Quote:
Originally Posted by jtallen123
Unless you got a resistor somewhere in the circuit a straight wire splice is not a problem. You only have to worry about current draw and the current output of the sensor, but usually you don't have to worry about that. You more have to worry about the type of output the sensor has a (varying voltage, digital, analog etc). But short answer is no, voltage doesn't just "split".
While I'm not an expert mechanic I am an electrical engineer who designs electrical systems for offroad machinary for a living, skid steers at the moment. (think those small bobcats)
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actually, it in fact DOES split. i have found that the MAP, ECT, and IAT sensors are affected by splicing the wire and splitting it to 2 ecus. I am currently finding ways to get a clean, fresh signal straight from the sensor instead of splicing it. I will certainly let you know when i find out.
I am running a dual ecu setup and currently working on a new R&D project for Hondata. I assume you already have Hondata Kpro on the RSX ecu? Once you have the electrical things able to turn on, you can check the KManager software and see what sensors are needed.
so at this point, your FIt ecu is controlling: multiplex, a/c...and what else?
RSX Kpro ecu should be controlling everything else, including OBD2. Although you can leave the "K-Line" from the Fit ecu tapped with the RSX's K-line to be able to diagnose both ecus. but when u go in for inspection sometime in the future, cut the K-Line from the Fit ecu. (K-line is the OBD2 comm line)