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After replacing the ambient sensor it still says that it has an open circuit, why?

Tiny
AARONMICHAEL
  • MEMBER
  • 2006 MERCEDES BENZ C230
  • 2.5L
  • V6
  • 160,000 MILES
I have changed the sensor and it still says that it has an open circuit. I don’t know where to begin traces wires non were broken that I could see but that was under-hood. It’s hot and I need my A/C.
Saturday, August 13th, 2022 AT 12:44 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,110 POSTS
Yes, you will need to test the wire continuity and run a new wire if there is none, here is a guide to help you and the A/C wiring diagrams so show you which wires to test in the diagrams below. Do you mean the sun sensor?

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

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Sunday, August 14th, 2022 AT 5:27 PM

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