TOYOTA SIENNA 2007 Service Repair Manual

2GR-FE COOLING – THERMOSTATCO–17
CO
INSPECTION
1. INSPECT THERMOSTAT
(a) Inspect the thermostat.
HINT:
The valve opening temperature is inscribed on the
thermostat.
(b) Immerse the thermostat in water and gradually heat
the water.
(c) Check the valve opening temperature.
Valve opening temperature:
80 to 84
C (176 to 183F)
If the valve opening temperature is not as specified,
replace the thermostat.
(d) Check the valve lift.
Valve lift:
7.7 mm (0.303 in.) or more at 95
C (203F)
If the valve lift is not as specified, replace the
thermostat.
(e) Check that the valve is fully closed when the
thermostat is at low temperatures (below 40
C
(104
F)).
If it is not fully closed, replace the thermostat.
INSTALLATION
1. INSTALL THERMOSTAT
(a) Install a new gasket to the thermostat.
(b) Install the thermostat with the jiggle valve facing up.
HINT:
The jiggle valve may be set within 10
on either side
of the prescribed position.
2. INSTALL WATER INLET
(a) Install the water inlet with the 2 nuts .
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
P013560
P000436
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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 – COOLING FAN MOTORCO–19
CO
COOLING FAN MOTOR
ON-VEHICLE INSPECTION
1. NO. 1 COOLING FAN MOTOR
(a) Check that the motor turns smoothly when the
battery is connected to the fan motor connector.
(b) Measure the current while the motor is turning.
Standard current:
11.8 to 14.8 A at 20
C (68F)
If the result is not as specified, replace the No. 1
cooling fan motor.
2. NO. 2 COOLING FAN MOTOR
(a) Check that the motor turns smoothly when the
battery is connected to the fan motor connector.
(b) Measure the current while the motor is turning.
Standard current:
9 to 11 A at 20
C (68F)
If the result is not as specified, replace the No. 2
cooling fan motor.
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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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CO–302GR-FE COOLING – RADIATOR
CO
11. DISCONNECT NO. 2 RADIATOR HOSE
(a) Disconnect the No. 2 radiator hose from the
radiator.
12. REMOVE HOOD LOCK RELEASE LEVER
PROTECTOR
(a) Disengage the 4 claws and remove the hood lock
release lever protector.
13. REMOVE HOOD LOCK ASSEMBLY
(a) With Hood Courtesy Switch:
(1) Disconnect the connector.
(b) Remove the 3 bolts.
(c) Disconnect the cable and remove the hood lock
assembly.
14. REMOVE HOOD LOCK SUPPORT SUB-ASSEMBLY
(a) Disconnect the ambient temperature sensor
connector.
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2GR-FE COOLING – RADIATORCO–31
CO
(b) Detach the clamp.
(c) Disconnect the low pitched horn and high pitched
horn connectors.
(d) Remove the 2 bolts and hood lock support sub-
assembly.
15. DISCONNECT COOLING FAN ECU CONNECTOR
(a) Disconnect the cooling fan ECU connector.
(b) Detach the clamp.
16. REMOVE RADIATOR UPPER SUPPORT SUB-
ASSEMBLY
(a) Remove the 4 bolts and radiator upper support sub-
assembly.
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CO–322GR-FE COOLING – RADIATOR
CO
17. DISCONNECT NO. 2 OIL COOLER OUTLET TUBE
SUB-ASSEMBLY
(a) Disconnect the No. 1 oil cooler inlet and No. 1 oil
cooler outlet hoses from the No. 2 oil cooler outlet
tube sub-assembly.
(b) Disconnect the No. 1 transmission oil cooler hoses
from the radiator.
(c) Remove the 2 bolts and No. 2 oil cooler outlet tube
sub-assembly.
18. REMOVE HEADLIGHT ASSEMBLY RH
(a) Use the same procedures for the RH side and LH
side.
HINT:
See page LI-69
19. REMOVE RADIATOR SIDE DEFLECTOR RH
(a) Disengage the 3 claws and remove the radiator side
deflector RH.
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2GR-FE COOLING – RADIATORCO–33
CO
20. REMOVE HEADLIGHT BRACKET RH
(a) Remove the 3 nuts and headlight bracket RH.
21. REMOVE PRESSURE FEED TUBE ASSEMBLY
(a) Remove the 2 bolts.
22. REMOVE RADIATOR SUPPORT CUSHION
(a) Remove the 2 radiator support cushions from the
No. 1 radiator support.
23. REMOVE NO.1 RADIATOR SUPPORT
(a) Detach the clamp.
(b) Remove the 6 bolts and No. 1 radiator support.
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CO–342GR-FE COOLING – RADIATOR
CO
24. REMOVE RADIATOR ASSEMBLY WITH FAN
SHROUD AND FAN MOTOR
(a) Remove the 2 bolts and separate the condenser
assembly from the radiator assembly with fan
shroud and fan motor.
(b) Remove the radiator assembly with fan shroud and
fan motor from the body.
25. REMOVE FAN SHROUD WITH FAN MOTOR
(a) Remove the 2 bolts and fan shroud with fan motor
from the radiator.
26. REMOVE RADIATOR SUPPORT LOWER
(a) Remove the 2 radiator support lowers from the
radiator assembly.
27. REMOVE NO. 2 RADIATOR SUPPORT
(a) Remove the 2 bolts and No. 2 radiator support from
the radiator.
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2GR-FE COOLING – RADIATORCO–35
CO
28. DISCONNECT INLET SUB-ASSEMBLY
(a) Disconnect the inlet hose from the radiator.
(b) Remove the bolt and inlet sub-assembly from the
radiator.
DISASSEMBLY
1. REMOVE RADIATOR WATER INLET
(a) Remove the 2 bolts and radiator water inlet.
2. REMOVE DRAIN PLUG
(a) Remove the drain plug and air drain plug.
(b) Remove the 2 O-rings.
3. REMOVE LOWER RADIATOR TANK
(a) Install the claw to the overhaul handle, inserting it in
the hole in Part A as shown in the illustration.
SST 09230-01010 (09231-01010, 09231-01030)
(b) While squeezing the handle, adjust the stopper bolt
so that dimension B is as specified below.
Dimension B:
0.2 to 0.3 mm (0.008 to 0.012 in.)
NOTICE:
If the stopper bolt is not adjusted, the claw may
be damaged.
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