TOYOTA AVENSIS 2003 Service Repair Manual

B11449
12±12
±
EMISSION CONTROL EMISSION CONTROL SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
4. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS
(a) Check for cracks, leaks or damage.
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1203V±03
B08075
12±16
±
EMISSION CONTROL EMISSION CONTROL SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
EMISSION CONTROL SYSTEM (1CD±FTV)
ON±VEHICLE INSPECTION
1. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS
(a) Check for cracks, leak or damage.
HINT:
Separation of the engine oil dipstick, oil filler cap, PCV hose,
etc. may cause the engine to run improperly. Disconnection,
looseness or cracks in the parts of the air induction system be-
tween the throttle body and cylinder head will allow air suction
and cause the engine to run improperly.
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1209D±02
A62250
Port APort BPort C
A77115
Ohmmeter
Resistance
A77116
Ohmmeter
No continuity
A77117
Air
E
F
±
EMISSION CONTROL EMISSION CONTROL SYSTEM (1ZZ±FE/3ZZ±FE)
12±3
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. INSPECT CHARCOAL CANISTER ASSY
(a) Inspect charcoal canister operation.
(1) Check the charcoal canister operation according tothe table below.
SST 09992±00242
Inspection:
Checking methodResult
Close ports B and C, then apply vacuum
to port ANo leaks
Close port C, then apply vacuum to port
AAir flows from port B
Close port C, then blow air into port AAir flows from port B
Blow air into port AAir flows from ports B and C
2. INSPECT VACUUM SWITCHING VALVE ASSY NO.1
(a) Inspect VSV for open circuit. (1) Using an ohmmeter, measure resistance betweenthe terminals.
Resistance: 26 to 30
at 20
C (68
F)
If the resistance is not as specified, replace the VSV.
(b) Inspect the VSV for ground. (1) Using an ohmmeter, check that there is no continu-ity between each terminal and the body.
If there is continuity, replace the VSV.
(c) Inspect the VSV operation.
(1) Check that air flows with a little difficulty from port Eto port F.
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A77118
Air
E
F
Battery
A60562
Cylinder Head Side
A60563
Intake Manifold Side
A64543
+B
Bank 1 Sensor 1: HT1A
E1
A77126
HT
+B
Bank 1 Sensor 2:
E1
12±4
±
EMISSION CONTROL EMISSION CONTROL SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(2) Apply battery voltage across the terminals.
(3) Check that air flows from port E to port F.
If operation is not as specified, replace the VSV.
3. INSPECT VENTILATION VALVE SUB±ASSY
(a) Blow air into the cylinder head side, and check that air
passes through easily.
CAUTION:
Do not suck air through the valve. If contains petroleum
substances and is harmful.
(b) Blow air into the intake manifold side, and check that air passes through with difficulty.
HINT:
If operation is not as specified, replace the PCV valve.
4. IINSPECT HEATED OXYGEN SENSOR
(a) Bank 1 Sensor 1: (1) Using an ohmmeter, measure the resistance be-tween the terminals.
Resistance:
Terminal No.Resistance
1 (HT1A) ± 2 (+B)5 to 10
at 20
C (68
F)
1 (HT1A) ± 4 (E1)No Continuity
If the resistance is not as specified, replace the sensor.
(b) Bank 1 Sensor 2:
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Resistance:
Terminal No.Resistance
1 (HT) ± 2 (+B)11 to 16
at 20
C (68
F)
1 (HT) ± 4 (E1)No Continuity
If the resistance is not as specified, replace the sensor.
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B04812
Gasket
±
EMISSION CONTROL EMISSION CONTROL SYSTEM (1ZZ±FE/3ZZ±FE)
12±5
AVENSIS REPAIR MANUAL (RM1018E)
5. INSPECT FUEL TANK CAP ASSY
(a) Visually check if the cap or gasket is deformed or dam-
aged.
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1209C±02
A65749
E1OX1AOX1B
ECM
A66059
±
EMISSION CONTROL EMISSION CONTROL SYSTEM (1ZZ±FE/3ZZ±FE)
12±1
AVENSIS REPAIR MANUAL (RM1018E)
EMISSION CONTROL SYSTEM (1ZZ±FE/3ZZ±FE)
ON±VEHICLE INSPECTION
1. INSPECT AIR±FUEL RATIO COMPENSATION SYS-
TEM
HINT:
You can also check the system by choosing ºDATA MONITOR/
O
2 SENSOR OUTPUT VOLTAGEº on the monitor of the hand±
held tester.
(a) Connect the hand±held tester to the terminals 21 (OX1B) and 7 (E1) and to terminals 23 (OX1A) and 7 (E1) of the
ECM.
CAUTION:
Connect test leads from the back side of the connector with
the ECM connected.
(b) Warm up the heated oxygen sensor with the engine speed at 2,500 rpm for approximately 2 minutes.
(c) Confirm that the voltage varies output between 0V to 1V with the engine speed at 2,500 rpm.
OK:
The voltage output varies more than 8 times in 10 se-
conds.
CAUTION:

Perform the check immediately after the warming up.

If the voltage variation could not be verified, warm up
the heated oxygen sensor again.
2. INSPECT FUEL CUT OFF RPM
(a) Increase the engine speed to at least 3,500 rpm.
(b) Use a sound scope to check for injector operating sounds.
(c) Check that injector operating sounds stops momentarily and then resumes when \
the throttle lever is released.
3. INSPECT EVAPORATIVE EMISSION CONTROL SYS-TEM
(a) After starting the engine, disconnect the vacuum hose
shown in the illustration.
(b) Check if vacuum occurs at the VSV port when choosing ºACTIVE TESTº and ºPURGE VSVº according to the dis-
play on hand±held tester.
(c) Finish ºACTIVE TESTº, then reconnect the vacuum.
(d) After entering to ºECU DATA MONITORº on the hand±
held tester, choose ºPURGE VSVº to check the operation
of the purge VSV.
(e) After driving the vehicle with a warm engine, confirm that
the VSV turns from off to on.
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A62836
1ZZ±FE3ZZ±FE
12±2
±
EMISSION CONTROL EMISSION CONTROL SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
4. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS
(a) Check for cracks, leaks or damage.
HINT:
Separation of the engine oil dipstick, oil filler cap, PCV hose,
etc. may cause the engine to run improperly. Disconnection,
looseness or cracks in the parts of the air induction system be-
tween the throttle body and cylinder head will allow air suction
and cause the engine to run improperly.
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1306S±02
A79032
Filter
AB
A59586
13±2
±
INTAKE INTAKE AIR CONTROL SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. INSPECT INTAKE AIR CONTROL VALVE ASSY
(a) With 34.7 kPa (260 mm Hg, 10.2 in. Hg) of vacuum ap- plied to the actuator, check that the actuator rod moves.
(b) One minute after applying the vacuum, check that the ac- tuator rod does not return.
(c) If the operation is not as specified, replace the intake air control valve assembly.
NOTICE:
Do not touch the adjust screw.
2. INSPECT VACUUM SWITCHING VALVE ASSY NO.1
(a) Using an ohmmeter, measure resistance between each terminal.
Resistance: 33 to 39
at 20
C (68
F)
(b) Check that air flows form port B to the filter.
(c) Apply battery voltage across the terminals.
(d) Check that air flows from port B to port A.
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1302G±03
A77131
Vacuum Gage
35.7 3700
100
Throttle Valve Open Position


Engine Speed [r/min.]
ON
OFF
A59594
SCV VSV
±
INTAKE INTAKE AIR CONTROL SYSTEM (1AZ±FSE)
13±1
AVENSIS REPAIR MANUAL (RM1018E)
INTAKE AIR CONTROL SYSTEM (1AZ±FSE)
ON±VEHICLE INSPECTION
1. INSPECT INTAKE AIR CONTROL SYSTEM
(a) Using a 3±way connector, connect vacuum gauge to the
actuator hose.
(b) Connect the hand±held tester to the DLC 3.
(c) Start the engine.
(d) Select the active test mode according to the message on the hand±held tester.
Vacuum:
VSV ONApprox. 27 kPa (200 mm Hg, 7.9 in. Hg)
VSV OFF0 kPa (0 mm Hg, 0 in. Hg.)
(e) Shift the transmission into the P range and control the ac-
celerator pedal.
(f) Check the VSV operation using the hang±held tester.
HINT:
The value in the illustration is only for reference; the throttle
valve may operate diversely depend on the engine running
condition.
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13070±01
A79168
A80112
A80113
A64328
2 to 7 mm0 to 5 mm
13±18
±
INTAKEINTERCOOLER ASSY(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
INTERCOOLER ASSY(1CD±FTV)
REPLACEMENT
1.REMOVE FRONT BUMPER COVER (See page 76±3) 2. REMOVE INTERCOOLER COOLING AIR DUCTSUB±ASSY
(a) Remove the 2 bolts and the cooling air duct.
3. REMOVE INTERCOOLER ASSY
(a) Disconnect the vacuum hose, the air hose No. 2 and No. 3 from the intercooler.
(b) Remove the 3 bolts and nut, and then detach the inter- cooler assy.
4. INSTALL INTERCOOLER ASSY
(a) Install the intercooler assembly with the 3 bolts and a new nut.
Torque: 7.0 N
m (71 kgf
cm, 62 in.
lbf)
(b) Install the air hose and hose clamps as shown in the il- lustration.
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