Kia Sportage: Air conditioning System / A/C Pressure Transducer Description and operation
A/C pressure transducer converts the pressure value of high pressure line into
voltage value after measuring it. Based on the converted voltage value, engine
ECU controls cooling fan by operating it at high or low speed. Engine ECU stops
the operation of compressor when the temperature of refrigerant line is too
high or low irregularly to optimize air conditioning system.

Replacement
1.
Remove the condenser.
2.
Remove the cap (B) from the bottom of the condenser using an L wrench
(A).
...
Inspection
1.
Measure the pressure of high pressure line by measuring voltage output
between terminals “1” and “2”.
2.
...
Other information:
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the intake and exhaust valve in accordance with the ECM control signal
which is calculated by the engine speed and load.By controlling CVVT, the valve
over-lap or under-lap occ ...
Compression Pressure Inspection
If the there is lack of power, excessive oil consumption or poor fuel
economy, measure the compression pressure.
1.
Warm up and stop engine.
...