ECU information required

[mister munkey]

I think it is/was an M reg. IIRC.

[widdowson2008]

That looks like half an ECU. There is a position for a 41-pin connector along the back edge that is clearly designed to connect to a second PCB. The processor number looks genuine, I just had a look on Google and it would seem to be a member of NECs 78F family. I'm not familiar with the NEC processors so I need to read up on them. From what year is this ECU?
Cheers
James

jaylee says '95

[jaylee]

I think it is/was an M reg. IIRC.

You sure dude? Not that it really matters to me, i got a tidy bargain replacement! The reply was N.. I asked if an N reg drivers tail light with an orange indicator was going spare cuz i didn't know if he had a new shape or the Freda clear??

I hope he don't mind my quoting...? "it is the 95 with orange" could be an M...?

[ebygum32]

Just to clarify it's an................

N Reg '95 green with orange tail light TinTop model

Hope this helps

[jaylee]

Cheers fer clearing that up Chris!


.. I just remembered... I haven't fitted yer old number plates yet!

[Rhinoman]

Oh dear, if its for a green one then thats no use at all, lol.

I think that the part number above may be wrong, are you sure that its not D78CP18(A)? That would be an NEC uPD78CP18(A) which looks correct, I can't find any reference to a 19 version. Theres a couple of Bongo ECUs on ebay at the moment, if I can pick one up cheap then I'll see if I can read it, the 41-pin 'connector' brings all the necessary lines out but chances are that the protection bit is set.

[Rhinoman]

Does it look like this one?

[widdowson2008]

Similar but slightly different numbers


Also chip number is D78CP 18GF (A) and NOT D78CP 19GF (A) as previously stated.

[Rhinoman]

Probably close enough then.
I had a quick look through the datasheet, there is no obvious reference to a security bit so you should be able to hook the ECU straight up to an EPROM programmer, select 27C256 and read the memory straight out of it. If that is the case then it would be the easiest ECU that I've ever hacked. I already have a disassembler for the NEC 78K series too, that should work with this processor.

[ebygum32]

Thats just what i was thinking about doing

[Rhinoman]

Here is the datasheet:

http://www.rhinopower.org/ECUs/Bongo/do ... 18A_ds.pdf

[widdowson2008]

Probably close enough then.
I had a quick look through the datasheet, there is no obvious reference to a security bit so you should be able to hook the ECU straight up to an EPROM programmer, select 27C256 and read the memory straight out of it. If that is the case then it would be the easiest ECU that I've ever hacked. I already have a disassembler for the NEC 78K series too, that should work with this processor.

SCORE almost.
I knew (or believed) it possible - just need to find someone with the knowhow.
Incidentally, I don't know wether you saw my edit to an earlier post - chip number is D78CP 18GF (A) and NOT D78CP 19GF (A) as previously stated.

Off to look at the datasheet (not that it will make too much sense to me..............................YET

[jaylee]

Are you suggesting you guys know how to read diagnostics & or tweak the ECU??

[widdowson2008]

Are you suggesting you guys know how to read diagnostics & or tweak the ECU??

OK, had a look at the datasheet. As I suspected, it makes about as much sense as Gordon Brown.
Question to rhinoman: If you are able to rip the memory, will it be in ladder logic format? (this sounds possible because the ECU is basically, from my simple viewpoint, just a glorified input/output device.)
If the answer is yes, then I have a chance of making sense of it. It will tell us precisely how the ECU works and put to rest a lot of the cooling system theories.

And the answer to your first query jaylee, is yes, providing rhinoman comes up with the goods (no pressure rhinoman)
As for being able to tweak the ECU? very likely not......................but we are working on it. One step at a time.

[dandywarhol]

You'll know a HUGE amount more of what can be done with hacking ECUs than I can even sniff at rhinoman but I don't imagine there's much can be benefited from hacking a bongo one as far as engine tuning - the pump is purely mechanical BUT - post '99 diesels have a partially electronic fly by wire fuel pump which could be right up your street

Have a look here...............

http://www.lushprojects.com/bongopartsm ... o=.html#10

http://www.lushprojects.com/bongopartsm ... mgno=.html

Good to have you onboard - hope you stick around for a while............