Electrical gremlins strike again!!!!

[MoggyBlue]

Originally Posted by MarkS

https://www.the75andztclub.co.uk/for...d.php?t=310536

Checkout the whole thread.

Thank you I believe I've come across this thread whilst doing some digging. I've been advised by Chris to look at the k bus header connector which I'll do on the weekend

And he's trying to help get it sorted before resorting to using t4 it seems so fingers crossed and thanks

[cb750chris]

Good luck this weekend.
Because the k bus is joined together - so all wires are 'common', the t4 isn't always the most useful tool - it just helpfully tells you there is a problem on the k bus, and gives a few pointers which connectors to look at.

[womble12]

I've just recently had almost the identical issue on my ZT-T.


I was in the process of stripping down the dashboard / foot well fascias and unwrapping the K-bus header connector up behind the LSM when I thought it might be an idea to quickly check the boot.


Sure enough, in the CD changer compartment in the boot, there was a connector including a K-bus wire (white/red/yellow) sat in a pool of water. The round 9-or-so pin plug into the CD changer was also showing signs of corrosion when dissassembled.



Dried the unused connector off, and disconnected the CD changer round plug, and voila! All systems restored.


My next place to check would have probably been the electric seat connectors - my thoughts being that if the carpet had gotten wet with all the snow etc. recently that maybe the plugs had gotten wet there too.


Failing all of that I would have continued with the K-bus header plug diagnostics.


Worth a check of the easy things before the hassle of stripping down the dash!

[MoggyBlue]

Hello guys so a quick update! And a massive thank you to Chris!



After being completely lost on my findings Chris very kindly booked me in to see if he could find the problem



After checking the basics and resorting to co289 plug he found there was something sucking power giving about 6 volts. hense the intermittent problem.



And finally narrowed it down to the reserving sensor module so currently driving it for a bit to check the fault doesn't come back again

Absolutely over the moon with the service and result

So thank you Chris!

Ps please correct me Chris if I got anything wrong

[COLVERT]

Quote:-- Moggy.--And finally narrowed it down to the reserving sensor module

What sensor is that please.--

[MoggyBlue]

Originally Posted by COLVERT

Quote:-- Moggy.--And finally narrowed it down to the reserving sensor module

What sensor is that please.--

Was the reverse sensor module up on the N/S behind all the satnav and cd changer in the boot



I assume there's only the one?

[MarkS]

Originally Posted by COLVERT

Quote:-- Moggy.--And finally narrowed it down to the reserving sensor module

What sensor is that please.--

Isn't that the one that enables the car to assign vital replacement parts to your eBay watch list ??

Damned clever the technology in these BMW cars.

[Arctic]

It's one of these Reversing sensors below, early cars had black box facelift white box.

1

2

3

Tourer one
4

[MoggyBlue]

Originally Posted by Arctic

It's one of these Reversing sensors below, early cars had black box facelift white box.

1

2

3

Tourer one
4

Interesting....

I'm finding mine stranger and stranger then.

Mine is a preface lift. According to Chris though it has a facelift wiring loom on it
Also has the facelift TV in the headlining



Oh and the white reversing sensor module!

[trikey]

Lots of MK1 cars had the later wiring looms 2003 onwards was the changeover time.