Symptoms

IMPORTANT: Review the system operation in order to familiarize yourself with the HVAC Automatic system functions. Refer to HVAC Blower Controls Circuit Description, the HVAC Compressor Controls Circuit Description and the HVAC Air Delivery/Temperature Control Circuit Description.

VISUAL/PHYSICAL INSPECTION
^ Inspect for aftermarket devices which could affect the operation of the HVAC System. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
^ If equipped, inspect the passenger compartment air filter for complaints of insufficient air flow.

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

SYMPTOM LIST
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Blower Delay
^ Blower Motor Inoperative at Any Speed Blower Motor Inoperative - At Any Speed
^ Blower Motor Inoperative in Auto Mode Blower Motor Inoperative - In Auto Mode
^ Blower Motor Always On Blower Motor Always On
^ Air Temperature Control Inoperative Air Temperature Control Inoperative
^ Air Temperature Control Inoperative - Passenger Air Temperature Control Inoperative - Passenger
^ Heated Air Inoperative Heated Air Inoperative
^ Defrost Air Inoperative Defrost Air Inoperative
^ IP Outlets Inoperative Instrument Panel Outlets Inoperative
^ Air Recirculation Inoperative Air Circulation Inoperative
^ Air Recirculation Always On Air Recirculation Always On
^ Cooling Insufficient, A/C System Cooling Insufficient - A/C System
^ Defrosting Insufficient Defrosting Insufficient
^ Heating Insufficient Heating Insufficient
^ Noise Diagnosis Component Tests and General Diagnostics
^ Cold Drafts on Floor Cold Drafts on Floor
^ Odor Diagnosis Component Tests and General Diagnostics