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:
Specifications
Specification
Item
Specification
Control type
N/H (Normal High)
Control pressure (kpa (kgf/cm², psi))
0 - 1,569.06 (0 - 16, 0 - 227.57)
Currency (mA)
0 - 1 ...
1. Open the trunk lid.
2. Open the service cover.
3. Remove the nuts from the vehicle.
4. Disconnect the rear combination lamp connector.
5. Remove the rear combination lamp assembly from the body of the vehicle.
6. Remove the socket from the assembly by turning the socket counterclockw ...
Receiver-Drier
Evaporator Temperature Sensor