Kia Niro: Air Conditioning System / A/C Pressure Transducer Repair procedures

Kia Niro 2017 (DE HEV) Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / A/C Pressure Transducer Repair procedures

Inspection

1.	Measure the pressure of high pressure line by measuring voltage output between terminals "1" and “2”.

Check if the voltage is within specification.

Voltage = 0.00878835 * Pressure + 0.37081095

3.	If the measured voltage is not wihtin specification, replace the A/C pressure transducer.

Replacement

1.	Disconnect the negative (-) battery terminal.

Recover the refrigerant with a recovery/charging station.

If PAG oil mixes into the POE oil of the system, dielectric breakdown may occur due to decreased volumetric resistivity and the A/C compressor may not work.

3.	Disconnect the A/C pressure transducer connector (A).

Remove the A/C pressure transducer (A).

Be careful not to bend the liquid & suction pipe.

Install in the reverse order of removal.

When installing, replace it with a new O-ring (A).

A/C Pressure Transducer Description and operation

Description A/C pressure transducer measures the pressure in high pressure line and converts it into voltage. Based on the converted voltage, engine ECU controls cooling fan by operat ...

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