16-9

COOLING - WATER PUMP ASSY

WATER PUMP ASSY

160M1-02

COMPONENTS

FR Wiper Arm RH

Front Wiper Arm

Head Cover FR Wiper Arm LH
20 (205, 15)

20 (205, 15)
Front Wiper Arm Head Cover

Cowl Top Ventilator Louver

Sub-assy

Windshield Wiper Motor

Assy
Cowl Top to Cowl Brace Inner No. 1 5.5 (56, 49 in.⋅lbf)

x2 x4
7.5 (76, 66 in.⋅lbf)

7.5 (76, 66 in.⋅lbf)

x7
Windshield Wiper Motor
Connector
Cowl Top Panel Sub-assy
Outer Front

N·m (kgf·cm, ft·lbf) : Specified torque

A79467

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COOLING - WATER PUMP ASSY

Front Fender Apron Seal RH

Vane Pump V Belt

64 (653, 47) Engine Moving Control Rod

V Belt No. 1
23 (235, 17)

64 (653, 47) 8.4 (85, 74 in.⋅lbf)

28 (286, 21)
58 (591, 43)

Generator Bracket No. 2

Engine Mounting Stay No. 2 RH

N·m (kgf·cm, ft·lbf) : Specified torque

A78352

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COOLING - WATER PUMP ASSY

Timing Belt
8.5 (87, 75 in.⋅lbf)

Timing Belt No. 2 Cover

Timing Belt Guide No. 2

Engine Mounting Bracket RH

28 (286, 21)

Timing Belt No. 1 Cover

220 (2,250, 162) 8.5 (87, 75 in.⋅lbf)

Crankshaft Pulley

Engine Wire
Protector

27 (280, 20)

Chain Tensioner
Assy No. 1

N·m (kgf·cm, ft·lbf) : Specified torque

A78353

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COOLING - WATER PUMP ASSY

Timing Belt No. 3 Cover

Gasket

Collar
8.5 (87, 76 in.⋅lbf)
Bushing

x6

43 (438, 32)
Camshaft Timing
Pulley
Timing Belt Idler
Sub-assy No. 2
125 (1,275, 92)

Engine Wire
Water Pump Assy

Water Pump Gasket

8.0 (82, 71 in.⋅lbf)

8.0 (82, 71 in.⋅lbf)

Timing Belt Idler Sub-assy No. 1

34 (347, 25)

N·m (kgf·cm, ft·lbf) : Specified torque

Non-reusable part
A78394

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COOLING - WATER PUMP ASSY
1602H-10

INSPECTION

1. INSPECT WATER PUMP ASSY

(a) Visually check the drain hole for coolant leakage.
(b) Turn the pulley and check that the water pump bearing
moves smoothly and does not make noise.

P12487

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COOLING - COOLING FAN SYSTEM
160M8-02

INSPECTION

1. INSPECT COOLING FAN RELAY

(a) Continuity inspection.
(1) Using an ohmmeter, check for continuity between
each terminal.
Specified condition:
Terminal No. Specified condition
1-2 Continuity
No continuity
A35654
3-5 Continuity
(Apply battery voltage terminals 1 and 2)

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COOLING - COOLING SYSTEM
160M6-02

INSPECTION

1. INSPECT THERMOSTAT
HINT:
The thermostat is numbered with the valve opening tempera-
ture.

P13560

(a) Immerse the thermostat in water and gradually heat the

water.
(b) Check the valve opening temperature of the thermostat.
Valve opening temperature:
80 to 84C (176 to 183F)
If the valve opening temperature is not as specified, replace the
thermostat.

P00436

(c) Check the valve lift.

Valve lift: 10 mm (0.394 in.) or more at 95C (203F)
If the valve lift is not as specified, replace the thermostat.
(d) Check that the valve is fully closed when the thermostat
is at low temperatures (below 77C (171F)).
If not closed, replace the thermostat.
10mm

A51911

2. INSPECT WATER OUTLET CAP SUB-ASSY

NOTICE:

If the radiator cap has contaminations, rinse it with
water.

Before using a radiator cap tester, wet the relief valve
and pressure valve with engine coolant or water.

When performing steps (a) and (b) below, keep the
tester at an angle of over 30 above the horizontal.

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COOLING - COOLING SYSTEM

(a) Using a radiator cap tester, slowly pump the tester and
Radiator Cap Tester check that air is coming from the vacuum valve.
Pump speed: 1 push / 3 seconds or more
NOTICE:
Push the pump at a constant speed.
30 or more
If air is not coming from the vacuum valve, replace the radiator
cap.
Radiator Cap (b) Pump the tester and measure the relief valve opening
A51912 pressure.
Pump speed: 1 push within 1 second
NOTICE:
The following pump speed is for the first pump only (in or-
der to close the vacuum valve). After the first pump, the
pump speed can be reduced.
Standard opening pressure:
83 to 113 kPa (0.85 to 1.15 kgf/cm2, 12.1 to 16.4 psi)
Minimum opening pressure:
69 kPa (0.7 kgf/cm2, 10.0 psi)
If the opening pressure is less than minimum, replace the radia-
tor cap.
HINT:
Use the tester’s maximum reading as the opening pressure.

3. INSPECT WATER PUMP ASSY

Turn (a) Visually check the drain hole for coolant leakage.
If leakage is found, replace the water pump.
(b) Turn the pulley, and check that the water pump bearing
moves smoothly and does not make noise.
If necessary, replace the water pump.

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 16-5
COOLING - COOLING FAN SYSTEM

COOLING FAN SYSTEM

160M7-02

ON-VEHICLE INSPECTION
1. INSPECT COOLING FAN OPERATION WHEN COOLANT TEMPERATURE IS 95C (203F) BE-
LOW
(a) Check that the cooling fan does not operate when turning the ignition switch ON with A/C switch OFF.
(b) Check that the cooling fan operates when turning the ignition switch ON with disconnecting the engine
coolant temperature sensor connector.

2. INSPECT COOLING FAN OPERATION WHEN COOL-

Cooling Fan Operation
ANT TEMPERATURE IS 97C (207F) ABOVE
(a) Warm up the engine and turn the A/C switch OFF.
97 C (207 F) (b) Check that the cooling fan operates when coolant tem-
ON
perature is 97C (207F) above.
(c) Check that the cooling fan stops when coolant tempera-
OFF ture is 95C (203F) below.
95 C (203 F)
Z13471

Cooling Fan ECU Connector

3. INSPECT COOLING FAN ECU
(a) Check the cooling fan ECU power source.
(1) Disconnect the cooling fan ECU connector.
(2) Measure the voltage between the terminals +B and
GND.
Voltage: 9 to 14 V
If the voltage is not specified, check the fusible link, fuse, wire
harness and fan relay.
A50564 (3) Reconnect the connectors.

Cooling Fan Connector (b) Check the cooling fan operation.

(1) Disconnect the cooling fan connectors.
Fan Fan No.2
(2) Check thet the fan operates when applying battery
positive to terminal M+ and and battery negative to
terminal M-.
(3) Measure the amperage.
Fan operation amperage: 10.6 to 16.6 A
(4) Disconnect the cooling fan No.2 connector.
M- (-) M+ (+) S- (-) S+ (+)
A79212 (5) Check thet the fan operates when applying battery
positive to terminal S+ and and battery negative to
terminal S-.
(6) Measure the amperage.
Fan No. 2 operation amperage: 5.6 to 11.6 A
It is not as specified, replace the fan motor(s).
(7) Reconnect the cooling fan connectors.

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COOLING - COOLING FAN SYSTEM

(c) Check the wire harness continuity (ECM - cooling fan ECU).
(1) Disconnect the ECM connector and cooling fan ECU connector SI.
(2) Check the wire harness continuity.
If it is not specified, repair or replace the wire harness.
HINT:
Wire harness condition is diagnosed by cooling fan operartion.
Cooling fan operation Wire harness condition
Not operate Short
Operate continuously Open
(d) Check the ECM power source.
(e) Check RFC signal generation.
NOTICE:
Perform this inspection when coolant temperature is 82C (180F) below.
(1) Connect SST to M+ wire.
SST 09082-00040, 09083-00350
(2) Connect an oscilloscope to terminals RFC and E1 of the ECM.
(3) Check the signal generation and measure fan amperage under the condition.
Condition RFC signal generation Fan amperage Fan operation
Engine stopped, IG switch ON - - Not operate
Engine idling, A/C OFF - - Not operate
Engine idling, A/C ON Indication 1 7 to 11 A Operate
Engine idling, Disconnect engine coolant
Indication 2 10 to 19 A Operate (High speed)
temperature sensor connector

Indication 1 Oscilloscope indication:

HINT:

If RFC signal is not specified, replace the ECM.
5V

When the fan amperage has a problem in spite that the
RFC signal has no problem, replace the cooling fan ECU.

0V

2 ms
Indication 2

5V

0V

A35652
2 ms
A35921 A56763

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COOLING - COOLING SYSTEM

COOLING SYSTEM
160M5-02

ON-VEHICLE INSPECTION

1. INSPECT COOLING SYSTEM FOR LEAKS

CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot. Ther-
mal expansion will cause hot engine coolant and steam to
blow out from the radiator.
(a) Fill the radiator with coolant and attach a radiator cap tes-
ter.
A60522 (b) Warm up the engine.
(c) Pump it to 118 kPa (1.2 kgf/cm2, 17.1 psi) and check that
the pressure does not drop.
HINT:
If the pressure drops, check the hoses, radiator and water
pump for leaks. If the coolant has not leaked outside, check the
heater core, the cylinder block and the cylinder head.
2. CHECK ENGINE COOLANT LEVEL AT RESERVOIR
(a) Check that the engine coolant level is between the ”LOW” and ”FULL” lines when the engine is cold.
HINT:
If it is below the ”LOW” line, check for leaks and add ”Toyota Super Long Life Coolant” or similar high quality
ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid
organic acid technology up to the ”FULL” line.
3. CHECK ENGINE COOLANT QUALITY
(a) Remove the radiator cap.
CAUTION:
To avoid the danger of being burned, do not remove the radiator cap while the engine and radiator
are still hot. Thermal expansion will cause hot engine coolant and steam to blow out from the radiator.
(b) Check around the radiator cap and radiator filler hole for any excessive deposits of rust or scale, and
that the coolant is free from oil.
HINT:
If excessively dirty, replace the coolant.
(c) Reinstall the radiator cap.

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COOLING - COOLING SYSTEM

4. INSPECT FINS BLOCKAGE

(a) If fins are clogged, wash them with water or a steam
cleaner and dry with compressed air.
NOTICE:

If the distance between the steam cleaner and the
core is too close, there is a possibility of damaging
the fins, so keep the following injection distance.
Injection Pressure Injection Distance
A73603
kPa (kgf/cm2, psi) mm (in.)
2,942 to 4,903
300 (11.811)
(30 to 50, 427 to 711)
4,903 to 7,845
500 (19.685)
(50 to 80, 711 to 1,138)

If the fins are bent, straighten them with a screwdriver

or pliers.

Be careful not to expose electronic components to
water.

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COOLING - WATER PUMP ASSY
160M2-02

REPLACEMENT
1. DRAIN COOLANT (See page 16-8 )
2. REMOVE FRONT WHEEL RH
3. REMOVE FRONT WIPER ARM HEAD CAP
4. REMOVE FR WIPER ARM RH (See page 66-8 )
5. REMOVE FR WIPER ARM LH (See page 66-8 )
6. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSY (See page 66-8 )
7. REMOVE WIPER LINK ASSY (See page 66-8 )
8. REMOVE COWL TOP TO COWL BRACE INNER NO.1 (See page 11-13 )
9. REMOVE COWL TOP PANEL SUB-ASSY OUTER FRONT (See page 11-13 )
10. REMOVE FRONT FENDER APRON SEAL RH
11. REMOVE V (COOLER COMPRESSOR TO CRANKSHAFT PULLEY) BELT NO.1
(See page 14-5 )
12. REMOVE VANE PUMP V BELT (See page 14-5 )
13. REMOVE ENGINE MOVING CONTROL ROD (See page 14-84 )
14. REMOVE ENGINE MOUNTING STAY NO.2 RH (See page 14-84 )
15. REMOVE GENERATOR BRACKET NO.2 (See page 14-84 )
16. REMOVE CRANKSHAFT PULLEY (See page 14-84 )
SST 09213-54015 (91651-60855), 09330-00021, 09950-50013 (09951-05010, 09952-05010,
09953-05020, 09954-05031)
17. REMOVE TIMING BELT NO.1 COVER
18. REMOVE TIMING BELT NO.2 COVER (See page 14-84 )
19. REMOVE ENGINE MOUNTING BRACKET RH (See page 14-84 )
20. REMOVE TIMING BELT GUIDE NO.2
21. REMOVE TIMING BELT (See page 14-84 )
22. REMOVE TIMING BELT IDLER SUB-ASSY NO.2
23. REMOVE CAMSHAFT TIMING PULLEY (See page 14-99 )
SST 09960-10010 (09962-01000, 09963-01000), 09249-63010
24. REMOVE TIMING BELT NO.3 COVER (See page 14-99 )
25. REMOVE TIMING BELT IDLER SUB-ASSY NO.1
(a) Using a 10 mm socket hexagon wrench, remove the pivot bolt, the timing belt idler No.1 and the plate
washer.

26. REMOVE WATER PUMP ASSY

(a) Remove the 3 bolts, the 3 nuts and the water pump.

A78535

27. INSTALL WATER PUMP ASSY

(a) Install a new gasket and the water pump with the 3 bolts and the 3 nuts.
Torque: 8.0 N⋅m (82 kgf⋅cm, 71 in.⋅lbf)

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COOLING - WATER PUMP ASSY

28. INSTALL TIMING BELT IDLER SUB-ASSY NO.1

(a) Using a 10 mm socket hexagon wrench, install the plate washer and the timing belt idler No.1 with the
pivot bolt.
Torque: 34 N⋅m (347 kgf⋅cm, 25 ft⋅lbf)
29. INSTALL TIMING BELT NO.3 COVER (See page 14-99 )
30. INSTALL CAMSHAFT TIMING PULLEY (See page 14-99 )
SST 09960-10010 (09962-01000, 09963-01000), 09249-63010
31. INSTALL TIMING BELT IDLER SUB-ASSY NO.2 (See page 14-99 )
32. INSPECT TIMING BELT (See page 14-84 )
33. INSTALL TIMING BELT (See page 14-84 )
SST 09960-10010 (09962-01000, 09963-01000)
34. INSTALL CHAIN TENSIONER ASSY NO.1 (See page 14-84 )
35. INSTALL TIMING BELT GUIDE NO.2 (See page 14-84 )
36. INSTALL ENGINE MOUNTING BRACKET RH (See page 14-84 )
37. INSTALL TIMING BELT NO.2 COVER (See page 14-84 )
38. INSTALL TIMING BELT NO.1 COVER (See page 14-84 )
39. INSTALL CRANKSHAFT PULLEY (See page 14-84 )
SST 09213-54015 (91651-60855), 09330-00021
40. INSTALL GENERATOR BRACKET NO.2 (See page 14-84 )
41. INSTALL ENGINE MOUNTING STAY NO.2 RH (See page 14-84 )
42. INSTALL ENGINE MOVING CONTROL ROD (See page 14-84 )
43. INSTALL VANE PUMP V BELT (See page 14-5 )
44. INSTALL V (COOLER COMPRESSOR TO CRANKSHAFT PULLEY) BELT NO.1
(See page 14-5 )
45. INSPECT DRIVE BELT DEFLECTION AND TENSION (REFERENCE) (See page 14-1 )
46. INSTALL COWL TOP PANEL SUB-ASSY OUTER FRONT (See page 11-13 )
47. INSTALL COWL TOP TO COWL BRACE INNER NO.1 (See page 11-13 )
48. INSTALL WIPER LINK ASSY (See page 66-8 )
49. INSTALL FR WIPER ARM LH (See page 66-8 )
50. INSTALL FR WIPER ARM RH (See page 66-8 )
51. INSTALL FRONT WHEEL RH (See page 14-5 )
52. ADD COOLANT (See page 16-8 )
53. CHECK FOR ENGINE COOLANT LEAKS (See page 16-1 )

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COOLING - THERMOSTAT

THERMOSTAT
160M3-02

REPLACEMENT
1. DRAIN COOLANT (See page 16-8 )
2. REMOVE BATTERY
3. REMOVE AIR CLEANER CAP SUB-ASSY (See page 19-5 )
4. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSY
5. REMOVE AIR CLEANER INLET NO.2 (See page 19-5 )
6. REMOVE AIR CLEANER CASE (See page 19-5 )
7. REMOVE AIR CLEANER BRACKET (See page 19-5 )
8. REMOVE AIR CLEANER INLET NO.1 (See page 19-5 )
9. REMOVE STARTER ASSY (See page 19-5 )
10. DISCONNECT RADIATOR HOSE OUTLET

11. REMOVE WATER INLET

(a) Disconnect the wire harness clamp.
(b) Remove the bolts, the 3 nuts and the water inlet.

A78380

12. REMOVE THERMOSTAT

15
13. INSTALL THERMOSTAT

15
(a) Install a new gasket to the thermostat.
(b) Align the thermostat jiggle valve with the upper stud bolt,
and insert the thermostat in the water inlet housing.
HINT:
Jiggle Valve
The jiggle valve may be set within 15
of either side of the pre-
scribed position.

A80298

14. INSTALL WATER INLET

Torque:
Nut 8.0 N⋅m (82 kgf⋅cm, 71 in.⋅lbf)
Bolt 20 N⋅m (199 kgf⋅cm, 14 ft⋅lbf)
15. INSTALL STARTER ASSY (See page 19-5 )
16. INSTALL AIR CLEANER INLET NO.1 (See page 19-5 )
17. INSTALL AIR CLEANER BRACKET (See page 19-5 )
18. INSTALL AIR CLEANER CASE (See page 19-5 )
19. INSTALL AIR CLEANER INLET NO.2 (See page 19-5 )
20. INSTALL AIR CLEANER CAP SUB-ASSY (See page 19-5 )
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COOLING - THERMOSTAT

21. ADD COOLANT (See page 16-8 )

22. CHECK FOR ENGINE COOLANT LEAKS (See page 16-1 )

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COOLING - NO.2 RADIATOR ASSY

NO.2 RADIATOR ASSY

160M4-02

REPLACEMENT
1. DRAIN COOLANT (See page 16-8 )
2. DISCONNECT RADIATOR HOSE INLET
3. DISCONNECT RADIATOR HOSE OUTLET
4. DISCONNECT OIL COOLER INLET HOSE NO.1
5. DISCONNECT OIL COOLER OUTLET HOSE NO.1
6. REMOVE FRONT BUMPER COVER (See page 76-2 )
7. REMOVE AIR CLEANER CAP SUB-ASSY (See page 19-5 )
8. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSY
9. REMOVE AIR CLEANER INLET NO.2 (See page 19-5 )
10. REMOVE AIR CLEANER CASE (See page 19-5 )
11. REMOVE AIR CLEANER BRACKET (See page 19-5 )
12. REMOVE AIR CLEANER INLET NO.1 (See page 19-5 )

13. REMOVE HOOD LOCK RELEASE LEVER

PROTECTOR
(a) Release the 4 claws and remove the hood lock release le-
ver protector.

Claw I35512

14. REMOVE HOOD LOCK ASSY

(a) Remove the 3 bolts and separate hood lock.

I35513

15. REMOVE RADIATOR SUPPORT SUB-ASSY UPPER

(a) Disconnect the horn connectors.
(b) Remove the 5 bolts and the radiator upper support.
16. REMOVE FAN SHROUD
(a) Disconnect the engine coolant reservoir hose.
(b) Disconnect the fan motor connector.

I35514

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 16-19
COOLING - NO.2 RADIATOR ASSY

(c) Remove the 4 bolts and the fan shroud.

A78370

17. REMOVE RADIATOR SUPPORT SUB-ASSY UPPER

LH
(a) Remove the 3 bolts and the radiator support upper LH.

A78371

18. REMOVE RADIATOR SUPPORT SUB-ASSY UPPER

RH
(a) Remove the 3 bolts and the radiator support upper RH.

A78372

19. REMOVE RADIATOR SUPPORT SUB-ASSY LOWER

LH
(a) Remove the 3 bolts and the radiator support lower LH.

A78373

20. REMOVE RADIATOR SUPPORT SUB-ASSY LOWER

RH
(a) Remove the 3 bolts and the radiator support lower RH.

A78374

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COOLING - NO.2 RADIATOR ASSY

21. REMOVE NO.2 RADIATOR ASSY

22. INSTALL NO.2 RADIATOR ASSY

23. INSTALL RADIATOR SUPPORT SUB-ASSY LOWER

LH
(a) Install the radiator support lower LH with the 3 bolts.
A Torque:
Bolt A 5.0 N⋅m (51 kgf⋅cm, 44 in.⋅lbf)
B Bolt B 3.9 N⋅m (40 kgf⋅cm, 35 in.⋅lbf)
A

A78373

24. INSTALL RADIATOR SUPPORT SUB-ASSY LOWER

RH
(a) Install the radiator support lower RH with the 3 bolts.
A Torque:
Bolt A 5.0 N⋅m (51 kgf⋅cm, 44 in.⋅lbf)
B Bolt B 3.9 N⋅m (40 kgf⋅cm, 35 in.⋅lbf)
A

A78374

25. INSTALL RADIATOR SUPPORT SUB-ASSY UPPER

B
LH
A
A (a) Install the radiator support upper LH with the 3 bolts.
Torque:
Bolt A 5.0 N⋅m (51 kgf⋅cm, 44 in.⋅lbf)
Bolt B 3.9 N⋅m (40 kgf⋅cm, 35 in.⋅lbf)

A78371

26. INSTALL RADIATOR SUPPORT SUB-ASSY UPPER

B RH
A
A (a) Install the radiator support upper RH with the 3 bolts.
Torque:
Bolt A 5.0 N⋅m (51 kgf⋅cm, 44 in.⋅lbf)
Bolt B 3.9 N⋅m (40 kgf⋅cm, 35 in.⋅lbf)

A78372

27. INSTALL FAN SHROUD

Torque: 5.0 N⋅m (51 kgf⋅cm, 44 in.⋅lbf)
28. INSTALL RADIATOR SUPPORT SUB-ASSY UPPER
Torque: 5.0 N⋅m (51 kgf⋅cm, 44 in.⋅lbf)

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COOLING - NO.2 RADIATOR ASSY

29. INSTALL HOOD LOCK ASSY

Torque: 8.0 N⋅m (82 kgf⋅cm, 71 in.⋅lbf)
30. INSTALL AIR CLEANER INLET NO.1 (See page 19-5 )
31. INSTALL AIR CLEANER BRACKET (See page 19-5 )
32. INSTALL AIR CLEANER CASE (See page 19-5 )
33. INSTALL AIR CLEANER INLET NO.2 (See page 19-5 )
34. INSTALL AIR CLEANER CAP SUB-ASSY (See page 19-5 )
35. ADJUST HOOD SUB-ASSY (See page 75-2 )
36. ADD COOLANT (See page 16-8 )
37. CHECK FOR ENGINE COOLANT LEAKS (See page 16-1 )

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16-8
COOLING - ENGINE COOLANT

ENGINE COOLANT
16038-12

REPLACEMENT

Radiator Cap 1. DRAIN COOLANT

(a) Remove the radiator.
Drain Cock Plug CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot. Ther-
mal expansion will cause hot engine coolant and steam to
blow out from the radiator.
Drain Cock Plug
(b) Loosen the radiator drain plug and the 2 drain cock plugs,
Radiator Drain Plug
A78313 and drain the coolant.
(c) Tighten the 2 drain cock plugs.
Torque: 13 N⋅m (130 kgf⋅cm, 9 ft⋅lbf)
2. ADD COOLANT
(a) Tighten the drain plug of the radiator.
(b) Slowly fill the cooling system with coolant.
Capacity: 11.7 liters (12.4 US qts, 10.3 lmp. qts)
NOTICE:
Do not use plain water by itself.
HINT:

Use of improper coolant may damage the engine cooling system.

Use only ”Toyota Super Long Life Coolant” or similar high quality ethylene glycol based non-silicate,
non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology. (Cool-
ant with long-life hybrid organic acid technology consists of the combination of low phosphates and
organic acids.)

”Toyota Super Long Life Coolant” is premixed with 50% coolant and 50% deionized water. This coolant
provides protection down to about -35C (-31F).

Observe the coolant level inside the radiator by pressing the inlet and outlet radiator hoses several
times by hand. If the coolant level is low, add coolant.
(c) Install the radiator cap securely.
(d) Fill the radiator reservoir tank with the coolant.
(e) Warm up the engine.
NOTICE:
Warm up the engine until the fan starts running with the A/C, heater and defroster all off.
(f) Press the inlet and outlet radiator hoses several times by hand while warming up the engine.
(g) Stop the engine and wait until the coolant cools down.
(h) Remove the radiator cap and check the coolant level inside the radiator.
(i) If the coolant level is below the full level, perform the steps from (c) through (i) and repeat the operation
until the coolant level stays the full level.
(j) Recheck the coolant level inside the radiator reservoir tank. If it is below the full level by +10 mm, add
the coolant.
3. CHECK FOR ENGINE COOLANT LEAKS
(a) Fill the radiator with coolant and attach a radiator cap tester.
(b) Pump it to 118 kPa (1.2 kgf/cm2), and check for leakage.

2005 SIENNA REPAIR MANUAL (RM1163U)

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