RM35X0E _58 Vehicle Interior _079316 HEATING / AIR CONDITIONING _0386651 AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) T

HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) PROBLEM SYMPTOMS TABLE

HINT:: ·

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.

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 operation may not be consistent with the actual problem (eg: the cooling performance of the air conditioning 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 conditioning 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 conditioning is poor or there is a foul odor, check clogging in the clean air filter.

Common Function of Cooling and Heater Function				Only Air Function	Only Heater Function	Suspected Area
A/C Switch Operation	Blower Operation	Fresh/Recirculation Function	Air Outlet Charging Function	Only Air Function	Only Heater Function	Suspected Area
○	○	○	○	X	○	Refer to "COOLING FUNCTION:"
○	○	○	○	○	X	Refer to "HEATER FUNCTION:"
X	○	○	○	X	X	Refer to "DISPLAY RELATED:"
○	X	○	○	X	X	Refer to "BLOWER RELATED:"
○	○	X	○	X	X	Refer to "INTAKE RELATED:"
○	○	○	X	X	X	Refer to "AIR OUTLET RELATED:"
X	X	X	X	X	X	Air conditioning amplifier or air conditioning unit assembly is defective

DISPLAY RELATED:

for Front:
Symptom	Suspected Area	Link
Operations are never accepted by the air conditioning control assembly. (With the exception of the switch indicator, everything is turned off.)	· LIN communication between air conditioning amplifier assembly and air conditioning control assembly · Air conditioning amplifier assembly (+B and GND circuit) · Air conditioning control assembly	201906,999999,_58,_079316,_0386651,RM100000001IVIR,
Operations are never accepted by the air conditioning control assembly. (LCD panel is displayed.)	Air conditioning control assembly	201906,999999,_58,_079316,_0384897,RM100000001ISJP,
Operations are never accepted by the air conditioning control assembly only immediately after starting the engine. (LCD panel is displayed.) (Only AUTO indicator illuminates.) (A/C stop light does not illuminate.)	Refer to "INITIALIZATION"	201902,999999,_58,_079316,_0386651,RM100000001GSS4,
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) · Refrigerant pressure (low pressure) · Low ambient temperature (including thermistor assembly)	201902,999999,_58,_079316,_0386651,RM100000001GSSU,

for Rear (w/ Integration Control Panel):
Symptom	Suspected Area	Link
Operations are never accepted by the integration control and panel assembly. (With the exception of the switch indicator, everything is turned off.)	· LIN communication between air conditioning amplifier assembly and air conditioning control assembly · Air conditioning amplifier assembly (+B2 and GND2 circuit) (for Rear Automatic Air Conditioning) · Integration control and panel assembly	201906,999999,_58,_079316,_0386651,RM100000001IVIR,
Operations are never accepted by the integration control and panel assembly. (LCD panel is displayed.)	Integration control and panel assembly	201906,999999,_58,_079316,_0384898,RM100000001ISJX,

COOLING FUNCTION:

for Front:
Symptom	Suspected Area	Link
No cooling at all. (Air is discharged.)	· Compressor with magnet clutch assembly · Refrigerant pressure · Lack of refrigerant gas · Dirty cooler condenser · Cooling fan system · Air mix damper and link operation (jamming) · No. 1 cooler thermistor (determined as cold, conflicting with actual temperature) · Warm air flow	201906,999999,_58,_079316,_0386651,RM100000001IFO0,
· Cooling is poor. · Takes time to cool down.	· Compressor with magnet clutch assembly · Excessive refrigerant · Lack of refrigerant gas · Dirty cooler condenser · Cooling fan system · Air mix damper and link operation (jamming) · Automatic light control sensor · Warm air flow	201906,999999,_58,_079316,_0386651,RM100000001IFO6,
Refrigerant pressure does not decrease when A/C switch is off	Compressor with magnet clutch assembly circuit	201902,999999,_58,_079316,_0386651,RM100000001GWHA,

for Rear (w/ Integration Control Panel (for Rear Automatic Air Conditioning)):
Symptom	Suspected Area	Link
No cooling at all. (Air is discharged.)	· Air mix damper and link operation (jamming) · No. 2 cooler thermistor (determined as cold, conflicting with actual temperature) · Cooler expansion valve · Warm air flow	201906,999999,_58,_079316,_0386651,RM100000001IFO0,
· Cooling is poor. · Takes time to cool down.	· Air mix damper and link operation (jamming) · No. 2 cooler thermistor · Cooler expansion valve · Warm air flow	201906,999999,_58,_079316,_0386651,RM100000001IFO6,

for Rear (w/ Integration Control Panel (for Rear Automatic Cooler)):
Symptom	Suspected Area	Link
No cooling at all. (Air is discharged.)	· No. 2 cooler thermistor (determined as cold, conflicting with actual temperature) · Cooler expansion valve	201902,999999,_58,_079316,_0386651,RM100000001GSSC,
· Cooling is poor. · Takes time to cool down.	No. 2 cooler thermistor	201902,999999,_58,_079316,_0384893,RM100000001GIV2,
	Cooler expansion valve	201902,999999,_58,_079316,_0389160,RM100000001H6GB,
	Rear blower motor circuit	201906,999999,_58,_079316,_0386651,RM100000001IFM5,

HEATER FUNCTION:

for Front:
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	201906,999999,_58,_079316,_0386651,RM100000001IFO8,
Viscous heater with magnet clutch assembly does not operate when heater switch assembly is pushed while engine is cold (w/ Viscous Heater).	Viscous heater circuit	201902,999999,_58,_079316,_0386651,RM100000001GWHC,
Engine idle up does not occur when idle up switch is pushed while engine is cold (w/ Idle Up Switch).	Idle up switch circuit	201902,999999,_58,_079316,_0386651,RM100000001GWHB,
Engine coolant does not warm up quickly when engine is cold (PTC heater does not operate) (w/ PTC Heater).	PTC heater circuit	201902,999999,_58,_079316,_0386651,RM100000001GWM9,

for Rear (w/ Integration Control Panel (for Rear Automatic Air Conditioning)):
Symptom	Suspected Area	Link
· No heating at all. (Airflow volume control is normal.) · Air outlet temperature does not increase. (Airflow volume control is normal.)	· Air mix damper and link operation (jamming) · Warm-up control · Heater core closed waterway	201906,999999,_58,_079316,_0386651,RM100000001IFO8,

BLOWER RELATED:

for Front:
Symptom	Suspected Area	Link
Blower does not operate at all. (No air comes out.)	· Blower with fan motor sub-assembly (+B and GND circuit) · Control signal malfunction between air conditioning amplifier assembly and blower with fan motor sub-assembly · Blower with fan motor sub-assembly · Air conditioning amplifier assembly · Warm-up control · Water temperature sensor	201906,999999,_58,_079316,_0386651,RM100000001IFO9,
Blower airflow volume cannot be changed.	· Air conditioning amplifier assembly · Blower with fan motor sub-assembly · Evaporator or heater core fin clogging · Clean air filter clogging	201902,999999,_58,_079316,_0386651,RM100000001GSSS,
· Blower airflow volume is continuously weak. · Blower airflow volume is sometimes weak.	· Communication signal malfunction between air conditioning amplifier 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 · Aspirator dropped	201902,999999,_58,_079316,_0386651,RM100000001GST1,
Airflow does not come out of certain air outlets.	Refer to "INITIALIZATION"	201902,999999,_58,_079316,_0386651,RM100000001GSS4,
Airflow does not come out of certain air outlets.	Visual check of air conditioning unit (caught foreign objects, etc.)	-

for Rear (w/ Integration Control Panel):
Symptom	Suspected Area	Link
· Blower does not operate at all. (No air comes out.) · Blower airflow volume cannot be changed. · Blower airflow volume is continuously weak. · Blower airflow volume is sometimes weak.	Rear blower motor circuit	201906,999999,_58,_079316,_0386651,RM100000001IFM5,

INTAKE RELATED:

Symptom	Suspected Area	Link
· Fresh/recirculation mode changes without permission. · Fresh/recirculation mode light blinks.	· Automatic function set to ON in customize setting · Change in fresh air temperature · Refrigerant pressure drop · Pressure sensor circuit · High engine coolant temperature	201906,999999,_58,_079316,_0386651,RM100000001IFOA,
· 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	201906,999999,_58,_079316,_0386651,RM100000001IFOB,

AIR OUTLET RELATED:

for Front:
Symptom	Suspected Area	Link
Air vent cannot be changed. (Display changes.)	· Malfunction in one of the servo motors · Mode damper and link operation (jamming) · Air conditioning unit	201906,999999,_58,_079316,_0386651,RM100000001IWKV,
Air vent cannot be changed. (Display does not change.)	Air conditioning control assembly	201906,999999,_58,_079316,_0384897,RM100000001ISJP,

for Rear (w/ Integration Control Panel (for Rear Automatic Air Conditioning)):
Symptom	Suspected Area	Link
Air vent cannot be changed. (Display changes.)	· Malfunction in one of the servo motors · Mode damper and link operation (jamming) · Rear cooling unit assembly	201906,999999,_58,_079316,_0386651,RM100000001IWKV,
Air vent cannot be changed. (Display does not change.)	Integration control and panel assembly	201906,999999,_58,_079316,_0384898,RM100000001ISJX,

for Rear (w/ Integration Control Panel (for Rear Automatic Cooler)):
Symptom	Suspected Area	Link
Air vent cannot be changed. (Display changes.)	Rear cooling unit assembly	201906,999999,_58,_079316,_0384876,RM100000001IHW8,
Air vent cannot be changed. (Display does not change.)	Integration control and panel assembly	201906,999999,_58,_079316,_0384898,RM100000001ISJX,

DEFOGGER RELATED:

Symptom	Suspected Area	Link
Front window fogging.	· Compressor with magnet clutch assembly · Lack of refrigerant gas · Cooler expansion valve (opened too far) · Mode damper servo · Mode damper and link operation (jamming)	201902,999999,_58,_079316,_0386651,RM100000001GSSZ,