QuestionFan will blow out Defrost Vents and not Reg Vents. Stays in Defrost all the time regardless of where you select the vent switch
AnswerHi Cliff,
There is a mode door that has to move for the air to be directed to the various vents. There is an electrically operated mode door actuator that does that and it is controlled by the body computer. There is a sensor as well that feeds back info to the computer about the motion of the actuator and it can self-calibrate if it is mal-adjusted rather than being non-functional.
The first thing to try is for a self-calibraion test and an evaluation of the ac operation using the control panel to do it:
Starting the tests is fairly straight forward, but following up on any faults requires further action/interprestation of the way the lights are flashing at the conclusion of the first test. All the possibilities cover about 6+ pages in the manual.
But let us give it a try. The engine must be running. Set the blower on HIGH, set mode to the PANEL position, open all AC outlets, Set temperature slide pot(s) to COLD, Depress WASH and REAR WIPER simultaneously for 5 seconds (Until all LED's light). The LED's will stay on for 5 seconds. Calibration tests are running when the rear wiper and intermittent are alternatively flashing. Cooldown test is running when the A/C and recirc lights are flashing.
Acceptable result is when the rear wiper only LED is flashing.
Push rear wiper button to exit.
Interpretation of codes (presumably stored if you don't get the above result) is an involved process for which it would be better to xerox copy and postal mail you the pages.
But if this corrects the problem, that would be great. Otherwise I suspect that the mode actuator needs to be replaced or that the mode door is binding. Fortunately the actuator can be replaced fairly easily if it is necessary to do so.
Roland
PS: Please 'rate' my answer, and where you see the question about 'volunteer of the month' conside a 'yes' response if this proves to be helpful. Thanks
