FMU Compass Calibration **fixed**

[RandyBobandy]

Check to make sure the pin for the speed signal wire in the ecu plug wasn’t dislodged slightly, just push it in and see if you get a speed reading again

 

[Devbot]

At this point, it is pretty clear that the splice isn't the problem, it is what is ATTACHED to the splice.

-Charlie

I assume by that you mean the FMU is the problem, which i get it was starting to look like - but then how am I still throwing a code when the wire is completely disconnected if that's the case? P0500 came up again on my way home (diagnostics information below) and after I cleared it I took the liberty of snipping the wire from the FMU plug altogether, to completely eliminate it as a variable even though it was already disconnected. Within 30 minutes (same amount of time usually) my CEL came back with P0500 again. That makes it pretty hard to say the FMU is the issue, I'd think
So if the wire isn't connected to anything, and no CEL was thrown before and between splices... My thought would be it's creating an impedance which is messing with the ECU or something
Edit: ignore the wacky fuel trims, just pulled my EFI fuse yesterday or day before

 

[Devbot]

Well, that could be an issue...

 

[Devbot]

Yep, that short was my problem. Replaced the wire and did it a little more carefully and now the FMU is fully operational - green bars scroll, compass calibrated and moves now, all is good so long as a code doesn't trip :thumb:

 

[phattyduck]

Yep, that short was my problem. Replaced the wire and did it a little more carefully and now the FMU is fully operational - green bars scroll, compass calibrated and moves now, all is good so long as a code doesn't trip :thumb:

And now you know why I said FMU or wiring.

-Charlie