on March 1, 2018, 8:06 am, in reply to "Re: RENAULT MEGANE / WON'T START FROM COLD"
The 4v wire is interesting,I guess that is measured with a DVM, can you get a scope on it to see if it is a LIN communication signal as I guess it should be.
presumably you have tested the 12v & earths while connected i.e. under load.
Aidan
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Renault Megane 1.5 dCi 2011 - Code DF025 preheating unit connection open circuit - Fixed # - Ian Waring February 28, 2018, 10:08 pm
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