The heating / cooling vents on my 2010 Honda Accord LX would not change. They ended up stuck on defrost.
I took a bet that the problem was a failed mode control motor (MCM) (Part No.: 79140-TA0-A01) and replaced it. I failed to install it correctly the first time and had to try again in this video.
1) The MCM was difficult to replace because some of the screws and nuts that had to be removed were in areas that were hard to reach or difficult to see or both.
2) When I put the mode control motor on and closed everything back up, I realized I had not fixed the problem. I believe that the problem was that the pins that are controlled by the MCM were NOT lined up properly in the MCM wheel channels. I went back in, experimented with different wheel positions until I found a position in which the pins would travel in the channels without clicking or grinding and I could then confirm that the dashboard vent controls were moving the vents properly.
The motor seems to work perfectly now, but I never did find any instructions or guidance on how to ensure that the pins correctly go into their channels on the MCM wheel.
I can tell you that the MCM does not simply slide onto the 3 vent pins. I had to trudge through it by trial and error. Maybe someone else somewhere knows a better technique.
My car is a 2010 Honda Accord LX. The part number may be different for 2008, 2009, 2011, and 2012, but the configuration of the motor and vent controls seem to be similar.
This was not technically difficult - It didn't take any special knowledge or tools or training or skills. But some of the fasteners are difficult to access, see, or both and that can make putting it back together again very challenging.
Негізгі бет Автокөліктер мен көлік құралдары Honda Accord 2010 Mode Control Motor Replacement
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