The Mitsubishi Pajero Owners Club®

4m41 · Posted: Wed Nov 17, 2010 14:06 Post subject:

waynec,

Sorry for being so persistent, but were u able to check the grounding point? Smile

TIA

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waynec · Posted: Sat Nov 20, 2010 10:37 Post subject:

Pin 2 earth comes from the ECU, so does the pin 3 feed, it could be a ECU fault, but the ECU's on these don't normally give much trouble......

4m41 · Posted: Wed Nov 24, 2010 6:30 Post subject:

waynec,

sorry for the delayed response.....was down with flu!

Hv rechecked the pump wiring........pin 3 is giving the same 5 volts and this time there is little bit of continuity between pin 2 and ground earth (very high ohms).

Should there be any resistance in the pin 2 & earth continuity?

TIA

waynec · Posted: Wed Nov 24, 2010 23:34 Post subject:

4m41 · Posted: Thu Nov 25, 2010 6:26 Post subject:

Should I ground pin 2 directly with a piece of wire from the chassis just to check if things improve?

TIA

waynec · Posted: Thu Nov 25, 2010 20:02 Post subject:

4m41 · Posted: Fri Nov 26, 2010 5:55 Post subject:

waynec,

Will go through the wiring once again and get back to you.

Thanks for your tremendous help.

aseem · Posted: Sun Mar 16, 2014 17:45 Post subject:

I realise this is an old thread but I have this fault code; I have the correct voltage on pin 3 but not continuity on pin 2?

Also my speedo has stopped working, is it possible these 2 things are linked?

aseem · Posted: Sun Mar 16, 2014 18:51 Post subject:

Sorry I meant rev counter

mike_r · ** Joined: 23 Jan 2013 Posts: 99 Location: United Kingdom

I believe the rev counter gets it signal from one of the two sensors between the pump and the engine. you would have unclipped these to remove the pump, so its possible.

aseem · Posted: Mon Mar 17, 2014 21:29 Post subject:

Thanks for confirming the 2 faults are most likely linked - I have not removed my fuel pump, I am trying to figure out why I dont have continuity on the connection from the ECU

The guide I am using says I should trace the harness but it is very difficult as it goes into a massive bunch of wires

Does anyone have any tips on how I should go about this and also were exactly my ECU is and where I can check its earth connection?

I've pulled the panels off under the glove over the weekend and had a look around when I was conducting the above multimeter test but didnt find it and lost the light so had to give up

And help with this would be greatly appreciated or if you think I need an auto electrician as its a difficult job please let me know I am defo an amateur

geodrome · Posted: Mon Mar 17, 2014 21:38 Post subject:

What physically is wrong?

aseem · Posted: Mon Mar 17, 2014 22:00 Post subject:

Last week I drove the truck, it lost power and started smoking at the same time the rev counter stopped working so I drove it straight to my local garage and read the fault codes which were

46 Injection ADV Volts and 51 EGR Position Sensor

I have tried changing the speed sensors on the pump and also taking off and cleaning the EGR valve neither helped

I have an EGR blanking kit on its way as someone I know had the same behaviour and this sorted his I will know in a couple of days if it fixes mine

I have read all the posts about the fuel pump issues, I have had the truck about 5 months after upgrading from my MK2 - I did have to replace the filler pipe it was quite rusty but hadnt quite gone through I also put some dry fuel in and have put a fuel system cleaner through it and it has been fine for months so I was hoping I had escaped the issue but now dont know

I was looking up the 46 fault when I found this post and tried the above test and have found a lack of continuity on pin 2 whilst the voltage on pin 3 is correct

Thats were I am so far... hope you can help

geodrome · Posted: Mon Mar 17, 2014 23:05 Post subject:

You don't say what model,transmission year?
How did they get the codes? What code reader?
There is a code 46 for the pump but no code 51.
Those numbers do relate to terminals on the ECU.
If they plug in a code reader did it make the CEL on the dash flash? If so count the flashes long ones are tens short ones are 1-9. Ie two long and three short would be code 23.
Pre 2004 do not talk to most readers.

aseem · Posted: Tue Mar 18, 2014 8:21 Post subject:

Its a 2003 Mk3 3.2 Diesel Automatic

I got the codes myself using their Snap-on Fault reader with a digital display

I have used it previously to diagnose the flashing diff error I've also already had and it identified the switches which needed changing so I'm pretty sure the communication is working fine

Fault 46 cannot be cleared and fits with this lack of continuity - I'm really looking for some pointers on this if possible - is it likely to be a broken wire, bad earth or a more serious issue with my ECU -what and were should I be looking?

Fault 51 can be cleared but come back as soon as I start the vehicle and also at the moment fits as the EGR was pretty clogged up and not moveable - when I blank this off I will check if this goes away

Any help on this is appreciated; big thanks in advance...