HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Heater 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.
·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 Heater Function | Only Air Function | Only Heater Function | Suspected Area | |||
|---|---|---|---|---|---|---|
| Temperature Switch Operation | Blower Operation | Fresh/Recirculation Function | Air Outlet Charging 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:
| Symptom | Suspected Area | Link |
|---|---|---|
| Operations are never accepted by the air conditioning control assembly. | ·
No. 1 heater control sub-assembly ·
No. 2 heater control sub-assembly ·
No. 3 heater control sub-assembly |
 201902,999999,_58,_079316,_0384897,RM100000001GYVH,
|
| Air conditioning amplifier assembly | 201902,201906,_58,_079316,_0384899,RM100000001GIVN,201906,202310,_58,_079316,_0384899,RM100000001ISKD,202310,999999,_58,_079316,_0384899,RM100000002EPUA,
|
| Symptom | Suspected Area | Link |
|---|---|---|
| Operations are never accepted by the air conditioning control assembly | No. 2 air conditioning control assembly | 201902,999999,_58,_079316,_0384897,RM100000001GYVH,
|
| Rear heater blower resistor | 201902,999999,_58,_079316,_0384877,RM100000001GIT3,
|
|
| Harness or connector | - |
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.) |
·
Warm-up control ·
Heater core closed waterway |
for LHD:201902,201906,_58,_079316,_0384874,RM100000001GISN,201906,202310,_58,_079316,_0384874,RM100000001IHVR,202310,999999,_58,_079316,_0384874,RM100000002EPU2,
|
| for RHD:201902,201906,_58,_079316,_0384875,RM100000001GISS,201906,202005,_58,_079316,_0384875,RM100000001IHW1,202005,202310,_58,_079316,_0384875,RM100000001MHUJ,202310,999999,_58,_079316,_0384875,RM100000002EPU4,
|
||
| 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,_0386654,RM100000001H89Z,
|
| 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,_0386654,RM100000001H8A2,
|
| Symptom | Suspected Area | Link |
|---|---|---|
·
No heating at all. (Airflow volume control is normal.) ·
Air outlet temperature does not increase. (Airflow volume control is normal.) |
Rear blower motor circuit | 201902,999999,_58,_079316,_0386654,RM100000001H8A4,
|
BLOWER RELATED:
| 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. |
Blower motor circuit | 201902,999999,_58,_079316,_0386654,RM100000001H8A0,
|
| 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 | 201902,999999,_58,_079316,_0386654,RM100000001H8A4,
|
INTAKE RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
·
Fresh/recirculation mode does not change. ·
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 |
201902,999999,_58,_079316,_0386654,RM100000001H8A6,
|
AIR OUTLET RELATED:
| Symptom | Suspected Area | Link |
|---|---|---|
| Air vent cannot be changed. | No. 2 heater control cable sub-assembly (for LHD) | 201902,201906,_58,_079316,_0384874,RM100000001GISL,201906,999999,_58,_079316,_0384874,RM100000001IHVT,
|
| No. 2 heater control cable sub-assembly (for RHD) | 201902,201906,_58,_079316,_0384875,RM100000001GISQ,201906,999999,_58,_079316,_0384875,RM100000001IHW3,
|
|
| Air conditioning unit (for LHD) | 201902,201906,_58,_079316,_0384874,RM100000001GISN,201906,202310,_58,_079316,_0384874,RM100000001IHVR,202310,999999,_58,_079316,_0384874,RM100000002EPU2,
|
|
| Air conditioning unit (for RHD) | 201902,201906,_58,_079316,_0384875,RM100000001GISS,201906,202005,_58,_079316,_0384875,RM100000001IHW1,202005,202310,_58,_079316,_0384875,RM100000001MHUJ,202310,999999,_58,_079316,_0384875,RM100000002EPU4,
|