Like title says, Ive searched, but ive come up two things...

"jump D4 to a ground and see the light flash" - What wires D4? which connector does this mean? ON the ecu? BY the ecu?

also, people say something about grounding a wire on the pass. side shock tower under the hood- which wires are theses?

My car is a '97 integra with p72 w/ a OBD2a-OBD1 jumper to a OBD1 p72 ecu.
I get a code right at startup and cant figure out how to check it....


EDIT: Heres what Im dealing with:

2ecus, both p72, OBD1 on top, OBD2a on bottom:


Heres what under teh kick panal looks like, and the jumper harness. (The extra wires are for vtec - it used to be an LS)


And heres the whole thing:


Which wires? How can I check a code?


[Heres the whole problem... When I run OBD2a - its fine for around a day, then I get 2 codes:
P0420 - Catalyst manfuntion
P0453 - EVAP system pressure high

SO.... i figure I switch to OBD1 b/c obd1 isn't as picky about that kinda emmision crap. I buy the harness- as far as i can tell its wired right - and I turn on teh car and get a code right away - Im trying to figure out what code it's throwin... ]


EDIT: Okay found a nice link - anserewed my oun question. Well anyway hope this link helps other people:
http://technet.ff-squad.com/how-to/celcheck/

EDIT #2: By the way, the code I was throwing when swtiching from ODB2-1 was b/c the IAB valve on the GSR manifold is wired differntly from OBD2 to OBD1. OBD2 requires a negavitve ground, while OBD1 rquires a 12v source. I think thats right, if that dosent work, reverse it
Modified by Tonyl507 at 9:38 AM 10/17/2006


Modified by Tonyl507 at 10:44 AM 10/17/2006


Modified by Tonyl507 at 10:11 AM 11/2/2006

 

BUMP, this should be up top, nice link... very detailed. Thanks again!... BUMP~!!!!!1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kangolbrand &raquo;</TD></TR><TR><TD CLASS="quote">BUMP, this should be up top, nice link... very detailed. Thanks again!... BUMP~!!!!!1</TD></TR></TABLE>

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