Technical No power at EOBD socket for Examiner?

[Dax]

I finally have got my Fiat Examiner up and running again to try and sort out the constant problem of my Stilo Abarth Selespeed's intermittent non-starting.

At the moment,it will turn over, but will not start. It wont hold the time or date when set and nearly every warning light is coming on and there is no power to the fuel pump!!

I plug the Examiner in, I set it to read the CAN bus, it goes to read what is on the CAN bus, then it comes back with a message that, "No power supply 16 way Connector Via CAN/EOBD Cable (pin 4 ground pin 16 +12v)".

If this is the case, would no power at this point effect the main body computer, hence all the warning lights, not holding the time/date etc.? And, what would cause this?

 

[Deckchair5]

As it turns over but won't start and you had intermittent non starting I take you've checked the crank sensor?

I'd check directly for 12v at the 16 pin obd connector with a multimeter to see if it's the examiner playing about or its plug

 

[john55]

If this is the case, would no power at this point effect the main body computer, hence all the warning lights, not holding the time/date etc.? And, what would cause this?

Yes. The instrument cluster turns all the warning lights on at power up then when it receives a command from the various modules in the car, it turns the light off. If the ABS, airbags, body computer etc are not there or not powered, the relevent light stays on.

Have you checked for blown fuses as it seems as though a lot of things are not getting power.

 

[Dax]

As it turns over but won't start and you had intermittent non starting I take you've checked the crank sensor?

I'd check directly for 12v at the 16 pin obd connector with a multimeter to see if it's the examiner playing about or its plug

With regards to the crank sensor, I have replaced that along with the ignition ECU, throttle body, fuel pump etc. etc.

When it did start about a week ago, and I was driving it, I did get a warning come up constantly saying oil pressure sensor failure, but there was pressure showing on the dash display and oil in the engine to the correct level?

I will have to do as you say and check pin 16 to see if it is the Examiner/plug

 

[Deckchair5]

At the moment,it will turn over, but will not start. It wont hold the time or date when set and nearly every warning light is coming on and there is no power to the fuel pump!!

Is it turning over strongly? Losing the time and date is often a power supply problem, ie battery or poor connections. I would check charging voltages and main power supply earths. Examiner spotting that there's not 12v minimum between pin 16 and earth is another clue

 

[Greggers]

Dax, if it's any help, I'm just over the river next to the Thames Barrier and would be more than happy to pop over and offer myself and my Stilo for any tests that would help.

 

[NumanR]

!2 volt supply for diagnostic socket is from fuse 39 in fusebox mounted to body computer and earth is connected to earth through body computer.

 

[Dax]

[/QUOTE]Is it turning over strongly? Losing the time and date is often a power supply problem, ie battery or poor connections. I would check charging voltages and main power supply earths. Examiner spotting that there's not 12v minimum between pin 16 and earth is another clue[/QUOTE]

I have the battery on constant trickle charge, so it turns over very well. Having this constantly on trickle charge, would not cause any problems, would it?

 

[Deckchair5]

Always best to have the battery disconnected from the car when charging it then there's no risk of over voltage etc. Some trickle chargers are quite nasty

Why do you need to trickle charge? Not using car very often or is it losing charge when left for short periods?

Have you found 12v at pin 16 of OBD connector?

A poor contact at the battery to engine earth would cause a lot of your problems so I'd do a voltage drop test on that. See Stilo Guides for how to do

 

[12[X]]

deck is spot on.. no or poor ground at ECU/engine would cause this (that or a positive wire rubbing on the chassis somewhere.. i.e. a short.. as time/date cannot be stored = no power to do so.. these are 2 very good reasons..as to why)

my apologies if i have not mentioned/realised this in your original post

 

[volxstu]

Def sounds like a bad connection or short somewhere. Am i right in thinking that you have had this engine out to work on it or is that somebody else. If it is you then i would almost certainly say you have damaged a cable or pulled a wire loose from its connector.

If i get a problem like this with ICE then its a case of tracking through everything but that is considerably more difficult with all the cables and wires of OE looms.

I hope somebody can help whittle it down for you a bit.

 

[Dax]

Always best to have the battery disconnected from the car when charging it then there's no risk of over voltage etc. Some trickle chargers are quite nasty

Why do you need to trickle charge? Not using car very often or is it losing charge when left for short periods?

Have you found 12v at pin 16 of OBD connector?

A poor contact at the battery to engine earth would cause a lot of your problems so I'd do a voltage drop test on that. See Stilo Guides for how to do

Thought I would have another go at the car today, started up straight away and drove like a dream!! Tried the examiner again, still getting the same prompt about the power at the plug, so tried it on another vehicle, and I get the same. So I assume the problem lies with the examiner? Checked fuse 39 on the main body computer, and it was OK. I also get a prompt when trying to read the control unit, saying there is "NBC", which I assume means, No Body Computer? However, I have used the sef diagnostics menu item on the examiner for the VCI board, and all tests past!

Whilst driving, every warning light comes on still, and the clock flashes. Although the clock does not flash when the engine is turned off but ignition on?

I am really getting fed-up with this intermittent problem. It’s been going on for nearly two years, it’s been into Fiats, and they just wanted to charge a fortune to keep replacing parts until the problem was found.

I have had this car from new (2002), it’s in mint condition and has only 35k on the clock, but I might just have to scrap it as these are not worth much when they are going, let alone having a fault!

 

[Davren]

I also get a prompt when trying to read the control unit, saying there is "NBC", which I assume means, No Body Computer?

Can't help with your other problems, but NBC is the code for the Body Computer Node. Node Body Computer. I doubt it means No Body Computer.

 

[yellowstilo]

a node is an electronic unit in a network.

 

[NumanR]

Which examiner are you using? The black one (examiner 1) The red one (examiner 2) The tablet one (either smart or smart hd) and what software version?

 

[Dax]

Which examiner are you using? The black one (examiner 1) The red one (examiner 2) The tablet one (either smart or smart hd) and what software version?

The black Fiat Examiner 1 with release 5.1, it all worked before I fried the CPU, replaced this, reinstalled the software and eventually got it working again, or so I thought? I have got release 5.2, 5.4, 5.6, 6.2 and 6.4, but I have been told release 5.6 would be the latest I could put on this machine. However, when you get these releases, you get a floppy disc as well as you boot the machine from this, which I have only for the 5.1 release, as this is the one I got when I bought the machine. All the other releases I have got through other forums, but not the floppies!

 

[Deckchair5]

As it's obviously a CAN fault and it's already telling you which node is the one- Body Computer- I'd dive straight for the body computer earth C15B

Have you found out if you have 12v at the 16 pin connector yet?
Even more so, a no or poor earth connection would show up there too