Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. 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 if necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Air conditioning system (for Front)
AIR CONDITIONING SYSTEM (FOR FRONT) - PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | Refer to |
|---|---|---|
| No functions of Air Conditioning Control panel operate | LIN communication line | - |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| No functions of Air Conditioning system operate | A/C NO. 2 fuse | - |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Wire harness or connector | - | |
| Airflow Control: No blower motor control (Blower motor does not operate) | HTR H-fuse | - |
| Blower motor circuit | BLOWER MOTOR CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| Wire harness or connector | - | |
| Airflow Control: No blower motor control (Blower motor does not change speed) | Blower motor circuit | BLOWER MOTOR CIRCUIT |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| Temperature Control: No cool air comes out | Refrigerant volume | REFRIGERANT |
| Refrigerant pressure | REFRIGERANT | |
| Air conditioning pressure sensor | DTC B1423/23 PRESSURE SENSOR CIRCUIT | |
| Air conditioning compressor magnetic clutch circuit | AIR CONDITIONING COMPRESSOR MAGNETIC CLUTCH CIRCUIT | |
| Compressor lock sensor circuit | DTC B1422/22 COMPRESSOR LOCK SENSOR CIRCUIT | |
| Compressor solenoid circuit | DTC B1451/51 COMPRESSOR SOLENOID CIRCUIT | |
| Driver side air mix damper control servo motor circuit | DTC B1446/46 AIR MIX DAMPER CONTROL SERVO MOTOR CIRCUIT (DRIVER SIDE) | |
| Passenger side air mix damper control servo motor circuit | DTC B1441/41 AIR MIX DAMPER CONTROL SERVO MOTOR CIRCUIT (PASSENGER SIDE) | |
| Evaporator temperature sensor circuit | DTC B1413/13 EVAPORATOR TEMPERATURE SENSOR CIRCUIT | |
| Room temperature sensor circuit | DTC B1411/11 ROOM TEMPERATURE SENSOR CIRCUIT | |
| Ambient temperature sensor circuit | DTC B1412/12 AMBIENT TEMPERATURE SENSOR CIRCUIT | |
| Expansion valve | - | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| ECM | HOW TO PROCEED WITH TROUBLESHOOTING | |
| LIN communication line | - | |
| CAN communication system | PROBLEM SYMPTOMS TABLE | |
| Temperature Control: No warm air comes out | Driver side air mix damper control servo motor circuit | DTC B1446/46 AIR MIX DAMPER CONTROL SERVO MOTOR CIRCUIT (DRIVER SIDE) |
| Passenger side air mix damper control servo motor circuit | DTC B1441/41 AIR MIX DAMPER CONTROL SERVO MOTOR CIRCUIT (PASSENGER SIDE) | |
| Air conditioning harness | DTC B1497/97 BUS IC COMMUNICATION MALFUNCTION | |
| Room temperature sensor circuit | DTC B1411/11 ROOM TEMPERATURE SENSOR CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| ECM | HOW TO PROCEED WITH TROUBLESHOOTING | |
| LIN communication line | - | |
| CAN communication system | PROBLEM SYMPTOMS TABLE | |
| Temperature Control: Output air is warmer or cooler than set temperature or response is slow | Driver side solar sensor circuit | DTC B1424/24 SOLAR SENSOR CIRCUIT (DRIVER SIDE) |
| Passenger side solar sensor circuit | DTC B1421/21 SOLAR SENSOR CIRCUIT (PASSENGER SIDE) | |
| Room temperature sensor circuit | DTC B1411/11 ROOM TEMPERATURE SENSOR CIRCUIT | |
| Air inlet damper control servo motor circuit | DTC B1442/42 AIR INLET DAMPER CONTROL SERVO MOTOR CIRCUIT | |
| Heater radiator | - | |
| Expansion valve | - | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| ECM | HOW TO PROCEED WITH TROUBLESHOOTING | |
| LIN communication line | - | |
| CAN communication system | PROBLEM SYMPTOMS TABLE | |
| Temperature Control: No temperature control (Only Max. cool or Max. warm) | Driver side solar sensor circuit | DTC B1424/24 SOLAR SENSOR CIRCUIT (DRIVER SIDE) |
| Passenger side solar sensor circuit | DTC B1421/21 SOLAR SENSOR CIRCUIT (PASSENGER SIDE) | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| LIN communication line | - | |
| No air inlet control | Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT |
| Air inlet damper control servo motor circuit | DTC B1442/42 AIR INLET DAMPER CONTROL SERVO MOTOR CIRCUIT | |
| Evaporator temperature sensor circuit | DTC B1413/13 EVAPORATOR TEMPERATURE SENSOR CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| No air flow mode control | Air outlet damper control servo motor circuit | DTC B1443/43 AIR OUTLET DAMPER CONTROL SERVO MOTOR CIRCUIT |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Engine idle up does not occur, or is continuous | Air conditioning compressor magnetic clutch circuit | AIR CONDITIONING COMPRESSOR MAGNETIC CLUTCH CIRCUIT |
| Compressor lock sensor circuit | DTC B1422/22 COMPRESSOR LOCK SENSOR CIRCUIT | |
| Compressor solenoid circuit | DTC B1451/51 COMPRESSOR SOLENOID CIRCUIT | |
| Air conditioning control | HEATER CONTROL PANEL POWER SOURCE CIRCUIT | |
| LIN communication line | - | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| ECM | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Air Conditioning indicator blinking | Compressor solenoid circuit | DTC B1451/51 COMPRESSOR SOLENOID CIRCUIT |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Diagnostic trouble codes are not recorded. Set mode is cleared when ignition switch turned off | Air conditioning amplifier | TERMINALS OF ECU |
| Back-up power source circuit | BACK-UP POWER SOURCE CIRCUIT |
Air conditioning system (for Rear)
AIR CONDITIONING SYSTEM (FOR REAR) - PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | Refer to |
|---|---|---|
| No functions of rear Air Conditioning panel operate | LIN communication line | - |
| Rear air conditioning control | REAR AIR CONDITIONING CONTROL PANEL CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| No functions of rear Air Conditioning system operate | A/C NO.2 fuse | - |
| Rear air conditioning control | REAR AIR CONDITIONING CONTROL PANEL CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Wire harness or connector | - | |
| Airflow Control: No blower control (Blower motor does not operate) | RR CLR H-fuse | - |
| Rear blower motor circuit | REAR BLOWER MOTOR CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Rear air conditioning control | REAR AIR CONDITIONING CONTROL PANEL CIRCUIT | |
| Wire harness or connector | - | |
| Airflow Control: No blower control (Blower motor does not change speed) | Rear blower motor circuit | REAR BLOWER MOTOR CIRCUIT |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Rear air conditioning control | REAR AIR CONDITIONING CONTROL PANEL CIRCUIT | |
| Temperature Control: No cool air comes out | Refrigerant volume | REFRIGERANT |
| Refrigerant pressure | REFRIGERANT | |
| Air conditioning pressure sensor | DTC B1423/23 PRESSURE SENSOR CIRCUIT | |
| Compressor and magnetic clutch circuit | DTC B1451/51 COMPRESSOR SOLENOID CIRCUIT | |
| Rear air mix damper control servo motor circuit | DTC B1447/47 REAR AIR MIX DAMPER CONTROL SERVO MOTOR CIRCUIT | |
| Rear evaporator temperature sensor circuit | DTC B1417/17 REAR EVAPORATOR TEMPERATURE SENSOR CIRCUIT | |
| Rear room temperature sensor circuit* | DTC B1419/19 REAR ROOM TEMPERATURE SENSOR CIRCUIT | |
| Ambient temperature sensor circuit* | DTC B1412/12 AMBIENT TEMPERATURE SENSOR CIRCUIT | |
| LIN communication line | - | |
| Rear air conditioning control | REAR AIR CONDITIONING CONTROL PANEL CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Temperature Control: No warm air comes out | Rear air mix damper control servo motor circuit | DTC B1447/47 REAR AIR MIX DAMPER CONTROL SERVO MOTOR CIRCUIT |
| Rear air conditioning harness | - | |
| Rear room temperature sensor circuit* | DTC B1419/19 REAR ROOM TEMPERATURE SENSOR CIRCUIT | |
| Air conditioning amplifier | TERMINALS OF ECU | |
| Rear air conditioning control | REAR AIR CONDITIONING CONTROL PANEL CIRCUIT | |
| LIN communication line | - | |
| HINT: *: w/Rear Automatic Air Conditioning |
||