Problem Symptoms Table
WARNING: This page is about a different variant/trim than selected.
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
| Symptom | Suspected Area | See |
|---|---|---|
| No functions of air conditioning control panel operate | LIN communication line | - |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| No functions of air conditioning system operate | A/C NO. 2 fuse | - |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Wire harness or connector | - | |
| Airflow Control: No blower control (Blower motor does not operate) | HTR fuse | - |
| Blower motor circuit | Refer to Blower Motor Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| Wire harness or connector | - | |
| Airflow Control: No blower control (Blower motor does not change speed) | Blower motor circuit | Refer to Blower Motor Circuit |
| Air conditioning amplifier | Refer to REMOVAL | |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| Temperature Control: No cool air comes out | Refrigerant volume | Refer to REPLACEMENT |
| Refrigerant pressure | Refer to REPLACEMENT | |
| Air conditioning pressure sensor | Refer to DTC B1423/23: Pressure Sensor Circuit | |
| Air flow circuit | Refer to DTC B1479/79: Flow Sensor Circuit | |
| Air conditioning compressor magnetic clutch circuit | Refer to Air Conditioning Compressor Magnetic Clutch Circuit | |
| Compressor lock sensor circuit | Refer to DTC B1422/22: Compressor Lock Sensor Circuit | |
| Compressor solenoid circuit | Refer to DTC B1451/51: Compressor Solenoid Circuit | |
| Air mix damper control servo motor circuit | Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) | |
| Evaporator temperature sensor circuit | Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit | |
| Ambient temperature sensor circuit | Refer to DTC B1412/12: Ambient Temperature Sensor Circuit | |
| Expansion valve | - | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| ECM (for 2GR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM (for 1AR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| LIN communication line | - | |
| CAN communication system | Refer to PROBLEM SYMPTOMS TABLE | |
| Temperature Control: No warm air comes out | Air mix damper control servo motor circuit | Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) |
| Air conditioning harness | - | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| ECM (2GR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM (1AR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| LIN communication line | - | |
| CAN communication system | Refer to PROBLEM SYMPTOMS TABLE | |
| Temperature Control: Output air is warmer or cooler than set temperature or response is slow | Air inlet damper control servo motor circuit | Refer to DTC B1442/42: Air Inlet Damper Control Servo Motor Circuit |
| Heater radiator | - | |
| Expansion valve | - | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| ECM (2GR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM (1AR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| LIN communication line | - | |
| CAN communication system | Refer to PROBLEM SYMPTOMS TABLE | |
| Temperature Control: No temperature control (Only Max. cool or Max. warm) | Air conditioning amplifier | Refer to REMOVAL |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| LIN communication line | - | |
| No air inlet control | Air inlet damper control servo motor circuit | Refer to DTC B1442/42: Air Inlet Damper Control Servo Motor Circuit |
| evaporator temperature sensor circuit | Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| No air flow mode control | Air outlet damper control servo motor circuit | Refer to DTC B1443/43: Air Outlet Damper Control Servo Motor Circuit |
| Air conditioning amplifier | Refer to REMOVAL | |
| Engine idle up does not occur, or is continuous | Air conditioning compressor magnetic clutch circuit | Refer to Air Conditioning Compressor Magnetic Clutch Circuit |
| Compressor lock sensor circuit | Refer to DTC B1422/22: Compressor Lock Sensor Circuit | |
| Compressor solenoid circuit | Refer to DTC B1451/51: Compressor Solenoid Circuit | |
| Air conditioning control | Refer to Heater Control Panel Power Source Circuit | |
| LIN communication line | - | |
| Air conditioning amplifier | - | |
| ECM (for 2GR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM (for 1AR-FE) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| A/C indicator blinking | Compressor solenoid circuit | Refer to DTC B1451/51: Compressor Solenoid Circuit |
| Air conditioning amplifier | Refer to REMOVAL | |
| Diagnostic trouble codes are not recorded. Set mode is cleared when ignition switch turned off | Air conditioning amplifier | Refer to REMOVAL |
| Back-up power source circuit | Refer to Back-up Power Source Circuit |
AIR CONDITIONING SYSTEM (FOR REAR)
| Symptom | Suspected Area | See |
|---|---|---|
| No functions of rear Air Conditioning panel operate | LIN communication line | - |
| Rear air conditioning control | Refer to Rear Air Conditioning Control Panel Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| No functions of rear Air Conditioning system operate | A/C NO. 2 fuse | - |
| Rear air conditioning control | Refer to Rear Air Conditioning Control Panel Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Wire harness or connector | - | |
| Airflow Control: No blower control (Blower motor does not operate) | RR CLR fuse | - |
| Rear blower motor circuit | Refer to Rear Blower Motor Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Rear air conditioning control | Refer to 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 | Refer to Rear Blower Motor Circuit |
| Air conditioning amplifier | Refer to REMOVAL | |
| Rear air conditioning control | Refer to Rear Air Conditioning Control Panel Circuit | |
| Temperature Control: No cool air comes out | Refrigerant volume | Refer to ON-VEHICLE INSPECTION |
| Refrigerant pressure | Refer to ON-VEHICLE INSPECTION | |
| Air conditioning pressure sensor | Refer to DTC B1423/23: Pressure Sensor Circuit | |
| Compressor and magnetic clutch circuit | Refer to Air Conditioning Compressor Magnetic Clutch Circuit | |
| Rear air mix damper control servo motor circuit | Refer to DTC B1447/47: Rear Air Mix Damper Control Servo Motor Circuit | |
| Rear evaporator temperature sensor circuit | Refer to DTC B1417/17: Rear Evaporator Temperature Sensor Circuit | |
| Ambient temperature sensor circuit | Refer to DTC B1412/12: Ambient Temperature Sensor Circuit | |
| LIN communication line | - | |
| Rear air conditioning control | Refer to Rear Air Conditioning Control Panel Circuit | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Temperature Control: No warm air comes out | Rear air mix damper control servo motor circuit | Refer to DTC B1447/47: Rear Air Mix Damper Control Servo Motor Circuit |
| Rear air conditioning harness | - | |
| Air conditioning amplifier | Refer to REMOVAL | |
| Rear air conditioning control | Refer to Rear Air Conditioning Control Panel Circuit | |
| LIN communication line | - |