Im not sure if this goes here...

Hi everyone, I have ran into a problem and thought you guys could help. I am trying to get my stock USDM OBD2A P72 ECU to pass inspection, but I cannot get my scan tool to connect. All I get is a “linking error” when I connect the scan tool to the cars port and turn the key to the ON position. Before the engine swap, the scan tool worked perfectly. I am using a Memoscan scan tool. I believe the problem lies with the new engine wire harness. I have tried the paper clip method and it looks like I am getting code 20. (I believe this is the code for the ELD). I need to be sure of all of my CEL codes.

I have a 96 civic DX, 5 speed, with an OBD2A B18C JDM GSR. I am running a Chase Bays CM1 harness. The new harness (pictured) has 2 flying lead wires that were not connected to anything when I got the harness. 1 wires is Black/Red and wire 2 is Purple/Black. I am also using a USDM OBD2A P72 ECU. The number on the ECU is 37820-P72-A04.

I called Chase Bays and was not very impressed. A guy finally answered and said that wire 1 (Black/Red) was for the ELD (electric load detector) and wire 2 (Purple/Black) was for the scan tool. After researching, I used a quick splice to connect wire 1 to plug D16. I spliced wire 2 to plug C7.

Do the flying lead wires (Wire 1 and Wire 2) go here? Could this be causing my scan tool to not function? Please help!!

Heres my ECU.



Here is one of the flying leads (Wire 2) (Purple/Black) spliced to a wire going to D16.


Here is the other flying lead (Wire 1) (Black/Red) spliced to a wire going to C7.


Here are the flying leads from the Chase harness spliced into the plugs that go into the ECU.


Here is the scan tool Im using

 

You need to connect them to the stock ecu plugs like you did in the pics. I think the purple/black wire goes to c8.

 

Thanks for the quick reply. I just tried C8 and I still got a linking error. I'll have to try again in the morning. Maybe I didn't get a good connection.

 

I ran into a slight problem. I'll try to reconnect the wire to C8 and see what happens. I'll post results when I redo it. Thanks again