Originally Posted by
breakneck
Quick question for you kind folks:
I'm currently investigating this issue as I get the P0410 code consistently. I pulled out the RCM, and it looked alright as far as the soldered connections go, but I still have my doubts about their integrity. I think I'm going to pull it out again and touch everything up, specifically the connections noted in this thread.
My question to you all is this: I'm also starting to get the BAS/ESP light more consistently. This had been a problem that had cropped up in the past, but ever since pulling the RCM out I seem to be getting it every other day or so.
Does the RCM have anything to do with the BAS/ESP light? Could bad connections on the RCM cause the BAS/ESP light in the same way it causes the secondary air injection pump issue? Is there any way at all that I can correlate these two things? I'd love to be able to knock two birds out with one stone here.
Thanks!
Short answer yes, RCM communicates with the PCM/Bcm via the can buse but, has also been known to be caused by a faulty brake light switch or a bad connection at the brake light switch which is mounted on the brake pedal arm under the dash. Other causes also but less common. Another common cause of a lot of the ailments of this cars electrical system is poor or bad ground connections, you should inspect disassemble clean with a wire brush reassemble with Dielectric grease all the ground connections under the hood including the one right at the secondary air injection pump, they may look clean but because they are dissimilar metals oftentimes they create a film of oxidation between them, when you add all of the connections together they create a lot of resistance that is not supposed to be there which in turn increases the Load on the electronic components which causes them to overheat and prematurely fail. We have several electronic engineers on this forum who can better guide you then me, they may chime in and offer some additional advice. Hope this helps