No Sound or Audio - TCU or MOST?

Hamee69 · 02-17-2019, 02:10 PM

Quote:

Originally Posted by ctuna

Battery voltage it to Low .
Put it on a trickle charger for about 5 hours plus.
and see if things improve.
Charge/Jumper points are under the hood.
If the Nav does not light up it could still be
the IBS messing with you.

Will hook to trickle charge now.

ctuna · 02-17-2019, 02:34 PM

Also low battery voltage can cause false error codes
during diagnostics.
Clear codes and run full diagnosis when the battery
is fully charged with the car turned on and running.
Also did the Nav come back after doing this?

Hamee69 · 02-17-2019, 05:19 PM

Quote:

Originally Posted by ctuna

Also low battery voltage can cause false error codes
during diagnostics.
Clear codes and run full diagnosis when the battery
is fully charged with the car turned on and running.
Also did the Nav come back after doing this?

Still on trickle i wont see the car again until tomorrow afternoon. I will let you know. Run carly with engine running or just the car "on"

Nickco43 · 02-17-2019, 05:21 PM

Quote:

Originally Posted by Hamee69

Still on trickle i wont see the car again until tomorrow afternoon. I will let you know. Run carly with engine running or just the car "on"

I always code with the engine running. I am not sure how Carly wants you to do it.

Hamee69 · 02-18-2019, 06:45 AM

Quote:

Originally Posted by ctuna

Also low battery voltage can cause false error codes
during diagnostics.
Clear codes and run full diagnosis when the battery
is fully charged with the car turned on and running.
Also did the Nav come back after doing this?

Unattached charger this morning and battery at the terminals under the hood read 13.24 volts. Turn car on and still no navigation. I will return after work and try another diagnostic test and see what faults show up.

ctuna · 02-18-2019, 11:58 AM

https://www.newtis.info/tisv2/a/en/e...supply/kZ7hPxE

https://www.newtis.info/tisv2/a/en/e...-power-supply/

Hamee69 · 02-18-2019, 12:09 PM

Quote:

Originally Posted by ctuna

https://www.newtis.info/tisv2/a/en/e...supply/kZ7hPxE

https://www.newtis.info/tisv2/a/en/e...-power-supply/

I pulled the large black relay yesterday and inspected it and the terminals for discoloration of any sort to point towards something having burned out and saw nothing. Upon reinstalling the relay i could hear things turn back on. Presumably the other items powered off that relay so im guessing the relay is good because of that right?

ctuna · 02-18-2019, 12:14 PM

https://www.e90post.com/forums/attac...9&d=1361308448

No bistable relay fail anymore ?
check voltage at Nav/idrive controller
and fuse on back .
If you have voltage and intact fuses
bad Nav probably.

Hamee69 · 02-18-2019, 12:26 PM

Quote:

Originally Posted by ctuna

https://www.e90post.com/forums/attac...8;d=1361308448

What should i check next? Done so much reading of this stuff you are showing me and my brain is swollen lol

ctuna · 02-18-2019, 01:12 PM

Is the bistable relay failure still present?

http://pinoutguide.com/Car-Stereo-Au...3_pinout.shtml

Is there 12 volts on pin 15 on the connector at the above link
is the fuse good on the connector on the back of the CCC good.
Is the fuse for the Nav on the fuse board good?

F31 must have pulled the wrong diagram before said f40
fuses are based on monthly build changes.

You may find the following link useful in the future.

https://www.bimmerfest.com/forums/at...9&d=1539905743

Nickco43 · 02-18-2019, 02:24 PM

Quote:

Originally Posted by ctuna

Is the bistable relay failure still present?

http://pinoutguide.com/Car-Stereo-Au...3_pinout.shtml

Is there 12 volts on pin 15 on the connector at the above link
is the fuse good on the connector on the back of the CCC good.
Is the fuse for the Nav on the fuse board good?

F31 must have pulled the wrong diagram before said f40
fuses are based on monthly build changes.

You may find the following link useful in the future.

https://www.bimmerfest.com/forums/at...9&d=1539905743

Online fuse diagrams are never right for this car. The in car fuse sheet seems to be the most accurate.

ctuna · 02-18-2019, 02:33 PM

The link with the picture or the fuse box is from the Bently
manual .
The chart hidden behind the glove seems to disappear in used
cars.

Hamee69 · 02-18-2019, 02:35 PM

Quote:

Originally Posted by ctuna

The link with the picture or the fuse box is from the Bently
manual .

I will test power at the said fuses and pinouts when i get home.

Hamee69 · 02-18-2019, 04:27 PM

Quote:

Originally Posted by Hamee69

Quote:

Originally Posted by ctuna

The link with the picture or the fuse box is from the Bently
manual .

I will test power at the said fuses and pinouts when i get home.

Ok making progress.... opened fuses box and put a fuse into number 23 and radio comes on but no sound and no screen.

ctuna · 02-18-2019, 05:28 PM

Highly odd that you would be missing a fuse.

I would say take it back out.

Hamee69 · 02-18-2019, 05:29 PM

Quote:

Originally Posted by ctuna

Highly odd that you would be missing a fuse.

I would say take it back out.

Even since i put it in the radio lights wont shit off. And that fuse was sitting in the glove box i figured it was just a spare. Maybe they took it out because thats what drained the battery?

Hamee69 · 02-18-2019, 05:37 PM

Quote:

Originally Posted by Hamee69

Quote:

Originally Posted by ctuna

Highly odd that you would be missing a fuse.

I would say take it back out.

Even since i put it in the radio lights wont shit off. And that fuse was sitting in the glove box i figured it was just a spare. Maybe they took it out because thats what drained the battery?

While im here with the car anything you would like me to test?

Hamee69 · 02-18-2019, 05:44 PM

Quote:

Originally Posted by Hamee69

Quote:

Originally Posted by Hamee69

Quote:

Originally Posted by ctuna

Highly odd that you would be missing a fuse.

I would say take it back out.

Even since i put it in the radio lights wont shit off. And that fuse was sitting in the glove box i figured it was just a spare. Maybe they took it out because thats what drained the battery?

While im here with the car anything you would like me to test?

Thats all i have

Hamee69 · 02-18-2019, 05:46 PM

What the previous owner said about the fuse.

ctuna · 02-18-2019, 05:47 PM

Take out fuse 23 make sure everything is back to where
it was fuse wise . Make sure the battery voltage is still
good . Clear errors and run the entire set of diags.
Expand the error messages from terminal 30g. bistable
relay is that error still there?

So the original owner new about fuse 23 but didn't tell you.
Amazing.
F31 or F40 should still be the main fuse for the CCC
If the fuse is good you will have to pull the CCC and verify
that there is 12 volts on the connector and that the fuse
on the back of the unit is not blown.

If both those are true then you need a new unit most likely .

Hamee69 · 02-18-2019, 06:03 PM

Quote:

Originally Posted by ctuna

Take out fuse 23 make sure everything is back to where
it was fuse wise . Make sure the battery voltage is still
good . Clear errors and run the entire set of diags.
Expand the error messages from terminal 30g. bistable
relay is that error still there?

So the original owner new about fuse 23 but didn't tell you.
Amazing.
F31 or F40 should still be the main fuse for the CCC
If the fuse is good you will have to pull the CCC and verify
that there is 12 volts on the connector and that the fuse
on the back of the unit is not blown.

If both those are true then you need a new unit most likely .

What fuses are f31 and 40 from my view though

Nickco43 · 02-18-2019, 06:09 PM

13, 23 and 24 are for the screen,

2, 23, 31 are for the navi.

02-17-2019, 02:34 PM	#24
ctuna Lieutenant General 2036 Rep 13,349 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Also low battery voltage can cause false error codes during diagnostics. Clear codes and run full diagnosis when the battery is fully charged with the car turned on and running. Also did the Nav come back after doing this? Last edited by ctuna; 02-17-2019 at 04:58 PM..
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02-18-2019, 11:58 AM	#28
ctuna Lieutenant General 2036 Rep 13,349 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	https://www.newtis.info/tisv2/a/en/e...supply/kZ7hPxE https://www.newtis.info/tisv2/a/en/e...-power-supply/
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02-18-2019, 12:14 PM	#30
ctuna Lieutenant General 2036 Rep 13,349 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	https://www.e90post.com/forums/attac...9&d=1361308448 No bistable relay fail anymore ? check voltage at Nav/idrive controller and fuse on back . If you have voltage and intact fuses bad Nav probably. Last edited by ctuna; 02-18-2019 at 12:28 PM..
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02-18-2019, 02:33 PM	#34
ctuna Lieutenant General 2036 Rep 13,349 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	The link with the picture or the fuse box is from the Bently manual . The chart hidden behind the glove seems to disappear in used cars.
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02-18-2019, 05:28 PM	#37
ctuna Lieutenant General 2036 Rep 13,349 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Highly odd that you would be missing a fuse. I would say take it back out.
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02-18-2019, 05:46 PM	#41
Hamee69 Enlisted Member 0 Rep 42 Posts Drives: 2006 BMW 325XI Join Date: Feb 2019 Location: New Hampshire iTrader: (0)	What the previous owner said about the fuse. Attached Images
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02-18-2019, 05:47 PM	#42
ctuna Lieutenant General 2036 Rep 13,349 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Take out fuse 23 make sure everything is back to where it was fuse wise . Make sure the battery voltage is still good . Clear errors and run the entire set of diags. Expand the error messages from terminal 30g. bistable relay is that error still there? So the original owner new about fuse 23 but didn't tell you. Amazing. F31 or F40 should still be the main fuse for the CCC If the fuse is good you will have to pull the CCC and verify that there is 12 volts on the connector and that the fuse on the back of the unit is not blown. If both those are true then you need a new unit most likely . Last edited by ctuna; 02-18-2019 at 05:54 PM..
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02-18-2019, 06:09 PM	#44
Nickco43 Lieutenant Colonel 1559 Rep 1,942 Posts Drives: 2017 BMW 540i Join Date: Apr 2018 Location: Denver, CO iTrader: (1) Garage List 2017 BMW [0.00]	13, 23 and 24 are for the screen, 2, 23, 31 are for the navi.
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