nissan almera tino cut out during idle after MOT

[andybaz]

Hi all, we had a ALMERA TINO yesterday for MOT, test followed by emissions, while the ticket was being writte out, the car cut out and would not start, pluged the pro in, no codes, removed plugs - no spark - now we area toyota agent and have NO NISSAN material/data to work with, so its trial and error investigation, took a screen shot of ign on then cranking, the DATA list offered by S.O seems a bit poor - lack of sensors ? .

So, spotted a fuse board - 15a COIL fuse popped, ran out of 15's as usual, fitted a 25a, she started straight away then cut out - fuse blown !.
Fitted a bulb across the fuse terminals and the circuit appears to be constant feed.
Now i fitted a 30a fuse - ign was on for about 15secs not cranking then the fuse BLOW again.

Apart from there being poor data material on the solus pro . No crank sensor or cam readings etc.

So obvioulsy the owner is unwilling to pay to sublet the car to a deadicated auto specialist, so clutching at straws for idea's, as the car was running smoothly, no misfire, no electrical loads, simply cut out on tick over, if it blows a 30a fuse with ign on an no cranking, im guessing that may be a circuit has gone down in the ENGINE ecu ?.

Any one come across this sympton before.

[Orevin]

...
So, spotted a fuse board - 15a COIL fuse popped, ran out of 15's as usual, fitted a 25a, she started straight away then cut out - fuse blown !.
Fitted a bulb across the fuse terminals and the circuit appears to be constant feed.
Now i fitted a 30a fuse - ign was on for about 15secs not cranking then the fuse BLOW again.

Why not trying an even larger fuse?

... im guessing that may be a circuit has gone down in the ENGINE ecu ?.
...

Yeah, by now it's possible... but it wouldn't cause the fuse to blow. Your post lacks info like MY, engine size or VIN. But here is a circuit schematic that might help tackling the problem:

12-21-2011 9-38-11 PM.jpg

HTH.

[andybaz]

Hi cheers for the input, the reason for different fuses was we usaed the last one in stores , not to worry.

I then placed a bulb across the fuse to use up the power, so if something was moved and the bulb went out i knew i was working in the right direction.

I am lead to believe this is a 1.8 vin: VSKTBAV10U0008412.

Pretty sure not a COIL problem, as with all 4 coils unpluged, the light stays on (fuse pops).

This was a fill in job from the service desk while i waited for my next job, and now the car sits on the back wall an i can get to it between jobs, dont know how long for though.

[andybaz]

Done some basic testing, the coil sticks are 3 wire plugs, symbols (+) (G) (IB)
On (+) wire im getting .19 - .20v while cranking
On (G) im getting on average 1.1 - 1.2 ohms

Not sure how to test the signal wire from the ecu, (IB) wire, these readings where taken before i found the blown coil fuse. , idealy would love to know if the fuse should be live all the time etc or only when cranking.

[Orevin]

...
idealy would love to know if the fuse should be live all the time etc or only when cranking.

Look at the diagram again:

12-21-2011 9-38-11 PM.jpg


If the light bulb is still lit up after you disconnect all the loads on the circuit (don't forget the valve timing solenoid), check the harness for a short to ground. From what I see, there is no way the ECU can blow the fuse KOEO. I suppose a bad ECU relay is possible, don't forget to check.

[andybaz]

Cheers Orevin, had a drink of adult pop last night, made all the lines look the same , well christmass is round the corner . Will have a go on my diner break and see if thats the problem, if so approach the boss and see what recognition i get ???

Cheers for your assistance, if it was a toyota i'b fine , but the boss will insist on diagnostics on non toyota gear, not sure how we spose to work out wiring diagrams or locate etc (ford/vauxhall/honda etc etc), live an learn i spose

Will report back as and when with what ever happens.

Cheers again, have a good christmass - THANK YOU

[andybaz]

Update: I cant take credit for this 1 but will update, thank you orevin for the diagram for your time and efforts, the COIL 15a fuse kept blowing due to a deffective I.A.C.V .

Disconnect this unit and the cars idles and runs, not roadtested down the road though, as this item appears to be deffective, advising replacement 1st before continuing. Im guessing, if it was to be driven down the road with this item disconnected then a code may be stored. We have no data/test info or wiring diagrams relevant to this vehicle.

There were no ecu codes stored in the ecu

[andybaz]

WEll, i thought i would take the plunge, purchased a NISSAN almera tino V10 cd from these electronic download systems, yes it cover EOBD coverage, just scanned through it, NOT compatible to uk market cars.

I made a note of the failed item along with wiring multiplug and colours and no joy - NOT compatible, maybe if you are working on a Almera Tino coming in from outside the UK, these may be of use.

So no data or wiring info available unless autodata has it, or off to the UK dealer we go.