Hvac Blend Door Actuator Reset

For manual systems it does not matter where the a c controls are set but if you feel the need to do something turn the blower switch on i prefer speed 3 and set the temperature.

Hvac blend door actuator reset.

The blend and mode doors on late model chrysler vehicles are driven by dc servo motors. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. Turn ignition key to the on position and turn on the hvac system. The dealership has a handheld scan tool that connects to the climate control systems to reset the actuator limits.

Ignition off pull the hvac ecas fuse for 10 seconds reinstall and start vehicle without touching any controls wait 40 seconds for the control module to self calibrate. A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit. On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989. If the motors get out of synchronization the control head doesn t know where they are.

If you would like to leave a donation here is a link. It can also screw up where the air blows. Tips for replacing the automotive hvac actuators. The topic of how to perform the actuator recalibration procedure on chevrolet gmc and cadillac trucks and suvs has become an ever increasing topic of discussion.

That can result in cold air when you command heat and vice versa. Blend door actuator motor calibration. If there is still a problem the actuator for the temp blend door may have failed. Move the key to the off position.

An actuator can go bad in of two ways.