[gbalthrop]

ISTA ScreenPrints per prior post, Early 2007 (2007A) 335i N54.
George

[Dfbpurcell]

Originally Posted by gbalthrop

I would start by checking the 3 DSC Fuses (F20, F35, F65). Then separate the DSC Connector X18303 and test for Voltage at Sockets #1 & #32 (Terminal 30 Battery Voltage), and at Socket #17 with Ignition ON (Terminal 30G Voltage).

Thanks for your help.

I replaced the fuses and the 30G relay, but there is no voltage to socket 17 on the DSC connector with the ignition on.

If I am interpreting the ISTA diagram correctly, does that mean it is directly connected to the fuse box, and the fuse box itself is the problem? (I only replaced the JBE/BCM module connected to the fuse box, but I noticed the fuse box doesn't accept the active steering fuse even though I have active steering. The engine dropped onto the steering rack - maybe it yanked some cables at of the back of the fuse box?

[gbalthrop]

Originally Posted by Dfbpurcell

... there is no voltage to socket 17 on the DSC connector with the ignition on...

Note the Connector, X11001, where the Red/Green wire connects to the firewall side of the JB Fuse Panel. Pin #10 of that connector
(X11001/10) is the Red/Green wire that goes to X18303/17 where you are getting NO voltage with Ignition ON (Terminal 30G Active).

BEFORE you remove the JB FuseBox to check the pins/sockets at X11001/10, I would remove fuse F20 (5A), and check to see if you
have voltage at ONE of the two empty fuse sockets with ignition ON. Measure Voltage in Reference to Chassis Ground. If you get NO
voltage there when Ignition is ON, you have a JB issue (rare). ISTA X11001 Location & Connector View diagrams are attached.

More likely is an issue with X11001/10 or the Red/Green wire between X11001/10 and DSC X18303/17. I have NO IDEA how
that wire is routed between JB & DSC.

Please let us know what you find,
George

[vilord]

Originally Posted by Dfbpurcell

the fuse box doesn't accept the active steering fuse even though I have active steering. The engine dropped onto the steering rack

What do you mean by "the fuse box doesn't accept the active steering fuse"? Like, it blows when you put one in?

And, how long ago did the engine "drop" onto the steering rack?


One thing you could also check is whether anything else on 30G is getting power. When you put in the key and power up the car, does the CIC display? or radio turn on? Does the HVAC work, can you turn on the cabin air fan?

Active steering is on the same relay.

Attached is a basic energy terminals diagnosis doc from WDS and a more detailed bus and voltage doc from a training manual (that doesn't actually say which terminal things are on, since that is part of the training)

[Luper52]

Wipers were always on for me as well along with doors not locking, headlights stayed on, and windows wouldn't roll up or down.

Was faulty JBE module. Replaced and works great. I have an 01/07 335i E90

[gbalthrop]

Originally Posted by Dfbpurcell

... I noticed the fuse box doesn't accept the active steering fuse even though I have active steering...

By "doesn't accept", do you mean there are NO metal sockets into which to insert the two fuse "spades"? I don't have the early
JB Fuse Panel (used in vehicles build PRIOR to 3/1/2007), and I don't have Active Steering. However, it appears there MAY be a
discrepancy between ISTA fuse identification and Bentley Manual. What reference are you using to identify the "Active Steering Fuse",
and what fuse# are you referencing? Do you have the "Fuse Chart Tri-fold" attached to the Glovebox removable panel? What does THAT say?

ISTA basically shows increasing numbers from Left-to-Right, Top-to-Bottom, while Bentley shows sequentially-increasing numbers
in a column. See the attached ISTA ScreenPrint related to Fuse F45 supplying power to Active Steering Module.

There are TWO ways that diagram could be interpreted for F45 Location. If you apply the same "Left-to-Right", THEN
"Top-to-Bottom" numbering convention as is used in same sized fuses ABOVE the group in question:
1) Fuse F45 is to the RIGHT of fuse F44, at the TOP of the Second column of 3 fuses.
2) OTHER interpretation: If Convention is NOT followed, fuse F45 is directly BENEATH fuse F44.

Please let us know if EITHER the fuse socket:
1) to RIGHT of F44 in attached diagram; or
2) BENEATH F44 in diagram
has NO metal sockets to accept fuse spades.
George

[vilord]

gbalthrop if I remember right (as I used to have an 03/2007 car), most of the fuses are in the same physical location on 02/2007 and 03/2007, it was just the numbering was completely changed.

Dfbpurcell not sure how much stuff you have taken apart at the moment... if I was in your shoes I would take out the dashboard (takes a couple of hours) then unhook the fuse box from the mount and get a flashlight in there and look for water intrusion into the fuse box.

DM me if you don't have access to the bmw tech info system documentation that will give descriptions and pictures of each step of disassembly.

[Dfbpurcell]

Originally Posted by gbalthrop

it appears there MAY be a
discrepancy between ISTA fuse identification and Bentley Manual.

Thank you, the fuse diagrams online and in the Bentley manual were different to ISTA.

I created this chart based on searching for every fuse SSP and the main fuse diagram in ISTA based on my VIN. There are a few discrepancies between the individual SSPs and the main diagram, but I compared it to an old photo of my fuse box in its last known working configuration and for the most part it is correct. I have successfully been able to connect to the DSC and factory code it and the wipers no longer turn on by themselves, however the windows don't work via the door switches (they do via protool), the speedo oscillates between 0 and 20km/h with the ignition on, TMPS and the car won't give the key fob back or turn off! I can turn the ignition on once and turn the ignition off once, but not turn it back on again or turn the car completely off. To turn the car off, I have to disconnect the battery. Matching the ISTA diagram directly and matching the original known good configuration doesn't make a difference. It seems something that requires the ignition to be on is interfering with the bus that the gauge cluster is on. Also, trans is not receiving LDM message, according to ISTA

"On vehicle with option 544 ”Cruise control with brake function”, there is no LDM control unit fitted" Because of a software modification in the DSC control unit (DSC Mk60E5), the DSC control unit assumes control of the functions of the LDM control unit.

I have option 544 but it is throwing a code for it which previously wasn't there.

. These problems are new since switching the fuses to match the original configuration / ista configuration and failing the steering angle sensor initialization half way through.



CODES:

CF2B
5E50 (after factory coding the DSC I factory coded the new (2nd hand) steering rack and tried to initialize steering angle sensor and the car seemed to freak out half way through.)
CE93
614A

Any ideas?



As a reminder, the following were replaced:

All fuses
terminal 30g relay (I0168 on chart)
DSC module (used, coded)
battery (new, coded)
ibs cables (new)
battery ground (new)
engine ground (new)
JBE module (used, coded)
voltage regulator (new)
battery distribution box (new)
afs steering rack and harness from e90 with different engine (2nd hand)

[lnxguy]

You check the ground straps?

[Dfbpurcell]

Originally Posted by lnxguy

You check the ground straps?

I replaced the one on the battery and the one on the engine. Are there others I should be looking for?

[vilord]

There are two in the engine bay, one is on the driver's side just behind the wheel arch accessed from the bottom, that's the main ground used for the starter and alternator.
The second is on the passenger side above the exhaust manifold, that one is primarily used for electrical noise filtering purposes.

[Dfbpurcell]

Originally Posted by vilord

There are two in the engine bay, one is on the driver's side just behind the wheel arch accessed from the bottom, that's the main ground used for the starter and alternator.
The second is on the passenger side above the exhaust manifold, that one is primarily used for electrical noise filtering purposes.

Thank you. I only replaced the one connected to the engine mount as I couldn't see one on the other side of the car. Before I had these issues, I pulled the exhaust and everything on the exhaust side and didn't see any ground strap

[vilord]

This shows a few photos of where the passenger side ground wire is

https://www.e90post.com/forums/showthread.php?t=1771250

[Dfbpurcell]

Originally Posted by vilord

This shows a few photos of where the passenger side ground wire is

https://www.e90post.com/forums/showthread.php?t=1771250

my car is a rhd 335i, not whatever that is. there is a ground that runs to the dme box and a ground connecting the engine mount to the chassis and they are both fine. I am starting to think the active steering rack I bought is causing these issues. It is from another e90 that had a different engine, but the wrecker said it would work. Does anybody know of any differences between the active steering racks between cars with different engines? Replacement fuse box finally arrived today but it looks like it was pulled from a car that was left in the rain. I will try it anyway

[NZE90]

The diesel and petrol active steering racks are all the same for the whole E9x range

[NZE90]

What is your location in New Zealand?

[Dfbpurcell]

Originally Posted by NZE90

The diesel and petrol active steering racks are all the same for the whole E9x range

There are different harnesses with different amounts of connectors though

[NZE90]

Have you fixed it yet?

[Dfbpurcell]

Originally Posted by NZE90

Have you fixed it yet?

No, something is introducing noise into the wheel speed signal and there is limited LIN bus communication. Speedo is hovering around 10km/h with ignition on. Put 4 brand new wheel speed sensors in today and no change.

[Don N.]

Did you ever figure this out? Did your car turn on during this entire time or was it not able to start?

[magaizeris]

I have same problem, you fixed it?
P.s i can't access to abs

[gbalthrop]

Originally Posted by magaizeris

I have same problem, you fixed it?
P.s i can't access to abs

I would suggest: START a NEW THREAD, & provide:
0) Detailed description of Symptoms/Issues & WHEN they occur;
1) Last-7 Characters of VIN;
2) All Warning Lights that appear on Instrument Cluster after Engine Start;
3) Make/Model Scan Tool or Diagnostic Software (INPA/ISTA) available;
4) ALL fault codes read in ALL Modules;
5) Whether your Scan Tool/ Software can display: a) Freeze Frame Data; b) Live Data?

This thread is a classic case of NUMEROUS helpful folks, with different approaches, unintentionally CONFUSING the OP. Result: NO solution posted, 2 years later.
George