throttle body TOYOTA SIENNA 2007 Service Workshop Manual

2GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLYEM–49
EM
(b) Install the exhaust manifold sub-assembly RH with
the 6 nuts in the order shown in the illustration.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
21. INSTALL INTAKE MANIFOLD
NOTICE:
DO NOT apply oil to the bolts listed below:
(a) Set a new gasket on each cylinder head.
NOTICE:
• Align the port holes of the gasket and
cylinder head.
• Make sure that the gasket is installed in the
correct direction.
(b) Set the intake manifold on the cylinder heads.
(c) Install and tighten the 6 bolts and 4 nuts uniformly in
several steps.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
22. INSTALL NO. 2 ENGINE MOUNTING STAY RH
(a) Install the No. 2 mounting stay RH with the bolt.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
23. INSTALL IGNITION COIL ASSEMBLY
(a) Install the 6 ignition coil assemblies with the 6 bolts.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
24. INSTALL INTAKE AIR SURGE TANK ASSEMBLY
NOTICE:
DO NOT apply oil to the bolts listed below:
(a) Install a new gasket to the intake air surge tank.
(b) Using a 5 mm hexagon socket wrench, install the 4
bolts and 2 nuts.
Torque: Bolt
18 N*m (184 kgf*cm, 13 ft.*lbf)
Nut
16 N*m (163 kgf*cm, 12 ft.*lbf)
(c) Install the throttle body bracket, No. 1 surge tank
stay and 4 bolts.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
A140781E01
Tightening Parts
Intake Manifold and Cylinder Head Sub-assembly RH
Intake Manifold and Cylinder Head Sub-assembly LH
A134933
A162388
Tightening Parts
Surge Tank and Intake Manifold
No. 1 Surge Tank Stay and Cylinder Head Cover
No. 1 Surge Tank Stay and Surge Tank
Throttle Body Bracket and Cylinder Head Cover
Throttle Body Bracket and Surge Tank
A139209

EM–502GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLY
EM
(d) Connect the connector.
(e) Connect the No. 1 ventilation hose.
(f) Install the clamp and connect the throttle with motor
body assembly connector.
(g) Connect the vapor feed hose.
(h) Connect the 2 water by-pass hoses to the throttle
with motor body assembly.
25. INSTALL VENTILATION HOSE
(a) Using pliers, grip the claws of the 2 clips and slide
the 2 clips to the intake air surge tank assembly and
ventilation valve.
26. INSTALL ENGINE HANGERS
(a) Install the 4 bolts, and 2 engine hangers.
27. REMOVE ENGINE STAND
28. INSTALL DRIVE PLATE AND RING GEAR SUB-
ASSEMBLY (See page EM-13)
29. INSTALL AUTOMATIC TRANSAXLE ASSEMBLY (for
2WD)
HINT:
See page AX-166.
30. INSTALL AUTOMATIC TRANSAXLE ASSEMBLY (for
4WD)
HINT:
(See page AX-167).
31. INSTALL TRANSFER STIFFENER PLATE RH (See
page AX-168)
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A162372
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EM–622GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLY
EM
96. INSTALL FRONT WIPER ARM HEAD CAP
(a) Install the front wiper arm head caps.
97. INSTALL FRONT WHEELS
Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf)
98. ADD ENGINE OIL (See page LU-6)
99. ADD ENGINE COOLANT (See page CO-7)
100. ADD AUTOMATIC TRANSAXLE FLUID
101. CHECK AUTOMATIC TRANSAXLE FLUID (See page
AX-123)
102. ADD POWER STEERING FLUID
103. BLEED POWER STEERING FLUID (See page PS-6)
104. INSPECT FOR FUEL LEAK (See page FU-7)
105. INSPECT FOR ENGINE OIL LEAK
106. INSPECT FOR ENGINE COOLANT LEAK (See page
CO-1)
107. INSPECT FOR EXHAUST GAS LEAK
108. CHECK SHIFT LEVER POSITION (See page AX-127)
109. CHECK AND ADJUST FRONT WHEEL ALIGNMENT
HINT:
(See page SP-4).
110. CHECK IGNITION TIMING (See page EM-1)
111. CHECK ENGINE IDLE SPEED (See page EM-2)
112. CHECK CO/HC (See page EM-4)
113. CHECK FUNCTION OF THROTTLE BODY
ASSEMBLY (See page ES-493)
114. INSTALL FRONT FENDER APRON SEAL RH
(a) Install the front fender apron seal RH with the 2
bolts and clip.
115. INSTALL FRONT FENDER APRON SEAL LH
(a) Install the front fender apron seal LH with the 2 bolts
and clip.
A165364E01
A162371
A162370

EM–42GR-FE ENGINE MECHANICAL – ENGINE
EM
(h) Install the 6 ignition coils.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
(i) Install the intake air surge tank (See page ES-522).
10. INSPECT CO/HC
(a) Start the engine.
(b) Run the engine at 2500 rpm for approximately 180
seconds.
(c) Insert the CO/HC meter testing probe at least 40 cm
(1.3 ft.) into the tailpipe during idling.
(d) Check CO/HC concentration at idle and/or 2500
rpm.
HINT:
Check regulations and restrictions in your area
when performing 2 mode CO/HC concentration
testing (engine check at both idle speed and at 2500
rpm).
If the CO/HC concentration does not comply with
regulations, perform troubleshooting in the order
given below.
(1) Check air fuel ratio sensor and heated oxygen
sensor operation.
(2) See the table below for possible causes, and
then inspect and repair.
CO HC Problems Causes
Normal High Rough idle1. Faulty ignitions:
– Incorrect timing
– Fouled, shorted or improperly gapped plugs
2. Incorrect valve clearance
3. Leaks in intake and exhaust valves
4. Leaks in cylinders
Low HighRough idle
(fluctuating HC reading)1. Vacuum leaks:
– PCV hoses
– Intake manifold
– Throttle body
– Brake booster line
2. Lean mixture causing misfire
High HighRough idle
(black smoke from exhaust)1. Restricted air filter
2. Plugged PCV valve
3. Faulty SFI system:
– Faulty fuel pressure regulator
– Defective ECT sensor
– Defective MAF meter
–Faulty ECM
– Faulty injectors
– Faulty throttle position sensor

EM–382GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLY
EM
(b) Remove the engine hangers.
80. REMOVE VENTILATION HOSE
(a) Using pliers, grip the claws of the 2 clips and slide
the 2 clips to remove the ventilation hose.
81. REMOVE INTAKE AIR SURGE TANK ASSEMBLY
(a) Disconnect the 2 water by-pass hoses from the
throttle with motor body assembly (*1).
(b) Disconnect the vapor feed hose (*2).
(c) Disconnect the throttle with motor body assembly
connector and clamp (*3).
(d) Disconnect the No. 1 ventilation hose.
(e) Disconnect the connector.
(f) Remove the 4 bolts, No. 1 surge tank stay and
throttle body bracket.
(g) Using a 5 mm socket hexagon wrench, remove the
4 bolts.
(h) Remove the 2 nuts and intake air surge tank (*4).
(i) Remove the gasket from the intake air surge tank
(*5).
82. REMOVE IGNITION COIL ASSEMBLY
(a) Remove the 6 bolts and 6 ignition coils.
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A162372
A162264E01
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2GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLYEM–49
EM
(b) Install the exhaust manifold sub-assembly RH with
the 6 nuts in the order shown in the illustration.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
21. INSTALL INTAKE MANIFOLD
NOTICE:
DO NOT apply oil to the bolts listed below:
(a) Set a new gasket on each cylinder head.
NOTICE:
• Align the port holes of the gasket and
cylinder head.
• Make sure that the gasket is installed in the
correct direction.
(b) Set the intake manifold on the cylinder heads.
(c) Install and tighten the 6 bolts and 4 nuts uniformly in
several steps.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
22. INSTALL NO. 2 ENGINE MOUNTING STAY RH
(a) Install the No. 2 mounting stay RH with the bolt.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
23. INSTALL IGNITION COIL ASSEMBLY
(a) Install the 6 ignition coil assemblies with the 6 bolts.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
24. INSTALL INTAKE AIR SURGE TANK ASSEMBLY
NOTICE:
DO NOT apply oil to the bolts listed below:
(a) Install a new gasket to the intake air surge tank.
(b) Using a 5 mm hexagon socket wrench, install the 4
bolts and 2 nuts.
Torque: Bolt
18 N*m (184 kgf*cm, 13 ft.*lbf)
Nut
16 N*m (163 kgf*cm, 12 ft.*lbf)
(c) Install the throttle body bracket, No. 1 surge tank
stay and 4 bolts.
Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)
A140781E01
Tightening Parts
Intake Manifold and Cylinder Head Sub-assembly RH
Intake Manifold and Cylinder Head Sub-assembly LH
A134933
A162388
Tightening Parts
Surge Tank and Intake Manifold
No. 1 Surge Tank Stay and Cylinder Head Cover
No. 1 Surge Tank Stay and Surge Tank
Throttle Body Bracket and Cylinder Head Cover
Throttle Body Bracket and Surge Tank
A139209

EM–502GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLY
EM
(d) Connect the connector.
(e) Connect the No. 1 ventilation hose.
(f) Install the clamp and connect the throttle with motor
body assembly connector.
(g) Connect the vapor feed hose.
(h) Connect the 2 water by-pass hoses to the throttle
with motor body assembly.
25. INSTALL VENTILATION HOSE
(a) Using pliers, grip the claws of the 2 clips and slide
the 2 clips to the intake air surge tank assembly and
ventilation valve.
26. INSTALL ENGINE HANGERS
(a) Install the 4 bolts, and 2 engine hangers.
27. REMOVE ENGINE STAND
28. INSTALL DRIVE PLATE AND RING GEAR SUB-
ASSEMBLY (See page EM-13)
29. INSTALL AUTOMATIC TRANSAXLE ASSEMBLY (for
2WD)
HINT:
See page AX-166.
30. INSTALL AUTOMATIC TRANSAXLE ASSEMBLY (for
4WD)
HINT:
(See page AX-167).
31. INSTALL TRANSFER STIFFENER PLATE RH (See
page AX-168)
A129467
A129464E04
A162372
A129635E01

EM–622GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLY
EM
96. INSTALL FRONT WIPER ARM HEAD CAP
(a) Install the front wiper arm head caps.
97. INSTALL FRONT WHEELS
Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf)
98. ADD ENGINE OIL (See page LU-6)
99. ADD ENGINE COOLANT (See page CO-7)
100. ADD AUTOMATIC TRANSAXLE FLUID
101. CHECK AUTOMATIC TRANSAXLE FLUID (See page
AX-123)
102. ADD POWER STEERING FLUID
103. BLEED POWER STEERING FLUID (See page PS-6)
104. INSPECT FOR FUEL LEAK (See page FU-7)
105. INSPECT FOR ENGINE OIL LEAK
106. INSPECT FOR ENGINE COOLANT LEAK (See page
CO-1)
107. INSPECT FOR EXHAUST GAS LEAK
108. CHECK SHIFT LEVER POSITION (See page AX-127)
109. CHECK AND ADJUST FRONT WHEEL ALIGNMENT
HINT:
(See page SP-4).
110. CHECK IGNITION TIMING (See page EM-1)
111. CHECK ENGINE IDLE SPEED (See page EM-2)
112. CHECK CO/HC (See page EM-4)
113. CHECK FUNCTION OF THROTTLE BODY
ASSEMBLY (See page ES-493)
114. INSTALL FRONT FENDER APRON SEAL RH
(a) Install the front fender apron seal RH with the 2
bolts and clip.
115. INSTALL FRONT FENDER APRON SEAL LH
(a) Install the front fender apron seal LH with the 2 bolts
and clip.
A165364E01
A162371
A162370

FU–142GR-FE FUEL – FUEL INJECTOR
FU
(b) Remove the No. 2 ventilation hose and air cleaner
hose band.
(c) Disconnect the vacuum hose (EVAP) from the air
cleaner hose.
(d) Remove the 2 bolts and air cleaner cap sub-
assembly.
14. REMOVE INTAKE AIR SURGE TANK ASSEMBLY
(a) Disconnect the 2 water by-pass hoses from the
throttle with motor body assembly. (*1)
(b) Disconnect the fuel vapor feed hose assembly.(*2)
(c) Disconnect the throttle with motor body assembly
connector and clamp. (*3)
(d) Disconnect the No. 1 ventilation hose. (*4)
(e) Disconnect the union to check valve hose. (*5)
(f) Disconnect the connector.
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A163204
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2GR-FE FUEL – FUEL INJECTORFU–19
FU
(i) Connect the 6 fuel injector connectors.
2. CONNECT FUEL TUBE SUB-ASSEMBLY
(a) Push in the tube connector onto the pipe until the
tube connector makes a "click" sound.
NOTICE:
• Before connecting the tube, make sure that it
is not damaged. Make sure that there is no
dirt present on the connecting surfaces.
• After connecting, check that the fuel tube
connector and the pipe are securely
connected by pulling on them.
(b) Install the No. 2 fuel pipe clamp.
3. INSTALL INTAKE AIR SURGE TANK ASSEMBLY
NOTICE:
DO NOT apply oil to the bolts listed below:
(a) Install a new gasket to the intake air surge tank
assembly.
(b) Using a 5 mm hexagon socket wrench, install the 4
bolts. (*1)
Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
(c) Install the intake air surge tank assembly with the 2
nuts and 2 bolts. (*2)
Torque: Nut
16 N*m (163 kgf*cm, 12 ft.*lbf)
Bolt
21 N*m (214 kgf*cm, 15 ft.*lbf)
(d) Connect the connector.
A137341
A129477E02
Tightening Parts
Surge Tank and Intake Manifold
No. 1 Surge Tank Stay and Surge Tank
Throttle Body Bracket and Surge Tank
A129468E11
A129467