the roadie said:Did you accomplish the 90-second fuse-pull HVAC control module recalibration process properly? Did you see the mode actuator go through its range of motion during the recalibration? Did you let the recalibration process finish without touching any of the controls?
the roadie said:You can mess up an actuator by turning the power back on and running the recalibration process with it OUT of the vehicle.
With the actuator installed, and the ignition off, pull the HVAC-B fuse for ten seconds. Put it back, then turn the ignition on and don't start the engine. Don't touch any controls for two minutes. Watch and listen for the actuators to go through their paces. Then press a control and see if the actuator moves. I assume you have the dash panels off and can observe the actuator. Otherwise you just have to a functional test.
smooth605 said:Should the AC controls be off before I pull the fuse out and turn the ignition on with the engine running?
Some folks advise that. My experience is that it doesn't matter. If I was the programmer on the module project I certainly wouldn't assume a mechanic or the owner would think to shut off the HVAC controls before changing a battery, for instance, which ALSO forces an actuator recalibration.smooth605 said:Should the AC controls be off before I pull the fuse out and turn the ignition on with the engine running?
the roadie said:Some folks advise that. My experience is that it doesn't matter. If I was the programmer on the module project I certainly wouldn't assume a mechanic or the owner would think to shut off the HVAC controls before changing a battery, for instance, which ALSO forces an actuator recalibration.