Does someone know how to perform the calibration? It is referenced in the service manual but I cannot find the procedure. I had only defrost and floor vents working, found the linkage had come disconnected for the dash vents, this is up high in the dash on the right side of the steering column. The actuator is electric which controls a cam which moves arms to move the plenums.

 

You might be able to do the same thing with a battery disconnect, but the actual recalibration procedure has to be done with a DRB

 

Just disconnect the neg terminal for 30 seconds?

 

Yeah. That might take care of the recalibration, I'm not sure. To run the actual recalibration procedure, you have to have a DRB