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OBD port location on CSR 260


Shortshift

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Err... feel a bit silly asking this but I can't find the OBD port on my 2005 CSR 260...  I've looked in all the obvious places and it isn't easily spotted; it certainly doesn't seem to be in the same location as on my 2012 S3 car.

Can anyone tell me where to look?  It's not the easiest or most comfortable of things twisting one's head upside down to see what lurks under the scuttle and dash areas.

James

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Found it!

It was, indeed, hidden away in a tight coil of wiring immediately above the steering column - not so different from Mark's car but rather more invisible.  It was so tightly bound I had to cut away three cable ties and wind back some harness tape to free it up - but I now have it 'free' and just about able to access it.

Job for the weekend (when it is a bit cooler) to connect up Easimap and see what's what. I'm particularly interested in the idle site mapping and TPS settings.

Thanks all for the input and advice.

James
 

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Well, Ian - spot on...

I connected up Easimap and nothing...  Sure, there are four wires going into the OBD socket under the dash but there is no CAN connection from the ECU (so no data flow to allow Easimap functionality). I know this because I opened up the 36-way connector at the MBE ECU and there are no pins or wires in socket holes 8 and 9 - the low and high CAN outputs.

Of course, SBD have a cable for this exact purpose but it costs a fair bit for what appears to be one female OBD socket on the end of a short cable that is terminated with two pins (one for each of locations 8 and 9). But - for the record - a few moments sleuthing confirmed that the ECU connector is a J2 type from Aptiv (formerly Delphi) and that you can buy pins for it (Delphi 12084912) for pennies. Ironically, the shipping cost is a bit more, but overall still cost effective.

So it may take a few more days before I can start looking into Easimap, but at least it won't have cost much to add a compatible, working OBD socket.

James

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Ah - good point!  I ordered six (at 40p each, or similar) with the shipping being £6!!  So I should have bought twenty or so, if I had been thinking.  But maybe your under-dash OBD connector will be wired and functinig for Easimap?  As said before - no two cars the same...

But yes, I need two pins for this job, would like to keep two for spares so I will have two that you can have, Mark.  Be aware, though, that Easimap doesn't allow you to change mapping (because Caterham's ECUs are encrypted) but you can see what is happening with TPS, idle sites, lambda functionality, various (accurate) temperatures and so on, all in real time.  A useful tool for diagnosing many problems and for setting up - particularly around idle and to make sure that full throttle means just that.

James 

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For the MBE Delphi connector I found it was essential to use the correct crimping tool to get a sound connection - a 0.5mm open barrel crimping die ("B" type connector) with either a stepped jaw to crimp the wire and insulation at the same time, or separate crimping dies for wire and insulation crimps. It is preferable to use a ratcheting crimper, if available, to ensure the pin isn't over or under crimped.

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Still expensive , I had to send a 27KG WC to Germany last month and it only cost £12.30 by DPD air freight-48 hour guaranteed delivery ( Parcel Hero ) 

I dropped a bit of a clanger and bought the wrong thing , was pleasantly surprised how cheap it was to send it back given the size and weight .

PS i can confirm that Villeroy and Boch sanitaryware is much cheaper from German outlets than it is in the UK . 

 

Now , back to OBD connectors ..........

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Well yes, I know what you're saying, Mark.  But I only needed two pins and buying six for just over £8 from this supplier in Germany worked out the cheapest (and possibly the fastest) way of getting them.

I think you'll find there's a separate section somewhere on here for your specialist subject, called SanChat *yuck*

James

 

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  • 2 weeks later...
  • Leadership Team

All done - eBay special female OBD connector (from China), two pins for the MBE/Delphi connector (from Germany), labour as necessary (from Warwickshire) and Easimap functionality is now in place via an additional underbonnet OBD port.


IMG_0984.thumb.jpeg.b9e2fb9ea22c364bfb69f7372d76a501.jpeg

Encouragingly, all looks good on a first  pass, including idle correctly set at Map Site 0.0.

James

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  • 2 weeks later...
  • Leadership Team

David

If you pull off the ECU multi-pin connector you will find (assuming your car is like mine) that Pins 8 and 9 are not connected.  These are the two pins that need to be tapped to provide the Easimap feed through the OBD connector. 

The approach I took was to purchase a couple of pins and a cheap OBD connector (with 30cm or so of cable attached) and to connect the appropriate two wires from the OBD cable (pins 6 and 14 in the OBD connector for CAN Hi and Lo respectively) to Pins 8 and 9 within the ECU connector.  The ECU pins for fitment to the car-side connector are Delphi 12084912 (female).

Hope that helps.

James

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