Temperature Control

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

If the heater outlet air temperature cannot be adjusted with the temperature control knob on the a/c heater control panel, the following could require service:

The a/c heater control.
A faulty blend door actuator.
The blend door.
Improper engine coolant temperature.
Obstructed cowl air intake.

Fig 1: Heating And Air Conditioning Heater Diagnosis Chart (1 Of 2)

Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: Heating And Air Conditioning Heater Diagnosis Chart (2 Of 2)

Courtesy of DAIMLERCHRYSLER CORP.