Symptom: a Passat B51.8T sedan, air conditioning work more than 20 minutes to automatically stop, and so put out the fire for some time the air conditioning will work so repeat.
     Troubleshooting: Check the air conditioning line normal, air conditioning pressure is no problem, with a decoder without decoding it, observe his data flow found his water temperature has been more than one hundred degrees, but the instrument shows within 90 degrees, demolition Under his thermostat and a new piece on the water found in his open late, replace the new in the use of a decoder to view the temperature is normal, air conditioning work is also normal.
     Failure analysis: the original is because the thermostat damage is not too serious, can not see the high temperature on the instrument but the computer out of the signal is high temperature, so it is to protect the engine off the air conditioning.