Hyundai Genesis: Air Conditioning System / A/C Pressure Transducer 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 the regular value or not. 
Voltage = 0.00878835 * Pressure + 0.37081095
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3. |
If the measured voltage value is not within the specification, replace the A/C pressure transducer. |
1. |
Disconnect the negative (-) battery terminal. |
2. |
Recover the refrigerant with a recovery/charging station. |
3. |
Disconnect the A/C pressure transducer connector (A). 
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4. |
Remove the A/C pressure transducer (A).
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. |
Install in the reverse order of removal.
When installing, replace it with a new O-ring (A). 
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Description
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 coolin ...
Description
The evaporator temperature sensor will detect the evaporator
core temperature and interrupt compressor relay power in order to
prevent evaporator from freezing due to excessive cool ...
Other information:
Trouble Symptom Charts
Trouble Symptom 1
Trouble Symptom 2
Trouble symptomProbable causeRemedyThe set vehicle speed turns too high or low. "Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle s ...
Inspection
1.
Check for resistance between terminals in each switch position(LH).
[Audio]
SwitchConnectorterminalResistance(±5%)Speech Recognition6~818.81k?SEEK UP6~84.51k?SEEK DN6~82.11k?Mode6~86.71k?SEND6~8430?END6~81.11k?MUTE1~80VOL UP2~3-VOL DN2~3-
2.
Check for resistance between te ...