Adrian Flux : 01553 845 945

The Mitsubishi Pajero Owners ClubŪ
The Mitsubishi Pajero, Shogun, Montero, Challenger, Raider and EVO 4x4 Owner's Club
 
The POCUK - it's not just a Club, it's a way of life!

 FAQFAQ   SearchSearch   Watched TopicsWatched Topics   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your personal messagesLog in to check your personal messages   Log inLog in 
CalendarCalendar   POCUK Club ShopClub Shop  Click here to enter the chat roomChatroom  POCUK Classified Ads serviceClassified Ads
POCUK home pagePOCUK Home  POCUK ForumsPOCUK Forums  Click here to link to the Pajero Owners Club in Poland!POC.pl  Yellow Diamond ClubsYellow Diamond Clubs

Alternator exciter wire


 
Post new topic   Reply to topic    The Mitsubishi Pajero Owners ClubŪ Forum Index -> Electrical issues
View previous topic :: View next topic  
Author Message
Chris_944
**
**


Age: 39
Zodiac: Scorpio
Joined: 25 Sep 2012
Posts: 79
Location: Bridgend

PostPosted: Tue Nov 05, 2013 22:57    Post subject: Alternator exciter wire Reply with quote

Alternator stopped working on the way home from the MOT last week.... Typical. After changing the alternator and it still not working I traced the issue to the exciter wire. It's not giving 12 volts. As soon as I bypass the wire and run 12 volts to the alternator from the batt it works. I traced the white exciter wire to behind the dash tonight but it only ever seems to get around 3 volts...

Can't understand how its suppose to work? Only thing I can think is that the binnacle is fubarred

It's a mk1 2.5 td btw
Cheers Chris
Back to top
View user's profile Send personal message
Google
Sponsor







PostPosted: Tue Nov 05, 2013 22:57    Post subject: Google Ads keep the POCUK free to join!


Back to top
trekker
********
********


Age: 78
Zodiac: Scorpio
Joined: 25 Jun 2012
Posts: 5104
Location: Zimbabwe

PostPosted: Wed Nov 06, 2013 12:27    Post subject: Reply with quote

chris

From my wiring diagram; the thin white wire on the plugin connector at the alternator is fed from the Glow Control Unit, also feeding the dash charge indicator light. As the GCU isn't powered when the engine isn't running, you may not have power to this wire at the alternator.

On the same plugin connector at the alternator is a second thin wire which is fed from number 7 fuse in the dash fuse box, it's a 10 amp fuse. So remove and test this fuse, and all the fuses if need be.

Let's know how you manage.
Back to top
View user's profile Send personal message
Chris_944
**
**


Age: 39
Zodiac: Scorpio
Joined: 25 Sep 2012
Posts: 79
Location: Bridgend

PostPosted: Wed Nov 06, 2013 14:23    Post subject: Reply with quote

Thanks Trekker, I will check all of the fuses again tonight although I'm thinking maybe it's a loose wire or bad connection maybe. If you rev the car hard then the light will flicker.

Everything I have read though says the white exciter wire needs a constant 12v feed to tell the alternator to work. Interesting about the Glow control unit though. Any idea where that sits?

Cheers
Chris
Back to top
View user's profile Send personal message
trekker
********
********


Age: 78
Zodiac: Scorpio
Joined: 25 Jun 2012
Posts: 5104
Location: Zimbabwe

PostPosted: Wed Nov 06, 2013 16:19    Post subject: Reply with quote

The GCU sits on the passenger side, right below the glove box. It's a rectangular metal box, very roughly 150 x 170 x 20 mm thick, with a plug in 8 ? way connector. Packed with electronics, but often the prob is popped capacitors, not expensive to repair.

The alternator drives the rev counter on the Gen 1. Is the rev counter reading about right ?

I think you're back feeding the white wire, hence the 12 volt. I think the constant 12 volts you refer to is only when the engine is running.

If you can't trace the fault, I suggest a quick trip to an auto elect shop, they'll identify the prob in a flash. And don't rule out a faulty new generator.

Keep in touch.
dave
Back to top
View user's profile Send personal message
Chris_944
**
**


Age: 39
Zodiac: Scorpio
Joined: 25 Sep 2012
Posts: 79
Location: Bridgend

PostPosted: Thu Nov 07, 2013 19:34    Post subject: Reply with quote

Cheers Dave, been hammering down here for the last few days. Hopefully it'll have a rest over the weekend so I can get out there and take another look Smile
Back to top
View user's profile Send personal message
bertiebrassett
*
*


Age: 65
Zodiac: Leo
Joined: 10 Apr 2011
Posts: 17
Location: Glasgow

PostPosted: Fri Nov 08, 2013 15:27    Post subject: Alternator, help, and where is the alternator relay?? Reply with quote

Hi all, thanks in advance,

I replaced my alternator on the 9th October 2013, admittedly recon, but looks like a new one so professionally done?? last weekend Saturday morning batteries flat, when checked new alternator had packed up, they replaced it under warranty no problem, fitted it on Tuesday 5th. checked voltage charge 15. something volts, as batteries were low so thought ok (is it) but thought it should be around 14V.

This morning on the way to work, noticed while driving the ignition lights were dimly lit, when I arrived at work turned off and turned back on no ignition lights, checked alternator down again.

When the first replacement was put on everything was checked apart from relay, as we could not find it (any body know where it is or which one it is) so I know all is well with wiring, fuses etc.

I don't want to fit a third if there could be a fault other than a faulty alternator recon!!!
Back to top
View user's profile Send personal message
Display posts from previous:   
Post new topic   Reply to topic    The Mitsubishi Pajero Owners ClubŪ Forum Index -> Electrical issues All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum


All contents © Hobson's Choice IT Solutions Ltd 1997 on
Powered by phpBB © 2001, 2002 phpBB Group