AIR CONDITIONING SYSTEM PROBLEM SYMPTOMS TABLE
Note
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If the battery voltage is low, the following functions may not operate. When "Operation of Electrical items Restricted" is displayed on the multi-information display in the combination meter assembly, perform troubleshooting according to the How to Proceed with Troubleshooting procedures for the charging system Click here.
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If the battery voltage is low, "Operation Limitation Control History Count (Level 1)" and "Operation Limitation History Count (Level 2)" are both incremented Click here.
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PTC Heater (w/ PTC Heater)
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Climate Control Seat System (w/ Climate Control Seat System)
Refer to the climate control seat system when the system does not operate Click here.
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Seat Heater System (w/ Seat Heater)
Refer to the seat heater system when the system does not operate Click here.
Tech Tips
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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.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
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*1: If an attempt is made to operate the PTC heater when the voltage of the vehicle battery has decreased, the PTC heater will not operate as the power steering system is given priority.
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*2: Even when all the inspected areas are normal, the system may not change to the driver seat control mode due to the ambient temperature, etc. Also, even if the front passenger seat is unoccupied, the system may not change to the driver seat control mode due to control conditions.
| Symptom | Suspected Area | See page |
|---|---|---|
| All functions of the A/C system do not operate | IG power source circuit | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Multi-media module receiver assembly | ||
| Air conditioning amplifier assembly | ||
| Harness or connector | - | |
| Switch operation of multi-display (for 8 Inch) or accessory meter assembly (for 12.3 Inch) is not accepted. | Navigation system (w/ Navigation System) | |
| Audio and visual system (w/o Navigation System) | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Multi-media module receiver assembly | ||
| Air conditioning amplifier assembly | ||
| Harness or connector | - | |
| Switch operation of multi-media module receiver assembly is not accepted. | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Multi-media module receiver assembly | ||
| Air conditioning amplifier assembly | ||
| Harness or connector | - | |
| Switch operation of rear control switch is not accepted. (w/ Rear Control Switch) | Check rear air conditioning operation canceled from multi-display (for 8 Inch) or accessory meter assembly (for 12.3 Inch) | - |
| LIN communication circuit | ||
| Rear control switch | ||
| Air conditioning amplifier assembly | ||
| Air flow control: No blower operation | Blower motor circuit | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Multi-media module receiver assembly | ||
| Air conditioning amplifier assembly | ||
| Harness or connector | - | |
| Air flow control: No blower control | Blower motor circuit | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Multi-media module receiver assembly | ||
| Air conditioning amplifier assembly | ||
| Harness or connector | - | |
| Temperature control: Cooling effectiveness is poor | ECO drive mode cancel | - |
| Refrigerant volume | ||
| Refrigerant pressure | ||
| Cooler expansion valve | ||
| Flow sensor circuit | ||
| Air mix damper control servo motor circuit (for driver side upper layer side) | ||
| Air mix damper control servo motor circuit (for front passenger upper layer side) | ||
| Air mix damper control servo motor circuit (for driver side lower layer side) | ||
| Air mix damper control servo motor circuit (for front passenger lower layer side) | ||
| Air mix damper control servo motor circuit (for rear side) (w/ Rear Control Switch) | ||
| Evaporator temperature sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Glass temperature sensor circuit | ||
| Glass surroundings temperature sensor circuit | ||
| Glass humidity sensor circuit | ||
| Cooler compressor assembly (for 2WD) | ||
| Cooler compressor assembly (for AWD) | ||
| No. 2 air conditioning radiator damper servo sub-assembly (driver side upper air mix) | ||
| No. 2 air conditioning radiator damper servo sub-assembly (front passenger side upper air mix) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for LHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (drive side lower) (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (front passenger side lower) (for LHD) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (rear side air mix) | ||
| Air conditioning harness assembly | - | |
| Air conditioning amplifier assembly | ||
| Temperature control: No cool air comes out | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Refrigerant volume | ||
| Refrigerant pressure | ||
| Cooler expansion valve | ||
| Air conditioning pressure sensor circuit | ||
| Air conditioning compressor magnetic clutch circuit | ||
| Compressor lock sensor circuit | ||
| Flow sensor circuit | ||
| Compressor solenoid circuit | ||
| Air conditioning harness communication circuit | ||
| Air mix damper control servo motor circuit (for driver side upper layer side) | ||
| Air mix damper control servo motor circuit (for front passenger upper layer side) | ||
| Air mix damper control servo motor circuit (for driver side lower layer side) | ||
| Air mix damper control servo motor circuit (for front passenger lower layer side) | ||
| Air mix damper control servo motor circuit (for rear side) (w/ Rear Control Switch) | ||
| Evaporator temperature sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Glass temperature sensor circuit | ||
| Glass surroundings temperature sensor circuit | ||
| Glass humidity sensor circuit | ||
| Multi-media module receiver assembly | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Harness or connector | - | |
| No. 2 air conditioning radiator damper servo sub-assembly (driver side upper air mix) | ||
| No. 2 air conditioning radiator damper servo sub-assembly (front passenger side upper air mix) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for LHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (drive side lower) (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (front passenger side lower) (for LHD) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (rear side air mix) | ||
| Air conditioning harness assembly | - | |
| Air conditioning amplifier assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Temperature control: No warm air comes out | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Air conditioning harness communication circuit | ||
| Air mix damper control servo motor circuit (for driver side upper layer side) | ||
| Air mix damper control servo motor circuit (for front passenger upper layer side) | ||
| Air mix damper control servo motor circuit (for driver side lower layer side) | ||
| Air mix damper control servo motor circuit (for front passenger lower layer side) | ||
| Air mix damper control servo motor circuit (for rear side) (w/ Rear Control Switch) | ||
| Evaporator temperature sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Glass temperature sensor circuit | ||
| Glass surroundings temperature sensor circuit | ||
| Glass humidity sensor circuit | ||
| PTC heater circuit (w/ PTC Heater) | ||
| Multi-media module receiver assembly | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Harness or connector | - | |
| No. 2 air conditioning radiator damper servo sub-assembly (driver side upper air mix) | ||
| No. 2 air conditioning radiator damper servo sub-assembly (front passenger side upper air mix) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for LHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (drive side lower) (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (front passenger side lower) (for LHD) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (rear side air mix) | ||
| Air conditioning harness assembly | - | |
| Air conditioning amplifier assembly | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| PTC heater does not operate*1 (w/ PTC Heater) | There is no "Operation of Electrical items Restricted" displayed on the multi-information display in the combination meter assembly | - |
| ECO drive mode cancel | - | |
| Power steering system ("Battery Control Count [Body ECU]") | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| PTC heater circuit | ||
| Air conditioning amplifier assembly | ||
| Power steering control ECU | ||
| ECM (for 2GR-FSE) | ||
| ECM (for 4GR-FSE) | ||
| Temperature control: Output air is warmer or cooler than the set temperature or response is slow | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Refrigerant volume | ||
| Refrigerant pressure | ||
| Solar sensor circuit (for driver side) | ||
| Solar sensor circuit (for front passenger side) | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Glass temperature sensor circuit | ||
| Glass surroundings temperature sensor circuit | ||
| Glass humidity sensor circuit | ||
| Air mix damper control servo motor circuit (for driver side upper layer side) | ||
| Air mix damper control servo motor circuit (for front passenger upper layer side) | ||
| Air mix damper control servo motor circuit (for driver side lower layer side) | ||
| Air mix damper control servo motor circuit (for front passenger lower layer side) | ||
| Air mix damper control servo motor circuit (for rear side) (w/ Rear Control Switch) | ||
| Multi-media module receiver assembly | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Harness or connector | - | |
| No. 2 air conditioning radiator damper servo sub-assembly (driver side upper air mix) | ||
| No. 2 air conditioning radiator damper servo sub-assembly (front passenger side upper air mix) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for LHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (drive side lower) (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (front passenger side lower) (for LHD) | ||
| No. 4 air conditioning radiator damper servo sub-assembly (for RHD) | ||
| No. 3 air conditioning radiator damper servo sub-assembly (rear side air mix) | ||
| Air conditioning harness assembly | - | |
| Air conditioning amplifier assembly | ||
| Temperature control: No temperature control (only LO or HI) | Room temperature sensor circuit | |
| Ambient temperature sensor circuit | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Multi-media module receiver assembly | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Harness or connector | - | |
| Air conditioning amplifier assembly | ||
| No air inlet control | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Air conditioning harness communication circuit | ||
| Air inlet damper control servo motor circuit | ||
| Exhaust gas sensor circuit (w/ Smog Ventilation Sensor) | ||
| Emission gas NOx sensor circuit (w/ Smog Ventilation Sensor) | ||
| Multi-media module receiver assembly | ||
| No. 1 blower damper servo sub-assembly | ||
| Air conditioning harness assembly | - | |
| Air conditioning amplifier assembly | ||
| Blower vent temperature is different on the right and left sides even though the set temperature is the same for both sides | Air mix damper control servo motor circuit (for driver side upper layer side) | |
| Air mix damper control servo motor circuit (for front passenger upper layer side) | ||
| Solar sensor circuit (for driver side) | ||
| Solar sensor circuit (for front passenger side) | ||
| No. 2 air conditioning radiator damper servo sub-assembly (driver side upper air mix) | ||
| No. 2 air conditioning radiator damper servo sub-assembly (front passenger side upper air mix) | ||
| Air conditioning harness assembly | - | |
| Air conditioning amplifier assembly | ||
| No air flow mode control | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Air conditioning harness communication circuit | ||
| Air outlet damper control servo motor circuit (for defroster side) | ||
| Air outlet damper control servo motor circuit (for front side [w/o Rear Control Switch] or front LH side [w/ Rear Control Switch]) | ||
| Air outlet damper control servo motor circuit (for front RH side) (w/ Rear Control Switch) | ||
| Air outlet damper control servo motor circuit (for foot side [w/o Rear Control Switch] or rear side [w/ Rear Control Switch]) | ||
| Multi-media module receiver assembly | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| Harness or connector | - | |
| No. 1 air conditioning radiator damper servo sub-assembly | ||
| No. 6 air conditioning radiator damper servo sub-assembly (for LHD or RHD without Rear Control Switch) | ||
| No. 5 air conditioning radiator damper servo sub-assembly (for RHD with Rear Control Switch) | ||
| No. 5 air conditioning radiator damper servo sub-assembly (for LHD) | ||
| No. 6 air conditioning radiator damper servo sub-assembly (for RHD) | ||
| No. 7 air conditioning radiator damper servo sub-assembly | ||
| Air conditioning harness assembly | - | |
| Air conditioning amplifier assembly | ||
| Ion generator does not operate (w/ Ion Generator) | Ion generator circuit | |
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Multi-media module receiver assembly | ||
| Multi-display (for 8 Inch) | ||
| Accessory meter assembly (for 12.3 Inch) | ||
| No. 1 ion generator sub-assembly | ||
| Harness or connector | - | |
| Air conditioning amplifier assembly | ||
| ECO drive mode switch (combination switch assembly) does not operate normally | ECO drive mode switch circuit | |
| Diagnostic trouble codes are not recorded. Set mode is cleared when engine switch is off | Back-up power source circuit | |
| Air conditioning amplifier assembly | ||
| Save energy and air flow mode does not operate normally*2 | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Multi-media module receiver assembly | ||
| Air conditioning amplifier assembly | ||
| Seat belt warning system |