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