SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSKIA2015SORENTO EX, 4WDREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)A/C COMPRESSORHEATING, VENTILATION AND AIR CONDITIONING - GENERAL INFORMATIONTROUBLESHOOTINGPROBLEM SYMPTOMS TABLE
2015 Kia Sorento EX, 4WD

Problem Symptoms Table

2015 Kia Sorento EX, 4WDSECTION Problem Symptoms Table
TEMPERATURE AND PRESSURE STANDARDS

Relative Humidity (%) Ambient Air Temperature Maximum Low-Side Pressure Maximum Right Center Air Outlet Temperature Maximum High-Side Pressure
°F °C PSI KPA °F °C PSI KPA
20 70 21 32 221 43 6 176 1207
80 27 32 221 44 7 225 1551
90 32 32 221 50 10 275 1896
100 38 33 228 61 11 275 1896
30 70 21 32 221 45 7 190 1310
80 27 32 221 47 8 235 1620
90 32 34 234 54 12 290 2000
100 38 38 262 57 14 310 2137
40 70 21 32 221 46 8 210 1448
80 27 32 221 50 10 255 1758
90 32 37 255 57 14 305 2103
100 38 44 303 63 17 345 2379
50 70 21 32 221 48 9 226 1551
80 27 34 234 53 12 270 1862
90 32 41 283 60 16 325 2241
100 38 49 338 69 21 380 2620
60 70 21 32 221 52 11 255 1758
80 27 37 255 56 13 290 2000
90 32 44 303 63 17 340 2344
100 38 55 379 75 24 395 2724
70 70 21 32 221 52 11 255 1758
80 27 40 276 58 15 305 2103
90 32 48 331 67 19 355 2448
80 70 21 36 248 53 12 270 1862
80 27 43 296 62 17 320 2206
90 32 52 356 70 21 370 2651
90 70 21 40 276 55 13 285 1965
80 27 47 324 65 18 335 2310

Before replacing or repairing air conditioning components, first determine if the malfunction is due to the refrigerant charge, air flow or compressor.

Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in order. If necessary, replace these parts.

After correcting the malfunction, check the complete system to ensure that performance is satisfactory.

SYMPTOM DESCRIPTION

Symptom Suspected Area
No blower operation 1. Blower fuse
2. Blower relay
3. Blower motor
4. Power mosfet
5. Blower speed control switch
6. Wire harness
No air temperature control 1. Engine coolant capacity
2. Heater control assembly
No compressor operation 1. Refrigerant capacity
2. A/C fuse
3. Magnetic clutch
4. Compressor
5. A/C pressure transducer
6. A/C switch
7. Evaporator temperature sensor
8. Wire harness
Vented air not cold 1. Refrigerant capacity
2. Refrigerant pressure
3. Drive belt
4. Magnetic clutch
5. Compressor
6. A/C pressure transducer
7. Evaporator temperature sensor
8. A/C switch
9. Heater control assembly
10. Wire harness
Insufficient cooling 1. Refrigerant capacity
2. Drive belt
3. Magnetic clutch
4. Compressor
5. Condenser
6. Expansion valve
7. Evaporator
8. Refrigerant lines
9. A/C pressure transducer
10. Heater control assembly
No engine idle-up when A/C switch ON 1. Engine ECM
2. Wire harness
No air inlet control 1. Heater control assembly
No mode control 1. Heater control assembly
2. Mode actuator
No cooling fan operation 1. Cooling fan fuse
2. Fan motor
3. Engine ECM
4. Wire harness
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.