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Engine mechanism - Timing chain assembly41. Install alternator mounting components.Torque: 12mm bolt head: 14mm bolt head: m42. Refill coolant.
43. Check there is coolant leakage.
44. Check there is oil leakage.
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Cooling - Cooling syste2. Check engine coolant level in reservoir.Engine coolant level should be between “Low” and “Full” mark line.
Hint: if the level is too low, check there is leakage and refill coolant to “Full” mark line.3. Check engine coolant quality.(a) Remove radiator cap.
Warning: when the temperature of engine and radiator is high, do not remove radiator cap to
avoid being scalded, because coolant and steam will spurt under high pressure.
(b) Check there is too much rust deposit around radiator cap or at outlet and check there is flake; there
should not be oil in the coolant.
Hint: if coolant is too dirty, it is required to replace coolant.
(c) Install back radiator cap.Inspection1. Temperature regulatorHint: the figure on temperature regulator is the
opening temperature of valve.CoolingCooling systemOn-vehicle inspection1. Check there is leakage with cooling system.Warning: when the temperature of engine and radiator is
high, do not remove radiator cap to avoid be-
ing scalded, because coolant and steam will
spurt under high pressure.
(a) Refill coolant to radiator, and install radiator cap tester.
(b) Preheat engine.
(c) Pump tester to make pressure go up to 118KPa, and check
the pressure falls.
Hint: if the pressure falls, check there is leakage with
hose, radiator or water pump, and check heater,
cylinder body and cylinder head if no external leak-
age is found.66
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Cooling - Cooling systeTemperatureDegree of valve opening(a) Immerse temperature regulator into water and heat
gradually.
(b) Check opening temperature of valve.
Opening temperature of valve: 8084Hint: if opening temperature of valve is not within
specified range, it is required to replace tempera-
ture regulator.
(c) Check opening of valve.
Opening of valve:2. Radiator cap assemblyNotes:If radiator is dirty, wash it with clean water.Before using radiator cap tester, dampen relief valve
and pressure valve with coolant or water.
(a) Use radiator cap tester to slowly pump radiator cap
tester, and check the air is released by vacuum valve.
Pumping speed: 1 time /(3 seconds or more)
Note: pump radiator tester with constant speed.
Hints:Pumping speed: 1 time /(3 seconds or more)If air could not be released by vacuum valve,
please replace radiator cap.
(b) Pump tester and check opening pressure of relief valve.
Standard opening pressure: 74-108KPa
Min. opening pressure: 59KPa
Note: pumping speed means that the speed could be increased after the first time pumping
speed (to close vacuum valve).
Hints:Pumping speed: 1 time within 1 secondMax. reading of tester is opening pressure.If opening pressure is less than min. value, please replace radiator cap. Hint: if degree of valve opening is not within speci-
fied range, it is required to replace tempera-
ture regulator.
(a) When temperature regulator is at low temperature (below), check valve is tightly closed.
Hint: if the valve could not be closed, it is required to
replace temperature regulator.67
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Cooling - Cooling fan systemCooling fan systemOn-vehicle inspection1. Check cooling fan function at low temperature (below 95).(a) Turn ignition switch to ON.
(b) Check cooling fan is stopped.
Hint: if it is not stopped, check cooling fan relay and water temperature sensor, or check the
joint or wire harness between them.
(c) Uncouple water temperature sensor joint.
(d) Check cooling fan runs.
If it does not run, check fuse, cooling fan relay, engine ECU and cooling fan, or check there is short
circuit between them.
(e) Connect back water temperature sensor joint.2. Check cooling fan function at high temperature (above 95).(a) Start engine and increase coolant temperature up to above Hint: water temperature is the value measured by water temperature sensor on water outlet.
(d) Check cooling fan runs.
Hint: if it does not run, please replace water temperature sensor.3. Check cooling fan.(a) Uncouple cooling fan joint.
(b) Connect battery and ampere meter to cooling fan joint.
(c) Check cooling fan runs normally and check ampere meter reading.Standard current: 712A
(d) Connect back cooling fan joint.Inspection1. Electronic fan relay [67000064]
2. Electronic fan relay II [67000072]
3. Cooling fan speed adjusting resistance assembly
[67000001]Measure resistance between terminals with ohmmeter.
Resistance: at normal temperature: 1.368 Specified
conditions
Normal stateConductionConductionTerminal connected
by three-use meter Conditions
Supply battery voltage
to No. 1 and No. 2
terminals
Specified
conditions
Normal stateConductionConductionTerminal connected
by three-use meter Conditions
Supply battery voltage
to No. 1 and No. 2
terminals
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Cooling - Water pump assemblyWater pump assemblyReplacement1. Remove engine right bottom shield.
2. Discharge engine coolant.
3. Remove drive belt.Slowly turn drive belt tensioner clockwise to loosen the belt;
then remove drive belt and put back drive belt tensioner slowly
to completely loosen the tensioner.4. Remove alternator assembly.(a) Remove rubber cover and nuts.
(b) Uncouple alternator joint.
(c) Remove 2 bolts and alternator.5. Remove water pump assembly.Remove 6 bolts, water pump and o-ring.69
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Cooling - Water pump assembly6. Install water pump assembly.(a) Install new o-ring on water pump.
(b) Install water pump with 6 bolts.
Torque: bolt A: Bolt B: 7. Install alternator mounting components.Torque: 12mm bolt head: 14mm bolt head: 8. Refill engine coolant.
9. Check there is leakage with coolant.
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Page 82 of 419
Cooling - Temperature regulator componentsReplacement1. Remove engine right bottom shield.
2. Discharge engine coolant.
3. Remove drive belt.Slowly turn drive belt tensioner clockwise to loosen the belt;
then remove drive belt and put back the tensioner slowly to
completely loosen it.4. Remove alternator components.(a) Remove rubber cover and nuts.
(b) Uncouple alternator joint.
(c) Remove 2 bolts and alternator.5. Remove water inlet pipe.
6. Remove temperature regulator.
7. Install temperature regulator.(a) Install new gasket to temperature regulator.
(b) As shown in the diagram, install temperature regulator with
inching valve toward upward.8. Install water inlet pipe and joint.Torque: 9. Install alternator installation components.Torque: 12mm bolt head: m
14mm bolt head: 10. Refill engine coolant.
11. Check there is leakage with coolant.
71Temperature regulator components
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Cooling - Radiator with electronic fan assemblyRadiator with electronic fan assemblyReplacement1. Discharge coolant (see Page 73).
2. Disassemble radiator water inlet hose [64000062].
3. Disassemble radiator water outlet hose [64000063].
4. Disassemble No.1 oil cooler inlet pipe (auto gear).
5. Disassemble No.1 oil cooler outlet pipe (auto gear).
6. Disassemble fixing clips of 2 wire harnesses from fan cover.
7. Remove mounting bracket assembly on radiator [64000058].
8. Remove radiator together with electronic fan assembly [64000057].
9. Remove electronic fan together with fan cover assembly [64000060].(a) Screw off fixed nuts connecting electronic fan together with fan cover assembly with radiator.
(b) Uncouple fan motor joint.
(c) Remove 2 bolts of fan.
(d) Remove fan motor at the same time.10. Replace and install as sequences opposite to the above.
11. Refill engine coolant (see Page 73).
12. Check there is leakage with coolant (see Page 66).
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