Diagnostic Starting Point - Heating, Ventilation and Air Conditioning

Diagnostic Starting Point - Heating, Ventilation and Air Conditioning

Begin the system diagnosis with Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) . The Diagnostic System Check - Vehicle will provide the following information:

* The identification of the control modules which are not communicating.
* The identification of any stored diagnostic trouble codes (DTCs) and their status.


The use of the Diagnostic System Check - Vehicle will identify the correct procedures to begin vehicle diagnosis. These must be performed before system DTC or symptom diagnosis.