engine TOYOTA SIENNA 2007 Service Repair Manual

CO–62GR-FE COOLING – COOLANT
CO
COOLANT
REPLACEMENT
1. REMOVE NO. 1 ENGINE UNDER COVER (See page
EM-26)
2. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
3. DRAIN ENGINE COOLANT
(a) Loosen the radiator drain cock plug.
HINT:
Collect the coolant in a container and dispose of it
according to the regulations in your area.
(b) Remove the radiator cap sub-assembly from the
radiator assembly.
NOTICE:
Do not remove the radiator cap sub-assembly
while the engine and radiator are still hot.
Pressurized, hot engine coolant and steam may
be released and cause serious burns.
(c) Loosen the 2 cylinder block drain cock plugs.
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2GR-FE COOLING – COOLANTCO–7
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4. ADD ENGINE COOLANT
(a) Tighten the radiator drain cock plug by hand.
(b) Tighten the 2 cylinder block drain cock plugs.
Torque: 13 N*m (130 kgf*cm, 9 ft.*lbf) for
cylinder block drain cock plugs
(c) Remove the air drain cock plug from the water inlet
housing.
(d) Loosen the air drain plug at the top of the radiator 3
or 4 turns.
(e) Add TOYOTA Super Long Life Coolant (SLLC) to
the radiator inlet opening until coolant overflows
from the engine air drain cock hole. Then install the
air drain cock plug to the water inlet housing.
Torque: 13 N*m (130 kgf*cm, 9 ft.*lbf) for air
drain cock plug
(f) Continue to add TOYOTA Super Long Life Coolant
(SLLC) to the radiator inlet opening until coolant
overflows from the radiator air drain hole. Then
close the air drain plug at the top of the radiator.
HINT:
If the coolant level at the radiator inlet opening
drops after squeezing the No. 1 and No. 2 radiator
hoses, add coolant.
(g) Slowly fill the radiator with TOYOTA Super Long Life
Coolant (SLLC).
Standard capacity:
11.3 liters (12.0 US qts, 10.0 Imp. qts)
HINT:
• TOYOTA vehicles are filled with TOYOTA SLLC
at the factory. In order to avoid damage to the
engine cooling system and other technical
problems, only use TOYOTA SLLC or similar
high quality ethylene glycol based non-silicate,
non-amine, non-nitrite, non-borate coolant with
long-life hybrid organic acid technology (coolant
with long-life hybrid organic acid technology
consists of a combination of low phosphates and
organic acids).
• Contact your TOYOTA dealer for further details.
NOTICE:
Never use water as a substitute for engine
coolant.
(h) Slowly pour coolant into the radiator reservoir tank
until it reaches the FULL line.
(i) Squeeze the No. 1 and No. 2 radiator hoses several
times by hand, and then check the level of the
coolant.
If the coolant level is low, add coolant.
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CO–82GR-FE COOLING – COOLANT
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(j) Bleed air from the cooling system.
(1) Warm up the engine until the thermostat opens.
While the thermostat is open, circulate the
coolant for several minutes.
HINT:
The thermostat open timing can be confirmed
by squeezing the inlet radiator hose by hand,
and checking when the engine coolant starts to
flow inside the hose.
(2) Maintain the engine speed at 2500 to 3000
rpm.
(3) Squeeze the inlet and outlet radiator hoses
several times by hand to bleed air.
CAUTION:
When squeezing the radiator hoses:
• Wear protective gloves.
• Be careful as the radiator hoses are hot.
• Keep your hands away from the radiator
fan.
NOTICE:
• Make sure that the radiator reservoir still
has some coolant in it.
• If the coolant temperature gauge
indicates an excessive temperature, turn
off the engine and let it cool.
• If there is not enough coolant, the engine
may overheat or be seriously damaged.
• If the radiator reservoir does not have
enough coolant, perform the following: 1)
stop the engine, 2) wait until the coolant
has cooled down, and 3) add coolant
until the coolant is filled to the FULL line.
(k) Stop the engine and wait until the engine coolant
cools down.
(l) Add engine coolant to the FULL line on the radiator
reservoir.
5. INSPECT FOR COOLANT LEAK (See page CO-1)
6. INSTALL V-BANK COVER SUB-ASSEMBLY (See
page EM-63)
7. INSTALL NO. 1 ENGINE UNDER COVER (See page
EM-63)

CO–462GR-FE COOLING – RADIATOR
CO
24. INSTALL BATTERY (See page EM-59)
25. INSTALL NO. 2 AIR CLEANER INLET (See page EM-
60)
26. ADD ENGINE COOLANT (See page CO-7)
27. INSPECT FOR COOLANT LEAK (See page CO-1)
28. ADD AUTOMATIC TRANSAXLE FLUID
29. CHECK AUTOMATIC TRANSAXLE FLUID (See page
AX-123)
30. INSTALL NO. 1 ENGINE UNDER COVER (See page
EM-63)
31. INSTALL V-BANK COVER SUB-ASSEMBLY (See
page EM-63)
32. VEHICLE PREPARATION FOR HEADLIGHT AIM
ADJUSTMENT (See page LI-71)
33. PREPARATION FOR HEADLIGHT AIMING (Using a
tester) (See page LI-71)
34. PREPARATION FOR HEADLIGHT AIMING (Using a
screen) (See page LI-72)
35. HEADLIGHT AIMING INSPECTION (See page LI-74)
36. HEADLIGHT AIMING ADJUSTMENT (See page LI-75)
37. VEHICLE PREPARATION FOR FOG LIGHT AIM
ADJUSTMENT (w/ Fog Light) (See page LI-82)
38. PREPARATION FOR FOG LIGHT AIMING (Using a
screen) (w/ Fog Light) (See page LI-83)
39. FOG LIGHT AIMING INSPECTION (w/ Fog Light) (See
page LI-84)
40. FOG LIGHT AIMING ADJUSTMENT (w/ Fog Light)
(See page LI-85)

2GR-FE COOLING – WATER PUMPCO–11
CO
REMOVAL
1. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE
HINT:
See page EM-26
2. SECURE ENGINE (See page EM-37)
3. REMOVE GENERATOR ASSEMBLY (See page CH-17)
4. REMOVE COMPRESSOR AND MAGNETIC CLUTCH
(See page AC-227)
5. REMOVE NO. 1 ENGINE FRONT MOUNTING
BRACKET LH (See page EM-42)
6. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY
(a) Remove the 2 bolts, 2 idler pulley cover plates and 2
idler pulley sub-assemblies.
7. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY
(a) Remove the 5 bolts and V-ribbed belt tensioner
assembly.
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CO–142GR-FE COOLING – WATER PUMP
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4. INSTALL V-RIBBED BELT TENSIONER ASSEMBLY
(a) Install the V-ribbed belt tensioner assembly with the
5 bolts.
Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
5. INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY
(a) Install the 2 idler pulley cover plates and idler pulley
sub-assemblies with the 2 bolts.
Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
6. INSTALL NO. 1 ENGINE FRONT MOUNTING
BRACKET LH (See page EM-45)
7. INSTALL GENERATOR ASSEMBLY (See page CH-26)
8. INSTALL COMPRESSOR AND MAGNETIC CLUTCH
(See page AC-231)
9. INSTALL ENGINE HANGERS (See page EM-50)
10. REMOVE ENGINE STAND
11. INSTALL ENGINE ASSEMBLY WITH TRANSAXLE
HINT:
See page EM-44
12. ADD ENGINE COOLANT (See page CO-7)
13. INSPECT FOR COOLANT LEAK (See page CO-1)
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2GR-FE COOLING – THERMOSTATCO–15
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ENGINE
2GR-FE COOLING
THERMOSTAT
COMPONENTS
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CO–162GR-FE COOLING – THERMOSTAT
CO
REMOVAL
1. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
2. REMOVE NO. 1 ENGINE UNDER COVER (See page
EM-26)
3. DRAIN ENGINE COOLANT (See page CO-6)
4. REMOVE FRONT WHEEL RH
5. REMOVE FRONT FENDER APRON SEAL RH
6. REMOVE V-RIBBED BELT (See page EM-6)
7. DISCONNECT NO. 2 RADIATOR HOSE
(a) Disconnect the No. 2 radiator hose from the engine.
8. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY
(a) Remove the bolt, idler pulley cover plate and idler
pulley sub-assembly.
9. REMOVE WATER INLET
(a) Remove the 2 nuts and water inlet.
10. REMOVE THERMOSTAT
(a) Remove the gasket from the thermostat.
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CO–182GR-FE COOLING – THERMOSTAT
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3. INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY
(a) Install the idler pulley cover plate and idler pulley
sub-assembly with the bolt.
Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
4. CONNECT NO. 2 RADIATOR HOSE
(a) Connect the No. 2 radiator hose to the engine.
5. INSTALL V-RIBBED BELT (See page EM-7)
6. INSTALL FRONT FENDER APRON SEAL RH
7. INSTALL FRONT WHEEL RH
8. ADD ENGINE COOLANT (See page CO-7)
9. INSTALL NO. 1 ENGINE UNDER COVER (See page
EM-63)
10. INSPECT FOR COOLANT LEAK (See page CO-1)
11. INSTALL V-BANK COVER SUB-ASSEMBLY (See
page EM-63)
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2GR-FE COOLING – RADIATORCO–29
CO
REMOVAL
1. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
2. REMOVE NO. 1 ENGINE UNDER COVER (See page
EM-26)
3. DRAIN ENGINE COOLANT (See page CO-6)
4. REMOVE NO. 2 AIR CLEANER INLET (See page EM-
28)
5. REMOVE BATTERY (See page EM-26)
6. REMOVE FRONT BUMPER ASSEMBLY (See page
ET-3)
7. REMOVE FRONT BUMPER ENERGY ABSORBER
8. REMOVE NO. 1 AIR CLEANER INLET (See page EM-
28)
9. DISCONNECT RADIATOR RESERVE TANK HOSE OR
PIPE
(a) Disconnect the radiator reserve tank hose or pipe
from the radiator.
10. DISCONNECT NO. 1 RADIATOR HOSE
(a) Disconnect both connections of the No. 1 radiator
hose from the radiator.
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