You are currently viewing our forum as a guest, which gives you limited access
to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join RX8Club.com today!
Ok guys I usually spend a lot of time doing my own self diagnosing issues but this one baffles me. I've done some searching and have found threads with these various codes but no one seems to have posted what their solution was. Ok so here is whats going down and if anyone can point me in the right direction it would be greatly appreciated.
Ok some starter info, 04 GT roughly 55k miles, various mods, car runs great minus the oil leak from the oil pan and OMP that I haven't gotten around to fixing yet. Leak doesn't appear to be coming from front seal, will know for sure when I reseal the OMP and oil pan later next week.
I noticed a few weeks ago driving to work that sometime during my drive the TCS/DSC indicator light came on and stayed on doing just my usual daily driving to work. Get to work, turn the car off, get out of work turn the car on light is off so I'm thinking ok, fluke incident no big deal. The car drove like normal.
Now I've noticed it happen a couple more times and finally tonight I realized that this wasn't going to be an isolated incident. Once again it is just the light that comes on, no ABS light, not the DSC off light, just the TCS/DSC light. Car drove like normal, no loss of power to the wheels. It didn't come on until I was almost home. So I grabbed my AP and tried to pull some codes and this is what I've got:
PCM: U0073,
IC: U0019, (what system is this?)
EPS: U1900,
RKE: U1900 (what system is this?)
Searching didn't provide much info, workshop manual points me toward the multiplex communication system. Going through the flow chart it gets me to narrow down CAN system malfunction location, which is of no help to me.
Once again, it doesn't feel like the car is effected in any way, the traction control might not work, not sure didn't try to force it to kick on. I'm sure when I go to drive it tomorrow it will be off again and might not come back on so it is a intermittent issue.
Anyone else run into this issue, dirty/bad electrical harness somewhere? I do live on a dirt road but it's a short dirt road and most of my driving is on pavement. Mechanical probs don't scare me, pulling an engine doesn't scare me. Electrical issues on the other hand do scare me, I have trouble grasping what I can't see, I can't visually see electrical currents, I've even read through HPBooks Custom auto wiring and electrical and I still just don't have a good grasp on electrical systems.
Any tips, help, flames would be welcome.
This ad is not displayed to registered and logged-in members. Register your free account today and become a member on RX8Club.com!
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
Last edited by redline86; 03-05-2012 at 10:35 PM.
Reason: spelling
Okay so I reset my codes before going to work today, now I have a P0000 code and none of the others have come back yet. I've searched and the P0000 code isn't even listed in the DTC code list WTF?
Frustrated, I would like to figure out what is going on before it becomes a constant problems.
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
I have an accessport, so does that basically just point to a communication error in the DSC system with nothing more specific? It sort of sucks that the problem comes and goes because without it staying on I have no idea if any trouble shooting things I try will actually fix the problem.
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
Wait a second, doesn't a can bus communication error have to do with the OBD port and the pcm? So how would that effect my DSC or is it tied into the same system? Like I said electrical systems confuse me, it might help to add that I did have the connections on my OBD port repaired because my accessport was having a hard time staying connected but since then I've had no issues, my accessport is always connected when I drive.
Note: Since having the connections repaired I no longer unplug my accessport cable from the OBD port, I rerouted it so my accessport cable stays connected and my accessport mounts on one of my center air vents via phone clip.
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
If you have no functional problems....reset the ECU and ignore them
Will do, it just sort of freaks me out when my traction control light comes on and I'm not driving like a bat out of hell. Mabe I'm worrying for nothing, I do tend to do that, she is my baby after all.
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
I would do some connection maintenance with a can of contact cleaner......I would pull the plug for the ABS pump...and do the ecu connections as well....As well as check the grounds in the engine compartment
I would do some connection maintenance with a can of contact cleaner......I would pull the plug for the ABS pump...and do the ecu connections as well....As well as check the grounds in the engine compartment
Will do and thanks for the help, I have four days off in a row comming up and was planning on fixing my oil leak, removing my air pump, and now I'll add electrical harness cleaning to my list.
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
It means your pcm is not commicating with the said modules correctly, i would check the wiring and see if there are any shorts on it. But that will be a pretty painful thing to test ...
All of those stuff can be found at the passenger side of the car(right side)
__________________
Feel free to ask every single little thing on this forum. a lot of cool dudes will answer your questions accordingly
Check the connectors by the wheel that goes to the front abs sensors. I had one of them came loose on me once and it triggered everything including the dsc ligths and stuff. Clean and replug, never happen again
And an intermediate short on the abs/wheel sensor will trigger dsc malfunctional light, u might want to check the sensor wiring with an multimeter, just connect both pins and move the wires around, if the numbers jump or beeps then u know whats wrong
__________________
Feel free to ask every single little thing on this forum. a lot of cool dudes will answer your questions accordingly
It means your pcm is not commicating with the said modules correctly, i would check the wiring and see if there are any shorts on it. But that will be a pretty painful thing to test ...
All of those stuff can be found at the passenger side of the car(right side)
Keyless entry system, hmm thats weird, never had a problem with it at all. Needle in a hay stack more or less, guess I should start from the ECU and work in? Am I mistaken or is the ECU the same thing as the PCM? I'm wondering if mabe some of those codes had been there from my OBD port issues and I just never checked to clear them.
Quote:
Originally Posted by nycgps
Oh, i just remember something.
Check the connectors by the wheel that goes to the front abs sensors. I had one of them came loose on me once and it triggered everything including the dsc ligths and stuff. Clean and replug, never happen again
And an intermediate short on the abs/wheel sensor will trigger dsc malfunctional light, u might want to check the sensor wiring with an multimeter, just connect both pins and move the wires around, if the numbers jump or beeps then u know whats wrong
I know exactly what connectors you are refering too. Looks like I will finally have to chance to use my super nice simpson milliammeter that my father in law gave me.
Oh well, at least it gives me something to do while I'm waiting for silicone to dry.
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
Update: I cleaned the wheel sensors as well as most every electrical harness I could get my hands on and no more electrical issues. I pulled appart the wheel sensors and they where full of sand. I love easy fixes
__________________
2004 Velocity Red Ludicrous Speed GT driven by the Stig's father’s brother’s nephew’s cousin’s former roommate.
a lot of cool dudes will answer your questions accordingly 
Linear Mode
