Climate control works intermittently?

PAULA PENFOLD

MEMBER
2006 TOYOTA SEQUOIA
4WD
AUTOMATIC
250,000 MILES

It works intermittently. I changed the module, the same thing happened. I checked all the fuses checked all connections still nothing. Now it doesn’t work at all.

Tuesday, November 26th, 2024 AT 11:23 AM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

There is a main system ground at the right kick panel I would check. here is a guide to help you check for power and ground which one of them is not working. here is the HVAC system wiring diagrams which I have marked in red the power and grounds that should be checked.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the images (below). Please let us know what happens.

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Tuesday, November 26th, 2024 AT 3:21 PM

PAULA PENFOLD

MEMBER
3 POSTS

Thanks. I’m just a seventy-year-old lady. So, this is Greek to me. It looks like the orange wire.

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Wednesday, November 27th, 2024 AT 7:45 AM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

I can see what looks like the system ground in the top of the second image, but I cannot see the color of the wire. If it is orange, make sure the connection is secure. If the fuses are good and the ground is secure chances are the HVAC controller is bad which you can get on eBay. Here is how to change the part out to help fix it. Check out the images (below). Please let us know what happens. Have a nice thanksgiving :)

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