| Component Location |

| 1. Condenser 2. Discharge hose 3. Suction & Liquid tube assembly 4. Compressor |
5. Service port (High pressure) 6. A/C Pressure transducer (APT) 7. Service port (Low pressure) 8. Expansion valve |

| 1. Heater & A/C Control Unit 2. Photo sensor |
3. Heater & Blower Unit |
Refrigerant System Service Basics (R-134a) Refrigerant Recovery Use only service equipment that is U.L-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a(R-134a) from the air conditioning system.
Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil.
Inspection 1. Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature. 1. Ambient Sensor (+) 2.
Description The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of heater core. The PTC heater is an electric heater using a PTC element as an auxiliary heating device that supplements deficiency of interior heat source in highly effective diesel engine.