Heater Control Unit Removal/Installation

Remove the audio unit. See AUDIO UNIT REMOVAL/INSPECTION .
Remove the screws. Disengage the spring clips. Detach the instrument panel finish panel.

Fig 1: Removing Instrument Panel Finish Panel
Courtesy of MAZDA MOTORS CORP.
Disconnect the cigar lighter electrical connectors.
NOTE:
- The number and location of the electrical connectors will vary dependent on vehicle equipment.
Disconnect the electrical connectors. Remove the instrument panel finish panel.

Fig 2: Disconnecting Electrical Connectors
Courtesy of MAZDA MOTORS CORP.
Remove the screws and the climate control assembly.

Fig 3: Removing Climate Control Assembly - With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Disconnect the climate control assembly.
- Disconnect the electrical connectors.
  
  Fig 4: Disconnecting Electrical Connectors
  Courtesy of MAZDA MOTORS CORP.
- Disconnect the vacuum harness connector.
  NOTE:
  - If installing a new climate control assembly, the function selector switch and the blower motor switch must be transferred from the old unit. See HEATER CONTROL SWITCH REMOVAL/INSTALLATION .
To install, reverse the removal procedure.