TOYOTA SIENNA 2007 Service Repair Manual

EC–82GR-FE EMISSION CONTROL – CANISTER
EC
REMOVAL
1. REMOVE CHARCOAL CANISTER PROTECTOR
(a) Remove the 6 bolts and charcoal canister protector.
2. REMOVE CHARCOAL CANISTER ASSEMBLY
(a) Disconnect the fuel tank vent hose from the
charcoal canister.
(1) Push the connector deep inside.
(2) Pinch portion A.
(3) Pull out the connector.
(b) Disconnect the charcoal canister filter sub-assembly
from the charcoal canister.
(1) Push the connector deep inside.
(2) Pinch portion A.
(3) Pull out the connector.
(c) Disconnect the vapor pressure sensor connector.
(d) Disconnect the wire harness clamp.
(e) Disconnect the purge line hose from the charcoal
canister.
(f) Remove the 3 bolts and charcoal canister.
INSPECTION
1. INSPECT CHARCOAL CANISTER ASSEMBLY
(a) Visually check the charcoal canister for cracks or
damage.
If cracks or damage are found, replace the charcoal
canister assembly.
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2GR-FE EMISSION CONTROL – CANISTEREC–9
EC
(b) Check charcoal canister operation.
(1) With the purge port closed, blow 1.67 kPa (17.0
gf/cm
2, 0.24 psi) of air into the vent port, and
check that air flows from the air inlet port.
If the result is not as specified, replace the
charcoal canister assembly.
(2) With the vent port closed, blow 1.10 kPa (11.2
gf/cm
2, 0.16 psi) of air to the air inlet port, and
check that air flows from the purge port.
If the result is not as specified, replace the
charcoal canister assembly.
(c) Check for air leakage.
(1) Remove the air hose between ports A and B.
(2) Connect SST (pressure gauge) to the vent port
of the charcoal canister.
SST 09992-00242
(3) While holding port B, with the purge port and
the air inlet port closed and port A open, apply
19.6 kPa (0.2 kgf/cm
2, 2.81 psi) of pressurized
air into the vent port, then confirm that pressure
is retained for 1 minute.
If the result is not as specified, replace the
charcoal canister assembly.
(d) Check the leak detection pump.
(1) Remove the detection pump from the charcoal
canister.
(2) Check that air flows from port A to B and then
C.
If the result is not as specified, replace the
charcoal canister assembly.
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EC–282GR-FE EMISSION CONTROL – AIR FUEL RATIO SENSOR (for 4WD)
EC
5. REMOVE AIR FUEL RATIO SENSOR (for Bank 1
Sensor 1)
(a) Using SST, remove the sensor.
SST 09224-00010
INSPECTION
1. INSPECT AIR FUEL RATIO SENSOR
(a) Measure the resistance of the sensor.
Standard resistance
If the resistance is not as specified, replace the
sensor.
INSTALLATION
1. INSTALL AIR FUEL RATIO SENSOR (for Bank 2
Sensor 1)
(a) Using SST, install the sensor to the exhaust
manifold LH.
SST 09224-00010
Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use
with SST
44 N*m (449 kgf*cm, 32 ft.*lbf) for use
without SST
HINT:
• Use a torque wrench with a fulcrum length of 30
cm (11.81 in.).
• Make sure that SST and wrench are connected
in a straight line.
(b) Connect the sensor connector.
2. INSTALL AIR FUEL RATIO SENSOR (for Bank 1
Sensor 1)
(a) Using SST, install the sensor to the exhaust
manifold RH.
SST 09224-00010
Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use
with SST
44 N*m (449 kgf*cm, 32 ft.*lbf) for use
without SST
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Tester Connection Specified Condition
1 (HT) - 2 (+B) 1.8 to 3.4
at 20C (68F)
1 (HT) - 4 (AF-) 10 k
or higher
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2GR-FE EMISSION CONTROL – AIR FUEL RATIO SENSOR (for 4WD)EC–29
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HINT:
• Use a torque wrench with a fulcrum length of 30
cm (11.81 in.).
• Make sure that SST and wrench are connected
in a straight line.
3. INSTALL EXHAUST MANIFOLD RH
(a) Install the exhaust manifold RH with a new gasket
and 6 nuts.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
(b) Install the exhaust manifold stay with the nut and
bolt.
Torque: 35 N*m (357 kgf*cm, 26 ft.*lbf)
(c) Connect the air fuel ratio sensor (for Bank 1 Sensor
2) connector.
4. INSTALL CENTER EXHAUST PIPE ASSEMBLY
(a) Check compression springs.
(1) Check the compression springs using vernier
calipers.
Specified length:
38.86 mm (1.5299 in.)
HINT:
If the result is not as specified, replace the
compression spring.
(b) Install the gasket.
(1) Install a new gasket by hand onto the front
exhaust pipe assembly.
(2) Using a plastic hammer and wooden block, tap
in the new gasket until its surface is flush with
the front exhaust pipe.
NOTICE:
• Be careful with the installation direction
of the gasket.
• Do not damage the gasket.
• Do not reuse the gasket.
• To ensure a proper seal, do not use the
exhaust pipe to force the gasket on to the
front exhaust pipe.
(c) Install 2 new gaskets to the front exhaust pipe
assembly.
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EC–302GR-FE EMISSION CONTROL – AIR FUEL RATIO SENSOR (for 4WD)
EC
(d) Install the front exhaust pipe assembly with the 2
nuts and 2 bolts.
Torque: Bolt
43 N*m (440 kgf*cm, 32 ft.*lbf)
Nut
62 N*m (632 kgf*cm, 46 ft.*lbf)
(e) Install the center exhaust pipe assembly with the 2
compression springs and 2 bolts.
Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
(f) Attach the clip.
(g) Connect the heated oxygen sensor (for Bank 1
Sensor 2) connector.
5. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
6. INSPECT FOR EXHAUST GAS LEAK
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2GR-FE EMISSION CONTROL – HEATED OXYGEN SENSOR (for 4WD)EC–39
EC
INSPECTION
1. INSPECT HEATED OXYGEN SENSOR (for Bank 1
Sensor 2)
(a) Measure the resistance of the sensor.
Standard resistance
If the resistance is not as specified, replace the
sensor.
2. HEATED OXYGEN SENSOR (for Bank 2 Sensor 2)
(a) Measure the resistance of the sensor.
Standard resistance
If the resistance is not as specified, replace the
sensor.
INSTALLATION
1. INSTALL HEATED OXYGEN SENSOR (for Bank 2
Sensor 2)
(a) Using SST, install the heated oxygen sensor to the
front exhaust pipe.
SST 09224-00010
Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use
with SST
44 N*m (449 kgf*cm, 32 ft.*lbf) for use
without SST
HINT:
• Use a torque wrench with a fulcrum length of 30
cm (11.81 in.).
• Make sure that SST and a wrench are connected
in a straight line.
2. INSTALL FRONT EXHAUST PIPE ASSEMBLY
(a) Install 2 new gaskets to the front exhaust pipe
assembly.
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Tester Connection Specified Condition
1 (HT) - 2 (+B) 11 to 16
at 20C (68F)
1 (HT) - 4 (E1) 10 k
or higher
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Tester Connection Specified Condition
3 (HT) - 2 (+B) 11 to 16
at 20C (68F)
3 (HT) - 4 (E1) 10 k
or higher
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EC–402GR-FE EMISSION CONTROL – HEATED OXYGEN SENSOR (for 4WD)
EC
(b) Install the front exhaust pipe assembly with the 2
bolts and 2 nuts.
Torque: Bolt
43 N*m (440 kgf*cm, 32 ft.*lbf)
Nut
62 N*m (632 kgf*cm, 46 ft.*lbf)
(c) Install the No. 1 exhaust pipe support bracket with 2
new nuts.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
(d) Connect the heated oxygen sensor (for Bank 2
sensor 2) connector.
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2GR-FE EMISSION CONTROL – HEATED OXYGEN SENSOR (for 4WD)EC–41
EC
3. INSTALL HEATED OXYGEN SENSOR (for Bank 1
Sensor 2)
(a) Using SST, install the heated oxygen sensor.
SST 09224-00010
Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use
with SST
44 N*m (449 kgf*cm, 32 ft.*lbf) for use
without SST
(b) Connect the heated oxygen sensor (for Bank 1
Sensor 2) connector.
HINT:
• Use a torque wrench with a fulcrum length of 30
cm (11.81 in.).
• Make sure that SST and a wrench are connected
in a straight line.
4. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
5. INSPECT FOR EXHAUST GAS LEAK
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EC–142GR-FE EMISSION CONTROL – VENTILATION VALVE
EC
ENGINE
2GR-FE EMISSION CONTROL
VENTILATION VALVE
COMPONENTS
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2GR-FE EMISSION CONTROL – VENTILATION VALVEEC–15
EC
REMOVAL
1. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
2. DISCONNECT VENTILATION HOSE
(a) Disconnect the ventilation hose from the ventilation
valve.
3. REMOVE VENTILATION VALVE
(a) Remove the ventilation valve.
INSPECTION
1. INSPECT VENTILATION VALVE
(a) Install a clean hose to the ventilation valve.
(b) Check the ventilation valve operation.
(1) Blow air into the cylinder head side, and check
that air passes through easily.
NOTICE:
Do not suck air through the valve.
Petroleum substances inside the valve are
hazardous to your health.
(2) Blow air into the intake manifold side, and
check that air passes through with difficulty.
If the result is not as specified, replace the
ventilation valve.
(c) Remove the clean hose from the ventilation valve.
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