Hyundai Palisade: Air conditioning System / Refrigerant Line

Hyundai Palisade (LX2) 2020-2025 Service Manual / Heating,Ventilation And Air Conditioning / Air conditioning System / Refrigerant Line

Components and components location
Components
[Isometric view]

Hyundai Palisade. Components and components location

1. Front suction & Liquid pipe assembly

[Top view]

Hyundai Palisade. Components and components location

1. Front suction & Liquid pipe assembly

Repair procedures
Replacement
[Front suction & Liquid pipe assembly]
1.
If a compressor is available, the air conditioner is operated for a few minutes in the engine idle state and then the engine is stopped.
2.
Disconnect the negative (-) battery terminal.
3.
Recover the refrigerant with a recovery/charging station.
4.
Remove the engine cover.
(Refer to Engine Mechanical System - "Engine Cover")
5.
Loosen the mounting nut and remove the expansion valve cover (A).
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)

Hyundai Palisade. Repair procedures
6.
Loosen the mounting bolts and separate the expansion valve (A) fron evaporator core.
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)

Hyundai Palisade. Repair procedures
7.
Loosen the mounting nuts and separate the suction line (A), discharge line (B).
Tightening torque :
19.6 - 23.5 N.m (2.0 - 2.4 kgf.m, 14.5 - 17.4 lb-ft)

Hyundai Palisade. Repair procedures
8.
Press the lock pin and separate the APT (Air conditioning Pressure Transducer) sensor connector (A).

Hyundai Palisade. Repair procedures
9.
Remove the engine room under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
10.
Remove the engine mounting braket.
(Refer to Engine Mechanical System - "Engine Mounting")
11.
Separate the compressor suction line (A) and discharge line (B) connection nuts and disconnect the line.
Tightening torque :
20.9 - 31.2 N.m (2.1 - 3.2 kgf.m, 15.4 - 23.0 lb-ft)
Hyundai Palisade. Repair procedures   
•
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")

Hyundai Palisade. Repair procedures
12.
Loosen the mounting bolts, nuts and remove the engine room under cover [RH] (A).
Tightening torque
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)

Hyundai Palisade. Repair procedures
13.
Remove the refrigerant pipe line mounting nuts and braket bolt.
Tightening torque :
Nut : 8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)
Bolt : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

Hyundai Palisade. Repair procedures
14.
Loosen the mounting bolt and remove the Front suction & Liquid pipe assembly (A).
Tightening torque :
7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

Hyundai Palisade. Repair procedures
15.
To install, reverse removal procedure.
Hyundai Palisade. Repair procedures   
•
Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
•
Tighten the bolt or nut joint to the specified torque.
•
Using a gas leak detector, check for refrigerant leakage.
•
Evacuate air in the refrigeration system and charge system with refrigerant.
[Rear Suction & Liquid Pipe Assembly]
1.
If a compressor is available, the air conditioner is operated for a few minutes in the engine idle state and then the engine is stopped.
2.
Disconnect the negative (-) battery terminal.
3.
Recover the refrigerant with a recovery/charging station.
4.
Remove the rear wheel guard [RH].
(Refer to Body - "Rear Wheel Guard")
5.
Loosen the mounting nuts and separate the suction line, discharge line (A).
Tightening torque :
19.6 - 23.5 N.m (2.0 - 2.4 kgf.m, 14.5 - 17.4 lb-ft)

Hyundai Palisade. Repair procedures
6.
Loosen the mounting bolts, nuts and remove the engine room under cover [RH] (A).
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)

Hyundai Palisade. Repair procedures
7.
Remove the refrigerant pipe line mounting nuts.
Tightening torque :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)

Hyundai Palisade. Repair procedures
8.
Loosen the mounting bolt and remove the Rear suction & Liquid pipe assembly (A).
Tightening torque :
7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

Hyundai Palisade. Repair procedures
9.
To install, reverse removal procedure.
Hyundai Palisade. Repair procedures   
•
Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
•
Tighten the bolt or nut joint to the specified torque.
•
Using a gas leak detector, check for refrigerant leakage.
•
Evacuate air in the refrigeration system and charge system with refrigerant.

    Compressor oil

    Repair procedures Oil Specification 1. The R-134a or R-1234yf system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil...

    Compressor

    Description and operation Description The compressor is the power unit of the A/C system. It is located on the side of engine block and driven by a V-belt of the engine...

    Other information:

    Hyundai Palisade (LX2) 2020-2025 Service Manual: Troubleshooting


    ..

    Hyundai Palisade (LX2) 2020-2025 Service Manual: Engine Control Module (ECM)


    Schematic diagrams ECM Terminal and Input / Output Signal ECM Terminal Function Connector [A] Pin No Description Connected to 1 Ignition Coil (Cylinder #4) control output Ignition Coil (Cylinder #4) 2 Injector (Cylinder #3) [High] control output Injector (Cylinder #3) 3 Injector (Cylinder #5) [High] control output Injector (Cylinder #5) 4 Injector (Cylinder #1) [High] control output Injector (Cylinder #1) 5 Camshaft Position Sensor (CMPS) [Bank 2 / Exhaust] signal input Camshaft Position Sensor (CMPS) [Bank 2 / Exhaust] 6 Camshaft Position Sensor (CMPS) [Bank 2 / Intake] signal input Camshaft Position Sensor (CMPS) [Bank 2 / Intake] 7 Throttle Position Sensor (TPS) 2 signal input Throttle Position Sensor (TPS) 2 8 - 　 9 Rail Pressure Sensor (RPS) signal input Rail Pressure Sensor (RPS) 10 CVVT Oil Temperature Sensor (OTS) signal input CVVT Oil Temperature Sensor (OTS) 11 - 　 12 - 　 13 Sensor power (+5V) CVVT Oil Temperature Sensor (OTS) Manifold Absolute Pressure Sensor (MAPS) 14 - 　 15 - 　 16 - 　 17 - 　 18 - 　 19 ETC Motor [-] control output ETC Motor 20 Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] Heater control output Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] 21 Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 1] Heater control output Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 1] 22 Ignition Coil (Cylinder #5) control output Ignition Coil (Cylinder #5 23 Injector (Cylinder #6) [High] control output Injector (Cylinder #6) 24 Injector (Cylinder #2) [High] control output Injector (Cylinder #2) 25 Injector (Cylinder #4) [High] control output Injector (Cylinder #4) 26 Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] signal input Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] 27 Camshaft Position Sensor (CMPS) [Bank 1 / Intake] signal input Camshaft Position Sensor (CMPS) [Bank 1 / Intake] 28 Intake Air Temperature Sensor (IATS) signal input Intake Air Temperature Sensor (IATS) 29 Manifold Absolute Pressure Sensor (MAPS) signal input Manifold Absolute Pressure Sensor (MAPS) 30 - 　 31 - 　 32 - 　 33 - 　 34 Sensor power (+5V) Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] Camshaft Position Sensor (CMPS) [Bank 2 / Intake] 35 - 　 36 Sensor power (+5V) Camshaft Position Sensor (CMPS) [Bank 1 / Intake] Camshaft Position Sensor (CMPS) [Bank 2 / Exhaust] 37 - 　 38 Purge Control Solenoid Valve (PCSV) control output Purge Control Solenoid Valve (PCSV) 39 - 　 40 ETC Motor [+] control output ETC Motor 41 - 　 42 - 　 43 Ignition Coil (Cylinder #1) control output Ignition Coil (Cylinder #1) 44 Injector (Cylinder #6) [Low] control output Injector (Cylinder #6) 45 Injector (Cylinder #3) [Low] control output Injector (Cylinder #3) 46 Injector (Cylinder #2) [Low] control output Injector (Cylinder #2) 47 Sensor ground Camshaft Position Sensor (CMPS) [Bank 1 / Exhaust] Camshaft Position Sensor (CMPS) [Bank 2 / Intake] 48 Sensor ground Manifold Absolute Pressure Sensor (MAPS) Oil Pressure Sensor (OPS) 49 Sensor ground Camshaft Position Sensor (CMPS) [Bank 1 / Intake] Camshaft Position Sensor (CMPS) [Bank 2 / Exhaust] 50 - 　 51 - 　 52 - 　 53 - 　 54 Engine Coolant Temperature Sensor (ECTS) signal input Engine Coolant Temperature Sensor (ECTS) 55 Sensor Shield Crankshaft Position Sensor (CKPS) Knock Sensor (KS) #1 [Bank 1] Knock Sensor (KS) #2 [Bank 2] 56 Sensor power (+5V) Rail Pressure Sensor (RPS) 57 - 　 58 Sensor ground Engine Coolant Temperature Sensor (ECTS) Rail Pressure Sensor (RPS) 59 Sensor ground Throttle Position Sensor (TPS) 1 Throttle Position Sensor (TPS) 2 60 Variable Intake Solenoid (VIS) Valve 1 control output Variable Intake Solenoid (VIS) Valve 1 61 Variable Intake Solenoid (VIS) Valve 2 control output Variable Intake Solenoid (VIS) Valve 2 62 - 　 63 - 　 64 Ignition Coil (Cylinder #2) control output Ignition Coil (Cylinder #2) 65 Injector (Cylinder #1) [Low] control output Injector (Cylinder #1) 66 Injector (Cylinder #4) [Low] control output Injector (Cylinder #4) 67 Injector (Cylinder #5) [Low] control output Injector (Cylinder #5) 68 Crankshaft Position Sensor (CKPS) [High] signal input Crankshaft Position Sensor (CKPS) 69 Crankshaft Position Sensor (CKPS) [Low] signal input Crankshaft Position Sensor (CKPS) 70 - 　 71 - 　 72 Oil pressure switch signal input Oil Pressure Sensor (OPS) 73 - 　 74 - 　 75 Throttle Position Sensor (TPS) 1 signal input Throttle Position Sensor (TPS) 1 76 Knock Sensor (KS) [Bank 1] [Low] signal input Knock Sensor (KS) [Bank 1] 77 Knock Sensor (KS) [Bank 2] [Low] signal input Knock Sensor (KS) [Bank 2] 78 Sensor ground Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 2] 79 Rc/Rp (Pump Cell Voltage) Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 1] 80 VS+ (NERNST Cell Voltage) Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 1] 81 Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 2] signal input Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 2] 82 VS+ (NERNST Cell Voltage) Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] 83 Rc (Compensative Resistance) Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] 84 Oil Pressure Solenoid Valve control output Oil Pressure Solenoid Valve 85 Ignition Coil (Cylinder #6) control output Ignition Coil (Cylinder #6) 86 Ignition Coil (Cylinder #3) control output Ignition Coil (Cylinder #3) 87 Fuel Pressure Control Valve (FPCV) [High] control output Fuel Pressure Control Valve (FPCV) 88 Fuel Pressure Control Valve (FPCV) [Low] control output Fuel Pressure Control Valve (FPCV) 89 Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 2] Heater control output Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 2] 90 Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] Heater control output Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] 91 CVVT Oil Control Valve (OCV) [Bank 2 / Exhaust] control output CVVT Oil Control Valve (OCV) [Bank 2 / Exhaust] 92 CVVT Oil Control Valve (OCV) [Bank 1 / Exhaust] control output CVVT Oil Control Valve (OCV) [Bank 1 / Exhaust] 93 Variable Force Solenoid (VFS) [Bank 2 / Intake] control output Variable Force Solenoid (VFS) [Bank 2 / Intake] 94 Variable Force Solenoid (VFS) [Bank 1 / Intake] control output Variable Force Solenoid (VFS) [Bank 1 / Intake] 95 - 　 96 Sensor power (+5V) Throttle Position Sensor (TPS) 1 Throttle Position Sensor (TPS) 2 97 Knock Sensor (KS) [Bank 1] [High] signal input Knock Sensor (KS) [Bank 1] 98 Knock Sensor (KS) [Bank 2] [High] signal input Knock Sensor (KS) [Bank 2] 99 Sensor ground Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] 100 - 　 101 Rc (Compensative Resistance) Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 1] 102 VS-/IP- (Common ground) Heated Oxygen Sensor (HO2S) [Bank 2 / Sensor 1] 103 Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] signal input Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2] 104 VS-/IP- (Common ground) Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] 105 Rc/Rp (Pump Cell Voltage) Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1] Connector [K] Pin No Description Connected to 1 ECM ground Chassis ground 2 ECM ground Chassis ground 3 Battery power (B+) Main Relay 4 ECM ground Chassis ground 5 Battery power (B+) Main Relay 6 Battery power (B+) Main Relay 7 - 　 8 - 　 9 - 　 10 - 　 11 - 　 12 - 　 13 Sensor ground A/C Pressure Transducer (APT) 14 Immobilizer communication line Immobilizer Control Module 15 Fuel Level Sender (FLS) signal input [Fuel pump] Fuel Level Sender (FLS) 16 - 　 17 - 　 18 - 　 19 - 　 20 Sensor power (+5V) Accelerator Position Sensor (APS) 1 21 Main Relay control output Main Relay 22 - 　 23 - 　 24 - 　 25 - 　 26 - 　 27 - 　 28 Accelerator Position Sensor (APS) 2 signal input Accelerator Position Sensor (APS) 2 29 - 　 30 - 　 31 - 　 32 Fuel Level Sender (FLS) signal input [Sub Fuel Sender] Sub Fuel Level Sender 33 Fuel Pump Relay control output Fuel Pump Relay 34 - 　 35 Sensor power (+5V) A/C Pressure Transducer (APT) 36 Sensor power (+5V) Accelerator Position Sensor (APS) 2 37 - 　 38 Vehicle speed signal input VDC control module 39 - 　 40 - 　 41 Start signal input Start Relay 42 - 　 43 - 　 44 - 　 45 - 　 46 - 　 47 Sensor ground Accelerator Position Sensor (APS) 2 48 - 　 49 Brake Switch [Test] signal input Brake Switch 50 - 　 51 - 　 52 Sensor ground Accelerator Position Sensor (APS) 1 53 - 　 54 - 　 55 - 　 56 - 　 57 - 　 58 - 　 59 - 　 60 P-CAN [Low] Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector 61 - 　 62 - 　 63 - 　 64 A/C Pressure Transducer (APT) signal input A/C Pressure Transducer (APT) 65 - 　 66 - 　 67 - 　 68 - 　 69 LIN (Local Interconnect Network) Serial Bus Line Battery Sensor 70 - 　 71 Cooling Fan Relay control output Cooling Fan Relay 72 Engine speed signal output Integrated Body Control Unit (IBU) 73 - 　 74 - 　 75 - 　 76 - 　 77 P-CAN [High] Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector 78 - 　 79 Start Relay control output Start Relay 80 - 　 81 - 　 82 Accelerator Position Sensor (APS) 1 signal input Accelerator Position Sensor (APS) 1 83 Brake Switch [Light] signal input Brake Switch 84 - 　 85 - 　 86 - 　 87 - 　 88 - 　 89 - 　 90 - 　 91 - 　 ECM Terminal Input/ Output signal Connector [A] Pin No  Description Condition Type Level 1 Ignition Coil (Cylinder #4) control output Idle Pulse Vpeak = 400V Frequency : 0 - 58...

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