2006 ACURA CSX oil

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21-91
System Evacuation
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.
 Do not allow moisture to contaminate the A/C system oil. Moisture in the oil is difficult to remove, and it can
damage the A/C compressor.
1. When an A/C System has been opened to the atmosphere, such as during installation or repair, it
must be evacuated using an R-134a refrigerant
recovery/recycling/charging station. If the system
has been open for several days, the receiver/dryer
should be replaced, recover the refrigerant, if any,
from the A/C system (see page 21-90). And the
system should be evacuated for several hours.2. 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. Recover the refrigerant, if any, from
the A/C system (see page 21-90).
3. Evacuate the system. The vacuum pump should run for a minimum of 45 minutes to eliminate all
moisture from the system. When the suction gauge
reads 93.3 kPa (700 mmHg, 27.6 in.Hg) for at least
45 minutes, close all valves, and turn off the
vacuum pump.
4. If the suction gauge does not reach approximately 93.3 kPa (700 mmHg, 27.6 in.Hg) in 15 minutes,
there is probably a leak in the system. Partially
charge the system, and check for leaks (see page
21-93).
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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).
08/08/21 14:44:53 61SNR030_210_0093
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Fluorescent Dye Usage Tips
Refrigerant Capacity:
400 to 450 g
0.40 to 0.45 kg
0.9 to 1.0 lbs
14.1 to 15.9 oz
21-94Climate Control
Refrigerant Leak Check (cont’d)
A
C B
 Use only Tracer-Stick single dose fluorescent dyecapsules from Tracerline
. Other dyes contain
solvents that may contaminate the refrigerant oil,
leading to component failure.
 Adding excessive amounts of dye can damage the compressor.
 PAG oil is water soluble, so condensation on the evaporator core or the refrigerant lines may wash the
PAG oil and fluorescent dye away from the actual
leak. Condensation may also carry dye through the
evaporator module drain.
 After checking and repairing leaks, thoroughly clean any residual dye from the areas where leaks were
found. Use GLO-AWAY dye cleaner, from Tracerline
,
and hot water to remove the dye (follow the
instructions on the bottle). Residual dye stains can
cause misdiagnosis of any future A/C system leaks.
 If any refrigerant dye contacts an exterior paint surface, remove it by doing this:
– Carefully wash the affected surfaces to remove any dirt, and to prevent paint scratching.
– Mix water and isopropyl alcohol in a 50/50 mixture.
– Soak a soft 100 percent cotton towel with the water/ alcohol mixture, and place the cloth on the affected
areas to remove the dye.
– After removing the dye with the water/alcohol- soaked cloth, carefully wash the affected areas, and
check that there is no remaining dye. 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 refrigerant from the A/C system (see page 21-90), and evacuate the system (see page 21-91). If
the system achieves a vacuum of approximately
93.3 kPa (700 mmHg, 27.6 in.Hg) in 15 minutes, and
holds the vacuum for 15 minutes, then the system
does not have a leak at this time. If the system
cannot achieve or hold a vacuum, continue the
refrigerant leak check.
3. Open the high pressure valve to charge the system to the specified capacity.
Select the appropriate units of measure for your
refrigerant charging station.
08/08/21 14:44:54 61SNR030_210_0095
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Possible Leak Area Diagnostic Procedure with theLeak Detector Notes
21-95
4. With the engine OFF, use a halogen leak detector first to detect the leak source. Follow a continuous path in order
to ensure that you will not miss any possible leaks. Test the following areas of the system for leaks:

 





 


Service Ports Check the service ports with
the detector.
If the detector ‘‘sniffs’’ a leak,
use fluorescent dye to
confirm it. When capping the service ports, ensure that the seals
on the port caps are in place, and that the caps are
tight. The caps are used as the final seals in the
system.
Condenser If the detector ‘‘sniffs’’ a leak, use fluorescent dye to confirm it. Check for joints or connections coated with oily
dust.
Check for damaged and corroded areas.
Check all fittings, couplings, brazed/welded areas
and areas around attachment points.
Move the probe slowly (1 inch/second or less), and
keep it within 1/4 inch of the component being
checked. This maximizes the chance of detecting a
leak.
If you detect a leak, blow compressed air over the
area, then recheck for leaks. For large leaks,
clearing the area with compressed air may help
you pinpoint the leak source.
A/C Lines (Low
pressure side) Wiggle the rubber hoses
when checking crimped metal
ends.
If the detector ‘‘sniffs’’ a leak,
use fluorescent dye to
confirm it. Check all fittings, couplings, pressure switches,
brazed/welded areas, and areas around attachment
points on A/C lines and components.
Check for damaged and corroded areas.
Move the probe slowly (1 inch/second or less), and
keep it within 1/4 inch of the component being
checked. This maximizes the chance of detecting a
leak.
5. Close the quick coupler valves, then disconnect the quick couplers from the vehicle service ports.
6. Attach the universal connect set, from the Optimax Jr. Leak Detection Kit, to the service valve fitting. Close the control valve (the black knob on the connect set).
7. Attach the charging station low pressure hose quick coupler to the service valve fitting, and open the quick coupler valve. Evacuate the connect set using the charging station vacuum pump, then close the quick coupler
valve.
8. Detach the universal connect set, and install a Tracer-Stick
dye capsule between the connect set and the service
valve fitting (see the manufacturer’s instructions for more detail).
9. Attach the quick coupler on the universal connect set to the low pressure service port on the vehicle. Open the charging station low pressure hose quick coupler valve, but do not open the control valve.
10. Start the engine, and set the A/C system to MAX A/C. Open the control valve to let refrigerant and the dye enter the A/C system through the low pressure service port. Close the control valve when the Tracer-Stick
dye capsule
is empty.
11. Run the engine and A/C system for 15 minutes to thoroughly circulate the dye. Then shut the engine off, and inspect the following areas of the system for leaks.
(cont’d)
08/08/21 14:44:54 61SNR030_210_0096
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21-98Climate Control
A/C System Noise Check (cont’d)
5. Turn the ignition switch to LOCK (0), and check the
drive belt for excessive wear, oil contamination,
improper routing, or a faulty belt tensioner
(see page 4-30). Correct any problems found. Start
the engine, run the A/C system, and check if the
noise is coming from the drive belt, the belt
tensioner or any of the pulleys. Repair or replace
any faulty components.
6. Listen for noises coming from the A/C lines, the A/C hoses, the condenser, the evaporator, the receiver/
drier, or the expansion valve, and check these
items:
 Noises caused by A/C components touching other components or the body. Reroute or
insulate the A/C component(s) as needed, and
recheck for noise.
 Loose, damaged or excessively worn A/C components or mounting hardware. Repair or
replace the faulty component(s) or hardware, and
recheck for noise.
 A moaning noise coming from the A/C suction line. If there is a moaning noise, check the
system refrigerant charge (see page 21-92). If the
refrigerant charge is OK, replace the receiver/
dryer.
7. Check the operation of the A/C compressor clutch:  Make sure compressor clutch engages withoutslipping. If the clutch does not engage,
troubleshoot the A/C compressor clutch circuit
(see page 21-62). If the compressor clutch slips,
replace the complete clutch assembly (see page
21-86).
 Make sure the compressor clutch disengages. If the clutch does not disengage, do the A/C
compressor clutch check (see page 21-85). If the
compressor clutch is OK, replace the A/C
compressor (see page 21-83).
 Make sure the compressor clutch cycles normally. If the compressor clutch is cycling rapidly, the
A/C system is probably low on refrigerant due to
a leak. Do the refrigerant leak check (see page
21-93). If the refrigerant charge is OK, and there
are no leaks, troubleshoot the A/C compressor
clutch circuit. 8. Listen with a stethoscope for noises coming from
the A/C compressor, and check these items:
 The noise changes when the compressor clutch disengages. If the noise does not change when
the A/C compressor disengages, the noise may
be caused by an engine-related component.
Probe the engine area with a stethoscope to
pinpoint the noise.
 The A/C system operating pressures are normal. If the system pressures are abnormal,
troubleshoot the problem using the pressure test
table in the A/C system check (see page 21-99).
Correct the pressure-related problem(s), and
recheck for noise.
 The compressor hose connections, mounting brackets, and fasteners are in good condition. If
any of these components are loose, damaged, or
excessively worn, repair or replace the faulty
component(s), and recheck for noise. If these
components are in good condition, and the noise
is still present, replace the A/C compressor
(see page 21-83).
08/08/21 14:44:54 61SNR030_210_0099
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Pressure Test
Test results Related symptoms Probable causeRemedy
21-103






Suction and
discharge pressures
are normal
Warm air from the vents. The A/C system
contains too much
refrigerant oil.
The air mix door is
not operating
properly.Recover refrigerant (see page 21-90)
and evacuate the system (see page
21-91). Adjust the amount of oil in
the system, then recharge the
system (see page 21-92).
Check air mix door operation
(see page 21-72), and repair as
needed.
Suction and
discharge pressures
are roughly equal
and steady The suction and
discharge pressures
equalize when the engine
is revved. The A/C compressor
clutch or the drive
belt is slipping, or the
compressor shaft
seal is leaking.Check whether the A/C compressor
clutch or the drive belt is slipping.
If the drive belt is slipping, replace
the drive belt (see page 4-31). Also
inspect the drive belt auto-tensioner
(see page 4-31).
If the A/C compressor clutch is
slipping, replace it (see page 21-86).
Check the A/C compressor shaft seal.
If it’s leaking, replace the A/C
compressor (see page 21-83).
Suction and
discharge pressures
are roughly equal but
fluctuate Suction and discharge
pressures fluctuate while
running. Pressures
equalize as soon as the
A/C compressor
disengages. The compressor
discharge valve or
the compressor
gasket is faulty.
Replace the A/C compressor (see page
21-83).
Suction and
discharge pressures
are roughly equal
and abnormally low The suction and
discharge pressures do
not change during
continued operation. The A/C system is
undercharged.
Recover refrigerant (see page 21-90),
then do the refrigerant leak check
(see page 21-93). Repair any leaks,
then recharge the system (see page
21-92).
Suction and
discharge pressures
are abnormally high,
but normalize when
the condenser is
cooled The suction pressure
decreases when cool
water is sprayed on the
A/C condenser.
The A/C system is
overcharged.
Recover refrigerant (see page 21-90),
evacuate the system (see page 21-91),
and recharge the system to
specifications (see page 21-92).
(cont’d)
08/08/21 14:44:56 61SNR030_210_0104
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22-7
Relay and Control Unit Locations
Engine Compartment
ABS MODULATOR-CONTROL UNIT
(’06-07 Touring and Premium models) or
VSA MODULATOR-CONTROL UNIT
(’07 TYPE S and ’08-09 models)
ECM/PCM
A/C CONDENSER FAN RELAY FAN CONTROL RELAY
BLOWER MOTOR RELAYPOWERMIRRORDEFOGGERRELAY
PGM-FI SUBRELAY
REAR WINDOW DEFOGGER RELAY
IGNITION COIL RELAY
A/C COMPRESSOR CLUTCH RELAY
UNDER-HOOD FUSE/RELAY BOX
PGM-FI MAIN RELAY 1
(FI MAIN) RADIATOR FAN RELAY
ELECTRONIC THROTTLE CONTROL
SYSTEM (ETCS) CONTROL RELAY
ELECTRICAL LOAD DETECTOR (ELD)
08/08/21 14:22:06 61SNR030_220_0009
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HarnessLocation
Engine Compartment Dashboard Others (Floor, Door, Trunk, and Roof)Notes
22-13
Connectors and Harnesses
Connector Index
Identification numbers have been assigned to in-line connectors, junction connectors, and terminals. The number is preceded by the letter ‘‘C’’
for connectors, ‘‘G’’ for ground terminals, or ‘‘T’’ for non-ground terminals.
A/C wire harness C205, C504 (see page 22-56)
Battery ground cable ( ), G1 (see page 22-14)
Console subharness C551, C601, C603 (see page 22-57)
Dashboard wire harness
(View of driver’s side) C201, C202, C203, C501,
C502, C751, C752, C801
G501, G503(see page 22-28)
Dashboard wire harness
(View of middle section) C503, C506, C551
G504, G506(see page 22-30)
Dashboard wire harness
(View of passenger’s side) C504, C761, C762
G502, G505(see page 22-32)
Driver’s door subharness C754 (see page 22-46)
Driver’s door wire harness C751, C752 C753, C754 (see page 22-46)
Driver’s seat position sensor harness
(With seat heater) C602 (see page 22-52)
Driver’s seat position sensor harness
(Without seat heater) C602 (see page 22-53)
Driver’s seat wire harness C602, C604 (see page 22-52)
Engine compartment wire harness
(Left branch) C101, C102, C103
G301C201 through C205, C209
G401 (see page 22-22)
Engine compartment wire harness
(Right branch) C206, C207
G201, G202G402, G403 (see page 22-26)
Engine ground cable A T1, G2 (see page 22-14)
Engine ground cable B T2, G3 (see page 22-14)
Engine wire harness (A/T) C101, C103, C105, C106, C107
G101 (see page 22-16)
Engine wire harness (M/T) C101, C105, C106 G101 (see page 22-18)
Floor wire harness (Left branch) C204, C209, C501, C502, C506, C601, C603C602, C604, C701,
C702, C771
G601, G603(see page 22-34)
Floor wire harness (Right branch) C781, C782, C783 G602(see page 22-38)
Front passenger’s door subharness C763 (see page 22-48)
Front passenger’s door wire harness C761, C762 C763 (see page 22-48)
Front passenger’s seat wire harness
(With seat heater) C782, C783 (see page 22-54)
Left rear door wire harness C771 (see page 22-50)
ODS unit harness (With seat heater) C782 (see page 22-54)
ODS unit harness (Without seat
heater) C782 (see page 22-55)
Rear window defogger ground wire G801 (see page 22-42)
Rear wire harness (Left branch) C701, C702, C703 G701(see page 22-40)
Rear wire harness (Right branch) (see page 22-42)
Right rear door wire harness C781 (see page 22-51)
Roof wire harness (With moonroof) C801 (see page 22-44)
Roof wire harness (Without moonroof) C801 (see page 22-45)
Shift solenoid wire harness (A/T) C107 (see page 22-16)
Starter subharness ( ) C102, C106
T3, T4
T101, T102 (see page 22-20)
Trunk lid spoiler subharness (TYPE S
model) C703 (see page 22-40)
USB harness C671 (see page 22-34)
USB subharness C671 (see page 22-57)
08/08/21 14:22:07 61SNR030_220_0015
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