Kia Rio: Air Conditioning System / A/C Pressure Transducer
Description and operation
The A/C Pressure Transducer (APT) 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.

Repair procedures
1. |
Measure the pressure of high pressure line by measuring voltage output
between terminal “1” and “2”.

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2. |
Inspect the voltage value to determine whether it is within specification.
Voltage = 0.00878835 * Pressure + 0.37081095
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3. |
If the measured voltage value is not specification, replace the A/C pressure
transducer.
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1. |
Disconnect the negative (-) battery terminal.
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2. |
Recover the refrigerant with a recovery/charging station.
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3. |
Remove the A/C pressure transducer (A) disconnecting the A/C pressure
transducer connector
Tightening torque :10 - 12 N·m (1.0 - 1.2 kgf·m, 7.4 - 8.8 lb·ft)
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Repair procedures
Replacement
1.
Remove the condenser.
2.
Remove the cap (B) on the bottom of the condenser with L wrench (A).
...
Description and operation
Description
The evaporator temperature sensor will detect the evaporator core temperature
and interrupt compressor relay power in order to prevent evaporator ...
Other information:
For your safety, the Intelligent Variable Transmission (IVT) has a shift lock
system which prevents shifting the transmission from P (Park) into R (Reverse) unless
the brake pedal is depressed.
To shift the transmission from P (Park) into R (Reverse):
1. Depress and hold the brake pedal.
2. S ...
Engine oil and filter
The engine oil and filter should be changed at the intervals specified in the
maintenance schedule. If the vehicle is being driven in severe conditions, more
frequent oil and filter changes are required.
Drive belts
Inspect all drive belts for evidence of cuts, cracks, e ...