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Found pin out and looks like my button is correct-- if picture of pin out is from back of the plug----

On the wiring instructions for the ecu. The pins are numbered, there can be no ambiguity.
Do things in the order the instructions tell you.

https://www.dtafast.co.uk/download_file ... TA%20S.pdf

I have never seen this procedure list, it is a bit different from the one at the beginning of this thread. All that said I still get the failed to acknowledge as soon as I open the flasher. And maybe my old eyes but I see no numbers anywhere on connector or ecu plug.

Are we talking about the serial 15 pin plug at the back of ecu opposite the 2 wiring plug connection? I assumed so. And I have the S-80 wiring and can see no pin out for that rear plug??
On the diagram for the front plugs it clearly says what side of the plug you are looking at for wire number reference.

I'm not following you ?

What do you mean you've never seen this procedure list ?

I linked to the instructions on the DTA website for flashing.

And the S80 wiring diagram as stated and as I posted an image from it...tells you what wiring pins on the connector. It would be impossible to get it wrong ?
Of course yes it is the ecu comms connector.

And yes, the d-sub connectors used are always numbered...but yes, they're small !

Numbers can be seen at the wire terminals here



Again, there is no ambiguity here.

As Stevie says the flash switch goes on pins 8 and 13 on the ecu end of the lead, unfortunately he posseted a picture of the other end (female) connector, for clarity the switch goes on the 15 way male (ecu end) connector.

Rob Stevens wrote:As Stevie says the flash switch goes on pins 8 and 13 on the ecu end of the lead, unfortunately he posseted a picture of the other end (female) connector, for clarity the switch goes on the 15 way male (ecu end) connector.

The picture I posted is to show the pins are always numbered.

Again, there is no ambiguity...connect to the relevant numbers.

Hi
I have also the same problem. Monitor always red at St10 flashing software.
I have done it with usb serial Win10 and Industrial Laptop with serial port and win XP.
Always the same failure. What should I try?