Page 160 of 1690

160N5±01
P13560
P00436
P24125
10mm
± COOLINGCOOLING SYSTEM (1ZZ±FE/3ZZ±FE)
16±3
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. INSPECT THERMOSTAT
HINT:
The valve opening temperature is inscribed on the thermostat.
(a) Immerse the thermostat in water and gradually heat the
water.
(b) Check the valve opening temperature.
Valve opening temperature:
80 to 84C (176 to 183F)
If the valve opening temperature is not as specified, replace the
thermostat.
(c) Check the valve lift.
Valve lift: 10 mm (0.39 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.
2. INSPECT RADIATOR CAP SUB±ASSY
NOTICE:
If the radiator cap is contaminatied, rinse it with water.
Before using a radiator cap tester, wet the relief valve
and the pressure valve with engine coolant or water.
When performing following steps (a) and (b), keep the
tester at an angle of over 30 above horizontal.
Page 162 of 1690
160MV±01
A77341
Radiator Drain Cock Plug Radiator Cap
Cylinder Bllock Drain Cock Plug
Drain Pipe
± COOLINGENGINE COOLANT (1AZ±FE)
16±19
AVENSIS REPAIR MANUAL (RM1018E)
ENGINE COOLANT (1AZ±FE)
REPLACEMENT
1. DRAIN ENGINE COOLANT
CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot, as fluid
and steam can be blown out under pressure.
(a) Remove the radiator cap.
(b) Loosen the radiator plug and drain the coolant.
Page 163 of 1690

16±20
±
COOLING ENGINE COOLANT(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
2.ADD ENGINE COOLANT
(a)Tighten the radiator drain plug, and pour coolant into radiator until it \
overflows. Capacity:
Transmission typeSteeringCoolant Capacity
[liters (US gts, lmp. gts)]
M/TLHD6.0 (6.3, 5.3)
M/TRHD6.1 (6.4, 5.4)
A/TLHD6.3 (6.7, 5.5)
A/TRHD6.4 (6.8, 5.6)
NOTICE:
Do not use an alcohol type coolant or plain water alone.
The coolant should be mixed with plain water (preferably demineralized wat\
er or distilled wa-
ter).
HINT:
Use of improper coolants may damage engine cooling system.
Use ºToyota Long Life Coolantº or equivalent and mix it with plain water ac\
cording to the manufactur-
er's directions.
Using of coolant with includes more than 50 % (freezing protection down to ±\
35 C (±31 F)) or 60 %
(freezing protection down to ±50 C (±58 F)) of ethylene±glycol is recommended but not more than
70 %.
Press the radiator inlet and outlet hose several times with hard.
If the coolant level gets lower, pour coolant.
(b)Reinstall the radiator cap.
(c)Pour engine coolant into the reservoir tank until it reaches full line.
(d)Warm up the engine until the thermostat valve begins to open.
HINT:
Press the radiator inlet and outlet hose several times with hard during \
the warming up.
(e)Stop the engine and wait until the coolant temp. Gets cold. Then remove the radiator cap to check the coolant level.
HINT:
If the level gets lower, perform the procedures above again.
If the level does not gets lower, adjust the reservoir tank coolant level.
3.CHECK FOR ENGINE COOLANT LEAKS (See page 16±13)
Page 164 of 1690
160MU±01
A77341
Radiator Drain Cock Plug Radiator Cap
Cylinder Bllock Drain Cock Plug
Drain Pipe
± COOLINGENGINE COOLANT (1AZ±FSE)
16±31
AVENSIS REPAIR MANUAL (RM1018E)
ENGINE COOLANT (1AZ±FSE)
REPLACEMENT
1. DRAIN ENGINE COOLANT
CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot, as fluid
and steam can be blown out under pressure.
(a) Remove the radiator cap.
(b) Loosen the radiator plug and drain the coolant.
Page 165 of 1690

16±32
±
COOLING ENGINE COOLANT(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
2.ADD ENGINE COOLANT
(a)Tighten the radiator drain plug, and pour coolant into radiator until it \
overflows. Capacity:
Transmission typeSteeringCoolant Capacity
[liters (US gts, lmp. gts)]
M/TLHD6.0 (6.3, 5.3)
M/TRHD6.1 (6.4, 5.4)
A/TLHD6.3 (6.7, 5.5)
A/TRHD6.4 (6.8, 5.6)
NOTICE:
Do not use an alcohol type coolant or plain water alone.
The coolant should be mixed with plain water (preferably demineralized wat\
er or distilled wa-
ter).
HINT:
Use of improper coolants may damage engine cooling system.
Use ºToyota Long Life Coolantº or equivalent and mix it with plain water ac\
cording to the manufactur-
er's directions.
Using of coolant with includes more than 50 % (freezing protection down to ±\
35 C (±31 F)) or 60 %
(freezing protection down to ±50 C (±58 F)) of ethylene±glycol is recommended but not more than
70 %.
Press the radiator inlet and outlet hose several times with hard.
If the coolant level gets lower, pour coolant.
(b)Reinstall the radiator cap.
(c)Pour engine coolant into the reservoir tank until it reaches full line.
(d)Warm up the engine until the thermostat valve begins to open.
HINT:
Press the radiator inlet and outlet hose several times with hard during \
the warming up.
(e)Stop the engine and wait until the coolant temp. Gets cold. Then remove the radiator cap to check the coolant level.
HINT:
If the level gets lower, perform the procedures above again.
If the level does not gets lower, adjust the reservoir tank coolant level.
3.CHECK FOR ENGINE COOLANT LEAKS(See page 16±25)
Page 166 of 1690

160MD±01
A79169
Water Drain
Plug
Radiator Drain Plug
A63951
A
B 16±44
± COOLINGENGINE COOLANT (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
ENGINE COOLANT (1CD±FTV)
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the radiator cap.
(b) Loosen the radiator and engine drain plugs, drain the
coolant.
(c) Close the drain plugs.
Torque: 13 Nm (133 kgfcm, 10 ftlbf) for engine
2. ADD ENGINE COOLANT
(a) Loosen air bleed valve A.
(b) Fill the cooling system with coolant up to line B.
Capacity:
With heater: 7.6 liters (8.0 US qts, 6.7 lmp. qts)
Without heater: 7.4 liters (7.8 US qts, 6.5 lmp. qts)
HINT:
Use of improper coolants may damage engine cooling
system.
Use ºToyota Long Life Coolantº or equivalent and mix it
with plain water according to the manufacturer's instruc-
tion.
Using of coolant which includes more than 50 % (freezing
protection down to ±35C (±31F)) or 60 % (freezing
protection down to ±50C (±58F)) of ethylene±glycol is
recommended but not more than 70 %.
(c) Tighten the air bleed valve securely.
(d) Install the radiator cap securely.
(e) Warm up the engine.
HINT:
Warm up the engine with the speed of 2,000 rpm or more and
keep the warm±up until the thermostat has open and the radia-
tor reservoir has become hot.
(f) Run the engine intermittently for 5 seconds at 3,000 rpm
and for 45 seconds at idle.
(g) Do the above operation for 7 minutes or more.
(h) After the engine has become cold, check that the coolant
level is between LOW and FULL lines.
Page 167 of 1690
± COOLINGENGINE COOLANT (1CD±FTV)
16±45
AVENSIS REPAIR MANUAL (RM1018E)
3. CHECK FOR ENGINE COOLANT LEAKS
(a) Fill the radiator with coolant and attach a radiator cap tester.
(b) Pump it to 137 kPa (1.4 kgf/cm
2,
19.9 psi), and check that the pressure does not drop.
Page 168 of 1690

160MH±01
A64364
Radiator CapCylinder Block
Drain Cock Plug
Drain Pipe
Radiator
Drain Cock Plug
± COOLINGENGINE COOLANT (1ZZ±FE/3ZZ±FE)
16±7
AVENSIS REPAIR MANUAL (RM1018E)
ENGINE COOLANT (1ZZ±FE/3ZZ±FE)
REPLACEMENT
1. DRAIN ENGINE COOLANT
CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot.
Thermal expansion will cause hot engine coolant and
steam to blow out from the radiator.
(a) Remove the radiator cap.
(b) Loosen the radiator drain cock plug and the cylinder block
drain cock plug, and drain engine coolant.
(c) Close the radiator drain cock plug.
(d) Close the cylinder block drain plug.
Torque: 13 Nm (130 kgfcm, 9 ftlbf) for engine
2. ADD ENGINE COOLANT
(a) Tighten the radiator drain plug, and pour coolant into radiator until it overflows.
Capacity:
Transmission typeSteeringCoolant Capacity
[liters (US gts, lmp. gts)]
M/TLHD5.8 (6.1, 5.1)
M/TRHD5.9 (6.2, 5.2)
A/TLHD5.7 (6.0, 5.0)
A/TRHD5.8 (6.1, 5.1)
NOTICE:
Do not use an alcohol type coolant or plain water alone.
The coolant should be mixed with plain water (preferably demineralized water or distilled wa-
ter).
HINT:
Use of improper coolants may damage engine cooling system.
Use ºToyota Long Life Coolantº or equivalent and mix it with plain water according to the manufactur-
er's instruction.
Using of coolant with includes more than 50 % (freezing protection down to ±35C (±31F)) or 60 %
(freezing protection down to ±50C (±58F)) of ethylene±glycol is recommended but not more than
70 %.
Press the radiator inlet and outlet hose several times by hand.
If the coolant level gets lower, pour coolant.
(b) Reinstall the radiator cap.
(c) Pour engine coolant into the reservoir tank until it reaches full line.