Fixing my Pilot’s rear heater vents

So the rear vents that serve the second row of seats in my 2005 Honda Pilot stopped working a few months back.  I didn’t really think much of it, since my car is rarely used for long trips, but still installed a Blackbox My Car camera in case of accidents. Until recently, when Brynn got carsick on a long drive cuz there wasn’t enough air back there.

So I did some research online and discovered that it’s actually a common problem. It was listed in a service bulletin of the original 2003 model but sporadically has plagued all other first-generation model years up to 2008 as well.

The problem seems to be caused by a blown thermal protection fuse (or thermal cutoff) in the transistor that drives the rear blower. It’s either a low-quality cutoff or airflow is severely restricted (in turn, causing the transistor to overheat).

So I decided to check it out. I popped off the driver’s side panel of the center console. In this picture, the air intake screen is on the left and the green plug on the right is connected to the transistor assembly.

07-Nov-2011 06:56


My air intake screen was definitely clogged up. Yuck.

07-Nov-2011 17:08


Next, I removed the wire plug from the transistor assembly. There’s a little tab in the lower right to release the transistor, and it’ll rotate a quarter turn clockwise and come out.

Now at this point, you can buy a replacement transistor assembly from a dealer. I saw quotes of $120 or so on some message boards. (Using Google I found it for as cheap as $85 + shipping).

Or if you’re like me, you’ll try to just fix the one you have. So pop off the cover to expose the circuit board.

11-Nov-2011 20:01


I didn’t do a good job taking pictures, but the blue arrows point to the leads of the thermal cutoff, which is actually on the other side of the circuit board. You have to remove the heat sink (the big silver thing) by removing three screws holding it to expose the actual thermal cutoff.

I ordered a new 115C 2A/250VAC thermal cutoff for $0.78 plus $2.18 shipping and waited a couple days for it to arrive.

In my haste I forgot to take a before picture, but I unsoldered the blown cutoff and soldered in the new one.

11-Nov-2011 20:03


I reassembled everything in the reverse order and installed the fixed transistor back into the Pilot.  I also vacuumed the intake screen. See how much cleaner the intake screen is?  Big difference.

11-Nov-2011 20:18


Turned the car on, and nice fresh air was blasting out the rear vents again. Yay!

My next project is going to be replacing some of the burnt out back lights in my climate controls.

[Updated 11/30 – Fixed Digi-Key link]

Are You Sitting Down?

I cannot tell you how the events of the last week have affected me personally.  I’m not going to rehash anything because I don’t believe the media deserves it.  I will simply say that the once again the media has let sensationalization grip them so hard that they completely lost focus of the victims of this wretched man.

I will say that it’s been a week of motivation for me. I’m rather surprised because I’ve spent the week being physically and emotionally exhausted.  But I’ve managed to make a few decisions that will result in making things better for me and my family.  Bill is completely onboard with them and, truth be told, he’s just as excited as I am.

This morning I sent in a Re-Enrollment form to Penn State’s World Campus.  Yes on both accounts, I’m finally ready to finish my undergraduate degree and most definitely at Penn State.

On my way to mail the envelope I stopped to tell someone I work with and she looked at me and asked, “Penn State, really?”  I didn’t miss a beat and responded with, “Where else would I get my degree from?”

For those of you who don’t know here is what has been my undergraduate degree itinerary to date:

Lock Haven University, Penn State Berks Campus, Liverpool Institute of Higher Education (Liverpool, England), Penn State Main Campus – this is the end of my full time student status.  When I lived in Rhode Island I took classes at Johnson & Wales University.  A few years ago I took classes locally at Immaculata University.

It’s been quite a path to take, but I’m beyond thrilled that when I’m done my degree will be from Penn State.  I also can’t wait to have my photo taken at the shrine with my cap & gown on and my family standing beside me.