AIR CONDITIONING SYSTEM PROBLEM SYMPTOMS TABLE
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.
| Symptom | Suspected Area | See page |
|---|---|---|
| All functions of the A/C system do not operate | IG power source circuit | |
| Back-up power source circuit | ||
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| Air Flow Control: No blower operation | Blower motor circuit | |
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| Air Flow Control: No blower control | Blower motor circuit | |
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| Air Flow Control: Insufficient air flow | Blower motor circuit | |
| A/C amplifier | ||
| Temperature Control: No cool air comes out | Refrigerant volume | |
| Refrigerant pressure | ||
| Pressure sensor circuit | ||
| Compressor solenoid circuit | ||
| Air mix control servo motor circuit (Driver side) | ||
| Air mix control servo motor circuit (Passenger side) | ||
| Evaporator temperature sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Expansion valve | ||
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| ECM | ||
| Temperature Control: No warm air comes out | Air mix control servo motor circuit (Driver side) | |
| Air mix control servo motor circuit (Passenger side) | ||
| Evaporator temperature sensor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| ECM | ||
| Temperature Control: Output air is warmer or cooler than the set temperature or response is slow. | Refrigerant volume | |
| Refrigerant pressure | ||
| Solar sensor circuit (Driver side) | ||
| Solar sensor circuit (Passenger side) | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Air mix control servo motor circuit (Driver side) | ||
| Air mix control servo motor circuit (Passenger side) | ||
| Cool air bypass damper control servo motor circuit | ||
| Air inlet control servo motor circuit | ||
| Radiator unit sub-assembly | ||
| Expansion valve | ||
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| ECM | ||
| Temperature control: No temperature control (only Max. cool or Max. warm) | Air mix control servo motor circuit (Driver side) | |
| Air mix control servo motor circuit (Passenger side) | ||
| Cool air bypass damper servo motor circuit | ||
| Room temperature sensor circuit | ||
| Ambient temperature sensor circuit | ||
| Evaporator temperature sensor circuit | ||
| Solar sensor circuit (Driver side) | ||
| Solar sensor circuit (Passenger side) | ||
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| No air inlet control | Air inlet control servo motor circuit | |
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| No air flow mode control | Air outlet control servo motor circuit | |
| Integration control and panel assembly*1 | ||
| Multi-display*2 | ||
| A/C amplifier | ||
| Engine idle up does not occur, or is continuous | Compressor solenoid circuit | |
| A/C amplifier | ||
| Blinking of A/C indicator | Compressor solenoid circuit | |
| A/C amplifier | ||
| Diagnostic trouble codes are not recorded. Set mode is cleared when engine switch is off. | Back-up power source circuit | |
| A/C amplifier |
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*1: w/o Navigation System
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*2: w/ Navigation System