2005 TOYOTA AVENSIS radiator

160N1±01
A78433
± COOLINGCOOLING SYSTEM (1AZ±FE)
16±13
AVENSIS REPAIR MANUAL (RM1018E)
COOLING SYSTEM (1AZ±FE)
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) Remove the radiator support opening cover.
(b) Remove the engine room cover side.
(c) Fill the radiator with coolant and attach a radiator cap tes-
ter.
(d) Warm up the engine.
(e) Pump it to 137 kPa (1.4 kgf/cm
2, 19.9 psi), and check that
the pressure does not drop.
If the pressure drops, check the hoses, radiator and water
pump for leaks. If there are no signs or traces of external coolant
leaks, check the heater core, cylinder block and head.
(f) Reinstall the engine room cover side.
(g) Reinstall the radiator support opening cover.
2. CHECK ENGINE COOLANT LEVEL AT RESERVOIR
(a) The engine coolant should be between the ºLOWº and ºFULLº lines, when the engine is cold.
If low, check for leaks and add ºToyota Long Life Coolantº or equivalent up to the ºFULLº 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 if there is any excessive deposits of rust or scale around the radiator cap and radiator filler hole;
the coolant should be free from oil.
If excessively dirty, replace the coolant.
(c) Reinstall the radiator cap.

160MK±01
A76724
A79300Upper Hook
±
COOLING RADIATOR ASSY(1ZZ±FE/3ZZ±FE)
16±11
AVENSIS REPAIR MANUAL (RM1018E)
RADIATOR ASSY(1ZZ±FE/3ZZ±FE)
REPLACEMENT
1.REMOVE RADIATOR SUPPORT OPENING COVER (See page 14±27)
2.REMOVE ENGINE ROOM COVER SIDE (See page 14±27)
3.ENGINE UNDER COVER SUB±ASSY NO.1 (See page 14±27)
4.DRAIN ENGINE COOLANT (See page 16±1)
5. DISCONNECT RADIATOR HOSE INLET
(a) Disconnect the radiator hose inlet from the radiator.
6. DISCONNECT RADIATOR HOSE OUTLET
(a) Disconnect the radiator hose outlet from the radiator.
7. DISCONNECT OIL COOLER INLET TUBE NO.1 (A/T TRANSAXLE)
(a) Disconnect the oil cooler inlet tube from the radiator.
8. DISCONNECT OIL COOLER OUTLET TUBE NO.1 (A/T TRANSAXLE)
(a) Disconnect the oil cooler outlet tube from the radiator.
9. REMOVE RADIATOR ASSY
(a) Disconnect the fan connector and the 2 harness clamps.
(b) Remove the 2 bolts and the relay block.
(c) Remove the 2 bolts, the 2 radiator support upper and theradiator.
(d) Remove the 2 support radiator LWRs from the radiator.
(e) Pinch and push each upper hook on the fan shroud to re- lease and remove the fan shroud from the radiator.

A79301
Upper Hook
Fan
Shroud
Radiator
16±12
±
COOLING RADIATOR ASSY(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
10.INSTALL RADIATOR ASSY
(a)Align the 2 keyways of the fan shroud with the 2 keys lo- cated on the lower bottom of the radiator and fit them.
(b)Install the fan should to the radiator with the 2 upper hooks. You can hear ºclickº sounds when the hooks are
securely fitted.
(c)Install the 2 support radiator LWRs to the radiator.
(d)Install the radiator with the 2 bolts and 2 radiator support
uppers.
Torque: 19 N
m (194 kgf
cm, 14 ft
lbf)
(e)Install the relay block with the 2 bolts.
(f)Connect the fan connector and 2 harness clamps.
11.ADD ENGINE COOLANT (See page 16±7)
12.CHECK FOR ENGINE COOLANT LEAKS (See page 16±1)

160MJ±01
A62118
10
10

16±10
±
COOLING THERMOSTAT(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
THERMOSTAT(1ZZ±FE/3ZZ±FE)
REPLACEMENT
1.REMOVE RADIATOR SUPPORT OPENING COVER (See page 14±27)
2.ENGINE ROOM COVER SIDE (See page 14±27)
3.REMOVE ENGINE UNDER COVER SUB±ASSY NO.1 (See page 14±27)
4.DRAIN ENGINE COOLANT (See page 16±1)
5.REMOVE FAN AND GENERATOR V BELT (See page 14±5)
6.REMOVE GENERATOR ASSY (See page 19±7)
7.REMOVE WATER INLET
(a)Remove the 2 nuts and the water inlet.
8.REMOVE THERMOSTAT 9.INSTALL THERMOSTAT
(a)Install a new gasket to the thermostat.
(b)Install the thermostat with the jiggle valve upward asshown in the illustration.
10.INSTALL WATER INLET
(a)Install the water inlet with the 2 nuts. Torque: 11 N
m (112 kgf
cm, 8 ft
lbf)
11.INSTALL GENERATOR ASSY (See page 19±7)
12.ADD ENGINE COOLANT (See page 16±7)
13.CHECK FOR ENGINE COOLANT LEAKS (See page 16±1)

160MI±01
B00150
AB ABB
B
A32555
±
COOLING WATER PUMP ASSY(1ZZ±FE/3ZZ±FE)
16±9
AVENSIS REPAIR MANUAL (RM1018E)
WATER PUMP ASSY(1ZZ±FE/3ZZ±FE)
REPLACEMENT
1.REMOVE RADIATOR SUPPORT OPENING COVER (See page 14±27)
2.REMOVE ENGINE ROOM COVER SIDE (See page 14±27)
3.REMOVE ENGINE UNDER COVER SUB±ASSY NO.1 (See page 14±27)
4.REMOVE ENGINE UNDER COVER RH (See page 14±27)
5.DRAIN ENGINE COOLANT (See page 16±1)
6.REMOVE FAN AND GENERATOR V BELT (See page 14±5)
7.REMOVE GENERATOR ASSY (See page 19±7)
8.REMOVE WATER PUMP ASSY
(a)Remove the 6 bolts, the water pump and the O±ring.
9.INSTALL WATER PUMP ASSY
(a)Place a new O±ring on the timing chain cover.
(b)Install the water pump with the 6 bolts.Torque:
9.0 N
m (92 kgf
cm, 80 in
lbf) for Bolt A
11 N
m (113 kgf
cm, 8 ft
lbf) for Bolt B
10.INSTALL GENERATOR ASSY (See page 19±7)
11.ADD ENGINE COOLANT (See page 16±7)
12.CHECK FOR ENGINE COOLANT LEAKS (See page 16±1)

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 N
m (130 kgf
cm, 9 ft
lbf) 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.

16±8
±
COOLING ENGINE COOLANT(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(d)Warm up the engine until the thermostat valve begins to open.
HINT:
Press the radiator inlet and outlet hose several times by hand during th\
e warming up.
(e)Stop the engine and wait until the coolant temperature gets cold. Then remov\
e the radiator cap to check the coolant level.

If the level gets lower, perform the procedures from (a) through (e) again.

If the level does not gets lower, fill the reservoir tank with engine coolant.
3.CHECK FOR ENGINE COOLANT LEAKS (See page 16±1)

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.