Honda 2004 Odyssey, Service Manual

Page: 1542 / 2459

＊０４
Ｓ０Ｘ４Ａ１１Ｇ１０１００００００００ＣＡＡＴ１０
21-11
System Description
EVAPORATOR EXPANSION VALVE
RECEIVER/DRYER
A/C COMPRESSOR
CONDENSER
A/C PRESSURE SWITCH
BLOWER FAN
EVAPORATOR
EVAPORATOR TEMPERATURE
SENSOR
A/C COMPRESSOR RELIEF VALVE
HIGH PRESSURE VAPOR
HIGH PRESSURE LIQUID
LOW PRESSURE LIQUID
LOW PRESSURE VAPOR
The air conditioning system removes heat from the passenger compartment by circulating refrigerant through the
system as shown below.
This vehicle uses HFC-134a (R-134a) refrigerant which does not contain chlorofluorocarbons. 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 (DENSO ND-OIL 8) designed for the R-134a
compressor. Intermixing the recommended (PAG) refrigerant oil with any other refrigerant oil will result in
compressor failure.
• All A/C system parts (compressor, discharge line, suction line, evaporator, 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 R-134a air conditioning
system.
• Always recover the refrigerant R-134a with an approved recovery/recycling/charging station before disconnecting
any A/C fitting.
(cont’d)
(Meters the required amount of
refrigerant into the evaporator)
(Traps debris, and
removes moisture)
(Suction and compression)
(Radiation of heat)
(Triple function)
When the refrigerant is below
196 kPa (2.0 kgf/cm , 28 psi)
or above 3,140 kPa (32 kgf/cm ,
455 psi), the A/C pressure
switch opens the circuit to
the A/C switch and stops the
air conditioning to protect the
compressor.
When the refrigerant is above
1,520 kPa (15.5 kgf/cm ,
220 psi), the A/C pressure
switch switches the radiator and
condenser fans to high speed.
(Absorption of heat)
(Relieves pressure at the
compressor when the
pressure is too high)
2
2
2
03/07/29 10:09:46 61S0X050_210_0012