Hyundai Palisade: Air conditioning System / A/C Pressure Transducer

Hyundai Palisade (LX2) 2020-2024 Service Manual / Heating,Ventilation And Air Conditioning / 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.

Hyundai Palisade. Description and operation

Repair procedures
Hyundai Palisade. Repair procedures   
Before measuring the pressure of the refriferant line, check whether the refrigerant amount is charged in accordance with the specified charging amount.
(Refer to Heating, Ventilation, Air Conditioning - "Specifications")
Turn the ignition switch OFF.
Install the refrigerant recovery/recycling/charging system.
(Refer to Air Conditioning System - "Repair procedures")
Turn ON the ignition switch, put into operation the air conditioner.
Calculate the reference voltage of the Recovery/Recycle/Recharge machine high pressure value using the formula below.
Reference voltage (V) = 0.0088 * pressure(psi) + 0.37
Measure the sensor output voltage between terminal "1" and "2".

Hyundai Palisade. Repair procedures

Pin No
Power (+5V)

If the reference voltage value and the sensor output voltage value are close to each other, the air conditioner pressure transducer is normal.
If 0V is output or the reference voltage value and sensor output voltage value are not close to each other, replace the air conditioner pressure transducer.
Hyundai Palisade. Repair procedures   
Check if the output voltage changes when the high pressure value of the refrigerant line changes.

Hyundai Palisade. Repair procedures

Disconnect the negative (-) battery terminal.
Recover the refrigerant with a recovery/charging station.
Disconnect the A/C pressure transducer connector (A).

Hyundai Palisade. Repair procedures

Remove the A/C pressure transducer (A).
Tightening torque :
10 - 12 N.m (1.02 - 1.22 kgf.m, 7.4 - 8.8 lb-ft)

Hyundai Palisade. Repair procedures

Install in the reverse order of removal.
Hyundai Palisade. Repair procedures   
When installing, replace it with a new O-ring (A).


    Repair procedures SReplacement 1. Remove the condenser. (Refer to A/C System - "Condenser") 2...

    Evaporator Temperature Sensor

    Description and operation Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling...

    Other information:

    Hyundai Palisade (LX2) 2020-2024 Owner's Manual: Appearance care

    Exterior Care Exterior general caution It is very important to follow the label directions when using any chemical cleaner or polish. Read all warning and caution statements that appear on the label. Protecting your vehicle's finish Washing To help protect your vehicle’s finish from rust and deterioration, wash it thoroughly and frequently at least once a month with lukewarm or cold water...

    Hyundai Palisade (LX2) 2020-2024 Service Manual: Specifications

    Specifications Front Suspension Item Specification Suspension type MacPherson Strut Shock absorber Type Gas Rear Suspension Item Specification Suspension type Multi link Shock absorber Type Gas Wheel & Tire Item Specification Front Rear Aluminum 18 inch 7...


    Air bag inflation conditions

    Hyundai Palisade. Air bag inflation conditions

    Front air bags

    Front air bags and the driver's knee air bag are designed to inflate in a frontal collision depending on the the severity of impact of the front collision.

    Hyundai Palisade. Air bag inflation conditions

    Hyundai Palisade. Air bag inflation conditions

    read more

    Copyright © 2024