Hvac Blend Door Actuator Recalibration

This actuator assembly might fit a few other models but double check the part numbers for your car.

Hvac blend door actuator recalibration.

Open hood bonnet for the rhd guys and locate fuse 15 in the fuse box next to the battery. On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989. Blend door actuator motor calibration. Although the internal components remain exactly the same the case that holds them and the mounting holes differ between year make.

The blend and mode doors on late model chrysler vehicles are driven by dc servo motors. Okay the only recalibration procedure is for a system that has auto controls. Move the key to the off position. Recalibrate chrysler ac control head how recalibrate a chrysler heater control.

The hvac control head expects to see the actuator move to a certain position with the given signal provided if the door gets outside of that preprogrammed position the controller becomes confused and attempts to try and find the correct position by continually searching for it or will stop once it reaches its default position. If the motors get out of synchronization the control head doesn t know where they are. That can result in cold air when you command heat and vice versa. The hvac control head expects to see the actuator move to a certain position with the given signal provided.

If the door gets outside of that preprogrammed position the controller becomes confused and attempts to try to find the correct position by continually searching for it or it will stop once it reaches its default position. When replacing any of the hvac actuator motors mode door or temperature blend the hvac system will have to go through a relearn or calibration process. If your vehicle has manual controls a recalibration is not possible or needed. Turn ignition key to the on position and turn on the hvac system.

It only applies to the temperature door actuator.