vent ACURA CSX 2006 Service Repair Manual

Î
Î
(#'

 )
20-14420-144 Seats
Rear Seat Cushion Cover
Replacement (cont’d)
Rear Seat Armrest Cover
Replacement
D
B
C
A
A
B C
4. Install the cover in the reverse order of removal,
and note these items:
 To prevent wrinkles when installing a seat cushion cover, make sure the material is
stretched evenly over the pad before securing
the retainers and upholstery rings.
 Replace all of the upholstery rings (A) fastening the seat-back cover (B) and the pad wire (C) with
new ones using commercially available
upholstery ring pliers (D). NOTE: Take care not to tear or damage the seat covers.
1. Remove the armrest from the seat-back (see page 20-138).
2. Remove the armrest beverage holder from the armrest (see page 20-137).
3. Release the clips (A) and the hook strip (B), and pull back the armrest cover (C) all the way around.
08/08/21 15:04:09 61SNR030_200_0146
ProCarManuals.com
DYNOMITE -2009-


20-145
AB A
4. Release the armrest cover from the armrest pivot
portions (A), then remove it from the pad (B).
5. Install the cover in the reverse order of removal. To prevent wrinkles when installing an armrest cover,
make sure the material is stretched evenly over the
pad before securing the clips and the hook strips.
08/08/21 15:04:09 61SNR030_200_0147
ProCarManuals.com
DYNOMITE -2009-

Î
(#'


 ) Î
(#'


 )

20-16320-163
Front Grille Cover Replacement Cowl Cover Replacement
A
B
C
D
D A
A
B
C
Fastener Locations
:Clip,3
A : Clip, 2 B
E EE
E
B
F F G
F
F F
C
H
D
D
H
I
Fastener Locations
: Clip, 3
C : Clip, 5 F:Clip,1G
(White) (Light Blue)
C C
A
D E F, GA
NOTE:
 When prying with a flat-tip screwdriver, wrap it with protective tape to prevent damage.
 Take care not to scratch the front bumper or the body.
1. Remove the front fender trim from both sides (see page 20-162).
2. Remove the clips (A, B) by carefully pulling the rear of the front grille cover (C) up, then remove the
cover by releasing the front edge of the cover from
the front grille (D). Take care not to scratch the
body.
NOTE: To release the clips, pry up on the center pin
at the notch (E).
3. Install the cover in the reverse order of removal, and note these items:
 If the clips are damaged or stress-whitened, replace them with new ones.
 Push the clip portions into place securely. NOTE: Take care not to scratch the body.
1. Turn the ignition switch to ON (II), then turn on the wiper switch. When the wiper arms reach about
90 °, quickly turn the ignition switch to LOCK (0).
2. Remove the center cowl cover (A). –1 Remove the hood rear seal (B) by pu lling it out.
–2 Remove the clips (C).
–3 Release three front hooks (D) from the edge of the under-cowl panel (E).
–4 Detach the clips (F, G) by carefully pulling the cover upward, then remove the cover by
releasing the hooks (H). Take care not to
scratch the body.
3. Disconnect the windshield washer tube (I). (cont’d)
08/08/21 15:05:01 61SNR030_200_0165
ProCarManuals.com
DYNOMITE -2009-

(#'

/)
HVAC (Heating, Ventilation, andAir Conditioning)
Climate Control
HVAC (Heating, Ventilation, and Air Conditioning)
...........................
...........................
Special Tools . 21-2
...
..........
...........
........................ ............
.......................... ...
..................................... ................
....................... .............
..................
..................
.................. ......
..................
..................
....................................... ........................
.......................... ...........
..............
........................
.......................... ...
..........
...........
........................ ............
.......................... ...
..................................... ................
....................... .............
..................
..................
.................. ......
..................
..................
....................................... ........................
.......................... ...........
..............
........................
..........................
Component Location Index . 21-3
A/C Service
Tips and Precautions . 21-6
A/C System Inspection . 21-6
A/C Refrigerant Oil Replacement . 21-7
A/C Line Replacement . 21-8
General Troubleshooting Information . 21-9
DTC Troubleshooting Index . 21-15
Symptom Troubleshooting Index . 21-16
System Description . 21-19
Circuit Diagram . 21-26
DTC Troubleshooting . 21-28
Climate Control Power and Ground Circuit
Troubleshooting . 21-53
Navigation Communication Line Circuit
Troubleshooting . 21-54
Radiator and A/C Condenser Fan Low Speed Circuit
Troubleshooting . 21-56
A/C Condenser Fan High Speed Circuit Troubleshooting . 21-60
A/C Compressor Clutch Circuit Troubleshooting . 21-62
A/C Signal Circuit Troubleshooting . 21-64
In-car Temperature Sensor Test . 21-67
In-car Temperature Sensor Replacement . 21-67
Outside Air Temperature Sensor Test . 21-68
Outside Air Temperature Sensor Replacement . 21-68
Sunlight Sensor Test . 21-69
Sunlight Sensor Replacement . 21-69
Evaporator Temperature Sensor Test . 21-70 ............
....
........................ .......
........................
....................................... ...................................
........................ ...........
........................
........................
........................
........................
........................
.................................... ..............................
........................
........................
........................
........................ ..............
.................
.................... ...................
...................... ............
....
........................ .......
........................
....................................... ...................................
........................ ...........
........................
........................
........................
........................
........................
.................................... ..............................
........................
........................
........................
........................ ..............
.................
.................... ...................
......................
Power Transistor Test . 21-71
Air Mix Control Motor Test . 21-72
Air Mix Control Motor
Replacement . 21-72
Mode Control Motor Test . 21-73
Mode Control Motor Replacement . 21-73
Recirculation Control Motor Test . 21-74
Recirculation Control Motor Replacement . 21-74
Climate Control Unit Removal/Installation . 21-75
Dust and Pollen Filter Replacement . 21-75
Blower Unit Removal/Installation . 21-76
Blower Unit Component Replacement . 21-77
Evaporator Core Replacement . 21-78
Expansion Valve Replacement . 21-80
Heater Unit/Core Replacement . 21-81
A/C Compressor Replacement . 21-83
A/C Compressor Clutch Check . 21-85
A/C Compressor Clutch Overhaul . 21-86
A/C Compressor Thermal Protector
Replacement . 21-87
A/C Compressor Relief Valve Replacement . 21-87
A/C Condenser Replacement . 21-88
Receiver/Dryer Desiccant Replacement . 21-89
Refrigerant Recovery . 21-90
System Evacuation . 21-91
System Charging . 21-92
Refrigerant Leak Check . 21-93
A/C System Noise Check . 21-97
A/C System Test . 21-99
08/08/21 14:40:45 61SNR030_210_0002
ProCarManuals.com
DYNOMITE -2009-


(#'

%)Ref. No. Tool Number Description Qty
21-2
HVAC (Heating, Ventilation, and Air Conditioning)
Special Tools
07SAZ-001000A
Backprobe Set 2
08/08/21 14:40:45 61SNR030_210_0003
ProCarManuals.com
DYNOMITE -2009-

(#'

)Î
Î
(#'

")
21-621-6 Climate Control
A/C Service Tips and Precautions A/C System Inspection
A
 Compressed air mixed with the R-134a forms a
combustible vapor.
 The vapor can burn or explode causing serious injury.
 Never use compressed air to pressure test R-134a service equipment or vehicle air
conditioning systems.
 Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
 Be careful when connecting service equipment.
 Do not breathe refrigerant or vapor.
The air conditioning system uses HFC- 134a (R-134a)
refrigerant and polyalkyleneglycol (PAG) refrigerant oil,
which are not compatible with CFC-12 (R-12) refrigerant
or mineral oil. Do not use R-12 refrigerant or mineral oil
in this system, and do not attempt to use R-12 servicing
equipment; damage to the air conditioning system or
your servicing equipment will result.
Use only service equipment that is U.L.-listed and is
certified to meet the requirements of SAE J2210 to
remove R-134a from the air conditioning system.
If accidental system discharge occurs, ventilate the
work area before resuming service.
R-134a service equipment or vehicle air c onditioning
systems should not be pressure tested or leak tested
with compressed air.
Additional health and safety information may be
obtained from the refrigerant and lubricant
manufacturers.
 Always disconnect the negative cable from the battery whenever replacing air conditioning parts.
 Keep moisture and dirt out of the system. When disconnecting any lines, plug or cap the fittings
immediately; don’t remove the caps or plugs until
just before you reconnect each line.
 Before connecting any hose or line, apply a few drops of refrigerant oil to the O-ring.
 When tightening or loosening a fitting, use a second wrench to support the matching fitting.
 When discharging the system, use an R-134a refrigerant recovery/recycling/charging station; don’t
release refrigerant into the atmosphere. Before troubleshooting any problem with the air
conditioning system, do the following:
1. With the ignition switch in LOCK (0), inspect the A/C components, the pressure lines, and the hoses for
stains that may indicate a refrigerant or a
compressor oil leak.
2. Check the A/C condenser (A) for material clogging the fins or for damage to the fins:
 Carefully clean any material from the A/C condenser fins with water and detergent. If
deeper cleaning is required, clean the fins with
Honda brite cleaner (P/N 08732-0020B).
 Be sure to dry the A/C condenser completely.
 Refer to the Refrigerant Leak Check (see page 21-93) to confirm leaks if there is visible damage
to the A/C condenser.
Check for stains.
08/08/21 14:40:55 61SNR030_210_0007
ProCarManuals.com
DYNOMITE -2009-

Î(#'

 )
21-721-7
A/C Refrigerant Oil Replacement
A
B C
3. Inspect the drive belt (see page 4-30).
4. Make sure no material is blocking the air flow to the
A/C condenser.
5. Check the dust and pollen filter. Replace it if it is clogged (see page 21-75).
6. Check for kinks or sharp bends in the A/C lines and hoses, which can greatly reduce system
performance. Replace A/C lines and hoses if they
are kinked or damaged (see page 21-8).
7. Start the engine, turn the air conditioning system on, and allow it to run for a few minutes and reach
stable operation.
 Check that the A/C operates at each position of the blower fan switch (except OFF). If the A/C
does not operate, refer to the symptom
troubleshooting.
 Check that the A/C compressor clutch (A) is engaged. The pressure plate should be rotating
at the same speed as the pulley. If the pressure
plate does not engage, refer to the symptom
troubleshooting.
 Check that the A/C condenser fan (B) and radiator fan (C) operate when the A/C compressor clutch
is engaged. If either fan fails to operate when the
A/C compressor clutch is engaged, refer to the
symptom troubleshooting.
 Check that the engine idle speed is correctly maintained when the A/C is switched on and off
and the A/C compressor clutch is engaged and
disengaged. Recommended PAG oil: SP-10
P/N 38897-P13-A01AH: 120 mL (4 fl·oz)
It is important to have the correct amount of refrigerant
oil in the A/C system to ensure proper lubrication of the
compressor. Too little oil damages the compressor; too
much oil reduces the cooling capacity of the system,
and can produce high vent temperatures.
 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 it gets on the paint, wash it off
immediately.
Add the recommended refrigerant oil in the amount
listed if you replace any of the following parts: ........
.............. ............ ........
..............
........
.............. ............ ........
..............
A/C condenser .50 mL (1 2/3 fl·oz)
Evaporator .40 mL (1 1/3 fl·oz)
Line or hose .10 mL (1/3 fl·oz)
Receiver/Dryer .10 mL (1/3 fl·oz)
Leakage repair .25 mL (5/6 fl·oz)
A/C compressor .Since the oil separator is
equipped inside the compressor
for this vehicle, oil drainage is
unnecessary at the time of
compressor replacement.
08/08/21 14:40:56 61SNR030_210_0008
ProCarManuals.com
DYNOMITE -2009-

Î(#'

 )
21-721-7
A/C Refrigerant Oil Replacement
A
B C
3. Inspect the drive belt (see page 4-30).
4. Make sure no material is blocking the air flow to the
A/C condenser.
5. Check the dust and pollen filter. Replace it if it is clogged (see page 21-75).
6. Check for kinks or sharp bends in the A/C lines and hoses, which can greatly reduce system
performance. Replace A/C lines and hoses if they
are kinked or damaged (see page 21-8).
7. Start the engine, turn the air conditioning system on, and allow it to run for a few minutes and reach
stable operation.
 Check that the A/C operates at each position of the blower fan switch (except OFF). If the A/C
does not operate, refer to the symptom
troubleshooting.
 Check that the A/C compressor clutch (A) is engaged. The pressure plate should be rotating
at the same speed as the pulley. If the pressure
plate does not engage, refer to the symptom
troubleshooting.
 Check that the A/C condenser fan (B) and radiator fan (C) operate when the A/C compressor clutch
is engaged. If either fan fails to operate when the
A/C compressor clutch is engaged, refer to the
symptom troubleshooting.
 Check that the engine idle speed is correctly maintained when the A/C is switched on and off
and the A/C compressor clutch is engaged and
disengaged. Recommended PAG oil: SP-10
P/N 38897-P13-A01AH: 120 mL (4 fl·oz)
It is important to have the correct amount of refrigerant
oil in the A/C system to ensure proper lubrication of the
compressor. Too little oil damages the compressor; too
much oil reduces the cooling capacity of the system,
and can produce high vent temperatures.
 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 it gets on the paint, wash it off
immediately.
Add the recommended refrigerant oil in the amount
listed if you replace any of the following parts: ........
.............. ............ ........
..............
........
.............. ............ ........
..............
A/C condenser .50 mL (1 2/3 fl·oz)
Evaporator .40 mL (1 1/3 fl·oz)
Line or hose .10 mL (1/3 fl·oz)
Receiver/Dryer .10 mL (1/3 fl·oz)
Leakage repair .25 mL (5/6 fl·oz)
A/C compressor .Since the oil separator is
equipped inside the compressor
for this vehicle, oil drainage is
unnecessary at the time of
compressor replacement.
08/08/21 14:40:56 61SNR030_210_0008
ProCarManuals.com
DYNOMITE -2009-

Displaying Sensor Inputs at the Climate Control Unit
Check these items before using the sensor input display mode
To run the sensor input display mode, follow these steps
21-13
The climate control unit has a mode that displays the sensor inputs it receives. This mode shows you what data the
climate control unit is receiving from each of the sensors, one at a time, and it can help you determine if a sensor is
faulty.1. Turn the ignition switch to ON (II), and check the recirculation door function; press the recirculation button to switch from FRESH to RECIRC. The air volume and sound should change slightly.
2. Set the temperature control knob to the desired test temperature. When selecting the test temperature, note these items:
 ‘‘Lo’’ temperature setting will default to MAX COOL, VENT, and RECIRC.
 ‘‘Hi’’ temperature setting will default to MAX HOT, FLOOR, and FRESH.
 19 through 31 °C settings will use the automatic climate control logic.
3. Turn the ignition switch to LOCK (0).
1. Turn the ignition switch to LOCK (0).
2. Press and hold both the AUTO and MODE buttons, then start the engine.
3. After the engine starts, release both buttons. The display panel will flash the sensor number and then the value for that sensor. Record the value displayed.
4. To advance to the next sensor, press the A/C button. Sensor Item Displayed Value1 Mode Positioning BIT
2 In-car Temperature °C
3 Outside Air Temperature °C
4 Solar Radiation Sensor Value: Dark = 00, Flashlight = 04, Cloudy = 10, Sunny = 65 10 kcal/m ·h
5 Evaporator Outlet Air Temperature °C
6 Air Mix Opening (Low value indicates cooler air distribution, higher value indicates warmer air distribution) % of opening
7 Recirculation Opening % of opening
8 Vehicle Speed (Vehicle must be driven to display speed) km/h
9 Engine Coolant Temperature °C
A Vent Temperature Air Out (TAO) °C
NOTE:  The sensor values will be displayed in degrees Celsius (°C) or an alphanumeric code. Use the chart to convert the value to degrees Fahrenheit (°F).
 If the sensor value displays ‘‘Er’’ this indicates there is an open or short in the circuit or sensor. Check for DTCs using the HDS, or use the climate control self-diagnostic function.
 If necessary, compare the sensor input display to a known-good vehicle under the same test conditions.
 If the sensor is out of the normal range, refer to the sensor test or substitute a known-good sensor, and recheck.
5. To cancel the sensor input display mode, press the AUTO button or turn the ignition switch to LOCK (0). (cont’d)
2
08/08/21 14:40:58 61SNR030_210_0014
ProCarManuals.com
DYNOMITE -2009-

µµµµ
µµ µ µµ
µµ µµ µµ
µµ µµ µµ
µµ µµ µµ ••• •••´ ´
Celsius to Fahrenheit Conversion Table
Alphanumeric Conversion Table
Alphanumeric Conversion Table (Mode Positioning)
21-14
Climate Control
General Troubleshooting Information (cont’d)
°C °F °C °F °C °F °C °F °C °F
0 3210502068308640104
1 3411522170318841106
2 3612542272329042108
3 3713552373339143109
4 3914572475349344111
5 4115592577359545113
6 4316612679369746115
7 4517632781379947117
8 46186428823810048118
9 48196629843910249120
°C °F °C °F °C °F °C °F °C °F
50 122 60 140 70 158 80 176 90 194
51 124 61 142 71 160 81 178 91 196
52 126 62 144 72 162 82 180 92 198
53 127 63 145 73 163 83 181 93 199
54 128 64 147 74 165 84 183 94 201
55 131 65 149 75 167 85 185 95 203
56 133 66 151 76 169 86 187 96 205
57 135 67 152 77 170 87 188 97 207
58 136 68 154 78 172 88 190 98 208
59 139 69 158 79 174 89 192 99 210
Display Reading (Alphanumeric) °C °F %
A1 thru A9 1 thru 9 30 thru 16 1 thru 9 B0 thru B9 10 thru 19 14 thru 2 10 thru 19
C0 thru C9 20 thru 29 4 thru 20 20 thru 29
D0 thru D9 30 thru 39 22 thru 38 30 thru 39 E0 thru E9 40 thru 49 40 thru 58 40 thru 49F0 thru F9 100 thru 109
Display Reading (Alphanumeric) Mode Position
2OVERVENT
AVENT 8 VENT-HEAT/VENTc HEAT/VENT
d HEAT/VENT-HEAT 9HEAT
b HEAT-HEAT/DEF 3 HEAT/DEF
7 HEAT/DEF-DEF
6DEF
EOVERDEF
08/08/21 14:40:58 61SNR030_210_0015
ProCarManuals.com
DYNOMITE -2009-