Member Since: 26 Oct 2013
Location: Argyll
Posts: 2929
That's a lot of electrical spaghetti - no wonder they are so difficult to diagnose!Currently 2009 Disco 3 SE, 2013 MY D4 HSE and 2016 D4 SE
Previously:
TD5 Defender 110 CSW (230k miles)
300TDi Disco 1 (289k)
4 RR Classics (300-350k each, 2 manual, 2 auto)
110 V8 CSW (220k)
S3 109 hi cap pickup (ex RN)
S2A 88 Safari SW with lpg conversion (bloody lethal)
19th May 2024 8:33 pm
Davethegeo
Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 919
Electrical spaghetti? It's no coincidence that the only version of MY14 electrical diagrams I can find is in Italian.D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny
21st May 2024 9:19 am
Davethegeo
Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 919
So there I was, ready to crawl under and trace the LIN wire from the alternator to C2531 connector when I realised that the AC and fans were all working correctly. So...an intermittent fault. Those are always harder to trace. I do think that ProfG has hit the nail on the head suggesting a LIN bus problem though.
No sign of voltage spiking as shown on a DVM while driving so hopefully that's one possible cause out of the way.
I'll probably end up just running a parallel wire from the alternator to as far as I can go on the LIN bus trail as there is nothing obviously physically wrong so far with the visible wiring. That can wait for a sunny day soon.D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny
29th May 2024 4:25 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5068
It might just be a plug pin that's not contacting correctly Dave but at least it doesn't appear to be a line break.
If that were to be the case running a parallel line from the alt might be in vain, and you'd have to be certain your remedial efforts were totally sealed especially at the alt end. These things can pull you into places you really don't want to be going!
A case perhaps of "suck it and see" for a while but maybe it has fixed itself. yµ (idµ - eAµ) ψ=mψ
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That's a lot of electrical spaghetti - no wonder they are so difficult to diagnose!
