HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Gasoline Model) PROBLEM SYMPTOMS TABLE
- NOTICE:
- ·
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
·Inspect the fuses and relays related to this system before inspecting the suspected areas below.
·The air conditioning system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.
·Perform the inspection when the vehicle is at ambient temperature. If this is not done, there could be a risk of injury depending on the location being inspected.
·If the main body ECU (multiplex network body ECU), certification ECU (smart key ECU assembly) or electrical key transmitter sub-assembly is replaced, refer to Service Bulletin.
·If the following system is operated when the auxiliary battery voltage is low, due to the electrical load limit control that gives voltage supply priority to the power steering system, the following system may not operate. In this case, check the vehicle control history of the power steering system and check that "Battery Voltage Drop: X208F" is not stored before proceeding with troubleshooting.
-Climate control seat system
-Seat heater system
-Mirror heater system
-Heated steering wheel system
-PTC heater function
VEHICLE CHECK ITEMS
- HINT:
- ·
You can reduce the number of systems to check by using the results of the following operation check.
·Perform the following checks based on Customer Feedback and the vehicle condition.
·The customer's opinion may not be consistent with the actual problem (eg: the cooling performance of the air conditioner is bad → actually, the wind volume is weak). It is important to check the problem symptoms accurately and judge correctly based on various sources of information.
·Judgment as to whether the air conditioner panel is normal or abnormal can be judged by checking if the indicator illuminates or turns off when the switch is operated.
·During servo motor initialization, the AUTO indicator light comes on, and then goes off when initialization has finished.
·If the performance of the air conditioner is poor or there is a foul odor, check for clogging in the clean air filter.
- Malfunction Operation/Function:
Common Function of Cool and Heater Function Only Cool Air Function Only Heater Function Only Remote Air Conditioning System Suspected Area A/C Switch Operation Blower Operation Recirculation/Fresh Function Air Outlet Changing Function x o o o x x o Go to "Problem Symptoms Table: Air Conditioning Control" o o o o x o o Go to "Problem Symptoms Table: Cooling Function" o o o o o x o Go to "Problem Symptoms Table: Heater Function" o x o o x x o Go to "Problem Symptoms Table: Blower Control" o o x o x x o Go to "Problem Symptoms Table: Air Inlet Control" o o o x x x o Go to "Problem Symptoms Table: Air Outlet Control" x x x x x x o Air Conditioning Amplifier Assembly or Air Conditioning Assembly is Defective o o o o o o x Go to "Problem Symptoms Table: Remote Air Conditioning System"
DISPLAY RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
| Operations are never accepted by the air conditioning control assembly (for VIP Captain Seat).
(With the exception of the switch indicators, no inputs are reflected when other switches operated) |
·
LIN communication between air conditioning amplifier assembly and air conditioning control assembly ·
Air conditioning amplifier assembly (+B and GND circuit) ·
Air conditioning control assembly |
 202409,999999,_58,_083104,_0402828,RM100000002NSIL,
|
| Operations are never accepted by the air conditioning control assembly.
(LCD panel displayed) |
Air conditioning control assembly | 201910,999999,_58,_083104,_0403077,RM100000001JNHR,
|
| Operations are never accepted by the air conditioning control assembly only immediately after starting the engine.
(LCD panel is displayed.) (Only AUTO indicator illuminates.) |
Refer to "INITIALIZATION" | 202409,999999,_58,_083104,_0402828,RM100000002NSHC,
|
| A/C switch display turns off. | ·
Air conditioning amplifier assembly ·
A/C switch (air conditioning control assembly) ·
Malfunction in one of the servo motors (initialization incomplete) ·
Damper and link operation (jamming) ·
Low ambient temperature (including thermistor assembly) |
202409,999999,_58,_083104,_0402828,RM100000002NSIH,
|
COOLING FUNCTION:
| Symptom | Suspected Area | Link |
|---|---|---|
| No cool air comes out
(Air is discharged.) |
·
Compressor with pulley assembly ·
Refrigerant pressure ·
Lack of refrigerant gas ·
Dirty cooler condenser ·
Cooling fan system malfunction ·
Air mix damper and link operation (jamming) ·
No. 1 cooler thermistor (determined as cold, conflicting with actual temperature) ·
Warm air flow |
202409,999999,_58,_083104,_0402828,RM100000002NSII,
|
·
Cooling is poor. ·
Takes time to cool down. |
·
ECO drive mode function (air flow volume is restricted due to ECO drive mode being selected) ·
Compressor with pulley assembly ·
Excessive refrigerant ·
Lack of refrigerant gas ·
Dirty cooler condenser ·
Cooling fan system malfunction ·
Air mix damper and link operation (jamming) ·
Automatic light control sensor (for Automatic Air Conditioning System) ·
Warm air flow |
202409,999999,_58,_083104,_0402828,RM100000002NSIJ,
|
| Different temperature for left and right air outlets.
(Left and right stand-alone type.) |
·
Compressor with pulley assembly ·
Lack of refrigerant gas ·
Air mix damper and link operation (jamming) ·
Automatic light control sensor (for Automatic Air Conditioning System) |
202409,999999,_58,_083104,_0402828,RM100000002NSIS,
|
HEATER FUNCTION:
| Symptom | Suspected Area | Link |
|---|---|---|
·
No heating at all. (Airflow volume control is normal.) ·
Air outlet temperature does not increase. (Airflow volume control is normal.) |
·
Low engine coolant temperature ·
Air mix damper and link operation (jamming) ·
Warm-up control ·
Heater core closed waterway |
202409,999999,_58,_083104,_0402828,RM100000002NSIK,
|
| Different temperature for left and right air outlets.
(Either left or right is warm.) |
·
Air mix damper and link operation (jamming) ·
Heater core closed waterway |
202409,999999,_58,_083104,_0402828,RM100000002NSIS,
|
BLOWER RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
| Blower does not operate at all.
(Air does not blow from registers) |
·
Blower motor with fan sub-assembly ·
Air conditioning amplifier assembly ·
Warm-up control ·
Engine coolant temperature sensor ·
Water temperature sensor ·
Harness or connector |
202409,999999,_58,_083104,_0402828,RM100000002NSIN,
|
| Blower airflow volume cannot be changed. | ·
Air conditioning amplifier assembly ·
Blower motor with fan sub-assembly ·
Air conditioning control assembly ·
Harness or connector |
202409,999999,_58,_083104,_0402828,RM100000002NSIE,
|
·
Blower airflow volume is continuously weak. ·
Blower airflow volume is sometimes weak. |
·
Communication signal malfunction between air conditioning assembly and blower with fan motor sub-assembly ·
Blower with fan motor sub-assembly ·
Air conditioning amplifier assembly ·
Evaporator or heater core fin clogging ·
Clean air filter clogging ·
ECO drive mode function (air flow volume is restricted due to ECO drive mode being selected) ·
Aspirator dropped |
202409,999999,_58,_083104,_0402828,RM100000002NSIO,
|
| Airflow does not come out of certain air outlets. | Refer to "INITIALIZATION" | 202405,999999,_56,_083087,_0402655,RM100000002LW9U,
|
| Visual check of air conditioning unit (caught foreign objects, etc.) | - |
INTAKE RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
·
Fresh/recirculation mode changes without permission. ·
Fresh/recirculation mode light blinks. |
·
Customize setting (for Automatic Air Conditioning System) ·
Ambient temperature ·
Refrigerant pressure ·
Air conditioning pressure sensor circuit ·
Engine coolant temperature |
202409,999999,_58,_083104,_0402828,RM100000002NSIP,
|
·
Fresh/recirculation mode does not change. ·
Fresh/recirculation mode does not change automatically. ·
Exhaust gas odor when set to recirculation. |
·
Blower servo motor ·
Blower damper and link operation (jamming) ·
Foreign object jammed in door ·
Air conditioning radiator assembly ·
High engine coolant temperature |
202409,999999,_58,_083104,_0402828,RM100000002NSIQ,
|
AIR OUTLET RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
| Air vent cannot be changed.
(Air outlet display changes) |
·
Malfunction in one of the servo motors ·
Mode damper and link operation (jamming) ·
Air conditioning unit |
202409,999999,_58,_083104,_0402828,RM100000002NSIR,
|
| Air vent cannot be changed.
(Air outlet display does not change) |
Air conditioning control assembly | 201910,999999,_58,_083104,_0403077,RM100000001JNHR,
|
DEFOGGER RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
| Front glass fogs up
(Does not cool) |
·
Compressor with pulley assembly ·
Lack of refrigerant gas ·
Cooler expansion valve (opened too far) ·
Mode servo motor ·
Mode damper and link operation (jamming) |
202409,999999,_58,_083104,_0402828,RM100000002NSIM,
|
OPERATION RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
| Voice recognition function does not operated (air conditioning system is normally) | CAN communication system (for GTMC Made) | 202409,999999,_57,_083091,_0694856,RM100000002NTA4,
|
| CAN communication system (for SFTM Made) | 202409,999999,_57,_083091,_0694854,RM100000002NUBH,
|
|
| Audio and visual system | 202405,999999,_56,_083086,_0593011,RM100000002LVVR,
|
|
| Remote air conditioning system does not operate. | Telematics system | 202409,999999,_58,_083104,_0402828,RM100000002NSHC,
|