Hvac Blend Door Actuator Reset

Blend door actuator motor calibration.

Hvac blend door actuator reset.

Turn ignition key to the on position and turn on the hvac system. 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. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. Move the key to the off position.

It can also screw up where the air blows. 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. The dealership has a handheld scan tool that connects to the climate control systems to reset the actuator limits. If the motors get out of synchronization the control head doesn t know where they are.

An actuator can go bad in of two ways. Open hood bonnet for the rhd guys and locate fuse 15 in the fuse box next to the battery. The blend and mode doors on late model chrysler vehicles are driven by dc servo motors. Scan the hvac for codes.

If there is still a problem the actuator for the temp blend door may have failed. That can result in cold air when you command heat and vice versa. Tips for replacing the automotive hvac actuators. 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.

Learn how to reset the hvac actuator with acdelco.