2006 ACURA CSX Service Repair Manual

bolt pattern child restraint fuses overheating wheel torque brake fluid

Page 1897 of 2893

ACURA CSX 2006 Service Repair Manual SymptomDiagnostic procedure Also check for
21-18Climate Control
Symptom Troubleshooting Index (cont’d)

–
–

Warm air comes out of
the vents, and there is
f

SymptomDiagnostic procedure Also check for
21-18Climate Control
Symptom Troubleshooting Index (cont’d)

–
–

Warm air comes out of
the vents, and there is
frost on the expansion
valve
Probable cause: The expansion valve is stuck
closed
Replace the expansion valve (see page 21-80)
HVAC DTCs (see page 21-9)
Check the old expansion valve
for contamination. If
contaminants are found,
replace the A/C system
component that caused the
contamination
The temperature of the
liquid line is the same
on both sides of the
expansion valve, and
the evaporator coil or
suction line has heavy
condensation Probable cause: The expansion valve is stuck
open
Replace the expansion valve (see page 21-80)
HVAC DTCs (see page 21-9)
Check the old expansion valve
for contamination. If
contaminants are found,
replace the A/C system
component that caused the
contamination
Warm air comes out of
the vents, but
operation is normal
otherwise Probable cause: Compressor failure
Do the A/C system test (see page 21-99), and
correct any problems. If necessary, replace the
compressor (see page 21-83) HVAC DTCs (see page 21-9)
Add refrigerant oil depending
on the part you replaced
(see page 21-7)
Driver’s and
passenger’s side vent
temperatures vary by
more than 11 °C (20 °F) Probable causes: The recirculation control door
or the air mix door is malfunctioning
Do the following troubleshooting:
Recirculation control motor test (see page
21-74)
Air mix control motor test (see page 21-72) HVAC DTCs (see page 21-9)
Poor or loose connections at the
terminals
Insufficient heating 1. 2.
3.
4.
5.
6.
7.Check the coolant level (see page 10-7)
Check the radiator cap (see page 10-4)
Check the coolant temperature during normal
operation
Check the heater core inlet hose temperature:
If it is COLD, check for restrictions in the hose,
a damaged or leaking thermostat, or a
damaged or leaking water pump
If it is HOT, check for restrictions in the
heater core. Back flush or replace the heater
core
Do the air mix control motor test (see page
21-72)
Check the blower motor unit for obstructions
Check for air leaks around the ducts and vents HVAC DTCs (see page 21-9)
Damaged cylinder head gasket
08/08/21 14:40:59 61SNR030_210_0019
ProCarManuals.com
DYNOMITE -2009-

Page 1898 of 2893

ACURA CSX 2006 Service Repair Manual
(#
)
21-19
System Description
EXPANSION VALVE
(Meters the required amount of
refrigerant into the evaporator) RECEIVER/DRYER
DESICCANT
(Traps debris,

(#'
)
21-19
System Description
EXPANSION VALVE
(Meters the required amount of
refrigerant into the evaporator) RECEIVER/DRYER
DESICCANT
(Traps debris, and
removes moisture)A/C COMPRESSOR
(Suction and compression)
A/C CONDENSER
(Radiation of heat)
A/C PRESSURE SENSOR
(Triple function)
BLOWER FAN
EVAPORATOR
(Absorption of heat)
EVAPORATOR TEMPERATURE SENSOR
RELIEF VALVE
(Relieves pressure at the A/C compressor
when the pressure is too high)
HIGH PRESSURE VAPORHIGH PRESSURE LIQUID
LOW PRESSURE LIQUID
LOW PRESSURE VAPOR
The air conditioning (A/C) system removes heat from the passenger compartment by transferring heat from the
ambient air to the evaporator. The A/C system refrigerant expands in the evaporator, and the evaporator becomes
very cold and absorbs the heat from the ambient air. The blower fan pushes air across the evaporator where the heat
is absorbed, and then it blows the cool air into the passenger compartment.
This vehicle uses HFC-134a (R-134a) refrigerant, which does not contain chlorofluorocar bons. Pay attention to the
following service items:
Do not mix refrigerants CFC-12 (R-12) and HFC-134a (R-134a). They are not compatible.
Use only the recommended polyalkyleneglycol (PAG) refrigerant oil (SP-10) designed for the R-134a A/C compressor. Intermixing the recommended (PAG) refrigerant oil with any other refrigerant oil will result in A/C
compressor failure.
All A/C system parts (A/C compressor, discharge line, suction line, evaporator, A/C condenser, receiver/dryer, expansion valve, O-rings for joints) are designed for refrigerant R-134a. Do not exchange with R-12 parts.
Use a halogen gas leak detector designed for refrigerant R-134a.
R-12 and R-134a refrigerant servicing equipment are not interchangeable. Use only a recovery/recycling/charging station that is U.L.-listed and is certified to meet the requirements of SAE J2210 to service the R-134a air
conditioning systems.
Always recover refrigerant R-134a with an approved recovery/recycling/charging station before disc onnecting any
A/C fitting.
(cont’d)
When the refrigerant is below
196 kPa (2.0 kgf/cm , 28 psi)
or above 3,138 kPa (32 kgf/cm ,
455 psi), the ECM/PCM turns the
compressor relay off to protect
the A/C compressor.
When the refrigerant is above
1,470 kPa (15.0 kgf/cm , 213 psi),
the A/C pressure sensor
switches the radiator and
A/C condenser fans to high speed.22
2
08/08/21 14:40:59 61SNR030_210_0020
ProCarManuals.com
DYNOMITE -2009-

Page 1899 of 2893

ACURA CSX 2006 Service Repair Manual
Oil Separator
21-20Climate Control
System Description (cont’d)
OUTLET SIDE
(To A/C condenser)
OIL SEPARATOR
FROM INSIDE
A/C COMPRESSOR
INLET SIDE
(To inside
A/C compressor)
EVAPORATOR
A/C COMPR

Page 1900 of 2893

ACURA CSX 2006 Service Repair Manual
µµ
¦µ § ¦ § ¦§
¦§
A/C Pressure Sensor
A/C System Pressure Sensor Output
Voltage (V out) System Operation
21-21
99
(1)
140
196
(2)
28 3,138
(32)
455 kPa
(kgf/cm )
psi
V
4.575

Page 1901 of 2893

ACURA CSX 2006 Service Repair Manual
Climate Control Door Positions
21-22Climate Control
System Description (cont’d)
HOT
COOL
(VENT)
(HEAT/VENT)
(HEAT) DEFROSTER
DOOR
AIR MIX
DOOR
HEAT/VENT
DOOR
08/08/21 14:41:01 61SNR030_210_0023

Page 1902 of 2893

ACURA CSX 2006 Service Repair Manual
21-23
HOTCOOL
(HEAT/DEF)
(DEF)
(cont’d)
08/08/21 14:41:01 61SNR030_210_0024
ProCarManuals.com
DYNOMITE -2009-

Page 1903 of 2893

ACURA CSX 2006 Service Repair Manual ´•••
•••
•••
•••µ
µ
•••
•••
µ ••• •••
•••

Climate Control Unit Inputs and Outputs
Cavity Wire
color Termin

Page 1904 of 2893

ACURA CSX 2006 Service Repair Manual •••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
Cavity Wirecolor Terminal
name Description Signal
21-25
2

Load next 8 pages

Page: < prev 1-10 ... 1865-1872 1873-1880 1881-1888 1889-1896 1897-1904 1905-1912 1913-1920 1921-1928 1929-1936 ... 2896 next >

oil capacity heater open gas tank weight steering fuel cap