Specified condition
+B (I1±1) ± GND (4)
+B (I2±1) ± GND (4)9to14V+B (I3±1) ± GND (4)9 to 14 V
+B (I4±1) ± GND (4)
NG Go to step 5
OK
4 CHECK HARNESS AND CONNECTOR(ECM ± IGNITION COIL)
HINT:
The procedure below is for No.1 cylinder. If a malfunction is
found on other cylinders, check the circuit for the cylinder with
referring to this procedure.
(a) Disconnect the ignition coil and igniter connector.
(b) Disconnect the E13 ECM connector.
(c) Check for continuity between the wire harness side con-
nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
IGT (I1±3) ± IGT1 (E13±8)
IGT (I2±3) ± IGT2 (E13±9)
IGT (I3±3) ± IGT3 (E13±10)
IGT (I4±3) ± IGT4 (E13±11)ContinuityIGF (I1±2) ± IGF (E13±23)Continuity
IGF (I2±2) ± IGF (E13±23)
IGF (I3±2) ± IGF (E13±23)
IGF (I4±2) ± IGF (E13±23)