Initial Inspection and Diagnostic Overview

If the functional test indicates improper air delivery or a failure to shift modes, refer to the corresponding diagnostic symptom tables.
^ Heating Insufficient. Heating Insufficient
^ Heat Excessive (Heat Mode). Heat Excessive - Heater Mode
^ Heat Excessive (Vent Mode). Heat Excessive - Vent Mode
^ Air Delivery Improper. Air Delivery Improper
^ High or Low Temperature Control Effort. High or Low Temperature Control Effort
^ Noise Diagnosis - Blower Motor Noise Diagnosis - A/C System. Noise Diagnosis - Blower Motor Noise Diagnosis - A/C System
^ Odor Diagnosis. Odor Diagnosis
^ Defrosting Insufficient. Defrosting Insufficient