Disco 2 M & S lights - RAVE and Nanocom disagree!

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PopPops

Well-Known Member
Posts
484
Location
Fareham, Hampshire
Hello All,

A bit odd. M & S lights just started flashing and limp home mode going into reverse a couple of times. Nothing unusual there for a Disco 2! Connected Nanocom, fault code P0705, position switch monitor, as I had expected. I used the Nanocom to monitor the WXYZ inputs from the switch as a reference, moving the gear lever a couple of times got rid of the fault. I thought I would compare what the Nanocom said with what's in RAVE as a sanity check for the future, and they disagree, in fact, either RAVE or Nanocom seem to have WXYZ reversed!

This is from RAVE:
RAVEXYZ.jpg


And this is the equivalent from Nanocom:
NanocomXYZ.jpg

Open = "-" and Closed would = 12V in RAVE.
So, is RAVE or Nanocom correct?

And are there any tips for getting the XYZ switch off, apart from growing a few extra hands the size of my 9 year old grandaughter's!!!:p

Thanks!
 

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IMO RAVE is correct cos it's confirmed by the official ZF document too(see attachment page 8) though as long as you have a switch monitoring fault code current it's possible that nanocom shows those incorrect inputs which triggered the fault code
 

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IMO RAVE is correct cos it's confirmed by the official ZF document too(see attachment page 8) though as long as you have a switch monitoring fault code current it's possible that nanocom shows those incorrect inputs which triggered the fault code
Many thanks, what a useful document! Mine's a 2004, but I'm sure not much can have changed.

Yes, it seems Nanocom have reversed the WXYZ. I took the readings when the fault had gone (moved the gear lever a few times) and been cleared. I'll remove the switch and dismantle it, if it ever stops raining here!

Thanks again, what an immense source of knowledge!
 
When off the car its very easy to dismantle with a drill to take the rivets out. If its an brown unit, it may be unsalvageable. The newer black units are simpler.
I cleaned up the contacts and treated with recommended magic oil stuff that sierraferry recommended. Its a pretty simple thing, just seal it all back up with silicone so its waterproof.
 
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