Page 4185 of 5135
A76875
ECM
EVP1 34
E13 EFI Relay
1 1 23
Engine Room
J/B No. 4B−W
1MREL 8
E9
Battery FL MAIN B−G2 5
GR
V5
VSV (EVAP)
2
W−G EFI No. 2 1
B−G
W−B
ECW−B
4A
14B 11AEFI
1B−Y
1
2 4
4
44
4
4
B−W Engine Room
R/B No. 1Engine Room R/B No. 4
GR
B−W
EA113IE1 2 Engine Room
J/B No. 1
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−179
AVENSIS Supplement (RM1045E)
DTC P0443 EVAPORATIVE EMISSION CONTROL
SYSTEM PURGE CONTROL VALVE CIRCUIT
CIRCUIT DESCRIPTION
To reduce HC emissions, evaporated fuel from the fuel tank is routed through the charcoal canister to the
intake manifold for combustion in the cylinders.
The ECM changes the duty signal to the VSV for EVAP so that the intake amount of HC emissions is ap-
propriate for the driving conditions (engine load, engine speed, vehicle speed, etc.) after the engine is
warmed up.
DTC No.DTC Detection ConditionTrouble Area
P0443Proper response to ECM command does not occur
SOpen of short in VSV for EVAP circuit
SVSV for EVAP
SECM
WIRING DIAGRAM
05HIM−01
Page 4186 of 5135
A81705
VSV is ONAirVSV is OFF
A76903
EVP1 (+)
ECM Connector
E13
E01 (−)
05 −1 80
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand−held tester . Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1 PERFORM ACTIVE TEST BY HAND −HELD TESTER(VSV FOR EVAP)
(a) Disconnect the vacuum hose from the VSV for EVAP.
(b) Start the engine.
(c) Select the item: DIAGNOSIS / OBD/MOBD / ACTIVE
TEST / EVAP VSV (press the right or left button).
(d) When the VSV for EVAP is operated by the hand −held
tester, check whether the disconnected hose applies suc-
tion to your finger.
Standard:
Tester OperationSpecified Condition
VSV is ONDisconnected hose applies suction to your finger
VSV is OFFDisconnected hose applies no suction to your finger
(e) Reconnect the vacuum hose.
OK CHECK FOR INTERMITTENT PROBLEMS (See Page 05 −7)
NG
2 INSPECT VACUUM SWITCHING VALVE ASSY NO. 1(VSV FOR EVAP)
(See page 12− 3)
NG REPLACE VACUUM SWITCHING VALVE ASSY
NO.1(VSV FOR EVAP)
OK
3 INSPECT ECM(EVP 1VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the specified terminals of
the E13 ECM connector.
Standard:
Tester ConnectionSpecified Condition
EVP1 (E13 −34) −E01 (E13 −7)9to14V
OK CHECK AND REPLACE ECM (See page 10− 65 of
Pub. No. RM 1018E AVENSIS)
NG
Page 4187 of 5135
A81699EVP1
E13
ECM Connector
A51984A52933
Wire Harness Side:
VSV for EVAP Connector
V5
Front View
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−181
AVENSIS Supplement (RM1045E)
4 CHECK HARNESS AND CONNECTOR(ECM−VSV FOR EVAP)
(a) Disconnect the E13 ECM connector.
(b) Disconnect the V5 VSV for EVAP connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
VSV for EVAP (V5−2)−EVP1 (E13−34)Below 1
Standard (Check for short):
Tester ConnectionSpecified Condition
VSV for EVAP (V5−2) or EVP1 (E13−34)−Body ground10 kor higher
(d) Reconnect the ECM connector.
(e) Reconnect the VSV for EVAP connector.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
Page 4188 of 5135
A90210
Engine Room R/B No. 4:EFI No.2 fuse
A66053
Engine Room R/B No. 4:
EFI Relay
A51984A52933
Wire Harness Side:
VSV for EVAP Connector
V5
Front View
05−1 82
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
5 CHECK HARNESS AND CONNECTOR(EFI RELAY − VSV FOR EVAP)
(a) Inspect the EFI No. 2 fuse.
(1) Remove the EFI No. 2 fuse from the engine room R/B No. 4.
(2) Check for continuity in the EFI No. 2 fuse.
Standard: Continuity
(3) Reinstall the EFI No. 2 fuse.
(b) Remove the EFI relay from the engine room R/B No. 4.
(c) Disconnect the V5 VSV for EVAP connector.
(d) Check the resistance between the wire harness side con- nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
Engine room R/B No.4 (EFI relay terminal 3) −
VSV for EVAP (V5 −1)Below 1
Standard (Check for short):
Tester ConnectionSpecified Condition
Engine room R/B No.4 (EFI relay terminal 3) or
VSV for EVAP (V5−1) − Body ground10 k or higher
(e) Reinstall the EFI relay.
(f) Reconnect the VSV for EVAP connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR ECM POWER SOURCE CIRCUIT (See page 05 −236)
Page 4189 of 5135
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−167
AVENSIS Supplement (RM1045E)
DTC P0351IGNITION COIL ”A” PRIMARY/SECONDARY
CIRCUIT
DTC P0352 IGNITION COIL ”B” PRIMARY/SECONDARY
CIRCUIT
DTC P0353 IGNITION COIL ”C” PRIMARY/SECONDARY
CIRCUIT
DTC P0354 IGNITION COIL ”D” PRIMARY/SECONDARY
CIRCUIT
HINT:
SThese DTCs indicate a malfunction related to the primary circuit.
SIf DTC P0351is displayed, check No.1ignition coil with igniter circuit.
SIf DTC P0352 is displayed, check No. 2 ignition coil with igniter circuit.
SIf DTC P0353 is displayed, check No. 3 ignition coil with igniter circuit.
SIf DTC P0354 is displayed, check No. 4 ignition coil with igniter circuit.
CIRCUIT DESCRIPTION
A Direct Ignition System (DIS) is used on this vehicle. The DIS improves the ignition timing accuracy, reduces
high−voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor.
The DIS is a1−cylinder ignition system which ignites one cylinder with one ignition coil. In the1−cylinder
ignition system, the one spark plug is connected to the end of the secondary winding. High voltage generated
in the secondary winding is applied directly to the spark plug. The spark of the spark plug passes from the
center electrode to the ground electrode.
The ECM determines the ignition timing and outputs the ignition signals (IGT) for each cylinder. Using the
ignition (IGT) signal, the ECM turns on and off the power transistor inside the igniter and this switches on
and off the current to the primary coil. When the current flow to the primary coil is cut off, high−voltage is
generated in the secondary coil and this voltage is applied to the spark plugs to spark inside the cylinders.
As the ECM cuts the current to the primary coil, the igniter sends back the ignition confirmation (IGF) signal
for each cylinder ignition to the ECM.
05HIL−01
Page 4190 of 5135
A83838
Crankshaft
Position
Sensor
Camshaft
Position
SensorIGT1
IGF
IGT2
IGT3
IGT4 ECM
No.1Spark Plug
No. 2 Spark Plug
No. 3 Spark Plug
No. 4 Spark Plug IgniterFrom Battery
Ignition Coil
TACH
To Tachometer Other Sensors
(Engine Coolant Sensor,
Air Flow Sensor, Throttle
Position Sensor, etc.)No.2 Ignition
Coil with igniter
No.3 Ignition
Coil with igniter
No.4 Ignition
Coil with igniterNo.1Ignition
Coil with igniter
GND
GND CH1
CH2
A35500
Normal Signal Waveforms 05−168
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E) DTC No.
DTC Detection ConditionTrouble Area
P0351
P0352
P0353
P0354
No IGF signal to ECM while engine is running
SIgnition system
SOpen or short in IGF and IGT circuit between ignition coil with
igniter and ECM (ignition coil circuit1through 4)
SIgnition coil with igniter (ignition coil1through 4)
SIG2 relay
SECM
Reference: Inspection using the oscilloscope.
HINT:
The correct waveforms are as shown on the left.
ItemDetails
TerminalCH1: IGT1, IGT2, IGT3, IGT4−E1
CH2: IGF1−E1
Equipment Setting2 V/Division, 20 ms/Division
ConditionWhile the engine is cranking or idling
Page 4191 of 5135
A76873
8
IGF1 IGT2 IGT1
IGT3 E13
IGT4 I1
Ignition Coil and
Igniter No.1
P R−W
IGNW−R IE4
LG−B
ECR−B
L−YE13
E13
E13
E13 9
1110
24 I2
Ignition Coil and
Igniter No. 2
I3
Ignition Coil and
Igniter No. 3
I4
Ignition Coil and
Igniter No. 4W−R
W−R W−R 3
2
14
1
42
2 3
3
3 1
4
4 1 R−B R−B
R−B R−B R−B B−R
W−B
W−B
W−B
W−B W−B W−B W−B
1
N2
Noise Filter
(Ignition)R−B B−R 1
3 Engine Room R/B No.1
Engine Room J/B No.1
B−G 1A
2
B−G
FL MAIN
Battery Engine Room
J/B No.4I13
Ignition Switch
6
AM2 IG24
(LHD)IP1 1
(RHD)
B−R
1
1
1 1 2
2 AM2IG2
1B−R
BB
51 44
44DH 2
DL 16
IG2
Relay
4A 1
4B 1Engine
Room
R/B No.4
EA1
8R−B
W−B R−BW−B
EF B−R2ECM
W−R
W−R Driver
Side J/B
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−169
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
Page 4192 of 5135
A76903
E1
IGF 1
ECM Connector
E
13
E 11
05 −1 70
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand−held tester . Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1 PERFORM SIMULATION TEST(CHECK DTC)
(a) Read the DTC and check which of the cylinders causes the DTC (see page 05 −1 9) .
(b) Clear the DTC (see page 05 −1 9) .
(c) Swap the ignition coil with igniter of the cylinder that is referred by the DTC for the others.
NOTICE:
Do not swap the ignition coil with igniter connector for the others.
(d) Start the engine.
(e) Read the DTC (see page 05 −1 9) .
Result:
Display (DTC output)Proceed to
P035 1, P0352, P0353, and/or P0354A
Other than shown aboveB
B REPLACE IGNITION COIL ASSY
A
2 INSPECT ECM(IGF 1VOLTAGE)
(a) Disconnect the I 1, I2, I3 or I4 ignition coil connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage between the specified terminals of the E11and E 13 ECM connector.
Standard:
Tester ConnectionSpecified Condition
IGF 1(E 13− 24) −E1 (E 11−1 )4.5 to 5.5 V
(d) Reconnect the ignition coil connector.
NG REPLACE ECM (See page 10 − 65 Pub. No.
RM 1018E AVENSIS)
OK