Downloaded from www.Manualslib.com manuals search engine 1F-7 Engine Cooling System:
Cooling System Flush and RefillS7RS0B1606005
WARNING!
To help avoid danger of being burned, do not
remove radiator cap while engine and
radiator are still hot. Scalding fluid and steam
can be blown out under pressure if cap is
taken off too soon.
NOTE
For detail of coolant specification, refer to
“Coolant Description”.
1) Remove radiator cap when engine is cool as follows.a) Turn cap counterclockwise slowly until it reaches a “stop” (Do not press down while turning it).
b) Wait until pressure is relieved (indicated by a hissing sound) then press down on cap and
continue to turn it counterclockwise.
2) With radiator cap removed, run engine until upper radiator hose is hot (this shows that thermostat is
open and coolant is flowing through system).
3) Stop engine and drain coolant from radiator drain plug (1).
4) Close radiator drain plug. Add water until system is filled and run engine until up per radiator hose is hot
again.
5) Repeat Steps 3) and 4) several times until drained liquid is nearly colorless.
6) Close radiator drain plug (1) tightly. 7) Remove reservoir (1) and remove cap (2) from
reservoir (1).
8) Pour out any fluid, scrub and clean inside of reservoir with soap and water.
Flush it well with clean water and drain, Reinstall
reservoir.
9) Fill reservoir with coolant up to “Full” level mark (3).
10) Install reservoir cap (2) on reservoir. 11) Fill radiator with coolant up to bottom of radiator filler neck and install radiator cap, making sure that the
ear of cap lines is parallel to radiator.
12) Run engine at idle speed.
13) Run engine until radiator fan motor is operated.
14) Stop engine and wait until engine comes cooled down to help avoid danger of being burned.
15) Add coolant to radiator up to bottom of radiator filler
neck, and install radiator ca p, making sure that the
ear of cap lines is parallel to radiator.
16) Repeat Step 12) through 15).
17) Confirm that reservoir cool ant level is “Full” level
mark (3). If coolant is insu fficient, repeat Step 9) and
10).
Cooling Water Pipes or Hoses Removal and
Installation
S7RS0B1606006
Removal
1) Drain coolant referring to “Cooling System Draining”.
2) To remove these pipes or hoses, loosen clamp on each hose and pull hose end off.
Installation
Install removed parts in reverse order of removal
procedure, noting the following.
• Tighten each clamp securely referring to “Cooling System Components”.
• Refill cooling system referrin g to Step 7) to 22) of
“Cooling System Flush and Refill”.
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Downloaded from www.Manualslib.com manuals search engine Engine Cooling System: 1F-10
Radiator Cooling Fan Removal and InstallationS7RS0B1606011
Removal1) Disconnect negative (–) cable at battery.
2) Disconnect connector (1) of cooling fan motor.
3) Drain coolant.
4) Remove front bumper, front bumper upper absorber and upper member referring to “Front Bumper and
Rear Bumper Componen ts in Section 9K”.
5) Remove radiator inlet hose and reservoir hose.
6) Remove cooling fan mounting bolts (1).
7) Slide condenser with radiator, and then remove radiator cooling fan.
CAUTION!
Be sure not to damage condenser outlet pipe.
Installation
Reverse removal procedure for installation noting the
following.
• Refill cooling system referring to Step 7) to 22) of “Cooling System Fl ush and Refill”.
• After installation, verify there is no coolant leakage at each connection.
Radiator On-Vehicle Inspection and CleaningS7RS0B1606012
Inspection
Check radiator for leakage or damage. Straighten bent
fins, if any.
Cleaning
Clean frontal area of radiator cores.
Radiator Removal and InstallationS7RS0B1606013
Removal
1) Disconnect negative cable at battery.
2) Drain A/T fluid.
3) Drain coolant.
4) Remove cooling fan assemb ly referring to “Radiator
Cooling Fan Removal and Installation”.
5) Remove A/T fluid cooler inlet and outlet hoses.
6) Remove radiator outlet hose from radiator.
7) Remove radiator from vehicle.
Installation
Reverse removal procedures, noting the following.
• Refill cooling system referrin g to Step 7) to 22) of
“Cooling System Flush and Refill”.
• After installation, verify there is no coolant leakage each connection.
• Refill A/T fluid referring to “A/T Fluid Change in
Section 5A”.
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Downloaded from www.Manualslib.com manuals search engine 1K-3 Exhaust System:
Exhaust Manifold Removal and InstallationS7RS0B1B06002
Removal
WARNING!
To avoid danger of being burned, do not
service exhaust system while it is still hot.
Service should be performed after system
cools down.
1) Disconnect negative cable at battery.
2) Remove engine cover.
3) Remove front bumper with front grille referring to
“Front Bumper and Rear Bumper Components in
Section 9K”.
4) Remove radiator referring to “Radiator Removal and Installation in Section 1F ” for equipped with A/C.
5) With hose connected, detach A/C condenser from vehicle body for equipped with A/C.
6) Remove exhaust manifold cover from exhaust manifold.
7) Disconnect heated oxygen sensor No.2 connector (1) (connector color: green) and heated oxygen
sensor No.1 connector (2) (connector color: black),
and then detach it from its stay.
8) Remove exhaust manifold stiffener (1).
9) Remove heated oxygen sensors (3) from exhaust manifold and exhaust No.1 pipe, if necessary.
10) Disconnect exhaust No.1 pipe (2) from exhaust manifold. 11) Remove exhaust manifold (1) and its gasket from
cylinder head.
Installation 1) Install new gasket to cylinder head. Then install exhaust manifold (3).
Tighten manifold bolts (1) and nuts (2) to specified
torque.
Tightening torque
Exhaust manifold bolt (a): 50 N·m (5.0 kgf-m,
36.5 lb-ft)
Exhaust manifold nut (b): 50 N·m (5.0 kgf-m,
36.5 lb-ft)
NOTE
Be sure to install exhaust manifold bolts and
nuts to proper location referring to “Exhaust
System Components”.
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Downloaded from www.Manualslib.com manuals search engine 7A-4 Heater and Ventilation:
Repair Instructions
HVAC Unit ComponentsS7RS0B7106001
For manual type A/C, refer to “HVAC Unit Components
in Section 7B”.
For automatic type A/C, refer to “HVAC Unit
Components in Section 7B”.
HVAC Unit Removal and InstallationS7RS0B7106002
Removal
1) Disconnect negative (–) cable from battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Remove cowl top panel from vehicle body referring to “Cowl Top Components in Section 9K”.
4) Drain engine coolant, and then disconnect heater hoses (1) from HVAC unit (2).
5) Remove instrument panel from vehicle body referring to “Instrument Panel Removal and
Installation in Section 9C”.
6) Remove nuts (3).
7) Remove HVAC unit from vehicle body.
Installation
Reverse removal procedure noting the following
instructions.
• Be careful not to catch any cable and wiring harness in inappropriate position.
• Adjust control cables of HVAC control unit referring to “HVAC Control Unit Remo val and Installation”.
• Fill engine coolant to radiator.
• Enable air bag system referring to “Enabling Air Bag System in Section 8B”.
Blower Motor Removal and InstallationS7RS0B7106003
Removal
1) Disconnect negative (–) cable from battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Disconnect connector (1) from blower motor (2).
4) Remove blower motor from HVAC unit by removing screws (3).
Installation
Reverse removal procedure noting the following
instruction.
• Enable air bag system referring to “Enabling Air Bag System in Section 8B”.
Blower Motor InspectionS7RS0B7106004
• Check for continuity between two terminals as shown. If there is no continuity, replace blower motor.
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Downloaded from www.Manualslib.com manuals search engine 7B-4 Air Conditioning System: Manual Type
Sub-Cool A/C System DescriptionS7RS0B7211003
In the sub-cool A/C system (condenser integrated with receiver/dryer), the inside of the condenser is divided into the
condensation part and the sub-cooler part, and the receiver/dryer is located between those. In the receiver/dryer, the
refrigerant is separated into the vapor refrigerant and the liqui d refrigerant. Only the liquid refrigerant is delivered to the
sub-cooler part of the condenser. The refrigerant is supercooled by the sub-cooler part of the condenser.
A/C Operation DescriptionS7RS0B7211004
ECM controls the radiator fan relay and the compressor relay by following signals.
• ON/OFF signal of A/C switch
• A/C refrigerant pressure sensor
• Evaporator thermistor (evaporator temperature sensor)
• ECT sensor
NOTE
The signal of A/C swit ch is fed from BCM to ECM usin g CAN communication system. For CAN
communication system, refer to “CAN Communication System Description in Section 1A”.
I7RS0A721001-01
[A]: Liquid 2. Magnet clutch 6. Expansion valve10. Desiccant
[B]: Vapor 3. Condenser 7. A/C evaporator11. Filter
[C]: Superheated vapor 4. Receiver/dryer (Modulator) 8. Condensation part12. Vapor refrigerant
1. Compressor 5. Refrigerant pressure sensor 9. Sub-cooler part 13. Liquid refrigerant
Downloaded from www.Manualslib.com manuals search engine 7B-10 Air Conditioning System: Manual Type
Abnormal Noise from Tension Pulley
Abnormal Noise from A/C Evaporator
Abnormal Noise from Blower Motor
A/C System Performance InspectionS7RS0B7214003
1) Confirm that vehicle and environmental conditions are as follows.
• Vehicle is put indoors.
• Ambient temperature is within 25 – 35 °C (77 – 95
° F).
• Relative humidity is within 30 – 70%.
• There is no wind indoors.
• HVAC unit is normal.
• Blower motor is normal.
• There is no air leakage from air ducts.
• Condenser fins are clean.
• Air filter in HVAC unit is not clogged with dirt and
dust.
• Battery voltage is about 12 V.
• Radiator cooling fan operates normally.
2) Make sure that high pressure valve (1) and low pressure valve (2) of manifold gauge are firmly
closed.
3) Connect high pressure charging hose (3) to high pressure service valve (5) on vehicle and low
pressure charging hose (4) to low pressure service
valve (6).
4) Bleed the air in charging hoses (3) and (4) by loosening their nuts respectively utilizing the
refrigerant pressure. When a hissing sound is heard,
immediately tighten nut.
CAUTION!
Do not connect high and low pressure
charging hoses in reverse.
Condition Possible cause Correction / Reference Item
Clattering noise is heard
from pulley Worn or damaged bearing
Replace tension pulley.
Pulley cranks upon
contact Cracked or loose bracket
Replace or retighten bracket.
ConditionPossible cause Correction / Reference Item
Whistling sound is heard
from A/C evaporator Depending on the combination of the
interior / exterior temperatures, engine
rpm and refrigerant pressure, the
refrigerant flowing out of the expansion
valve may, under certain conditions,
make a whistling sound At times, slightly decrea
sing refrigerant volume
may stop this noise.
Inspect expansion valve and replace if faulty.
Condition Possible cause Correction / Reference Item
Blower motor emits a
chirping sound in
proportion to its speed of
rotation Worn or damaged motor brushes or
commutator
Replace blower motor.
Fluttering noise or large
droning noise is heard
from blower motor Leaves or other debris introduced from
fresh air inlet to blower motor
Remove debris and make sure that the screen
at fresh air inlet is intact.
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