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      03-01-2021, 02:51 PM   #1
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Washers work just once for each ignition period + also need related wiring diagram

So this is a weird one, my 2010 330d SE washers have suddenly decided they'll only work once (for a few seconds), and then I'll either have to turn the ignition off and back on again or wait a long time (not sure how long atm).

Being a mechanic myself I've come across the regular problems many times, blocked nozzles, partially blocked check valves or partially blocked intake filters (giving brief fluid delivery), dead pump motors, motor spinning but pump not delivering etc. None of these are fixed by cycling the ignition AFAIR! Sometimes tapping silent pumps would temporarily get them going.

But cycling the ignition and it works again straight away? That's a new one to me I think!
Is the pump activated by a relay or via MOSFETS in the BCM?
If the latter, does the BCM have an over current protection to shut off power to prevent damage from frozen or stiff pumps?
If so, any ideas on the current threshold?

There's some basic diagnostics I need to do, but 1st I thought I'd see if there's any common washer pump problems that relate here.

Also, since the demise of newTIS , is their another source of free wiring diagrams?
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      03-02-2021, 04:31 PM   #2
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Don't all shout at once
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      03-02-2021, 07:05 PM   #3
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Most of the libraries here in the States have auto repair online, including wiring diagrams. I'm sure the Brits do the same. Call and ask your library.

If you can't find it, I'll try and post it.
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      03-03-2021, 01:48 AM   #4
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I'm pretty sure our libraries have nothing like that, at least I've never heard of it.
I'll look into it later though just to be sure.
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      03-03-2021, 12:34 PM   #5
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Yep, our county's libraries have no online resources relating to cars.
If you could post a wiring diagram for the windscreen washer system that would be handy .
2010 330d SE (has headlight washers, if it makes any difference).
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      03-03-2021, 12:51 PM   #6
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What's the VIN?
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      03-03-2021, 01:42 PM   #7
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Wbapr92040a181018
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      03-03-2021, 09:20 PM   #8
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See if the attached helps. It got a little stepped on in conversion; the original is a .svg file, which this website won't let me upload. PM me your email address if you want the original.
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      03-04-2021, 01:27 AM   #9
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Thanks
Is A4010a the Body Control Module? (or whatever BMW call it).
And yea I'll PM you.
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      03-04-2021, 08:06 AM   #10
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Assimilator, tell the librarian in Surrey that the libraries in the Colonies have online repair info, and, as such, they should have it also! You never know, maybe just maybe......
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      03-04-2021, 01:41 PM   #11
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Lol, colonies? That was a while ago , I think you guys had a big tea 'party' that put a stop to that!

Anyway, re libraries, no chance I think.
So do your libraries have free access to to TIS?
I looked at Surrey libraries online resources page, nothing about cars was listed.
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      03-04-2021, 04:00 PM   #12
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Forget the libraries nonsense. Marvin was around for the Boston Tea Party.
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      03-04-2021, 04:14 PM   #13
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there used to be free access to this the following site.
https://www.newtis.info/tisv2/a/en/
But it seems to be gated now.
However if you get yourself a K/D can cable and download and
setup Ista D in addition to being the best diagnostics
you can have for your car it has a full set of schematics .
Also guided trouble shooting and maintenance procedures
and diagrams.

I think its the same database as tis.

To to this go to the coding sub forum here.

I would look at the motor sub forum for the Rod Bearing question.

Also your English Bro
https://www.nathansbmwworkshop.com/b...or-dean-videos

diagnostic manual ista/inpa
https://www.google.com/url?sa=t&rct=...xo19teM9vkTF-C
https://www.google.com/url?sa=t&rct=...7x8H3pN8h1fMuF
https://bimmerprofs.com/diagnostics-inpa-part-1/
https://www.google.com/url?sa=t&rct=...lkXEhlQYy4i9Nb
https://www.bimmerforums.com/forum/s...-P-actually-do
https://www.bimmerfest.com/forums/at...1&d=1590283589
https://www.google.com/url?sa=t&rct=...kBbC27TJLX3BGe
https://www.google.com/url?sa=t&rct=...WekqhcC6hsgK2c
primary links

https://www.e90post.com/forums/showthread.php?t=1681573
https://www.nathansbmwworkshop.com/b...or-dean-videos
ista problems
https://www.e90post.com/forums/showthread.php?t=1661945
https://www.e90post.com/forums/showthread.php?t=1581663

Last edited by ctuna; 03-04-2021 at 04:47 PM..
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      03-05-2021, 06:06 PM   #14
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My rod bearing 'question' is a link in my sig to a thread I made regarding oil analysis and it's dubious suitability for tracking rod bearing wear .

Newtis was forced to shut end of last year by BMW, the gated site is BMWs (and it's extortionate! ).

Re ISTA D, hmm I already have that (and other s/w) and a D cable (from cableshack).
I have a feeling that's the software I can't use atm as it requires a dual core CPU IIRC (my ancient laptop is single core), I was supposed to get my sister's old dual core laptop last year, but the pandemic has put a hold on that!
Interesting, didn't realise DIS57 had wiring diagrams, I'll have to look into that.
Thanks for all the links .
Although I can't believe that dean drove his M5 with knocking to a garage 100s of miles away! What an idiot! And his accent annoys me, lol. I won't be watching his videos.

In the meantime, does anyone know if the washer pump's current draw is monitored by the BCM?
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      03-13-2021, 05:29 AM   #15
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No one has operational info for control of the washer pump under abnormal conditions? (e.g when the pump is frozen up, or seizing, or has a restricted intake).

Assuming my laptop hasn't died (their was a very loud pop and the smell of cooked electrics from it last night! But curiously it still boots to the POST screen at least), I will check the BCM for any codes and see if their is any data listed for the pump. And either way, I will take the pump out to see if the intake is restricted with e.g sludge.
But taking my car to work isn't as easy atm as we're not opened over the weekend, I have to book time off and use my holidays for car work!
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      03-13-2021, 01:47 PM   #16
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Finally got around to pulling a code from it, had to use INPA as DIS57 wasn't connecting for some reason, and I don't have my works snap on machine with me.
Anyway, here it is, not that it helps much.

ERROR MEMORY
13.03.2021 18:11:57
JBBF70
Date:
ECU:
JobStatus: OKAY
Variant: JBBF70
RESULT:
1 error in error memory !
FRONT WASH WATER PUMP A6D3
Error counter: 14
Logistic counter: 33
Mileage 171,736 km
Speed 0.00 km/h
Battery voltage 14.67 volt
Signal or value below threshold
Test conditions fulfilled
Error currently not present, but already stored
Error would not cause a warning lamp to light up
Error code: A6 D3 22 00 GE 21 53 DB 00 00 02 11
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      03-26-2021, 02:52 PM   #17
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Took the washer tank out today, the windscreen washer pump filter was nearly completely blocked with black slime, and the inside of the tank was covered with it too.

The tank's shape is a right PITA! You can't jetwash it out!
I tried soaking it (for a relatively short time) with diluted acid wheel cleaner, then washing up liquid, then floor cleaner, then bleach (I think, it said 'anti-biofilm' on it) which was in it for the longest period (~2hrs I think). The floor cleaner seemed to shift some of it, but none of those products shifted it fully. In the end I put the tank back in as I was running out of time.

Anyway, for the time being pump runs just fine now and I cleared the code and it didn't come back. So I guess the BCM (JBE IIRC) does have current sensing, and shuts the pump off after detecting an excessive draw. Would be nice to know for certain, but they you have it.

So, does anyone know how to shift that black slime?
2 people suggested bicarbonate of soda to me, left to soak overnight. Anyone tried that?
Also, anyone know how to stop it sliming up again? [edit] Oh and of course I always use screenwash additive.

Last edited by Assimilator1; 03-26-2021 at 03:19 PM..
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      04-17-2021, 06:20 PM   #18
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Just an update, about a 2 weeks after I cleaned it out it blocked up again, pump would work just once per ignition cycle.
On removing the bottle again I realised I'd forgotten to clean the filler tube originally , so took that out too, jet washed it, and left the bottle soak overnight with (what I think) was bleach.
Back together next day, tested it out with just the ignition on seemed fine.
Packed up tools, got changed and went home.......... and the damn washers only worked once again!! I thought, wtf!? Their is no way it can be blocked this time!
Turns out the extra voltage from the alternator was (I can only assume) putting the washer pump over it's power 'budget' and the JBE was cutting it off.
Pulling the pump off (again) the next day showed no blockage, even running the pump with no filter and the hose off the washer nozzles, it would only work once and for a few seconds (when the engine was running). A new pump fixed it, and it was visibly spraying the screenwash stronger. Oh and the code remains cleared this time of course.

Hopefully this post will save other people wasting as much time as I did!
It seems the blockage done in the old pump (but not completely, and the JBE didn't like it), not too surprising as the car is 11yrs old and has done 107k miles!
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