Air Conditioning System: Overview Hyundai Equus II

Description

A/C pressure transducer convert the pressure value of high pressure line into voltage value after measure it. By converted voltage value, engine ECU controls cooling fan by operating it high speed or low speed. Engine ECU stop the operation of compressor when the temperature of refrigerant line is so high or so low irregularly to optimize air conditioning system.

Scheme 7

1. Measure the pressure of high pressure line by measuring voltage output between NO. 1 and NO. 2 terminals
2. Inspect the voltage value whether it is sufficient to be regular value or not. Voltage = 0.00878835 * Pressure + 0.37081095 [PSIA]
3. If the measured voltage value is not specification, replace the A/C pressure transducer.

Scheme 8

1. Disconnect the negative (-) battery terminal.
2. Recover the refrigerant with a recovery/charging station.
3. Disconnect A/C pressure transducer connector (3P) (A).
4. Remove the A/C pressure transducer (B). Torque: 10~12N.m (1.0~1.2kgf.m, 7.4~8.8lbf.ft) CAUTION: Take care that liquid & suction pipe are not bent.
5. Installation is the reverse order of removal.

Scheme 9

The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator freezing by excessive cooling.

Scheme 10

1. Ignition "OFF"
2. Disconnect evaporator temperature sensor.
3. Using the multi-tester, Measure resistance between terminal "1" and "2" of evaporator temperature sensor.

1. The photo sensor is located at the side of defrost nozzle.
2. The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The solar radiation received by its light receiving portion, generates an electromotive force in proportion to the amount of radiation received which is transferred to the automatic temperature control module so that the solar radiation compensation will be performed.

1. The ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperatures.
2. The sensor output will be used for discharge temperature control, temperature regulation door control, blower motor level control, mix mode control and in-car humidity control. NOTE: If the ambient temperature is below 3.0°C (37.4°F), the A/C compressor will be stopped. The compressor will be operated by manual operating.

Scheme 11

1. Ignition "OFF"
2. Disconnect ambient temperature sensor.
3. Check the resistance of ambient temperature sensor between terminals 1 and 2 whether it is changed by changing of the ambient temperature.

1. A.Q.S is located at center support in front of the engine radiator, and detects hazardous elements in ambient air providing output signal to control.
2. It will detect sulfurous acid gas, carbon dioxide, carbon monoxide, hydrocarbon and allergen.

Achieve exclusion function on croaker before fogging occurrence. Senses vehicles rational moisture and proves watch security and amenities.

1. The function of cluster ion generator is cleaning air by sterilizing and dissolving of air conditions.
2. The function of cluster ion generator is controlling mold caused by stench of air conditioner and external inflow of air.