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.
Blend door calibration procedure.
But i did that and nothing happened at all.
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It only applies to the temperature door actuator.
If you happen to have auto controls the temperature door recalibration is performed as usual but the fuse will be labeled rdo batt.
Before you give up and take it to a dealership try this re calibration procedure from sparky s.
Then turn the key to the on position but don t start.
A trouble code may set if the components start to wear and the endpoints drift too far from the pre programmed positions.
My question is what is the proper re calibration procedure for the blend door actuator once everything is hooked up.
Motor calibration procedure for jeep grand cherokee 99 04 heatertreater.
The hvac control head uses its pre programmed logic and actuator endpoints to position the door correctly.
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Don t touch the hvac controls.
Gmc yukon and chevy tahoe blend door calibration.
Basically you re pulling the fuse and turning the key on then reinstalling the fuse to.
If your vehicle has manual controls a recalibration is not possible or needed.
Most of these endpoints are calibrated during the relearn procedure.
Heatertreater offers the ultimate solution to blend door repair.
Re install the hvac ecas fuse.
Try disconnecting the battery for a few minutes.
Does a fuse need to pulled battery need to be disconnected or did i not wait long enough.
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A re calibration may fix you up.
Let them do whatever that want to do.
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.
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Or remove the hvac ecas fuse for a minimum of 10 seconds.
5 if lights continue to flash after 3 minutes manual system or 20 seconds auto system the control unit has detected a failure.
