Note
If the battery voltage is low, the PTC heater (w/ PTC Heater), seat heater system (w/ Seat Heater System) and climate control seat system (w/ Climate Control Seat System) may not operate. When "High Power Consumption Partial Limit On AC/Heater Operation." is displayed on the multi-information display in the combination meter assembly, inspect the battery, referring to On-vehicle Inspection for the charging system.
Tech Tips
If the battery voltage is low, "Operation Limitation Control History Count (Level 1)" and "Operation Limitation Control History Count (Level 2) is counted.
for 2AR-FE: Click here
for 2GR-FE (w/ Battery Current Sensor): Click here
for 2GR-FE (w/o Battery Current Sensor): Click here
PTC heater (w/ PTC Heater)
Seat heater system (w/ Seat Heater System)
If the seat heater system does not operate normally, refer to the troubleshooting.
Climate control seat system (w/ Climate Control Seat System)
If the climate control seat system does not operate normally, refer to the troubleshooting.
If the battery voltage is low, the PTC heater may not operate. Refer to Data List for the power steering system (w/ PTC Heater).
When the battery is disconnected, or the servo motor or air conditioning amplifier assembly is replaced, be sure to perform servo motor initialization.
Tech Tips
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.
| Symptom | Suspected Area | Link |
|---|---|---|
| All functions of the air conditioning system do not operate. | IG power source circuit | |
| Back-up power source circuit | ||
| LIN communication circuit | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Air flow control: No blower operation (blower motor does not operate.) | Blower motor circuit | |
| LIN communication circuit | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Air flow control: No blower control (blower motor does not change speed.) | Blower motor circuit | |
| LIN communication circuit | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Air flow control: Insufficient air flow. | Blower motor circuit | |
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Temperature control: Cooling effectiveness is poor. | Refrigerant gas volume check using the GTS | |
| Refrigerant volume | ||
| Refrigerant pressure | ||
| Cooler expansion valve (for LHD) | ||
| Cooler expansion valve (for RHD) | ||
| Compressor with pulley assembly (for 2AR-FE) | ||
| Magnet clutch assembly (for 2GR-FE) | ||
| Cooler Compressor assembly (for 2GR-FE) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Temperature control: No cool air comes out. | Refrigerant gas volume check using the GTS | |
| Refrigerant volume | ||
| Refrigerant pressure | ||
| Air conditioning pressure sensor circuit | ||
| Air conditioning compressor magnetic clutch circuit (for 2GR-FE) | ||
| Compressor lock sensor circuit (for 2GR-FE) | ||
| Compressor solenoid circuit | ||
| Air mix damper servo motor circuit (for driver side) | ||
| Air mix damper servo motor circuit (for front passenger side) | ||
| Evaporator temperature sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| LIN communication circuit | ||
| Cooler expansion valve (for LHD) | ||
| Cooler expansion valve (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD) | ||
| Air conditioning harness assembly (for LHD) | ||
| Air conditioning harness assembly (for RHD) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FE) | ||
| Temperature control: No warm air comes out. | Air mix damper servo motor circuit (for driver side) | |
| Air mix damper servo motor circuit (for front passenger side) | ||
| Evaporator temperature sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| LIN communication circuit | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD) | ||
| Air conditioning harness assembly (for LHD) | ||
| Air conditioning harness assembly (for RHD) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FE) | ||
| Temperature control: Output air is warmer or cooler than the set temperature or response is slow. | Refrigerant gas volume check using the GTS | |
| Refrigerant volume | ||
| Refrigerant pressure | ||
| Air conditioning compressor magnetic clutch circuit (for 2GR-FE) | ||
| Compressor lock sensor circuit (for 2GR-FE) | ||
| Compressor solenoid circuit | ||
| Solar sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Air mix damper servo motor circuit (for driver side) | ||
| Air mix damper servo motor circuit (for front passenger side) | ||
| Air inlet damper servo motor circuit | ||
| LIN communication circuit | ||
| Radiator unit sub-assembly (for LHD) | ||
| Radiator unit sub-assembly (for RHD) | ||
| Cooler expansion valve (for LHD) | ||
| Cooler expansion valve (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD) | ||
| No. 1 blower damper servo sub-assembly (recirculation) (for LHD) | ||
| No. 1 blower damper servo sub-assembly (recirculation) (for RHD) | ||
| Air conditioning harness assembly (for LHD) | ||
| Air conditioning harness assembly (for RHD) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FE) | ||
| Temperature control: No temperature control (only MAX COLD or MAX HOT.) | Air mix damper servo motor circuit (for driver side) | |
| Air mix damper servo motor circuit (for front Passenger side) | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Evaporator temperature sensor circuit | ||
| Solar sensor circuit | ||
| LIN communication circuit | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD) | ||
| Air conditioning harness assembly (for LHD) | ||
| Air conditioning harness assembly (for RHD) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| No air inlet control. | Air inlet damper servo motor circuit | |
| LIN communication circuit | ||
| Smog ventilation sensor circuit (for HC, CO) (w/ Automatic Recirculation/fresh Control Function) | ||
| Smog ventilation sensor circuit (for NOx) (w/ Automatic Recirculation/fresh Control Function) | ||
| No. 1 blower damper servo sub-assembly (recirculation) (for LHD) | ||
| No. 1 blower damper servo sub-assembly (recirculation) (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (for RHD) | ||
| Air conditioning harness assembly (for LHD) | ||
| Air conditioning harness assembly (for RHD) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Automatic recirculation/fresh control function does not operate normally. (w/ Automatic Recirculation/fresh Control Function) | LIN communication circuit | |
| Smog ventilation sensor circuit (for HC, CO) | ||
| Smog ventilation sensor circuit (for NOx) | ||
| No. 1 blower damper servo sub-assembly (recirculation) (for LHD) | ||
| No. 1 blower damper servo sub-assembly (recirculation) (for RHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (for RHD) | ||
| Air conditioning harness assembly (for LHD) | ||
| Air conditioning harness assembly (for RHD) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| No air flow mode control. | Air outlet damper servo motor circuit | |
| LIN communication circuit | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front mode) (for LHD) | ||
| No. 1 air conditioning radiator damper servo sub-assembly (front mode) (for RHD) | ||
| Air conditioning harness assembly (for LHD) | ||
| Air conditioning harness assembly (for RHD) | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Quick heater assembly does not operate. (w/ PTC Heater) | "High Power Consumption Partial Limit On AC/Heater Operation" message does not display on the multi-information display in the combination meter assembly. | - |
| LIN communication circuit | ||
| PTC heater circuit | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| ECM (for 2AR-FE) | ||
| ECM (for 2GR-FE) | ||
| Diagnostic trouble codes (DTCs) are not recorded (set mode is cleared when engine switch is off.) | Back-up power source circuit | |
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| ECO mode switch does not operate. | ECO switch circuit | |
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) |
| Symptom | Suspected Area | Link |
|---|---|---|
| No functions of cooler control switch assembly operate. | "High Power Consumption Partial Limit On AC/Heater Operation" message does not display on the multi-information display in the combination meter assembly. | - |
| LIN communication circuit | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Airflow control: No blower control (blower motor does not operate.) | "High Power Consumption Partial Limit On AC/Heater Operation" message does not display on the multi-information display in the combination meter assembly. | - |
| LIN communication circuit | ||
| Rear blower motor circuit | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Airflow control: No blower control (blower motor does not change speed.) | "High Power Consumption Partial Limit On AC/Heater Operation" message does not display on the multi-information display in the combination meter assembly. | - |
| LIN communication circuit | ||
| Rear blower motor circuit | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Temperature control: No cool air comes out. | LIN communication circuit | |
| Rear expansion valve | ||
| Rear air mix damper servo motor circuit | ||
| Room temperature circuit (for Rear) | ||
| Rear evaporator temperature sensor circuit | ||
| No. 1 rear cooling unit damper servo motor sub-assembly | ||
| No. 2 air conditioning harness assembly | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Temperature control: No warm air comes out. | LIN communication circuit | |
| Rear air mix damper servo motor circuit | ||
| Room temperature circuit (for Rear) | ||
| No. 1 rear cooling unit damper servo motor sub-assembly | ||
| No. 2 air conditioning harness assembly | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Temperature control: Output air is warmer or cooler than the set temperature or response is slow. | LIN communication circuit | |
| Rear expansion valve | ||
| Rear air mix damper servo motor circuit | ||
| Room temperature circuit (for Rear) | ||
| No. 1 rear cooling unit damper servo motor sub-assembly | ||
| No. 2 air conditioning harness assembly | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| Temperature control: No temperature control (only MAX COLD or MAX HOT.) | LIN communication circuit | |
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) | ||
| No air flow mode control. | LIN communication circuit | |
| Rear mode damper servo motor circuit | ||
| No. 2 rear cooling damper servo motor sub-assembly | ||
| No. 2 air conditioning harness assembly | ||
| Air conditioning amplifier assembly (for LHD) | ||
| Air conditioning amplifier assembly (for RHD) |
| Symptom | Suspected Area | Link |
|---|---|---|
| Front ion generator does not operate. | Front ion generator circuit | |
| Rear ion generator does not operate. | Rear ion generator circuit |