Heating/Defrosting - II

Heating/Defrosting
The heating and defrosting system is a blended air system and consists of a heater core, a blower motor, distribution doors and an evaporator core.

Air is directed through the heater core for heating and around for cooling, mixed and discharged through outlets in the plenum assembly to the floor, instrument panel registers or defrost nozzles as required

The heating and defrosting system:
- controls the vehicle air temperature and, during A/C operation, reduces the relative humidity of the air inside the vehicle.
- delivers heated or cooled air to maintain the vehicle interior temperature and comfort level.
- controls the A/C blower motor speed.







The blower motor draws outside air through the air inlet filter and duct during all system operations except for MAX A/C cooling (when recirculated air is used).