"New" harness, noise is gone but the bottom ABS light stays off

[B-Maniak]

Because of that

https://www.youtube.com/shorts/EBh5PQMZx1g

I've checked the bike and discovered this



Gearbox ground unfixed

With its consequences









For the curious guys, W/B wire is for the lower ABS bulb



So I changed the whole harness for an used one, because BMW is not selling those anymore



to finally get this

https://www.youtube.com/shorts/SRJ34Ay5eNw

Think the electronics of the ABS is shot.

Or any ideas?

 

[DrFarkoff]

Have you tested for power and ground on the lower bulb ??

What happens if you Press the ABS button ??

Are you getting power on Wire 15 of the ABS connector??

 

[B-Maniak]

There is power and ground on the lower bulb.

Nothing happens when pressing ABS button

There is power on Wire 15 on the ABS connector. And 14 too.

 

[DrFarkoff]

There is power and ground on the lower bulb.

Why does the bulb not light ? If you have both ???

Nothing happens when pressing ABS button

It should stop flashing and only the lower light should come on!

There is a way to emulate the button if it is faulty BUT need to check I think its wire 21 to ground BUT PLEASE VERIFY !

 

[B-Maniak]

Why does the bulb not light ? If you have both ???

Don't know ?!?

It should stop flashing and only the lower light should come on!

There is a way to emulate the button if it is faulty BUT need to check I think its wire 21 to ground BUT PLEASE VERIFY !

What I'm thinking is that if it was hot enough to melt the ABS plug and connector, it may also have fried something inside the ABS.









So it might help to find an used ABS electronic part for testing.

BTW who knows the name of those head screws? Because Booble image sent me there: https://lens.google.com/search?p=AU...GWVVVUjFWV2RKVkUxaWJEZG5lV1V3Ums1U1p3PT0iXQ==

Before I'll drill the head, I'll try to find the right tool.



Doesn't look to be the three wing neither the Y one???

 

[squibb34]

Sounds like a plan. I use one of these, which covers most small security fixings ............ https://www.amazon.co.uk/PROSKIT-Ratchet-Screwdriver-62-Bit-Bits/dp/B00STMVJII

 

[B-Maniak]

 

[B-Maniak]

It was a good plan.





Luckily I had an old circuit board on the shelf.

And had significant progress, ABS low bulb finally lights up.

Looks like I just need to do a reset now.



I also wanted to thank those who do the difficult job of remote diagnosis to help all those in need