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      05-22-2021, 09:32 PM   #1
ENintyTwo
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07 E92 No Sound For Two Years....

I purchased this vehicle two years ago and the amplifier was missing and never paid too much mind to it until now as I’ve purchased a verified working amp. But I’ve noticed these two wires don’t go nowhere what am I missing I tried the Orange Loop, Wires to still no avail please help Amp shows yellow solid light. I believe I’m missing another component but I can’t seem to figure out what it is

SOS Malfuntion No Gong Etc, all I want is radio just some kind of noise to drown out the exhaust

Thanks in advance.
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      05-22-2021, 10:04 PM   #2
ctuna
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Do yoiu have usb option 6fl.

Do you have the usb option 6fl.
If you do there is another module called the mulf 2 hi
hidden under the TCU on the right which also has a
Mulf connection that need to be jumped out.
Also there is a most port test point at the panel under the steering
wheel . That has another jumper sometimes people working
on the car forget to plug that in . (pictures shown in links)
The Leds on the amp also will tell you if the Most loop is intact
to it. .(see last link on page)
Head Unit changed out by previous owner and not programmed to
Logic 7 ? Head Unit Bad ?
You can check basic functions on the Most Line by shinning a flashligt in on end and
seeing it come out the other . (the fibers themselves )

If you have a car made up to and including 09 you will have
pre wiring which means there will be extra wiring and connectors
lying around such as another most cable going to the amp area.

Logic 7
https://www.e90post.com/forums/showthread.php?t=1056432
http://www.bmwlogicseven.com/?p=3837
http://www.bmwgm5.com/
https://www.e90post.com/forums/showt...5#post24455335
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.google.fr/url?sa=t&rct=j&...slMu2A&cad=rjt
https://www.bmwgm5.com/Logic7_E90_91_92_93.htm
http://www.bimmerfest.com/forums/sho...d.php?t=982666


http://www.e90post.com/forums/attach...1&d=1209780605
Most
http://www.e90post.com/forums/showthread.php?t=727663
http://www.e90post.com/forums/showthread.php?t=347222
https://www.google.com/search?q=BMW+...VCkMqy2aCK09M:
http://www.1addicts.com/forums/showt...php?p=19256760
https://www.teacremotes.com/bmwgm5/
Diagnostic Manuals Inpa/Ista D
https://bimmerprofs.com/diagnostics-inpa-part-1/
https://www.google.com/url?sa=t&rct=...7x8H3pN8h1fMuF
https://carmod.ru/files/icom/istad_en.pdf
https://www.e90post.com/forums/showthread.php?t=1681573
https://www.bimmerforums.com/forum/s...-P-actually-do
primary links
https://www.bimmerfest.com/forums/at...9&d=1539905743
https://www.e90post.com/forums/showthread.php?t=1681573
https://www.bimmerfest.com/forums/at...1&d=1590283589
https://www.nathansbmwworkshop.com/b...or-dean-videos

new link for logic 7 leds
https://www.bavlogic.com/?tag=loop

Last edited by ctuna; 05-22-2021 at 10:25 PM..
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      05-22-2021, 10:52 PM   #3
ENintyTwo
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Quote:
Originally Posted by ctuna View Post
Do you have the usb option 6fl.
If you do there is another module called the mulf 2 hi
hidden under the TCU on the right which also has a
Mulf connection that need to be jumped out.
Also there is a most port test point at the panel under the steering
wheel . That has another jumper sometimes people working
on the car forget to plug that in . (pictures shown in links)
The Leds on the amp also will tell you if the Most loop is intact
to it. .(see last link on page)
Head Unit changed out by previous owner and not programmed to
Logic 7 ? Head Unit Bad ?
You can check basic functions on the Most Line by shinning a flashligt in on end and
seeing it come out the other . (the fibers themselves )

If you have a car made up to and including 09 you will have
pre wiring which means there will be extra wiring and connectors
lying around such as another most cable going to the amp area.

Logic 7
https://www.e90post.com/forums/showthread.php?t=1056432
http://www.bmwlogicseven.com/?p=3837
http://www.bmwgm5.com/
https://www.e90post.com/forums/showt...5#post24455335
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.google.fr/url?sa=t&rct=j&...slMu2A&cad=rjt
https://www.bmwgm5.com/Logic7_E90_91_92_93.htm
http://www.bimmerfest.com/forums/sho...d.php?t=982666


http://www.e90post.com/forums/attach...1&d=1209780605
Most
http://www.e90post.com/forums/showthread.php?t=727663
http://www.e90post.com/forums/showthread.php?t=347222
https://www.google.com/search?q=BMW+...VCkMqy2aCK09M:
http://www.1addicts.com/forums/showt...php?p=19256760
https://www.teacremotes.com/bmwgm5/
Diagnostic Manuals Inpa/Ista D
https://bimmerprofs.com/diagnostics-inpa-part-1/
https://www.google.com/url?sa=t&rct=...7x8H3pN8h1fMuF
https://carmod.ru/files/icom/istad_en.pdf
https://www.e90post.com/forums/showthread.php?t=1681573
https://www.bimmerforums.com/forum/s...-P-actually-do
primary links
https://www.bimmerfest.com/forums/at...9&d=1539905743
https://www.e90post.com/forums/showthread.php?t=1681573
https://www.bimmerfest.com/forums/at...1&d=1590283589
https://www.nathansbmwworkshop.com/b...or-dean-videos

new link for logic 7 leds
https://www.bavlogic.com/?tag=loop
To think about it the previous owner did tell me he changed out some thing that needed to be programmed but never did it how would I check and I’ll also check the jumper underneath the steering wheel.
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      05-23-2021, 10:04 AM   #4
ctuna
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You need BMW Standard Tools suite and a Bimmergeeks
Cable plus a laptop. (Go to the coding sub forum for this)

Then you have to use it to read how the modules are coded.
If you have a car made after 3/07 you may need the more expensive
Icom Cable to program Most Bus modules.
You can try to default code the Head Unit with the CAR VO if it still
had Logic 7 (option 677 and or 688 in the VO)

This starts our by learning to read an program the modules in
NCSexpert. However a SOS error does genrally result from
a broken Most Loop.

Most test point
http://www.e90post.com/forums/showthread.php?t=347222

You should see a Red Light coming out of one side of the Head unit on the
Most Bus cable.

Last edited by ctuna; 05-23-2021 at 10:20 AM..
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      05-23-2021, 01:14 PM   #5
ctuna
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Forgot about this but

Forgot about this but one indirect way to tell if the Head Unit is programmed
for Logic 7
Logic 7 has some different menu's
It has a graphic equalizer and some canned sound modes not present
in the other Sound systems. (when the unit is programed for stereo or Hi Fi no graphic equalizer menu)
There is a maintenance mode where you can read what it's programmed for
to .
Which idrive fo you have ccc or cic?
or do you have pro radio?

http://www.e90post.com/forums/attach...2&d=1260829447

This guy shows how to get to the equalizer in the last half of the video.


compatible firmware in the amplifier is also sometimes and issue.

Last edited by ctuna; 05-23-2021 at 02:28 PM..
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      05-24-2021, 10:53 PM   #6
ENintyTwo
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Quote:
Originally Posted by ctuna View Post
Forgot about this but one indirect way to tell if the Head Unit is programmed
for Logic 7
Logic 7 has some different menu's
It has a graphic equalizer and some canned sound modes not present
in the other Sound systems. (when the unit is programed for stereo or Hi Fi no graphic equalizer menu)
There is a maintenance mode where you can read what it's programmed for
to .
Which idrive fo you have ccc or cic?
or do you have pro radio?

http://www.e90post.com/forums/attach...2&d=1260829447



This guy shows how to get to the equalizer in the last half of the video.


compatible firmware in the amplifier is also sometimes and issue.
I have the sound adjustability menu I messed with it today. But I checked the optic under the steering wheel and there is no light admitting from it at all or as the others all have the red light.
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      05-25-2021, 02:07 AM   #7
ctuna
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And by sound menu do you mean the graphic eq adjustment screen.
Check the back of the Radio or Idrive for light output .
And check for light at the Most Hub.
Hub is shown in some of the links.
One guy on here had rats eat his fiber optics.
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      05-25-2021, 11:23 AM   #8
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Quote:
Originally Posted by ctuna View Post
And by sound menu do you mean the graphic eq adjustment screen.
Check the back of the Radio or Idrive for light output .
And check for light at the Most Hub.
Hub is shown in some of the links.
One guy on here had rats eat his fiber optics.
Correct the Graphic EQ. Do I have to physical remove the Idrive screen ?
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      05-25-2021, 05:39 PM   #9
ctuna
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No the most is attached to the lower unit.
with the buttons
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      08-04-2021, 03:20 PM   #10
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the another MOST cable in same place is for cd-changer preparation, it is not connected on MOST junction box and should be ignored.
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