I have a 1994 civic cx that I just swapped a 1994 b18c1 into. Im using the gsr engine harness and ecu. But im getting check engine codes 23 and 41 for the knock sensor and for the o2 sensor heater. Is this because the civics harness is not wired for this? And is the harness that goes from the engine harness connectors to the ecu the same harness that goes through out the whole dash? I have access to the whole gsr wiring harness but will it fit the civic? The previous owner butchered the civic harness so I would really like to change that out, but if I have to take the whole dash out I will have to rethink swapping it out.
Thanks for any help.

 

See this thread.

https://honda-tech.com/honda-civic-d...-vtec-2987229/

Specifically, these sections.

The thread is stickied for a reason.

 

Im wondering if the civic and integra ecu harness are interchangeable? Would I have to remove the dash to swap it out?

 

...You don't need to. Did you even bother reading the URL I gave you?

 

The gsr engine STOPS at each shock tower, which means there are probably some wires not ran all the way to the ecu.

 

the previous owner spliced into a bunch of the wires to run a vafc and its getting bad connections somewhere. . That is why I am curious if the integra and civic harnesses are interchangeable.

 

All you need to do is locate the wires ran to the o2 and the knock sensor and confirm they are not loose, check continuity back to the ecu to ensure you have a connection. Thats it. If you want to replace the the engine harness than swap an obd1 gsr in there.