Jumper J12

JoeJoe1 · Post by **JoeJoe1** » Tue May 24, 2005 7:52 pm

I received my ECU socketed from Hondata and jumper J12 does not appear to be cut, what is the purpose of cutting it? and would it work fine if it is not cut? because I read that it's just a suggestion. Thanks.

JoeJoe1 · Post by **JoeJoe1** » Sat Jun 04, 2005 7:56 pm

Anybody?

EGHATCH · Post by **EGHATCH** » Sun Jun 05, 2005 1:19 am

its ok if its uncut. i didn't cut mine...datalogging works fine. thought i think its recommended.

turbo_civic_si · Post by **turbo_civic_si** » Mon Jun 06, 2005 6:33 am

it lets the ecu know whether it is communicating half duplex or full duplex. when j12 is cut it switches into full duplex and allows faster communications.

JoeJoe1 · Post by **JoeJoe1** » Mon Jun 06, 2005 7:12 am

Oh ok, thanks for the info guys. I'll just go ahead and cut it then.

ak94gsr · Post by **ak94gsr** » Wed Jun 08, 2005 5:41 pm

what do u mean about faster communications?? between the labtop and ecu???

so cutting it does no harm?cause mine is not cut either

EGHATCH · Post by **EGHATCH** » Wed Jun 08, 2005 7:46 pm

will try it later...

i guess to doesnt have a downside when cutting j12.
it means you will be datalogging if FD. transmit and receive can be done simultaneously

CivicVTi · Post by **CivicVTi** » Thu Jun 09, 2005 9:18 am

The downside is that you cannot connect to the Honda dealers' diagnostic center with the connector under the dash. Communication is faster and you can record at a faster rate.

turbo_civic_si · Post by **turbo_civic_si** » Thu Jun 09, 2005 11:04 am

faster communications between the ecu and the hondata box, etc...

half-duplex = cb radio, one person at a time can talk.

full-duplex = telephone, cell phone, etc. both can talk at the same time.

DaX · Post by **DaX** » Fri Jun 10, 2005 5:33 am

Holy hell, is this actually technical talk on the Hondata forum?

Great info guys!

Twitch · Post by **Twitch** » Tue Jun 21, 2005 1:16 am

Can anybody confirm that after cutting the j12 Hondata still worked fine

turbo_civic_si · Post by **turbo_civic_si** » Tue Jun 21, 2005 10:03 am

i confirm it still works fine. mine is cut and has been cut on all the ecus i've soldered for hondata.

Twitch · Post by **Twitch** » Tue Jun 21, 2005 12:47 pm

turbo_civic_si wrote:i confirm it still works fine. mine is cut and has been cut on all the ecus i've soldered for hondata.

Thanks