DESCRIPTION
The Automatic Temperature Control (ATC) system provides for manual or automatic control of passenger compartment air. When automatic mode is selected, system controls blower speed, temperature, and airflow.
Automatic temperature control is canceled when full heat or full cool is selected.
The system has self-diagnostic capabilities, and will store trouble codes for later retrieval. Trouble codes can be retrieved from ATC panel, or with a DRB scan tester.
Note. For basic A/C-heater system components not covered here, see A/C-HEATER SYSTEM - MANUAL article in the AIR CONDITIONING & HEAT.