Hvac Blend Door Actuator Recalibration

Blend door actuator motor calibration.

Hvac blend door actuator recalibration.

Although the internal components remain exactly the same the case that holds them and the mounting holes differ between year make. On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989. Open hood bonnet for the rhd guys and locate fuse 15 in the fuse box next to the battery. Okay the only recalibration procedure is for a system that has auto controls.

This actuator assembly might fit a few other models but double check the part numbers for your car. Turn ignition key to the on position and turn on the hvac system. The blend and mode doors on late model chrysler vehicles are driven by dc servo motors. If the motors get out of synchronization the control head doesn t know where they are.

On 2001 2002 models a scan tool cannot be installed during the. Failure to allow sufficient time to calibrate can lead to the system being stuck in one position such as defrost mode. The hvac control head expects to see the actuator move to a certain position with the given signal provided. It only applies to the temperature door actuator.

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. Recalibrate chrysler ac control head how recalibrate a chrysler heater control. Move the key to the off position. That can result in cold air when you command heat and vice versa.

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.