In fact I found that if I am fast enough on the keyboard I can send the "10 03" and "27 03", without any problem, but if I am too slow, I have this "service not supported in active session" error. I guess the ECU put itself back in active mode instead of diag mode if no data is sent within a short timeframe.

Didier

Le lundi 30 septembre 2024 à 12 h 16 min 43 s HAE, didier@ernotte.com <didier@ernotte.com> a écrit :

Thanks, with the "re obdii tester" command I was able to keep the private session alive and send my data to get the battery cell info hidden in a internal routine of the ECU.

Didier

Le dimanche 29 septembre 2024 à 14 h 02 min 49 s HAE, Craig Leres via OvmsDev <ovmsdev@lists.openvehicles.com> a écrit :

On 9/29/24 00:50, Michael Balzer via OvmsDev wrote:
> you may need to send a periodic "tester present" signal after entering
> the diagnostic session via "10 03".

Interesting. In J1850, secondary id 0x03 (state of health/node alive)
is periodically sent by many modules.

Craig

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