Possible Causes
CHECK FOR HVAC RELATED DTCS IN THE POWERTRAIN CONTROL MODULE (PCM)
CHECK FOR ACTIVE ATC DTCS AND COOLDOWN TEST FAULT MESSAGES
CHECK FOR HVAC RELATED DTCS IN THE POWERTRAIN CONTROL MODULE (PCM)
Perform MANUAL A/C SYSTEM TEST
CHECK FOR HVAC RELATED DTCS IN THE POWERTRAIN CONTROL MODULE (PCM)
CHECK FOR ACTIVE ATC DTCS AND COOLDOWN TEST FAULT MESSAGES
CHECK FOR HVAC RELATED DTCS IN THE POWERTRAIN CONTROL MODULE (PCM)
Perform MANUAL A/C SYSTEM TEST