Dual Electronic Automatic Temperature Control
With the use of a micro-controller, the dual automatic temperature control (DATC) module analyzes input from the following major sources:
- Temperature, function and blower selection (made by the vehicle occupants)
- In-vehicle temperature sensor
- Ambient temperature sensor
- Dual sunload sensor
- Vehicle speed
- Engine RPM
- Engine coolant temperature
- Actuator door position controls
- Driver and passenger heater core air discharge temperature sensors
- Evaporator discharge temperature
Using these inputs, the micro-controller determines the correct conditions for the following outputs:
- A/C clutch engagement
- Blower speed
- Cold air bypass door position
- Panel door position
- Defrost door position
- Floor door position
- Air inlet duct door position
- Driver coolant control valve
- Passenger driver coolant control valve
- Electric water pump (3.9L engine)
- Heater wiper rest or heated windshield
- Heated rear window rear defog
- External temperature (outside temperature display)