Wipers blowing fuse

[Valandil]

Hi guys,

My 02 HDI coupe is blowing the wiper fuse every time you try them. Still blows with the motor disconnected, with the fuse removed PP2000 can see the wiper stalk working correctly so I don't think the problem is that side. I can't seem to find a wiring diagram for it, the haynes manual I have (up to 2002 so I assume thats pre-mux) is obviously wrong, and even the owners manual can't get the fuse right. It's blowing fuse 17 under the bonnet, which is supposedly the passengers side electric seat but that's working fine. According to the manual it's fuse 15 which is also the ignition, injection etc but the car still works fine.

So yea I'd like to check whether there's a short between the engine bay fuse box and the motor connector, but like I said I can't find any wiring diagrams? If that checks out ok then I guess it's the engine bay fuse box?

Thanks!

[steve_earwig]

BM34 fuse 17 - windscreen wiper slow speed. I already know it's run off 2 linked relays in the fuse panel, yes they screw up and die



Btw possibly more useful fuse diagrams..
http://i222.photobucket.com/albums/dd19 ... 27d5ba.jpg
http://i222.photobucket.com/albums/dd19 ... 68de57.jpg
http://i222.photobucket.com/albums/dd19 ... e332da.jpg
http://i222.photobucket.com/albums/dd19 ... ff08e5.jpg
http://i222.photobucket.com/albums/dd19 ... 3c2eea.jpg

[Valandil]

Ah that's great, thanks!

Those fuse lists are different to mine, didn't realise the wiper was on two fuses. So I'm assuming fuse 17 in the engine bay covers the auto wipers. On slow and fast does it use both fuse 15 and 17? Because I'm pretty sure I tried those and they weren't working either.

[steve_earwig]

Fuse 15, engine management and windscreen wipers? It don't seem likely. The BM34 diagram I have just shows fuse 17 controlling both relays. I tried to upload it but it's a .gif and it's huge. Hold on...

R7 appears to be on/park, feeding R8 when it's turned on and earthing the motor when it's turned off to park. H is the mux controller thingamajig. Not sure what actually turns them on but I assume it's the BSI which takes signals from the park switch in the wiper box. Probably.

Those diagrams have proved more useful tan others over the year. Mind you, I never did figure out what the asterisks mean, alternative positions?

[OllieNZ]

I'm not seeing the asterisk Steve?

[steve_earwig]

On the fuse diagrams there are some fuses marked with 1 or 2 asterisks, my handbook was in Italian so I never looked at it but Service Box says 1 is for maxi fuses, no mention of 2.

[OllieNZ]

On the fuse diagrams there are some fuses marked with 1 or 2 asterisks, my handbook was in Italian so I never looked at it but Service Box says 1 is for maxi fuses, no mention of 2.

Doh,
I'll check my 307 handbook (if I can find it) and see if it sheds any light.

[frog]

There is a French forum topic that might help you. There is a diode in the BSM box which has a short circuit, causing fuse F17 to get grilled every time.

Quote from that topic:

Type de panne:
-L'essuie-vitre ne bouge plus du tout
-Le fusible dans le compartiment moteur (F17 sur ma Xsara) est claqué
-En fait, le fusible claque à chaque fois qu'on mets le contact au Neiman (je vous conseille un montage avec une ampoule (merci Ballbearing [smileyperso) pour éviter de collectionner les fusibles grillés)
-Le moteur est bon (testé en direct batterie mais si le fusible claque à chaque fois, pas besoin de tester le moteur tout de suite ) )

My own quick "translation" (with a little help from Google translate):

Type of failure:
-The windscreen wiper does not move at all
-The fuse in the engine compartment ( F17 on my Xsara ) is blown
-In fact, the fuse breaks every time I operate the stalk (I recommend using a bulb instead ( thank you Ballbearing ) to avoid getting a large collection of blown fuses )
-The wiper motor is good (tested with live battery but if the fuse blows every time , no need to test the motor right now ) )

Scroll down the topic to see which diode to replace and how to do it.

[Valandil]

Oh wow that's great, thanks a lot! I'm no electronics whiz, any way I can test that diode? Should it have infinite resistance over it, and if not it's buggered?

[frog]

You can only test it if it is taken out. By that time, you might as well put in a new one.

A diode has infinite resistance one way, and a low resistance the other way. Here is a video of some-one testing it. Or you can look here

[Valandil]

Ah right, thanks.

Here's another question, can I put any BSM B5 unit in, or does it have to be the exact same part number? I don't know what the difference between them is!

[frog]

Do you have an account on Peugeot Service Box ? You can create one for yourself for free. Once logged in you can fill in the VIN number of your car and lookup the part number (usually 4 digits followed by 2 letters). That is the part you want to look for.

If you PB me your VIN I can give you a screen dump.

If all else fails, look for a replacement that has all exactly the same numbers on the sticker that should be on your BSM box.

[Valandil]

Yes I've done that, but with that part number (6500Y1) you get units that have a different other number (the long one) to mine. For instance mine is a B5 that ends in 5480, and I've found a B2 that ends in 5180. So yes they have the same part number, but that doesn't convince me they're the same if you see what I mean. Do you think they will be?

[frog]

My experience is that, if it is the same part number, it is compatible.

On http://drostonderdelen.nl/index.php?act ... d=10000039 there are various variants of the 6500Y1, ranging from B3 ... B5 . All 6500Y1s seem to be Delphi (Siemens is 6500Y3). Looking at the images there, all variants of the 6500Y1 seem to have the same plug- and fuse layout (you might have to turn your head (or screen ) to compare).

However... i don't have experience with replacing by a different B number. So i'm not sure. Maybe you can just try at the scrap yard where they sell it. I exchanged mine directly on the parking space, it was the same B number but failed for another reason. So i brought it back directly and got my money back.

Note that when you unmount it, you need to disconnect the battery first. And before disconnecting the battery, let the BSI go to sleep peacefully: pop the bonnet, shut the door and wait 3 minutes before you disconnect the battery. Similarly, don't reconnect it with a door open. (See http://406oc.co.uk/viewtopic.php?f=1&t= ... ep#p240438 .)

[frog]

My experience is that, if it is the same part number, it is compatible.

Reading http://www.forum-auto.com/marques/Peuge ... t92198.htm , it seems that the various B numbers are not compatible :

L'autre soucis etait de savoir si le B5 pouvais prendre la place du B2 voir B3... et en cherchant sur service box je me suis rendu compte que présentement ils avaient tous la meme référence (6500Y1 pour delphi et Y3 pour siemens)... de la j'en ai déduis que ca pouvais fonctionner... et en cherchant plus loin (forum206 pologne) j'ai trouvé la différence entre les différent type B.

en faite le B2 est un entrée de gamme: tout les relais et fusible n'y sont pas, et plus on augmente le numéro plus le BSM est complet...

ce qui veux dire que le B5 a toutes les option: limiteur de vitesse, régulateur de vitesse, laves phares, AB etc...

Translated:

The other concern was whether the B5 could take the place of B2 B3 ... and see by searching service box I realized that now they all had the same reference (6500Y1 for Delphi and Y3 for siemens). .. I had to assume it could work... and seeking further (forum206 poland) I found the difference between different type B.

B2 is for in an entry model: all the relays and fuses are not there, and the greater the number the more BSM is complete ...

which mean that the B5 has every option: speed limiter, cruise control, headlight washers, airbag etc ...

And even with the same B number (and all the other numbers the same), it might still not work, as I experienced myself...