climate control ACURA CSX 2006 Service Manual PDF


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21-7521-75
Climate Control Unit Removal/
Installation Dust and Pollen Filter Replacement
B
A A
A
B
1. Remove the center panel:  ’06-08 models with navigation (see page 23-155)
 ’06-08 models without navigation (see page23-80)
 ’09 model with navigation (see page 23-355)
 ’09 model without navigation (see page 23- 256)
2. Remove the dials (A), the self-tapping screws, and the climate control unit (B).
3. Install the control unit in the reverse order of removal. After installation, operate the various
functions to see whether works properly.
4. Run the self-diagnostic function to confirm that there are no problems in the system (see page
21-11). 1. Open the glove box. Remove the glove box stop on
each side, then let the glove box hang down
(see page 20-104).
2. Remove the dust and pollen filter assembly (A) from the evaporator.
3. Remove the filter (A) from the housing (B), and replace the filter.
4. Install the filter in the reverse order of removal. Make sure that there is no air leaking out of the
evaporator.
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21-76 Climate Control
Blower Unit Removal/Installation
A
A A
B
B A
1. Remove the glove box (see page 20-104).
2. Cut the plastic cross brace (A) in the glove box
opening with diagonal cutters in the area shown,
and discard it.
3. Remove the bolts and the glove box frame (A). 4. Remove the wire harness clip (A), the self-tapping
screws, and the passenger’s heater duct (B).
5. Disconnect the connector (A) from the blower motor. Remove the wire harness clip (B).
Cut here.
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21-78 Climate Control
Evaporator Core Replacement
A
6x1.0mm
9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)
6x1.0mm
9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)
A B
C
D
6x1.0mm
9.8 N·m
(1.0 kgf·m, 7.2 lbf·ft) A
1. Recover the refrigerant with a recovery/recycling/
charging station (see page 21-90).
2. Disconnect the clamp (A), then remove the bolt.
3. Remove the nut, then disconnect the A/C lines (A) from the evaporator core. 4. Remove the stud bolt.
5. Remove the blower unit (see page 21-76).
6. Disconnect the connectors (A) from the evaporator
temperature sensor and the power transistor, then
remove the connector clip (B). Remove the
self-tapping screws, the expansion valve cover (C),
and the seal (D).
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21-80Climate Control
Expansion Valve Replacement
A
5x0.8mm
3.2 N·m
(0.33 kgf·m,
2.4 lbf·ft)
B
1. Remove the evaporator core (see page 21-78).
2. Remove the bolts (A) and expansion valve (B).
3. Install the expansion valve in the reverse order of
removal and note these items:
 If you’re installing a new expansion valve, add refrigerant oil (SP-10) (see page 21-7).
 Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before
installing them. Be sure to use the correct O-rings
for HFC-134a (R-134a) to avoid leakage.
 Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture
absorption.
 Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil
contacts the paint, wash it off immediately.
 Make sure that there is no air leakage.
 Charge the system (see page 21-92).
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21-82Climate Control
Heater Unit/Core Replacement (cont’d)
A
A
B B
C D
A
6x1.0mm
9.8 N·m
(1.0 kgf·m, 7.2 lbf·ft)A
9. Disconnect the connector (A) from the recirculation
control motor.
10. Disconnect the connectors (A) from the mode control motor, the evaporator temperature sensor,
and the power transistor. Remove the wire harness
clip (B). 11. Disconnect the connectors (A) from the air mix
control motor and A/C wire harness. Remove the
connector clip (B), the wire harness clips (C), and
the wire harness (D).
12. Remove the mounting bolt, mounting nuts, and blower-heater unit (A).
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21-84Climate Control
A/C Compressor Replacement (cont’d)
8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
A
7. Remove the mounting bolts and the A/C
compressor (A). Be careful not to damage the
radiator fins when removing the A/C compressor. 8. Install the compressor in the reverse order of
removal, and note these items:
 Inspect the A/C lines for any signs of contamination.
 If you’re installing a new A/C compressor, you must calculate the amount of refrigerant oil to be
removed from it (see page 21-7). A new A/C
compressor comes with a full charge of oil.
 Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before
installing them. Be sure to use the correct O-rings
for HFC-134a (R-134a) to avoid leakage.
 Use refrigerant oil (SP-10) for HFC-134a SANDEN spiral type A/C compressor only.
 To avoid contamination, do not return the oil to the container once dispensed, and never mix it
with other refrigerant oils.
 Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture
absorption.
 Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil
contacts the paint, wash it off immediately.
 Charge the system (see page 21-92).
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Special Tools Required
21-86
Climate Control
A/C Compressor Clutch Overhaul
25.5 N·m
(2.6 kgf·m, 18.8 lbf·ft)
A
B A
B
A
B A
B
C
D 1.3 N·m
(0.1 kgf·m, 1.0 lbf·ft)
A/C clutch holder, Robinair 10204 or Kent-Moore
J37872, or Honda Tool and Equipment KMT- J33939,
commercially available
1. Remove the center nut while holding the armature plate (A) with a commercially available A/C clutch
holder (B).
2. Remove the armature plate (A) and shim(s) (B), taking care not to lose the shim(s). If the clutch
needs adjustment, increase or decrease the
number and thickness of shims as necessary, then
reinstall the armature plate, and recheck its
clearance (see page 21-85).
NOTE: The shims are available in four thicknesses:
0.1 mm, 0.2 mm, 0.4 mm, and 0.5 mm. 3. If you are replacing the field coil, remove the snap
ring (A) with snap ring pliers, then remove the rotor
pulley (B). Be careful not to damage the rotor pulley
and A/C compressor.
4. Remove the bolt and holder (A), then disconnect the field coil connector (B). Remove the snap ring
(C)withsnapringpliers,thenremovethefieldcoil
(D). Be careful not to damage the field coil and A/C
compressor.
5. Reassemble the clutch in the reverse order of disassembly, and note these items:
 Install the field coil with the wire side facing down, and align the boss on the field coil with the
hole in the A/C compressor.
 Clean the rotor pulley and A/C compressor sliding surfaces with contact cleaner or other
non-petroleum solvent.
 Install new snap rings, note the installation direction, and make sure they are fully seated in
the groove.
 Make sure that the rotor pulley turns smoothly after it’s reassembled.
 Route and clamp the wires properly or they can be damaged by the rotor pulley.
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21-88 Climate Control
A/C Condenser Replacement
6x1.0mm
9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)
A
6x1.0mm
9.8 N·m (1.0 kgf·m, 7.2 lbf·ft) A 6x1.0mm
9.8 N·m
(1.0 kgf·m, 7.2 lbf·ft)
A
A
B CD
1. Recover the refrigerant with a recovery/recycling/
charging station (see page 21-90).
2. Remove the front grille:  ’06-08 models (see page 20-160)
 ’09 model (see page 20-161)
3. Remove the bolts, then disconnect the discharge hose (A) from the A/C condenser.
4. Remove the bolt, then disconnect the receiver line (A) from the A/C condenser. 5. Remove the bolts and the A/C condenser upper
mount brackets (A).
6. Lift the tab (A) to release the lock, then remove the outside air temperature sensor (B) from the bracket.
Disconnect the 2P connector (C), then remove the
clip (D).
7. Remove the hood latch (see page 20-181).
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21-90Climate Control
Refrigerant Recovery
A
C B
 Air conditioning refrigerant or lubricant vaporcan irritate your eyes, nose, or throat.
 Be careful when connecting service equipment.
 Do not breathe refrigerant or vapor.
NOTE:  If accidental system discharge occurs, ventilate the work area before resuming service.
 Additional health and safety information may be obtained from the refrigerant and lubricant
manufacturers.
1. Connect an R-134a refrigerant recovery/recycling/ charging station (A) to the high-pressure service
port (B) and the low-pressure service port (C), as
shown, following the equipment manufacturer’s
instructions. 2. Measure the amount of refrigerant oil removed
from the A/C system after the recovery process is
completed. Be sure to put the same amount of new
refrigerant oil back into the A/C system before
charging.
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µ
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 )Refrigerant Capacity:
400 to 450 g
0.40 to 0.45 kg
0.9 to 1.0 lbs
14.1 to 15.9 oz
21-92
Climate Control
System Charging
A
C B
 Air conditioning refrigerant or lubricant vaporcan irritate your eyes, nose, or throat.
 Be careful when connecting service equipment.
 Do not breathe refrigerant or vapor.
NOTE:  If accidental system discharge occurs, ventilate the work area before resuming service.
 Additional health and safety information may be obtained from the refrigerant and lubricant
manufacturers.
1. Connect an R-134a refrigerant recovery/recycling/ charging station (A) to the high-pressure service
port (B) and the low-pressure service port (C), as
shown, following the equipment manufacturer’s
instructions. 2. Recover the refrigerant in the A/C system (see page
21-90).
3. Evacuate the system (see page 21-91). If the system cannot reach a vacuum of 93.3 kPa (700 mmHg,
27.6 in.Hg) in 15 minutes, or cannot hold a vacuum
for at least 15 minutes, there is probably a leak. Do
the Refrigerant Leak Check (see page 21-93), and
repair any leaks before charging the system.
4. Add the same amount of new refrigerant oil to the system that was removed during recovery. Use
only SP-10 refrigerant oil.
5. Charge the system with the specified amount of R-134a refrigerant. Do not overcharge the system;
the A/C compressor will be damaged.
Select the appropriate units of measure for your
refrigerant charging station.
6. Check for refrigerant leaks (see page 21-93).
7. Check the system performance (see page 21-99).
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