Intermittently the dash is not working and the wipers come on and stay on until the key is in the off position

Tiny
RMJ156248
  • MEMBER
  • 2013 DODGE CARAVAN
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 203,000 MILES
The van has an intermittent dash not working and wipers come on and stay on until the key is in the off position even though wiper is in the off position. Turn signals or head lights won't even work when this happens. The multi-function switch was replaced. But it still happens.
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Friday, April 1st, 2022 AT 3:54 PM

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Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Great video. This really helps with figuring this out. The issue is the interior CAN network is down and so the wipers default on so that if it is raining the wipers will work.

Basically, when the CAN network goes down, you may or may not be able to control the wipers so they have to default on in case you cannot. If you look, the headlights will be on as well. This is the same purpose in case you are driving at night, they will be on.

Here is a guide that will help with this:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Since the cluster is off, this is the most likely cause of this but the way to figure this out is to check the voltage on the network at the cluster or another module on this network.

If you look at the wiring diagram, you will want to check the voltage at any module that says CAN IHS.

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

That stands for interior highspeed.

Also, what we can do is check for codes and scan the CAN using this guide:

https://www.youtube.com/watch?v=InIlnsjOVFA

Let me know what you find with this, and we can go from there.

Thanks
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Saturday, April 2nd, 2022 AT 5:54 PM

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