AIR CONDITIONING SYSTEM > PROBLEM SYMPTOMS TABLE

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HINT:
  1. 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.
  2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.


Air Conditioning System 
Symptom
Suspected Area
See page
All functions of the A/C system do not operate
IG power source circuit
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Back-up power source circuit
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Air conditioning control panel circuit
 Click here
Air conditioning amplifier assembly
 Click here
Air flow control: No blower operation
Blower motor circuit
 Click here
Air conditioning control panel circuit
 Click here
Air conditioning amplifier assembly
 Click here
Air flow control: No blower control
Blower motor circuit
 Click here
Air conditioning control panel circuit
 Click here
Air conditioning amplifier assembly
 Click here
Air flow control: Insufficient air flow
Blower motor circuit
 Click here
Air conditioning amplifier assembly
 Click here
Temperature control: No cool air comes out
Refrigerant volume
 Click here
Refrigerant pressure
 Click here
Air conditioning pressure sensor circuit
 Click here
Air mix damper control servo motor circuit (for driver side)
 Click here
Air mix damper control 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
Air conditioning control panel circuit
 Click here
Expansion valve
 Click here
CAN communication system
 Click here
Air conditioning amplifier assembly
 Click here
No. 2 engine wire
 Click here
Compressor with motor assembly
 Click here
Power management control ECU
 Click here
Temperature control: No warm air comes out
Air mix damper control servo motor circuit (for driver side)
 Click here
Air mix damper control 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
Air conditioning control panel circuit
 Click here
PTC heater circuit*2
 Click here
Exhaust heat recirculation system*3
 Click here
CAN communication system
 Click here
Air conditioning amplifier assembly
 Click here
Power management control ECU
 Click here
Temperature control: Output air is warmer or cooler than the set temperature or response is slow
Refrigerant volume
 Click here
Refrigerant pressure
 Click here
Solar sensor circuit (for driver side)
 Click here
Solar sensor circuit (for front passenger side)
 Click here
Room temperature sensor circuit
 Click here
Ambient temperature sensor circuit
 Click here
Air mix damper control servo motor circuit (for driver side)
 Click here
Air mix damper control servo motor circuit (for front passenger side)
 Click here
Air inlet damper control servo motor circuit
 Click here
Air conditioning control panel circuit
 Click here
Radiator unit sub-assembly
 Click here
Expansion valve
 Click here
Exhaust heat recirculation system*3
 Click here
CAN communication system
 Click here
Air conditioning amplifier assembly
 Click here
No. 2 engine wire
 Click here
Compressor with motor assembly
 Click here
Power management control ECU
 Click here
Temperature control: No temperature control (only Max. cool or Max. warm)
Air mix damper control servo motor circuit (for driver side)
 Click here
Air mix damper control 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 (for driver side)
 Click here
Solar sensor circuit (for front passenger side)
 Click here
Air conditioning control panel circuit
 Click here
Air conditioning amplifier assembly
 Click here
Heater performance is low (engine is stopped)*2
PTC heater circuit
 Click here
Air conditioning amplifier assembly
 Click here
No air inlet control
Air inlet damper control servo motor circuit
 Click here
Air conditioning control panel circuit
 Click here
Air conditioning amplifier assembly
 Click here
No air flow mode control
Air outlet damper control servo motor circuit
 Click here
Air conditioning control panel circuit
 Click here
Air conditioning amplifier assembly
 Click here
Windshield fogs up*1
Glass temperature sensor circuit
 Click here
Glass surroundings temperature sensor circuit
 Click here
Glass humidity sensor circuit
 Click here
Air conditioning thermistor assembly
 Click here
Air conditioning amplifier assembly
 Click here
ECO switch does not operate normally
ECO switch circuit
 Click here
Air conditioning amplifier assembly
 Click here
Pollen removal mode does not operate (A/C system is operating normally)
Air inlet damper control servo motor circuit
 Click here
Air outlet damper control servo motor circuit
 Click here
Blower motor circuit
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Air conditioning control panel circuit
 Click here
Air conditioning amplifier assembly
 Click here
Diagnostic trouble codes (DTCs) are not stored. Set mode is cleared when power switch is off.
Back-up power source circuit
 Click here
Air conditioning amplifier assembly
 Click here
  1. *1: w/ Air Conditioning Thermistor Assembly
  2. *2: w/ PTC Heater Assembly
  3. *3: w/ Exhaust Heat Recirculation System