Important: Review the system operation in order to learn the system functions. Refer to the following procedures:
Visual/Physical Inspection
• | Inspect the system components which are easily accessible or visible for obvious damage or for conditions which could cause the symptom. |
• | Verify the A/C compressor clutch turns freely and is not seized. |
• | The following conditions may cause window fogging: |
- | A blocked drain tube to the A/C evaporator |
- | Maximum passenger capacity |
- | Blocked body pressure relief valves |
• | Inspect the air distribution system for causes of reduced airflow: |
- | An obstructed or dirty passenger compartment air filter |
- | Blocked or damaged air vents |
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to
Testing for Intermittent Conditions and Poor Connections
.
Symptom List
Refer to one of the following symptom diagnostic procedures: