Symptoms - HVAC Systems - Automatic

Symptoms - HVAC Systems - Automatic

Important: Review the system operation in order to familiarize yourself with the system functions.


Refer to Air Temperature Description and Operation HVAC - Automatic.

Visual/Physical Inspection

* Inspect for aftermarket devices which could affect the operation of the system. Refer to Checking Aftermarket Accessories Checking Aftermarket Accessories.
* Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

* HVAC Compressor Clutch Does Not Engage HVAC Compressor Clutch Does Not Engage
* Blower Motor Inoperative Blower Motor Inoperative
* Too Hot in Vehicle Too Hot in Vehicle
* Too Cold in Vehicle Too Cold in Vehicle
* Air Delivery Improper Air Delivery Improper
* Air Recirculation Malfunction Air Recirculation Malfunction
* Control Head Inoperative Control Head Inoperative
* Control Head Illumination/Display Does Not Operate Properly Control Head Illumination/Display Does Not Operate Properly