No power to heating/AC/entire climate control buttons

L.A.

MEMBER
2010 HONDA CIVIC
2WD
AUTOMATIC
290,000 MILES

I believe that the power has disconnected from my heating/AC/entire climate control buttons. They don't light up and I can't press any of them. Nothing works and it will not blow any air or defrost. It seems like there is no power going to that entire portion. Is there somewhere I can check to see if something disconnected?

I hit a bump one day and everything came back on for a few minutes. Hit another bump and it all shut of again.

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,779 POSTS

Hi,

First, check the No. 36 (10 A) fuse in the under-dash fuse/relay box. See pic 1 below for location.

Next, the HVAC control unit 24P connector is located on the rear of the control unit in the dash. Check to make sure it isn't loose. See Pic 2.

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Here are a few links you may find helpful:

https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

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

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

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Let me know what you find of if you have other questions. If the fuse is good, there is power to it, and the connector is tight, we need to start checking for power to the control unit. I will help you with that if needed.

Take care,
Joe

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