Blend Door Calibration Procedure

4 calibration should take about about 2 minutes to complete if you have heater control and about 20 seconds if you have automatic temp control system.

Blend door calibration procedure.

Okay the only recalibration procedure is for a system that has auto controls. It only applies to the temperature door actuator. The hvac control head uses its pre programmed logic and actuator endpoints to position the door correctly. The blend door diverts the airflow to the defroster vents in the upper dashboard the floor discharge for heat or the center vents for air conditioning.

A re calibration may fix you up. Access our free reset procedure repair guide for grand caravan 2008 through autozone rewards. Don t touch the hvac controls. Let them do whatever that want to do.

Access our grand caravan 2008 reset procedure repair guide by creating an account or signing into your autozone rewards account. Or remove the hvac ecas fuse for a minimum of 10 seconds. My question is what is the proper re calibration procedure for the blend door actuator once everything is hooked up. Does a fuse need to pulled battery need to be disconnected or did i not wait long enough.

Most of these endpoints are calibrated during the relearn procedure. Before you give up and take it to a dealership try this re calibration procedure from sparky s. Basically you re pulling the fuse and turning the key on then reinstalling the fuse to. But i did that and nothing happened at all.

Re install the hvac ecas fuse. Fixes problems with heating and ac control please visit our website. If you happen to have auto controls the temperature door recalibration is performed as usual but the fuse will be labeled rdo batt. Then turn the key to the on position but don t start.

Once you sign in follow these instructions to access our repair guides. Motor calibration procedure for jeep grand cherokee 99 04 heatertreater. Gmc yukon and chevy tahoe blend door calibration. Try disconnecting the battery for a few minutes.

Heatertreater offers the ultimate solution to blend door repair. If your vehicle has manual controls a recalibration is not possible or needed. The service manual says to it needs to have the key in the run position for 3 minutes.