Downloaded from www.Manualslib.com manuals search engine Heater and Ventilation: 7A-5
• Check for operation and current.a. Put blower motor (1) in a soft-jawed vise.
b. Connect battery to blower motor as shown.
c. Check if blower motor operates smoothly without noise.
d. Check if ammeter indicates the specified current. If measured current is out of specification, replace
blower motor.
Blower motor specified current at 12 V
16 A maximum
Blower Motor Resistor Removal and InstallationS7RS0B7106005
Removal
1) Disconnect negative (–) cable from battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Remove glove box from instrument panel.
4) Remove bolts (1) from instrument panel.
5) Remove foot duct (1) from HVAC unit by removing screw (2). 6) Remove connector (1) from blower motor resistor
(2), and then remove blower motor resistor 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 Resistor InspectionS7RS0B7106006
Measure each terminal-to-terminal resistance. If
measured resistance is out of specification, replace
blower motor resistor.
Blower motor resistor resistance
“H” – “MH”: Approximately 0.6 Ω at 20 – 25 °C (68 –
77 °F)
“MH” – “ML”: Approximately 1.6 Ω at 20 – 25 °C (68 –
77 °F)
“ML” – “L”: Approximately 3.4 Ω at 20 – 25 °C (68 –
77 °F)
1
I4RS0A710007-01
11I4RS0B710006-01
12I4RS0B710007-01
1
3
23
I4RS0A710010-01
MHL
HMLI4RS0B710024-01
Downloaded from www.Manualslib.com manuals search engine 7A-6 Heater and Ventilation:
Blower Motor Relay InspectionS7RS0B7106007
1) Remove junction block assembly referring to “BCM (Included in Junction Block Assembly) Removal and
Installation in Section 10B”.
2) Disconnect blower motor relay (1) from junction block assembly (2).
3) Check that there is no continuity between terminal “C” and “D”. If there is continuity, replace relay.
4) Connect battery positive (+ ) terminal to terminal “B”
of relay. Connect battery negative (–) terminal “A” of
relay.
Check continuity between terminal “C” and “D”.
If there is no continuity wh en relay is connected to
the battery, replace relay.
HVAC Control Unit ComponentsS7RS0B7106008
“D”
“B” “A”
“C”
1
2
I4RS0B710008-01
45
61
7
10
9
238
I4RS0B710009-01
1. Heater control body assembly 4. Bulb 7. Air intake selector10. Rear defogger switch (if equipped)
2. Air flow selector 5. Temperature control cable 8. Temperature selector
3. Blower speed selector 6. Air flow control cable9. A/C switch (if equipped)
Downloaded from www.Manualslib.com manuals search engine Heater and Ventilation: 7A-7
HVAC Control Unit Removal and InstallationS7RS0B7106009
Removal1) Disconnect negative (–) cable at battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Remove passenger air bag module from instrument panel referring to “Passenger Air Bag (Inflator)
Module Removal and Installation in Section 8B”.
4) Remove radio assembly from instrument panel referring to “Audio Unit Re moval and Installation in
Section 9C”.
5) Remove driver side foot duct (1) from HVAC unit by removing screw (2).
6) Disconnect temperature control cable (1) and air flow control cable (2) from HVAC unit. 7) Remove two connectors from HVAC control unit.
8) Remove HVAC control unit (1) from instrument
panel.
NOTE
Be careful not to damage HVAC control unit
and instrument panel by using rag.
Installation
Reverse removal procedure noting the following
instructions.
• Connect temperature control cable and air flow control
cable of HVAC control unit to links of HVAC unit.
a. For LH steering vehicle, set air flow selector (1) to “DEF” position and temperature selector (2) to
“MAX HOT” position.
For RH steering vehicle, set air flow selector (1) to
“VENT” position and temperature selector (2) to
“MAX COOL” position.
[A]: LH steering vehicle [B]: RH steering vehicle
2
1
I4RS0B710010-01
2
1
1
2
[B] [A]
I4RS0B710011-01
1
I4RS0B710012-01
12I4RS0B710013-01
12I4RS0A710016-01
Downloaded from www.Manualslib.com manuals search engine 7A-10 Heater and Ventilation:
Air Intake Control Actuator InspectionS7RS0B7106013
Check air intake control actuator as follows:1) Using service wire, connect battery positive terminal to “a” terminal and battery negative terminal to
terminal “b”. And, check if air intake selector link
operates smoothly and it st ops at fresh position (1).
2) Using service wire, connect battery positive terminal to “a” terminal and battery negative terminal to
terminal “c”. And, check if air intake selector link
operates smoothly and it stops at recirculation
position (2).
If malfunction is found, replace air intake control
actuator.
Center Ventilation Louver Removal and
Installation
S7RS0B7106014
Removal
1) Disconnect negative (–) cable from battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Remove passenger air bag module from instrument panel referring to “Passenger Air Bag (Inflator)
Module Removal and Installation in Section 8B”.
4) Remove radio assembly from instrument panel referring to “Audio Unit Re moval and Installation in
Section 9C”.
5) Remove center ventilation louver (1) with garnish (2) from instrument panel, and then disconnect
connector from hazard switch.
NOTE
Garnish is fitted to in strument panel with six
clips. When removing garnish from
instrument panel, be careful not to break
them.
6) Separate center ventilation louver and garnish.
Installation
Reverse removal procedure.
a
b
c
1
2
I4RS0A710023-01
1
2
I4RS0B710017-01
Downloaded from www.Manualslib.com manuals search engine Heater and Ventilation: 7A-11
Side Ventilation Louver Removal and
Installation
S7RS0B7106015
Driver side ventilation louver
Removal1) Disconnect negative (–) cable from battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Remove steering column hol e cover from instrument
panel.
4) Remove combination meter cluster panel from instrument panel, and then disconnect connectors
from front fog lamp switch, illumination cancel switch
and headlight leveling switch (if equipped) of
combination meter cluster panel.
5) Separate driver side ventilation louver (1) and combination meter cluster (2).
Installation
Reverse removal procedure noting the following
instruction.
• Driver side ventilation louver is fitted to combination meter cluster panel with four clips (1). When installing
driver side ventilation louv er to combination meter
cluster panel, position the smallest clip to the top. Passenger side ventilation louver
Removal
1) Disconnect negative (–) cable from battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Remove glove box from instrument panel.
4) Remove passenger air bag module from instrument panel referring to “Passenger Air Bag (Inflator)
Module Removal and Installation in Section 8B”.
5) Separate passenger side ventilation louver (1) and passenger air bag module (2).
Installation
Reverse removal procedure noting the following
instruction.
• Passenger side ventilation louver is fitted to passenger air bag module with four clips (1). When
installing passenger side ventilation louver to
passenger air bag module, position the smallest clip
to the top.
2
1
I4RS0B710018-01
1
I4RS0B710019-01
2
1
I4RS0B710020-01
1I4RS0B710021-01
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.
53
2
1
4 6
I4RS0A720006-01
Downloaded from www.Manualslib.com manuals search engine 7B-24 Air Conditioning System: Manual Type
HVAC Unit Removal and InstallationS7RS0B7216006
Removal1) Disconnect negative (–) cable from battery.
2) Disable air bag system referring to “Disabling Air Bag System in Section 8B”.
3) Recover refrigerant from A/C system with recovery and recycling equipment referring to “Recovery” in
“Operation Procedure for Refrigerant Charge”.
4) Remove cowl top panel referring to “Cowl Top Components in Section 9K”.
5) Drain engine coolant, and then disconnect heater hoses (1) from HVAC unit (2).
6) Remove instrument panel from vehicle body referring to “Audio Unit Re moval and Installation in
Section 9C”.
7) Loosen suction hose and liquid pipe bolt (4).
8) Remove nuts (3).
9) Remove HVAC unit from vehicle body. Installation
Reverse removal procedure noting the following
instructions.
• Replenish specified amount of compressor oil to
compressor suction side referring to “Replenishing
Compressor Oil” in “Operation Procedure for
Refrigerant Charge”.
• Install the padding (1) to the installation hole uniformly.
• Evacuate and charge the A/C system referring to “Evacuation” and “Charge” in “Operation Procedure
for Refrigerant Charge”.
• Adjust control cables referr ing to “HVAC Control Unit
Removal and Installati on in Section 7A”.
• Enable air bag system referring to “Enabling Air Bag System in Section 8B”.
Evaporator InspectionS7RS0B7216007
Check the followings.
• Clog of A/C evaporator fins.If any clogs are found, A/C evaporator fins should be
washed with water, and then should be dried with
compressed air.
• A/C evaporator fins for leakage and breakage. If any defects are found, repair or replace A/C
evaporator.
• A/C evaporator fittings for leakage. If any defects are found, repair or replace A/C
evaporator.
2. Blower upper case 8. Temperature control door assembly 14. Temperature control lever 20. Packing
3. Air intake control actuator 9. Blower motor resistor 15. Airflow control lever21. Filter cover (if equipped)
4. HVAC Air filter (if equipped) 10. Blower lower case 16. Evaporator22. Drain hose
5. Heater unit upper case 11. Blower motor 17. O-ring23. Cable lock clamp
6. Foot duct 12. Heater unit lower case 18. Expansion valve: Do not reuse.
3
2
3
3
1
4
I4RS0B720009-01
1
I4RS0B720010-01
Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-25
Evaporator Thermistor (Evaporator
Temperature Sensor) Removal and Installation
S7RS0B7216008
Removal1) Disconnect negative (–) cable from battery.
2) Remove HVAC unit from vehicle body referring to “HVAC Unit Removal and Installation”.
3) Remove evaporator thermistor (evaporator temperature sensor) (1) from evaporator by
disassembling HVAC unit.
Installation
Reverse the removal procedure noting the following
instruction.
• Install evaporator thermistor (evaporator temperature sensor) (1) onto evaporator (2) as shown.
Evaporator Thermistor (Evaporator
Temperature Sensor) Inspection
S7RS0B7216009
Check resistance between terminals of evaporator
thermistor (1).
If check results are as not specified, replace evaporator
thermistor.
Evaporator thermistor resistance
0 °C (32 °F): 6.6 – 6.9 k Ω
25 °C (77 °F): 1.9 – 2.3 kΩ
[A]: LH steering vehicle
[B]: RH steering vehicle
3. 50 ± 5 mm (2 ± 0.2 in.)
4. Sensor part fixed to 10th fin from the bottom
5. Holding part fixed to 8th fin from the bottom
6. Holding part fixed to 12th fin from the bottom
1
I4RS0B720011-01
5
1
4
2
3
[A]
1
4 2
3
6 [B]
I5RS0C721008-01
[A]: Resistance (k Ω) [B]: Temperature
I4RS0B720012-01