Printable View
Hi all..
I recently installed an obd2a harness for a friend's civic em1 (obd2b)..
the thing is.. the obd2a engine harness has 3 plugs that fit directly into the ECU...
whilst the obd2b engine harness had 2 plugs that went into the ECU and a 3rd from plug is from interior harness..
deliema is now i have 2 plugs that are exactly the same that plugs into the ecu on the same socket , b/c im using an obd2a engine harness and obd2b interior harness....
does thisn sound right?
im a bit confused
but I think you got the wrong harness
my understanding is
OBDIIa uses connector A, B, D no C connector
OBDIIb uses connector A, B, C, and no D
when looking at the ECU connectors from left to right
PK2 ECU only has two connectors A and B
its OBDII but not a or b
yeah ecu man.. your correct..
My obd2a (96-98)civic vtir engine harness comes with A,B,D plugs
but my ORIGINAL obd2b (99) civic vtir engine harness only comes with B and C (A is from the inside of the car)
since im using the obd2a in the obd2b vehciel.... i now have 2 "A" connectors..what i do?:( current car has no fuel pressure....
Quote:
Originally Posted by ECU-MAN
still a bit confued
but this is what I got so far
you have a EM1 which is OBDIIb
you have a OBDIIb to OBDIIa convertion harness
you have a ?DM P30 OBDIIa B16A?
your EM1 will have 3 ecu connectors A B and a Blue C
your harness should have the 4 connectors ( 1 big molded one ) that will accept these three EM1 connectors. all in a row A,B,C but no D
then the other end of your harness will have a OBDII A, B, and D connector.
you plug the harness into the P30 OBDIIa ECU , you plug the A, B, D ( the C is blank with no pins. )
if the above is not how it works for you then you have the wrong harness.
if you have 2 A connectors make sure you plug all the EM1's ECU connectors into the OBDIIb to OBDIIa harness, then the harnness 3 connectors in the ECU.
if you OBDIIa ECU is JDM you will be fine. IF its AUDM or USDM it will have an internal immobilser and will not start the car.
BTW in my above post I thought you had a CXi. you wont have a PK2 ecu with 2 ECU connectors.
take a picture !
CorrectQuote:
Originally Posted by ECU-MAN
nope.. i got a complete obd2a engine harness not conversion harnessQuote:
Originally Posted by ECU-MAN
Running PFC - obd2a, oriingally from an integraQuote:
Originally Posted by ECU-MAN
I have 2 A connectors.. 1 from engine harness (not a conversion harnesss).and one from inside the cabin.. dont know where thats from..
ILL POST PICs tonite.. thanks for you help so far.....
Yeah doesn't sound right bro. There should only be one interia plug, and it doesn't look anything like "A" plug.
thats what i was thinking,.. there is a green interiro plug ... but then there is another "A" connector plug.. WTF...Quote:
Originally Posted by barefootbonzai
Ill get pics later
cool just saw your other post,
you got it running
your post above explains alot more about what your doing :)
thanks for your help ecu man..:thumbsup:Quote:
Originally Posted by ECU-MAN