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:
When ignition switch is turned to ON, the indicator light illuminates, then goes
off if the ESC system is operating normally.
The ESC indicator light blinks whenever ESC is operating or illuminates when
ESC fails to operate.
The ESC OFF indicator light comes on when the ESC is turned off wit ...
All tire pressures (including the spare) should be checked when the tires are
cold. “Cold Tires” means the vehicle has not been driven for at least three hours
or driven less than one mile (1.6 km).
Recommended pressures must be maintained for the best ride, top vehicle handling,
and mini ...