Hyundai Genesis: Air Conditioning System / A/C Pressure Transducer Description and Operation
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 at high speed or low speed. Engine ECU stops the operation
of the compressor when the temperature of refrigerant line is very high
or very low irregularly to optimize air conditioning system.

Replacement
1.
Remove the condenser.
2.
Remove the cap (B) on the bottom of the condenser with the L wrench (A).
Tightening torque :
9.81 ~ 14.71 N.m (1.0 ~ 1.5 kgf.m, 7.2 ~ 10.8 lb-ft) ...
Inspection
1.
Measure the pressure of high pressure line by measuring voltage output between terminal “1” and “2”.
2.
Inspect the voltage value whether it is the regular value or not. ...
Other information:
Refrigerant System Service Basics
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.
•
Air conditioning refrigerant or lubricant va ...
Removal
1.
Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported.
2.
Remove the front wheel and tire (A) from the rear hub.
Tightening torque:
88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
Be careful not to damage the ...