Come on, be a man, I swapped my exhaust back pressure sensor and it was -26C out this morning :D

The diagram I get it slightly different and actually shows that although on different pins, the +ve is actually common to each bank: Terminal 15 is the power supply while Terminal 31 is the ground (you see those as the termination of each side of the diagram).

The attachment shows that the circuitry for the +ve (which terminates in Terminal 15 is common to each bank) while the -ve (which terminates in Terminal 31 is independent to each cylinder).

May not help directly, but should clarify as to why the same event (corrosion) could lead to different codes that are either injector specific (if on the -ve) or bank specific (if on the +ve).

Actually the diagram you posted is making more sense than the one i got it from ISTA because your's showing separate 2 banks.Did you get it from rheingold as well?

No, I actually look them up here -> BMW Online Wiring Diagram System (WDS) by BMW-Planet.com It needs Java and MS Explorer... A bit clunky the first time you open it since you need to set the proper security in the Java Console, but after that is much quicker than loading Rheingold.

Thanks! But wondering why they are different?:dunno:

"Fixed" it
 

I fixed it...fixed it real good.

After the injector replacement, the only issue was it wouldn't start but cranked normally.

I electrically checked every fuse and relay including the fuse pack next to the DDE, under the glove box, and back right side. No problems found.

I tried to start it again and it now won't crank. Idrive screen is dead. Dash lights up with DSC, ABS, 4x4, air bags, transmission failure messages. INPA comes back with 22 error codes from JBB, MRS, DDE, EMF, CAS, KOMBI, PDC, FRM, etc.

Likely safe to say all those modules are not damaged. A similar group of seemingly unrelated errors appears when my engine-to-chassis ground corroded away.

Looks like a battery issue but the battery is in great shape. It's been on a trickle charger since the injector episode started. Just to cross it off the list, I connected my fully charged roadside starter battery and tried to start it. No change.

Disconnected the battery/charger, shorted the vehicle +ve and -ve, waited a few minutes, power reconnected, no change. Tried this three times.

Rechecked every fuse, connector and relay that I touched. Nothing found, errors still there with no cranking.

Next troubleshooting steps including testing CAN connectivity/operation, supply voltage, and ground at each module...after I find them.

thanks for sharing this! it will be very helpful as I try to troubleshoot this rats nest of wires :thumbup:

Wild guess--- IBS sensor,battery to chassis ground,chassis to wiring harness ground??

If you can get hold of ISTA then you can run power management test plan and it can shed some light.Not sure if that test plan is included in the INPA.

I was thinking the same thing. I assume OP disconnected battery for the original repair.

progress
 

ninja_zx11: Ground was also my first thought. I check continuity throughout the vehicle and found no issues. If IBS, I would think a code would appear?

smassey321: Ground was indeed disconnected at the negative battery terminal.

Weather is great today so finally got back into it.

The good news is I'm back to a no start condition with good cranking and no error codes. I'm embarrassed to say that the fault was my own. When I pulled down the fuse box/junction box (JB) to check relays and fuses, it only rotates down a little because of the wires. There is one connector on the top side that is particularly short and needs to be disconnected to access the fuses. Once disconnected, it isn't really visible unless you tuck your head under the dash.

I noticed that many of the error codes were CAN related. I was thinking CAS but I never touched that controller so I back to the JB I went armed with wiring diagrams and my O-scope. This time I had to get up underneath it to look at the bottom JB connector and that's when I saw the dangling top side connecter. Plugged it back in, re-connected the battery,erased the codes and I'm back to it cranks but doesn't fire.

In the hope that this helps others, below is my error report with that connector undone, a photo of the connector and the empty socket in the fuse box. Yes, I did see the empty socket before but there are several empty sockets ( fuse and relay ) so it didn't catch my attention.

E R R O R M E M O R Y
-----------------------
Date: 14.02.2016 16:52:19
Model: E70
Scope: all control module
JobStatus: OKAY
Quantity: 22
-----------------------------------------------------------------
ADR Gen. name JobStatus Number of errors
Error code Kind of error
00 JBBF OKAY 5 Error stored
A6D1 61
C918 64
A737 64
A6C9 68
C914 64
01 MRS OKAY 3 Error stored
9415 E0
9414 E0
93FB E0
12 DME/DDE OKAY 14 Error stored
4DF3 61
4BE3 61
4BE8 61
482F 61
49F3 61
4C23 61
4C28 61
4C13 61
4458 61
4C3D 61
4D3D 61
4BF3 61
4992 61
4B4D 61
17 EKP OKAY No Error stored
19 VGSG OKAY No Error stored
2A EMF OKAY 3 Error stored
6022 E4
6041 E4
D395 E4
36 TEL/MULF OKAY No Error stored
37 AMP OKAY No Error stored
40 CAS OKAY 2 Error stored
A0B5 64
A0B0 28
45 RLS OKAY No Error stored
50 SINE OKAY No Error stored
55 ISPB OKAY No Error stored
56 FZD OKAY No Error stored
60 KOMBI OKAY 5 Error stored
A3AA 60
A3AC 60
A3B9 60
A550 60
A556 60
62 MOSTGW OKAY No Error stored
63 MASK/CCC OKAY 1 Error stored
E1E9 20
64 PDC OKAY 3 Error stored
E21A 60
E21C 60
E21E 60
6B HKL OKAY No Error stored
6D FAS OKAY No Error stored
72 FRM OKAY 7 Error stored
9CBA 64
9CC4 64
9CC3 64
E594 64
A8C1 24
A8C3 24
A8B6 24
92 VIRTSG92 OKAY No Error stored
A0 CCC OKAY No Error stored
================================================== ===============


http://www.xoutpost.com/members/torq...35d-conn-s.jpg

http://www.xoutpost.com/members/torq...fuse-box-s.jpg




Back to troubleshooting the no start condition. I used INPA (don't have ISTA) to read the CAS and found a few suspicious results. Need to investigate further but it looks like the immobilizer (EWS) hasn't detected the presence of a valid key. I'm new to INPA so I don't know what I should be seeing in some of the read controller functions. Next I'll connect to my 335D and compare readings.