Climate control works but not the lights?

2016 MAZDA CX-9
40,000 MILES • 2.5L • 4 CYL • 4WD • AUTOMATIC
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CALISUPRAMBA
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Car came back from a shop to change the windshield. I was driving in the dark and noticed that the climate control lights weren’t working. The module works perfectly fine, I have A/C, heat, can change temperature, but none of the lights on that module works.

Headlights are on.
Max brightness.
Center console lights and dash lights work.

Thanks in advance.
Dec 28, 2022 at 1:03 PM
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CALISUPRAMBA
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Everything works but no lights.
Dec 28, 2022 at 6:36 PM
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CALISUPRAMBA
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No lights on climate control.
Dec 28, 2022 at 6:36 PM
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STRAILER
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There is a ground wire (g10) on the left side of the dash that must have been left off or is not working. If these are the only lights not working, if more illumination lights are not working, I would check the panel fuse 7.5 amp in the fuse panel in the left side of the passenger's compartment. This guide will help you I have included the fuse location well:

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

Check out the images (below). Please let us know what happens.
Dec 29, 2022 at 11:44 AM
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CALISUPRAMBA
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Thanks ken, how do I find this ground wire?
Dec 29, 2022 at 3:29 PM
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STRAILER
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Look around under the left side of the dash with a flashlight, it should be obvious. How was the fuse? You can call the shop that did the windshield to see if they remember disconnecting it.
Dec 31, 2022 at 12:11 PM
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RAVCX9
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Hello,

I have this same problem.
I checked and there is no fuse box named Panel. Regarding the G10 wire, I have absolutely no idea which one it could be. There are a lot of wires under the dashboard and for a layman, I don't know which one it is G10
Sep 28, 2024 at 4:02 AM
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RAVCX9
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Hello,
I have this same problem. I checked and there is no fuse box named Panel. Regarding the G10 wire, I have absolutely no idea which one it could be. There are a lot of wires under the dashboard and for a layman, I don't know which one it is G10.
Sep 28, 2024 at 4:05 AM
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RAVCX9
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Hello,
I noticed a few days ago that the backlighting of the climate control panel buttons disappeared.
Is there a fuse responsible for this?
It may be a trifle, but when driving at night, apart from the display, the entire panel is dark and you have to operate it blindly. You can't see whether functions such as zone 3/rear climate control or rear window heating are on, etc.

Before it goes to an electromechanic, maybe there is some advice.

P.S. A few days ago, a marten was a guest under the hood.

This problem has already been described here.
I checked and there is no fuse box named Panel. Regarding the G10 wire, I have absolutely no idea which one it could be. There are a lot of cables under the dashboard and for a layman, I don't know which one it is G10

Patient
Mazda CX-9 TC Signature, Canada, 2.5T
Sep 28, 2024 at 7:30 AM
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STRAILER
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This problem was probably the HVAC control module. I would check the fuses and if okay replace the module her is how. You can get a used unit on ebay. Check out the images (below). Please let us know what happens.
Sep 28, 2024 at 11:02 AM
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RAVCX9
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Hello,
I noticed a few days ago that the backlighting of the climate control panel buttons disappeared.
Is there a fuse responsible for this?
It may be a trifle, but when driving at night, apart from the display, the entire panel is dark and you have to operate it blindly. You can't see whether functions such as zone 3/rear climate control or rear window heating are on, etc.

Before it goes to an electromechanic, maybe there is some advice.

P.S. A few days ago, a marten was a guest under the hood.

This problem has already been described here .
I checked and there is no fuse box named Panel. Regarding the G10 wire, I have absolutely no idea which one it could be. There are a lot of cables under the dashboard and for a layman, I don't know which one it is G10

Patient
Mazda CX-9 TC Signature, Canada, 2.5T
Sep 28, 2024 at 11:31 AM (Merged)
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RAVCX9
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Do you think that this won't be a problem for me with the G10 cable? I'm asking because my windshield has also been replaced. The previous owner replaced it.
Sep 28, 2024 at 1:58 PM
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RAVCX9
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My replies don't appear immediately after I write them.
Sep 29, 2024 at 6:54 AM
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STRAILER
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Lets check the power and grounds and if there are okay I would replace the HVAC controller. Here is a guide to help and the HVAC wiring diagrams.

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

These will show the power and ground circuits and which pins they are. Use the test light to check them. Please go over the guide before you begin.
Sep 29, 2024 at 9:49 AM
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RAVCX9
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I thought it would be easiest to find that G10 cable and check. I took pictures from under the dashboard. Finding it from the diagram you sent is too difficult for me. I don't know it well enough.
Sep 29, 2024 at 10:17 AM
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STRAILER
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If you use the guide above it will test the ground without having to find it
Sep 29, 2024 at 10:18 AM
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RAVCX9
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Can you help me find this G10 cable? Because
#calisupramba- the person before me who had the same problem probably solved it with your help. In her case it was probably this cable.
Sep 30, 2024 at 12:55 AM
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STRAILER
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They only give us the location they don't show the exact placement. But if you remove the HVAC control head you can just use a test light to check the ground connection for the electrical connector, make sure it is unplugged when you test it and if good replace the HVAC control head. Please recheck the post above for instructions.
Oct 1, 2024 at 9:33 AM