Kia Optima: 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 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.
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 whether it is sufficient to be regular value
or not.
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Voltage = 0.00878835 * Pressure + 0.37081095
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| 3. |
If the measured voltage value is not wihtin 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. |
Press the lock pin and separate the A/C Pressure transducer connector
(A).
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| 4. |
Remove the A/C pressure transducer (A).
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Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)
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Be careful not to bend the liquid & suction pipe.
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| 5. |
To install, reverse the removal procedure.
| •
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When installing, replace it with a new O-ring.
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Repair procedures
Replacement
1.
Remove the condenser.
2.
Remove the cap (A) on the bottom of the condenser with a L wrench.
...
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:
Repair procedures
Inspection
Radiator hoses
1.
Check radiator hoses for the following:
(1)
Improper attachment
(2)
Leaks
(3)
Cracks
(4)
...
The automatic transmission has 6 forward speeds and one reverse speed. The individual
speeds are selected automatically, depending on the position of the shift lever.
✽ NOTICE
The first few shifts on a new vehicle, if the battery has been disconnected,
may be somewhat abrupt. This is a norma ...
Receiver-Drier
Evaporator Temperature Sensor