| Component Location Index |

| 1. Service port
(High pressure) 2. A/C pressure transducer (APT) 3. Service port (Low pressure) |
4. Compressor 5. Suction & Liquid pipe assembly 6. Expansion valve |

| 1. Auto defogging
sensor 2. Photo Sensor 3. Heater & Blower unit |
4. Air filter 5. Evaporator Temperature Sensor 6. Heater & A/C control unit |
Refrigeration Cycle
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.
Specifications Smart Key Unit Items Specification Rated voltage DC 12V Operating voltage DC 9 - 16V Operating temperature -22°F to 167°F (-30°C to- 75°C) Load Max.
Description The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed.