Bmw x5 e70 4.8i dme no communication

[deboelduro]

Hello members. I own a 2009 x5 4.8i. I been having some electrical issues the last couple weeks. Started with code p0348 cam signal circuit high then after cleaning the code a few days later I get p0336 crank sensor signal and this weekend the vehicle went from long cranks and erratic idle to no communication with dme. FUSES 35,36,42,43 don’t have power when ignition is on ? Any tips? So far I’ve replaced the dme main relays including the 30G in the back and no changes.

[80stech]

It might be a good idea to check your grounds, just as important as fuses. History, such a how long you had the car and other work done might help. What scan tool?

[deboelduro]

The scan tool is a foxwell nt710 with bmw software. I’ve checked grounds and added grounds also. Last year I installed a subwoofer and did the big 3 grounds. I thought that terminal 30 powered fuses 35,36,42,43 ?
Had the vehicle 4 yrs now. All 4 cam sensors and new bmw oem crank sensor installed.

[andrewwynn]

Have you checked the connections on the DME? Wiring loom? The quantity of problem suggests wiring issue

Terminal 30 i think is the always on ckt. There's a terminal block under the trunk floor with a few high power fuses if there's no t30 power I'd look there first.

[deboelduro]

Yes I’ve check all the connections at the dme. I even pull it out and opened it to inspect. I didn’t see anything that stood out. Ive jiggled the wires at the dme hoping to see a change or hear anything clicking but nothing what powers fuses 35,36,42,43 ? Whatever powers these is the culprit

[80stech]

It could be a connection in the trunk somewhere but you should probably get a wiring diagram at this point.

[deboelduro]

I’m going to try and check every module and sensor this weekend and if I can get to the bottom of it is definitely going to a shop .