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Neil Clayton

Confirm understanding of ECU pinouts (serial)

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I've Link G4 Plugin.

The manual says that there's some RS232 pinouts on the ECU connector. I'd like to confirm that this is indeed the case (primarily because I don't seem to be able to talk to it).

Is it expected that assuming I have my baud rate setup correctly, that I'd be able to power on the ECU - and send it a 'W' command to do a status check?   I'd expect to be able to send W and see 'something' on my telnet session (I'm connecting via a Ethernet->Serial converter that we've checked is working OK).

The ECU itself is in the car, working, configured - and I can talk to it fine over the USB link using the PCLink s/w.

Is there anything I have to configure apart from Baud, bits, parity on the ECU before it'll talk to me over serial?

Thanks in advance,


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Hi Neil,

Because your ECU is a plug-in you will probably need to change the plug setup. If you unplug the tuning cable from the top-board in your ECU and plug it into the plug on the bottom board (Normally labelled RS232/CAN) you should hopefully be ok.



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