PROBLEM SYMPTOMS TABLE
Troubleshooting
| Symptom |
Suspected area |
See page |
| All functions of the A/C system do not operate |
1. IG power source circuit |
Click here
|
| 2. Back-up power source circuit |
Click here
|
|
| 3. A/C amplifier |
- |
|
| Air Flow Control: No blower operation |
1. Blower motor circuit |
Click here
|
| 2. A/C amplifier |
- |
|
| Air Flow Control: No blower control |
1. Blower motor circuit |
Click here
|
| 2. A/C amplifier |
- |
|
| Air Flow Control: Insufficient air flow |
1. Blower motor circuit |
Click here
|
| 2. A/C amplifier |
- |
|
| Temperature Control: No cool air comes out |
1. Refrigerant volume |
Click here
|
| 2. Refrigerant pressure |
Click here
|
|
| 3. Pressure switch circuit |
Click here
|
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| 4. Low pressure sensor circuit |
Click here
|
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| 5. Compressor circuit |
Click here
|
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| 6. Compressor lock sensor circuit |
Click here
|
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| 7. Compressor solenoid circuit |
Click here
|
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| 8. Air mix control servo motor circuit (Driver side) |
Click here
|
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| 9. Air mix control servo motor circuit (Passenger side) |
Click here
|
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| 10. Evaporator temperature sensor circuit |
Click here
|
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| 11. Room temperature sensor circuit |
Click here
|
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| 12. Ambient temperature sensor circuit |
Click here
|
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| 13. Expansion valve |
Click here
|
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| 14. A/C amplifier |
- |
|
| 15. ECM |
- |
|
| Temperature Control: No warm air comes out |
1. Air mix control servo motor circuit (Driver side) |
Click here
|
| 2. Air mix control servo motor circuit (Passenger side) |
Click here
|
|
| 3. Evaporator temperature sensor circuit |
Click here
|
|
| 4. Room temperature sensor circuit |
Click here
|
|
| 5. Ambient temperature sensor circuit |
Click here
|
|
| 6. A/C amplifier |
- |
|
| 7. ECM |
- |
|
| Temperature Control: Output air is warmer or cooler |
1. Refrigerant volume |
Click here
|
| 2. Refrigerant pressure |
Click here
|
|
| 3. Solar sensor circuit (Driver side) |
Click here
|
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| 4. Solar sensor circuit (Passenger side) |
Click here
|
|
| 5. Room temperature sensor circuit |
Click here
|
|
| 6. Ambient temperature sensor circuit |
Click here
|
|
| 7. Air mix control servo motor circuit (Driver side) |
Click here
|
|
| 8. Air mix control servo motor circuit (Passenger side) |
Click here
|
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| 9. Cool air by-pass damper control servo motor circuit |
Click here
|
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| 10. Air inlet control servo motor circuit |
Click here
|
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| 11. Radiator unit sub-assembly |
Click here
|
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| 12. Expansion valve |
Click here
|
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| 13. A/C amplifier |
- |
|
| 14. ECM |
- |
|
| Temperature control: No temperature control (only |
1. Air mix control servo motor circuit (Driver side) |
Click here
|
| 2. Air mix control servo motor circuit (Passenger side) |
Click here
|
|
| 3. Cool air by-pass damper servomotor circuit |
Click here
|
|
| 4. Room temperature sensor circuit |
Click here
|
|
| 5. Ambient temperature sensor circuit |
Click here
|
|
| 6. Evaporator temperature sensor circuit |
Click here
|
|
| 7. Solar sensor circuit (Driver side) |
Click here
|
|
| 8. Solar sensor circuit (Passenger side) |
Click here
|
|
| 9. A/C amplifier |
- |
|
| Engine coolant does not warm up quickly when the |
1. PTC heater circuit |
Click here
|
| 2. A/C amplifier |
- |
|
| No air inlet control |
1. Air inlet control servo motor circuit |
Click here
|
| 2. A/C amplifier |
- |
|
| No air flow mode control |
1. Air outlet control servo motor circuit |
Click here
|
| 2. A/C amplifier |
- |
|
| Engine idle up does not occur, or is continuous |
1. Compressor circuit |
Click here
|
| 2. Compressor lock sensor circuit |
Click here
|
|
| 3. Compressor solenoid circuit |
Click here
|
|
| 4. A/C amplifier |
- |
|
| Blinking of A/C indicator |
1. Compressor solenoid circuit |
Click here
|
| 2. A/C amplifier |
- |
|
| Diagnostic trouble codes are not recorded. Set mode |
1. Back-up power source circuit |
Click here
|
| 2. A/C amplifier |
- |