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Old 05-02-2020, 08:43 PM
eddeez44 eddeez44 is offline
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Ground Issue with Active Steering Module

Maybe you guys can help me and my mechanic out. I have a 2008 BMW 650i we had to replace the Active Steering Module due to water seeping in and rusting/shorting out the module over time. Now we swapped and programmed but were having a ground issue. The reader said something like ground or 12v isn't getting enough juice to charge up so we tested and it's the ground. Normal it should be 0.2-0.4 but its reading 0.14. All fuses good, has a new battery, checked steering Angle sensor and steering rack all good it's just this ground issue we can't figure out.
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  #2  
Old 05-03-2020, 06:38 AM
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Michael
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It could be a high resistance connection due to corrosion of terminals etc. you may have to disconnect and cleanup until all clear, or use an anti corrosion spray to improve contact. Have a look at the WDS for wiring and connector runs see if you see anything obvious!!
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Old 05-03-2020, 07:51 AM
eddeez44 eddeez44 is offline
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Ok thanks for responding. I texted him what you said will look into it tomorrow since it's Sunday.
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Old 05-03-2020, 06:24 PM
HerbP HerbP is offline
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Quote:
Originally Posted by eddeez44 View Post
Maybe you guys can help me and my mechanic out. I have a 2008 BMW 650i we had to replace the Active Steering Module due to water seeping in and rusting/shorting out the module over time. Now we swapped and programmed but were having a ground issue. The reader said something like ground or 12v isn't getting enough juice to charge up so we tested and it's the ground. Normal it should be 0.2-0.4 but its reading 0.14. All fuses good, has a new battery, checked steering Angle sensor and steering rack all good it's just this ground issue we can't figure out.
The lower resistance you see, the better the ground. .2 to .4, is worse than .14 ohms. If you are not using ISTA or INPA to work on your car, you are going to have trouble finding your problem. If you did not program the new module, it is not going to work properly. You need some BMW software for this.
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Old 05-04-2020, 02:35 PM
eddeez44 eddeez44 is offline
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The module is programmed it's just the ground issue.
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Old 05-05-2020, 03:23 PM
HerbP HerbP is offline
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If you don't have a wiring diagram to work from, go here to trace the wiring. The reason I asked about the programming is, that some people confuse coding for programming. This will get you to the website, & you can change the info for your car. All wiring diagrams will start with a SSP.

https://www.newtis.info/tisv2/a/en/e63-645ci-cou/
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Old 05-05-2020, 05:27 PM
eddeez44 eddeez44 is offline
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Ok thank you so much. I'll relay this to mechanic. It's a little difficult at the time due to the current pandemic to work on cars
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Old 05-05-2020, 06:51 PM
eddeez44 eddeez44 is offline
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Wait this might be a dumb question but can the difference between programming and/or coding the module affect the current running threw it?
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Old 05-05-2020, 07:16 PM
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To program the module, you must change the vin internally in the module, & also change the FO to match the car. This must be done with ISTA/P, or possibly the Tools32. Both of these are BMW software programs. If NCSExpert was used, the module was just simply coded, & the old vin does not match your vin.
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Old 05-06-2020, 10:01 AM
eddeez44 eddeez44 is offline
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Ok thanks for the information and your help. I'll see into this with my mechanic.
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  #11  
Old 05-08-2020, 08:06 AM
eddeez44 eddeez44 is offline
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Well looks like we found the problem. It's the sensor on the negative ground and it's giving it too much ground. But I still bought a can of anti corrosion spray for the ground on the module just in case.
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Old 05-08-2020, 12:01 PM
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Pleased you have found it!!!!
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Old 05-08-2020, 02:44 PM
eddeez44 eddeez44 is offline
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Yes lol. Monday he is going to a junkyard 40 mins from where I live that have a few 5 and 6 series. If none of the cables are good than my final option is to buy it new.
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Old 05-08-2020, 06:56 PM
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Quote:
Originally Posted by eddeez44 View Post
Well looks like we found the problem. It's the sensor on the negative ground and it's giving it too much ground. But I still bought a can of anti corrosion spray for the ground on the module just in case.
Sounds like the IBS, there was a recall for this several years ago. You could check with BMWNA to see if yours applied, or it was replaced. Not sure I have never heard of to much ground?
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Old 05-22-2020, 05:32 AM
eddeez44 eddeez44 is offline
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Well the Ground cable fixed the negative issue and helped alot but now we have a "not enough positive" issue. The brake light went away so now it's just the Active Steering and DSC light that come on after driving it for a while stated by my mechanic for 20-30 minutes. Now he can program, code, communication with the module basically anything and everything just the positive issue now. He checked and rechecked the battery, battery terminals, alternator, angle sensor and everything checked out its Apparently a cable is acting up just haven't been able to pinpoint where. Especially since he can't just hold up customers for my car which I understand. A friend of his is sending him all the wiring diagrams by carrier pidgeon, in the meantime any guesses?
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Old 05-22-2020, 07:35 AM
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could well be a terminal not tightened/ loose, corroded high resistance
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Old 05-22-2020, 04:43 PM
HerbP HerbP is offline
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Quote:
Originally Posted by eddeez44 View Post
Well the Ground cable fixed the negative issue and helped alot but now we have a "not enough positive" issue. The brake light went away so now it's just the Active Steering and DSC light that come on after driving it for a while stated by my mechanic for 20-30 minutes. Now he can program, code, communication with the module basically anything and everything just the positive issue now. He checked and rechecked the battery, battery terminals, alternator, angle sensor and everything checked out its Apparently a cable is acting up just haven't been able to pinpoint where. Especially since he can't just hold up customers for my car which I understand. A friend of his is sending him all the wiring diagrams by carrier pidgeon, in the meantime any guesses?
If he has ISTA to work on a BMW, he will have every possible drawing & technical documents needed. This is what is needed to find your problems.
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Old 05-22-2020, 10:55 PM
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Silly question but have you checked for the positive battery cable recalls? There's now two of them, one for a connection in the boot and one near the glove box but I hoestly don't know if the US has both or just the older one for the boot area .
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Old 05-23-2020, 02:13 PM
eddeez44 eddeez44 is offline
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could well be a terminal not tightened/ loose, corroded high resistance
I'll relay that to him thanks!
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  #20  
Old 05-23-2020, 02:13 PM
eddeez44 eddeez44 is offline
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Originally Posted by HerbP View Post
If he has ISTA to work on a BMW, he will have every possible drawing & technical documents needed. This is what is needed to find your problems.
To be honest I'm not sure what software he uses.
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  #21  
Old 05-23-2020, 02:15 PM
eddeez44 eddeez44 is offline
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Originally Posted by Hsurf View Post
Silly question but have you checked for the positive battery cable recalls? There's now two of them, one for a connection in the boot and one near the glove box but I hoestly don't know if the US has both or just the older one for the boot area .
Well I didn't even know the 6 series had 2 positive cables. Mine is a 2008, I tried google for positive cables but only the one in the boot show but I told him that anyway.
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Old 05-23-2020, 06:31 PM
HerbP HerbP is offline
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That was for the IBS, located on the negative cable from the battery, but there are 2 positive cables.
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Old 05-23-2020, 06:33 PM
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Originally Posted by eddeez44 View Post
To be honest I'm not sure what software he uses.
Go back to the 6th post in this thread, & click on the link. This link has every possible wiring diagram for your car, I really worry about your mechanic?
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  #24  
Old 05-24-2020, 11:02 PM
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Quote:
Originally Posted by HerbP View Post
That was for the IBS, located on the negative cable from the battery, but there are 2 positive cables.
These seem to indicate the B+ only and not the negative or IBS connection???

https://car-recalls.co.uk/recall/bmw...-risk-of-fire/

https://car-recalls.co.uk/recall/bmw...battery-cable/

As I say these are UK so I'm not sure if the US has them or even which websites over there to check for them.
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Old 05-25-2020, 05:33 PM
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IBS link

https://www.youcanic.com/guide/bmw-w...s-sensor-fault
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