HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Manual Air Conditioning System) PROBLEM SYMPTOMS TABLE
- HINT:
- ·
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 | 
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| Air conditioning amplifier assembly |
|
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| Air flow control: No blower operation | Blower motor circuit |
|
| Air conditioning amplifier assembly |
|
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| Air flow control: No blower control | Blower motor circuit |
|
| Air conditioning amplifier assembly |
|
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| Air flow control: Insufficient air flow | Blower motor circuit |
|
| Air conditioning amplifier assembly |
|
|
| Temperature control: Cooling effectiveness is poor | Refrigerant shortage check using the GTS |
|
| Refrigerant volume | - | |
| Refrigerant pressure |
|
|
| Cooler expansion valve |
|
|
| Compressor assembly with pulley*1 |
|
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| Compressor assembly with pulley*2, 3 |
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|
| Air conditioning amplifier assembly |
|
|
| Temperature control: No cool air comes out | Refrigerant shortage check using the GTS |
|
| Refrigerant volume | - | |
| Refrigerant pressure |
|
|
| Air mix damper control cable sub-assembly |
|
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| Heater control switch circuit |
|
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| Air conditioner pressure sensor circuit |
|
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| Compressor solenoid circuit |
|
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| Evaporator temperature sensor circuit |
|
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| Ambient temperature sensor circuit |
|
|
| Cooler expansion valve |
|
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| Air conditioning amplifier assembly |
|
|
| ECM*1 |
|
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| ECM*2 |
|
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| ECM*3 |
|
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| Temperature control: No warm air comes out | Air mix damper control cable sub-assembly |
|
| Heater control switch circuit |
|
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| Ambient temperature sensor circuit |
|
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| Air conditioning amplifier assembly |
|
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| ECM*1 |
|
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| ECM*2 |
|
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| ECM*3 |
|
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| Temperature control: Output air is warmer or cooler than the set temperature or response is slow | Refrigerant shortage check using the GTS |
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| Refrigerant volume | - | |
| Refrigerant pressure |
|
|
| Air mix damper control cable sub-assembly |
|
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| Compressor solenoid circuit |
|
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| Ambient temperature sensor circuit |
|
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| Heater radiator unit sub-assembly |
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| Cooler expansion valve |
|
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| Air conditioning amplifier assembly |
|
|
| ECM*1 |
|
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| ECM*2 |
|
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| ECM*3 |
|
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| Temperature control: No temperature control (only MAX COLD or MAX HOT) | Heater control switch circuit |
|
| Air mix damper control cable sub-assembly |
|
|
| Ambient temperature sensor circuit |
|
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| Evaporator temperature sensor circuit |
|
|
| Air conditioning amplifier assembly |
|
|
| No air inlet control | No. 1 blower damper servo motor circuit |
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| Air conditioning amplifier assembly |
|
|
| No air flow mode control | No. 1 heater control sub-assembly |
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| No. 2 heater control sub-assembly |
|
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| Diagnostic Trouble Codes (DTCs) are not recorded. Set mode is cleared when the ignition switch is turned off | Air conditioning amplifier assembly |
|
*1: for 2NZ-FE
*2: for 1ZR-FE
*3: for 2ZR-FE