EE_Chris

People buying JDM swaps that are "OBD2" seem to expect that this swap will pass emmisions in an USDM OBD2 chassis while trying to use the JDM ECU.

The short answer to "Will I pass with an OBD2 JDM ECU" is NO. Trying to use my scantool on a supposed OBD2 JDM ECU yeilded nothing but communication errors. And it really pissed off this member because he expected that when emmisions came due, he could roll into the station, get hooked up to the scanning machine and be done with it.....but this just ain't gonna happen.

So this is a FYI to the people looking to use JDM ECU's in an USDM OBD2 chassis and expect to pass emmisions....it ain't gonna happen.

crvtt96

GOOD POST but not what I was hoping to here ! I'm an auto tech so I have the tools, bought the books, but don't know what to use for an ECU ... have '92 Civic VX with JDM '97 B18C & JDM OBD2 ECU w/ecu adaptor... get CEL on at times but no code(s) . I appretiate any info. Thanx

Turbogixxer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crvtt96 &raquo;</TD></TR><TR><TD CLASS="quote">GOOD POST but not what I was hoping to here ! I'm an auto tech so I have the tools, bought the books, but don't know what to use for an ECU ... have '92 Civic VX with JDM '97 B18C & JDM OBD2 ECU w/ecu adaptor... get CEL on at times but no code(s) . I appretiate any info. Thanx</TD></TR></TABLE>


If you are trying to get the codes by using the scanner, it will not work. Just jump the connector. I am trying to get the info it see if you can switch the pins for this and OBD2 JDM ecu problem.

I posted in the thread in tech. Good info.

crvtt96

Should I start looking into an OBD1 ECU / or Hondata / or AEM ? I can't get any code out using jumper and CEL.

Turbogixxer

How are your trying to read the codes?

crvtt96

I jump the test connector and turn key to on and look at the CEL, OK

egsleepercivic

just get a P28 or P30 if you want a knock sensor and have it chipped for ITR maps

** forgot about the emissions part, if you didn't have to worry about emissions^**


Modified by egsleepercivic at 9:34 PM 6/9/2004

PHiZ

Well OBD2 was precipitated by USDM emissions requirments. I suspect that JDM cars migrated to OBD2 simply to ease manufacturing costs. AS in they use one homogenous connector.

It's interesting that the JDM cars wouldn't have this functionality enabled, In that it gives dealerships an additional diagnostic tool to service cars. It seems honda of japan would actually have to engineer a whole other ecu/software combo to achieve this, which really seems like shooting themselves in the foot both financially and strategically.

I trust EE Chris' opinion, but I'd like to see more info on this. I mean, what scantools do dealerships use in JDM-land... Ya'know?

-PHiZ

crvtt96

Yea!!! I'd like to know!!!!

crvtt96

Thanks again for this info, I'd like your opinion, for this '92 civic w/ '97 JDM GSR , should I look for a P72 ECU ??