Climate Control Assembly

The climate control assembly has three system controls:

• The A/C heater function selector switch combines a vacuum selector valve with two electrical switches to supply battery positive voltage (B+) to the A/C clutch circuit and the blower motor control circuit.
• The temperature selection is accomplished through cable-controlled positioning of the temperature blend door located in the heater core housing.
• The blower motor switch controls the blower motor speed by adding or bypassing resistors in the heater blower motor switch resistor.
Fig 1: Identifying Climate Control Assembly System Controls
Courtesy of MAZDA MOTORS CORP.