Searching for earth points

[elty001]

That's the problem with intermittent faults,hard to pinpoint.
As you said its trial and error.
Could be a wire or sensor or just a combination of small things causing your issue.
I was just thinking along the lines of what was different before you got the fault.

 

[Lazy-Ferret]

Here you go Alex, Body Grounds Check out of the manual... http://bebrs.pie-dabas.net/Webs/Terrano/R20/el.pdf

You better read this properly, rather than your usual skim reading, as this took a fair bit of work... :augie:doh

The following sections list each harness, and it's ground points. On the relevant page number is what uses each of those grounds, so for example the "DATA LINK CONNECTOR" is on page EL19, and used "MAIN HARNESS" M846/M845 Grounds

EFC HARNESS RHD MODELS Page EL18
F47
F36

MAIN HARNESS RHD MODELS Page EL20
M846
M845
M754
M33
M761

ENGINE ROOM HARNESS RHD MODELS Page EL21
E222
E224
E154

BODY HARNESS Page EL22
B10
B18
B96
B109

Once you have found the Ground, you can then go to the corresponding page for the location of the Ground on these pages, and it will give you a rough idea where you need to be looking. EG, M846/M845, are in the MAIN HARNESS ENGINE COMPARTMENT Page EL256 and appear to be near the wiper motor


MAIN HARNESS ENGINE COMPARTMENT Page EL256
M33 O/S Wing in front of fuse box.
M845 N/S, possibly near Wiper Motor
M846 N/S, possibly near Wiper Motor


EFC HARNESS ENGINE COMPARTMENT Page EL272
F47 N/S Foot well, behind kick panel, by bonnet release.
F36 N/S under air Filter.

Engine Harness Page EL276
E111 Alternator
E149 Starter Motor
E152 Alternator
E153 Alternator
E154 Body Ground


PASSENGER COMPARTMENT Page EL258
M754 O/S Foot well, behind kick panel.
M761 Some where behind Glove Box.

Body Harness Page EL280
B10 Possibly N/S Boot, by rear lights
B18 Somewhere under passenger seat
B96 SHIELD WIRE (AIR BAG DIAGNOSIS SENSOR UNIT) Somewhere under Rear N/S seat
B109 SHIELD WIRE (AIR BAG DIAGNOSIS SENSOR UNIT) Possibly under drivers seatbelt Mech

 

[AlexD333]

Here you go Alex, Body Grounds Check out of the manual... http://bebrs.pie-dabas.net/Webs/Terrano/R20/el.pdf

You better read this properly, rather than your usual skim reading, as this took a fair bit of work... :augie:doh

The following sections list each harness, and it's ground points. On the relevant page number is what uses each of those grounds, so for example the "DATA LINK CONNECTOR" is on page EL19, and used "MAIN HARNESS" M846/M845 Grounds

EFC HARNESS RHD MODELS Page EL18
F47
F36

MAIN HARNESS RHD MODELS Page EL20
M846
M845
M754
M33
M761

ENGINE ROOM HARNESS RHD MODELS Page EL21
E222
E224
E154

BODY HARNESS Page EL22
B10
B18
B96
B109

Once you have found the Ground, you can then go to the corresponding page for the location of the Ground on these pages, and it will give you a rough idea where you need to be looking. EG, M846/M845, are in the MAIN HARNESS ENGINE COMPARTMENT Page EL256 and appear to be near the wiper motor


MAIN HARNESS ENGINE COMPARTMENT Page EL256
M33 O/S Wing in front of fuse box.
M845 N/S, possibly near Wiper Motor
M846 N/S, possibly near Wiper Motor


EFC HARNESS ENGINE COMPARTMENT Page EL272
F47 N/S Foot well, behind kick panel, by bonnet release.
F36 N/S under air Filter.

Engine Harness Page EL276
E111 Alternator
E149 Starter Motor
E152 Alternator
E153 Alternator
E154 Body Ground


PASSENGER COMPARTMENT Page EL258
M754 O/S Foot well, behind kick panel.
M761 Some where behind Glove Box.

Body Harness Page EL280
B10 Possibly N/S Boot, by rear lights
B18 Somewhere under passenger seat
B96 SHIELD WIRE (AIR BAG DIAGNOSIS SENSOR UNIT) Somewhere under Rear N/S seat
B109 SHIELD WIRE (AIR BAG DIAGNOSIS SENSOR UNIT) Possibly under drivers seatbelt Mech

OH MY GOD!!!

IM GOING TO CALL NISSAN :lol

Thankyou so much for the info!!!

 

[rustic]

...
You better read this properly, rather than your usual skim reading, as this took a fair bit of work... :augie:doh...

Well I hope he follows it carefully, that posting was awesome, and certainly would have taken a lot of time compiling it.
I too have spent a long time on similar forums, to then find the person at the other end just saying... " I won't bother"

Puts you off sometimes...

I hope Alex can be benefit from it.

Rustic

 

[elty001]

should make it a sticky then everyone can benefit from clive's hard work.:thumb2

 

[AlexD333]

Well I hope he follows it carefully, that posting was awesome, and certainly would have taken a lot of time compiling it.
I too have spent a long time on similar forums, to then find the person at the other end just saying... " I won't bother"

Puts you off sometimes...

I hope Alex can be benefit from it.

Rustic

I am eternily grateful for the post, its one of the best replies I've ever had, but we are talking mega out of my capacity here

Question is, do I send it to Nissan or Does anyone here with electrical knowledge want a Christmas Bonus?

I am happy to pay for the work as I realise this will be a pig of a job no doubt.

Perhaps I should get a quote from Nissan, I am suspecting £150/£200 should get the ball rolling

Ideas anyone?:nenau

 

[Fez_uk]

Perhaps I should get a quote from Nissan, I am suspecting £150/£200 should get the ball rolling

Ideas anyone?:nenau

I doubt it, more like we are not interested or we won't know what it will cost and just charge you a hourly rate thats something stupid like 50-60+ pound a hr.

Best off finding a good local motor electric specialists.

 

[AlexD333]

I doubt it, more like we are not interested or we won't know what it will cost and just charge you a hourly rate thats something stupid like 50-60+ pound a hr.

Best off finding a good local motor electric specialists.

Yes perhaps, the only issue there is you loose the "nissan expereince" yes some spotty teenager who has never seen a terrano in his life :augie

 

[Barrbeast]

Alex mate it's not rocket science...

if you think you have a bad earth remove all the earth straps clean them up & clean up (to shiny metal) the points they mount to on the body:thumbs

Hardly needs lots of electrical knowledge, just need some emery paper mainly and away you go:nenau... exactly the same as I did when I mounted my CB Aerial to the bullbar (had to clean up the mount)

The hard part is going to be finding them all I reckon.

 

[AlexD333]

Alex mate it's not rocket science...



Hardly needs lots of electrical knowledge, just need some emery paper mainly and away you go:nenau... exactly the same as I did when I mounted my CB Aerial to the bullbar (had to clean up the mount)

The hard part is going to be finding them all I reckon.

Now speaking from experience as I did one the other day, a simple bolt took me about an hour as it was seized to the nut on the underside :doh

I dont have the tools or the skills to even dream of attempting this, let alone the possible dismantling to get to it. I suspected there was another earth next to it actually underneath the coolant bottle "frame" as I cannot reach it I cannot check looked like a good one to start.

 

[AlexD333]

Right, Im trying to get my head round this, Now by my caculations :doh
If im right :doh

I am searching for an earth that both CPS and INJ could both run off.

It looks like I may have found an important earth on this diagram? (Top right)

 

[Sweety]

Only earth I can see on that is the battery earth unless i've over looked one:augie engine bay earth's might take a bit longer to clean up due to rust etc but it's worth doing, the ones inside the cab should come off easily. Do 1 or 2 a day & in no time you'll have them all clean & as I said before the trucks electrical system will love you for it:thumbs

 

[rayf3262]

Buy yourself a fiberglass abrasive pen, it will make the job much easier.
It's not too aggressive and good for cleaning most electrical connections.

http://uk.farnell.com/duratool/d02266/pen-pcb-cleaning-fibreglass-4mm/dp/2102028?ost=fibreglass+pen

http://www.ebay.co.uk/itm/Fibre-Gla...ls-Fiber-/281178279715?_trksid=p2054897.l4275

 

[Fez_uk]

Yes perhaps, the only issue there is you loose the "nissan expereince" yes some spotty teenager who has never seen a terrano in his life :augie

What nissan experience? The overcharging part or the part where they don't want anything to do with you?

The spotty teenager that still may know his stuff, Don't judge a book by it's cover...

 

[elty001]

Only earth I can see on that is the battery earth unless i've over looked one:augie engine bay earth's might take a bit longer to clean up due to rust etc but it's worth doing, the ones inside the cab should come off easily. Do 1 or 2 a day & in no time you'll have them all clean & as I said before the trucks electrical system will love you for it:thumbs

yes your right mate,just the one top left of the picture.

 

[Lazy-Ferret]

Spent some time looking round the engine bay, looking for the earths, and I have to say.... The manual Lies!!!!...

I found the one on the O/S inner wing, it shares a bolt with the bonnet alarm switch.

I looked all over the N/S inner wing, and could not locate the one over there, but I do have quite a few additions over that side which may well be hiding it now.

The one specifically for Alex, which I thought was over by the Windscreen Wiper, after having a good look, I now think is actually on the Inlet manifold here.....

Fortunately, most of the others are inside the car.

 

[Sweety]

I looked all over the N/S inner wing, and could not locate the one over there, but I do have quite a few additions over that side which may well be hiding it now.
.

The N/S one is on the alternator top braket where the adjuster bolt is & runs down to the bottom lip of the inner arch/wing (black wire with yellow tracer):thumbs

 

[AlexD333]

Thanks chaps, I will check for these, don't recognise ferrets picture, perhaps mine is different but a good look will reveal. :thumb2

Edit --- actually yes I see that one

http://www.nissan4x4ownersclub.com/forum/showpost.php?p=277673&postcount=2

 

[Sweety]

Thanks chaps, I will check for these, don't recognise ferrets picture, perhaps mine is different but a good look will reveal. :thumb2

Edit --- actually yes I see that one

http://www.nissan4x4ownersclub.com/forum/showpost.php?p=277673&postcount=2

Yours shouldn't be mines younger than yours & I have those earth's on the inlet manifold next to the dip stick & crank sensor wiring plug

 

[AlexD333]

Yours shouldn't be mines younger than yours & I have those earth's on the inlet manifold next to the dip stick & crank sensor wiring plug

Defo got it, you can see it in the picture I linked :thumb2