Heating and Air Conditioning: Description and Operation

Refrigerant Flow View:

AIR CONDITIONER
The air conditioner removes heat from the passenger compartment by circulating refrigerant through the system as shown. The air conditioning system is controlled by one of two electronic climate control systems: Manual Heating and Air Conditioning; or Automatic Climate Control.

HFC-134a (R-134a) CAUTIONS
This car 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 (ND-OIL 8: PIN 38899-PR7-A01) 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) have to be proper to refrigerant R-134a. Do not confuse 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. Only use a Recovery/Recycling/Charging System that is U.L.listed and is certified to meet the requirements of SAE J221O to service R-134a air conditioning systems.
- Always recover the refrigerant R-134a with an approved Recover/Recycling/Charging System, before disconnecting any A/C fitting.