Operation CHARM: Car repair manuals for everyone.

HVAC Control Components

HVAC CONTROL ASSEMBLY
The HVAC control assembly receives power from the ignition 3 voltage circuit. The HVAC control assembly incorporates three potentiometers to control mode, blower motor, and air temperature settings. The HVAC control assembly does not support personalization or class 2 communications, the assembly is not programmable.

MODE ACTUATOR
The mode actuator is a 3 wire bi-directional permanent magnet electric motor. The power ground and control circuits enables the actuator to operate. The HVAC control assembly controls the actuator by a variable 12 volt DC signal.

RECIRCULATION ACTUATOR
The recirculation actuator is a 3 wire bi-directional permanent magnet electric motor. The power ground and control circuits enables the actuator to operate. The HVAC control assembly controls the actuator by a variable 12 volt DC signal.