HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for HV Model (8ZR-FXE)) PROBLEM SYMPTOMS TABLE
- NOTICE:
- ·
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.
·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.
·w/ S-FLOW Control:
If no air is blowing from the rear seat registers even when the air conditioning is set to ON, it is possible that the rear seat mode servo is closed due to S-FLOW control.
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.
·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 Suspected Area A/C Switch Operation Blower Operation Recirculation/Fresh Function Air Outlet Changing Function x o o o x x Go to "Problem Symptoms Table: Air Conditioning Control" o o o o x o Go to "Problem Symptoms Table: Cooling Function" o o o o o x Go to "Problem Symptoms Table: Heater Function" o x o o x x Go to "Problem Symptoms Table: Blower Control" o o x o x x Go to "Problem Symptoms Table: Air Inlet Control" o o o x x x Go to "Problem Symptoms Table: Air Outlet Control" x x x x x x Air Conditioning Amplifier Assembly or Air Conditioner Unit Assembly is Defective
AIR CONDITIONING CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
| Air conditioning system cannot be operated using air conditioning control assembly
(With the exception of the switch indicators, no inputs are reflected when other switches operated) |
·
LIN communication line (air conditioning amplifier assembly - air conditioning control assembly) ·
+B or ground in air conditioning amplifier assembly circuit ·
Air conditioning amplifier assembly ·
Air conditioning control assembly ·
Harness or connector |
 202304,999999,_58,_080733,_0598792,RM100000002B61C,
|
| Air conditioning system cannot be operated using air conditioning control assembly
(Air conditioning system display operates) |
·
Air conditioning control assembly |
202304,999999,_58,_080733,_0393743,RM100000002B1IV,
|
| A/C switch indicator does not illuminate | ·
Air conditioning amplifier assembly ·
Air conditioning control assembly ·
Damper and damper link ·
Refrigerant pressure ·
Ambient temperature |
202304,999999,_58,_080733,_0598792,RM100000002B618,
|
COOLING FUNCTION
| Symptom | Suspected Area | Link |
|---|---|---|
| Cool air is not discharged
(Air is discharged) |
·
Compressor with motor assembly ·
Refrigerant pressure ·
Refrigerant volume ·
Cooler condenser assembly ·
Cooling fan system ·
Damper and damper link ·
Evaporator temperature sensor |
202304,999999,_58,_080733,_0598792,RM100000002B619,
|
·
Cooling effectiveness is poor ·
Cooling response is slow |
·
Drive mode select switch (combination switch assembly) ·
Compressor with motor assembly ·
Refrigerant volume ·
Cooler condenser assembly ·
Cooling fan system ·
Damper and damper link ·
Solar sensor (automatic light control sensor) ·
High inlet air temperature ·
Harness or connector |
202304,999999,_58,_080733,_0598792,RM100000002B61A,
|
HEATER FUNCTION
| Symptom | Suspected Area | Link |
|---|---|---|
·
No warm air comes out (Blower control is normal) ·
Outlet air temperature does not increase (Blower control is normal) |
·
Engine coolant temperature ·
Refrigerant volume ·
Damper and damper link ·
Warm-up control ·
Heater radiator unit sub-assembly |
202304,999999,_58,_080733,_0598792,RM100000002B61B,
|
BLOWER CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
| No air flows from the registers | ·
Blower motor with fan sub-assembly ·
Air conditioning amplifier assembly ·
Warm-up control ·
Engine coolant temperature sensor ·
Harness or connector |
202304,999999,_58,_080733,_0598792,RM100000002B61E,
|
| Airflow volume cannot be changed | ·
Air conditioning amplifier assembly ·
Blower motor with fan sub-assembly ·
Blower motor control ·
Harness or connector |
202304,202406,_58,_080733,_0598792,RM100000002B616,202406,999999,_58,_080733,_0598792,RM100000002N5ME,
|
·
Airflow volume is constantly low ·
Airflow volume sometimes becomes low |
·
Drive mode select switch (combination switch assembly) ·
Blower motor with fan sub-assembly ·
Air conditioning amplifier assembly ·
Clean air filter ·
Evaporator or heater radiator fins ·
Evaporator temp. sensor ·
Aspirator pipe not connected properly ·
Harness or connector |
202304,999999,_58,_080733,_0598792,RM100000002B61F,
|
AIR INLET CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
·
Recirculation/fresh mode changes without permission ·
Recirculation/fresh mode light blinks |
·
Ambient temperature ·
Refrigerant pressure ·
Air conditioning pressure sensor circuit ·
Engine coolant temperature |
202304,999999,_58,_080733,_0598792,RM100000002B61G,
|
·
Air inlet mode cannot be changed between recirculation/fresh ·
Exhaust gas odors can be smelled when air inlet mode set to recirculation mode |
·
Servo motor ·
Damper and damper link ·
Engine coolant temperature ·
Air conditioner unit assembly |
202304,999999,_58,_080733,_0598792,RM100000002B61H,
|
AIR OUTLET CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
| Air outlet mode cannot be changed
(Air outlet display changes) |
·
Servo motor ·
Damper link ·
Air conditioner unit assembly |
202304,999999,_58,_080733,_0598792,RM100000002B61I,
|
| Air outlet mode cannot be changed
(Air outlet display does not change) |
·
Air conditioning control assembly |
202304,999999,_58,_080733,_0393743,RM100000002B1IV,
|
DEFROSTER CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
| Windshield frequently fogs up | ·
Compressor with motor assembly ·
Refrigerant volume ·
Servo motor ·
Damper and damper link ·
Cooler expansion valve ·
Mechanical locking of damper and damper link |
202304,999999,_58,_080733,_0598792,RM100000002B61D,
|