AIR CONDITIONING SYSTEM PROBLEM SYMPTOMS TABLE

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.



    • 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.

Air Conditioning Unit
Symptom Suspected Area Link
All functions of the air conditioning system do not operate. IG power source circuit

Click here

Back-up power source circuit

Click here

LIN communication circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Air flow control: No blower operation (blower motor does not operate.) Blower motor circuit

Click here

LIN communication circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Air flow control: No blower control (blower motor does not change speed.) Blower motor circuit

Click here

LIN communication circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Air flow control: Insufficient air flow. Blower motor circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Temperature control: Cooling effectiveness is poor. Refrigerant gas volume check using the GTS

Click here

Refrigerant volume

Click here

Refrigerant pressure

Click here

Cooler expansion valve (for LHD)

Click here

Cooler expansion valve (for RHD)

Click here

Compressor with pulley assembly (for 2AR-FE)

Click here

Magnet clutch assembly (for 2GR-FE)

Click here

Cooler Compressor assembly (for 2GR-FE)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Temperature control: No cool air comes out. Refrigerant gas volume check using the GTS

Click here

Refrigerant volume

Click here

Refrigerant pressure

Click here

Air conditioning pressure sensor circuit

Click here

Air conditioning compressor magnetic clutch circuit (for 2GR-FE)

Click here

Compressor lock sensor circuit (for 2GR-FE)

Click here

Compressor solenoid circuit

Click here

Air mix damper servo motor circuit (for driver side)

Click here

Air mix damper servo motor circuit (for front passenger side)

Click here

Evaporator temperature sensor circuit

Click here

Room temperature sensor circuit

Click here

Ambient temperature sensor circuit

Click here

LIN communication circuit

Click here

Cooler expansion valve (for LHD)

Click here

Cooler expansion valve (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD)

Click here

Air conditioning harness assembly (for LHD)

Click here

Air conditioning harness assembly (for RHD)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

ECM (for 2AR-FE)

Click here

ECM (for 2GR-FE)

Click here

Temperature control: No warm air comes out. Air mix damper servo motor circuit (for driver side)

Click here

Air mix damper servo motor circuit (for front passenger side)

Click here

Evaporator temperature sensor circuit

Click here

Room temperature sensor circuit

Click here

Ambient temperature sensor circuit

Click here

LIN communication circuit

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD)

Click here

Air conditioning harness assembly (for LHD)

Click here

Air conditioning harness assembly (for RHD)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

ECM (for 2AR-FE)

Click here

ECM (for 2GR-FE)

Click here

Temperature control: Output air is warmer or cooler than the set temperature or response is slow. Refrigerant gas volume check using the GTS

Click here

Refrigerant volume

Click here

Refrigerant pressure

Click here

Air conditioning compressor magnetic clutch circuit (for 2GR-FE)

Click here

Compressor lock sensor circuit (for 2GR-FE)

Click here

Compressor solenoid circuit

Click here

Solar sensor circuit

Click here

Room temperature sensor circuit

Click here

Ambient temperature sensor circuit

Click here

Air mix damper servo motor circuit (for driver side)

Click here

Air mix damper servo motor circuit (for front passenger side)

Click here

Air inlet damper servo motor circuit

Click here

LIN communication circuit

Click here

Radiator unit sub-assembly (for LHD)

Click here

Radiator unit sub-assembly (for RHD)

Click here

Cooler expansion valve (for LHD)

Click here

Cooler expansion valve (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD)

Click here

No. 1 blower damper servo sub-assembly (recirculation) (for LHD)

Click here

No. 1 blower damper servo sub-assembly (recirculation) (for RHD)

Click here

Air conditioning harness assembly (for LHD)

Click here

Air conditioning harness assembly (for RHD)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

ECM (for 2AR-FE)

Click here

ECM (for 2GR-FE)

Click here

Temperature control: No temperature control (only MAX COLD or MAX HOT.) Air mix damper servo motor circuit (for driver side)

Click here

Air mix damper servo motor circuit (for front Passenger side)

Click here

Room temperature sensor circuit

Click here

Ambient temperature sensor circuit

Click here

Evaporator temperature sensor circuit

Click here

Solar sensor circuit

Click here

LIN communication circuit

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) (for RHD)

Click here

Air conditioning harness assembly (for LHD)

Click here

Air conditioning harness assembly (for RHD)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

No air inlet control. Air inlet damper servo motor circuit

Click here

LIN communication circuit

Click here

Smog ventilation sensor circuit (for HC, CO) (w/ Automatic Recirculation/fresh Control Function)

Click here

Smog ventilation sensor circuit (for NOx) (w/ Automatic Recirculation/fresh Control Function)

Click here

No. 1 blower damper servo sub-assembly (recirculation) (for LHD)

Click here

No. 1 blower damper servo sub-assembly (recirculation) (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (for RHD)

Click here

Air conditioning harness assembly (for LHD)

Click here

Air conditioning harness assembly (for RHD)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Automatic recirculation/fresh control function does not operate normally. (w/ Automatic Recirculation/fresh Control Function) LIN communication circuit

Click here

Smog ventilation sensor circuit (for HC, CO)

Click here

Smog ventilation sensor circuit (for NOx)

Click here

No. 1 blower damper servo sub-assembly (recirculation) (for LHD)

Click here

No. 1 blower damper servo sub-assembly (recirculation) (for RHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (for RHD)

Click here

Air conditioning harness assembly (for LHD)

Click here

Air conditioning harness assembly (for RHD)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

No air flow mode control. Air outlet damper servo motor circuit

Click here

LIN communication circuit

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front mode) (for LHD)

Click here

No. 1 air conditioning radiator damper servo sub-assembly (front mode) (for RHD)

Click here

Air conditioning harness assembly (for LHD)

Click here

Air conditioning harness assembly (for RHD)

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

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

Click here

PTC heater circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

ECM (for 2AR-FE)

Click here

ECM (for 2GR-FE)

Click here

Diagnostic trouble codes (DTCs) are not recorded (set mode is cleared when engine switch is off.) Back-up power source circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

ECO mode switch does not operate. ECO switch circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Rear Cooling Unit
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

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

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

Click here

Rear blower motor circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

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

Click here

Rear blower motor circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Temperature control: No cool air comes out. LIN communication circuit

Click here

Rear expansion valve

Click here

Rear air mix damper servo motor circuit

Click here

Room temperature circuit (for Rear)

Click here

Rear evaporator temperature sensor circuit

Click here

No. 1 rear cooling unit damper servo motor sub-assembly

Click here

No. 2 air conditioning harness assembly

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Temperature control: No warm air comes out. LIN communication circuit

Click here

Rear air mix damper servo motor circuit

Click here

Room temperature circuit (for Rear)

Click here

No. 1 rear cooling unit damper servo motor sub-assembly

Click here

No. 2 air conditioning harness assembly

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Temperature control: Output air is warmer or cooler than the set temperature or response is slow. LIN communication circuit

Click here

Rear expansion valve

Click here

Rear air mix damper servo motor circuit

Click here

Room temperature circuit (for Rear)

Click here

No. 1 rear cooling unit damper servo motor sub-assembly

Click here

No. 2 air conditioning harness assembly

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Temperature control: No temperature control (only MAX COLD or MAX HOT.) LIN communication circuit

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

No air flow mode control. LIN communication circuit

Click here

Rear mode damper servo motor circuit

Click here

No. 2 rear cooling damper servo motor sub-assembly

Click here

No. 2 air conditioning harness assembly

Click here

Air conditioning amplifier assembly (for LHD)

Click here

Air conditioning amplifier assembly (for RHD)

Click here

Ion Generator (w/ Ion Generator)
Symptom Suspected Area Link
Front ion generator does not operate. Front ion generator circuit

Click here

Rear ion generator does not operate. Rear ion generator circuit

Click here