Astro Van AWD V6-4.3L VIN X (2003)
Air Door Actuator / Motor: Description and Operation
AIR TEMPERATURE ACTUATOR
The air temperature actuator is a 3 wire bi-directional electric motor. Ignition 3 voltage, ground and control circuits enable the actuator to operate. The
control circuit uses a 0-12 volt linear-ramped signal to command the actuator movement. The 0 and 12 volt control values represent the opposite limits
of the actuator range of motion. The values in between 0 and 12 voltscorrespond to the positions between the limits.
When the HVAC control assembly sets a commanded, or targeted, value, the control signal is set to a value between 0-12 volts. The actuator shaft
rotates until the commanded position is reached. The module will maintain the control value until a new commanded value is needed.
