For 1990-2009 cars only
Important: Review the system operation in order to familiarize yourself with the system functions. Refer to:
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation of the HVAC System. Refer to Checking Aftermarket Accessories in Wiring Systems. |
| • | 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 in Wiring Systems.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
| • | Leak Testing in Heating, Ventilation and Air Conditioning |
| • | Cooling Insufficient - Air Conditioning (A/C) System in Heating, Ventilation and Air Conditioning |
| • | Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone A in Heating, Ventilation and Air Conditioning |
| • | Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone B in Heating, Ventilation and Air Conditioning |
| • | Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone C in Heating, Ventilation and Air Conditioning |
| • | Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone D in Heating, Ventilation and Air Conditioning |
| • | Defrosting Insufficient in Heating, Ventilation and Air Conditioning |
| • | Heating Insufficient in Heating, Ventilation and Air Conditioning |
| • | Noise Diagnosis - Blower Motor in Heating, Ventilation and Air Conditioning |
| • | Noise Diagnosis - Air Conditioning (A/C) System in Heating, Ventilation and Air Conditioning |
| • | Cold Drafts on Floor in Heating, Ventilation and Air Conditioning |
| • | Odor Diagnosis in Heating, Ventilation and Air Conditioning |
