TCU Only to Combox Retrofit questions (CIC Retro Complete)

jcsydney · 12-08-2018, 10:33 PM

Quote:

Originally Posted by Nickco43

https://drive.google.com/file/d/1jWh...o2BAwWQDT/view

If you do not make fun of spelling / grammar mistakes here is the a pre-release of my combox kit install guide. I have not has time to proof read it yet. Once I am done finals I am going to be dropping a lot of diys and redoing some old ones.

cheers having a look now...hopefully you can see my images above...ill triple check my wiring again i guess...ive played around with pin 1 and 2 for power...same result...ncs giving me error when connecting to media...

ill add the error in next message

jcsydney · 12-08-2018, 10:34 PM

View post on imgur.com

Nickco43 · 12-08-2018, 10:38 PM

Quote:

Originally Posted by jcsydney

View post on imgur.com

Your combox plug has more wires than mine but the mission critical wires are in the correct place. If you download my PDF the blue and stripped wires looks slightly different to mine.

Power pin one is for combox media and power pin two is for the one with bmw assist. Is inpa running while you are trying to code with NCS expert? NCSexpert will not working while inpa is running.

jcsydney · 12-08-2018, 10:57 PM

Quote:

Originally Posted by Nickco43

Your combox plug has more wires than mine but the mission critical wires are in the correct place. If you download my PDF the blue and stripped wires looks slightly different to mine.

Power pin one is for combox media and power pin two is for the one with bmw assist. Is inpa running while you are trying to code with NCS expert? NCSexpert will not working while inpa is running.

Inpa not running whilst using ncs...still have most open from mulf as waiting on the loop to arrive...but dont think this will affect the issue im having.

Had a look at your pdf..looks great...checked the connections and they all seem to match what ive done.

Ill check what your saying re blue and striped wires being slighty different...i think you mean pins 17 and 20 looked swapped on yours compared to mine?

Nickco43 · 12-08-2018, 10:59 PM

Quote:

Originally Posted by jcsydney

Inpa not running whilst using ncs...still have most open from mulf as waiting on the loop to arrive...but dont think this will affect the issue im having.

Had a look at your pdf..looks great...checked the connections and they all seem to match what ive done.

Ill check what your saying re blue and striped wires being slighty different...i think you mean pins 17 and 20 looked swapped on yours compared to mine?

The combox is coded off the most connection. It will not connect if there is a broken most bus.

jcsydney · 12-08-2018, 11:08 PM

Quote:

Originally Posted by Nickco43

The combox is coded off the most connection. It will not connect if there is a broken most bus.

i thought most only was for audio...so should be able to connect etc but not hear anything?...or am i wrong?

so ill have to wait for most loop to arrive before i can connect to combox?

is it possible to just plug it into the old tcu or mulf?

Thanks

jc

Nickco43 · 12-08-2018, 11:13 PM

Quote:

Originally Posted by jcsydney

i thought most only was for audio...so should be able to connect etc but not hear anything?...or am i wrong?

so ill have to wait for most loop to arrive before i can connect to combox?

is it possible to just plug it into the old tcu or mulf?

Thanks

jc

The MOST bus is a major data transfer system in the car. You will not be able to connect to the combox without it fully working. Try giving power to the mulf or tcu and plugging it in to the most bus for now.

ctuna · 12-09-2018, 01:19 AM

Possible most bus modules TCU, Mulf , combox , sat module.
DAB , IBOC , CDC, Logic 7 amplifier plus the head unit be it
idrive or pro radio.
If any module in the most loop is bad the whole loop stops working.
The first indication is loss of sound in a Logic 7 system.

Usb comes from the mulf 2 hi or combox.
Wireless bluetooth music comes from a combox in and idrive
equipped system.

jcsydney · 12-09-2018, 04:00 AM

Quote:

Originally Posted by Nickco43

The MOST bus is a major data transfer system in the car. You will not be able to connect to the combox without it fully working. Try giving power to the mulf or tcu and plugging it in to the most bus for now.

nope same result...ill just wait for the loop to arrive and see what happens

...

cheers

jcsydney · 12-09-2018, 04:06 AM

Quote:

Originally Posted by ctuna

Possible most bus modules TCU, Mulf , combox , sat module.
DAB , IBOC , CDC, Logic 7 amplifier plus the head unit be it
idrive or pro radio.
If any module in the most loop is bad the whole loop stops working.
The first indication is loss of sound in a Logic 7 system.

Usb comes from the mulf 2 hi or combox.
Wireless bluetooth music comes from a combox in and idrive
equipped system.

but would this only affect audio? or would it also make it unable to connect to combox.....starting to wonder if i need can hi/low in pins 5/6?

jcsydney · 12-09-2018, 04:49 AM

Just noticed when I reconnected the tcu with only power and ground and plugged it in....prior to plugging in most the tcu had a red light coming out of it(at most connection point)...I'm guessing combox should do the same?..I havnt seen the combox do this...should I be seeing the combox power up the same as the tcu?

Greghole98 · 12-09-2018, 08:01 AM

anyone know how to remove the sos error after the retrofit

Nickco43 · 12-09-2018, 10:13 AM

Quote:

Originally Posted by Greghole98

anyone know how to remove the sos error after the retrofit

If everything is installed properly you will not get an SOS error. To delete the SOS error add -TELD to your VO and code the kombi module.

Greghole98 · 12-09-2018, 10:14 AM

Quote:

Originally Posted by Nickco43

Quote:

Originally Posted by Greghole98

anyone know how to remove the sos error after the retrofit

If everything is installed properly you will not get a SOS error. To delete the SOS error add -TELD to your VO and code the kombi module.

Quote:

Originally Posted by Nickco43

Quote:

Originally Posted by Greghole98

anyone know how to remove the sos error after the retrofit

If everything is installed properly you will not get a SOS error. To delete the SOS error add -TELD to your VO and code the kombi module.

just the kombi? and removing it from the vo on my kombi wont hide other errors right

Nickco43 · 12-09-2018, 10:17 AM

Quote:

Originally Posted by Greghole98

just the kombi? and removing it from the vo on my kombi wont hide other errors right

You are not removing any of the VO codes. You are adding "-TELD". This is the factory code that removes BMW Assist.

Greghole98 · 12-09-2018, 10:18 AM

Quote:

Originally Posted by Nickco43

Quote:

Originally Posted by Greghole98

just the kombi? and removing it from the vo on my kombi wont hide other errors right

You are not removing any of the VO codes. You are adding "-TELD". This is the factory code that removes BMW Assist.

Quote:

Originally Posted by Nickco43

Quote:

Originally Posted by Greghole98

anyone know how to remove the sos error after the retrofit

If everything is installed properly you will not get a SOS error. To delete the SOS error add -TELD to your VO and code the kombi module.

ohh, I thought by removing that from the kombi it would just be hiding it from displaying on the instrument cluster, thank you

ctuna · 12-09-2018, 12:12 PM

Yes that is the standard fix .
There doesn't seem to be any side effects from it.

If you removed the TCU you will get and SOS error as that
is where SOS resides.
Also the switch in the FZD but I don't think most people change
that out.

12-08-2018, 10:34 PM	#24
jcsydney New Member 0 Rep 25 Posts Drives: 335i Touring Join Date: Oct 2018 Location: Australia iTrader: (0)	View post on imgur.com
	Appreciate 0 Quote

12-09-2018, 01:19 AM	#30
ctuna Lieutenant General 1911 Rep 13,102 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Possible most bus modules TCU, Mulf , combox , sat module. DAB , IBOC , CDC, Logic 7 amplifier plus the head unit be it idrive or pro radio. If any module in the most loop is bad the whole loop stops working. The first indication is loss of sound in a Logic 7 system. Usb comes from the mulf 2 hi or combox. Wireless bluetooth music comes from a combox in and idrive equipped system.
	Appreciate 1 jcsydney0.00 Quote

12-09-2018, 04:49 AM	#33
jcsydney New Member 0 Rep 25 Posts Drives: 335i Touring Join Date: Oct 2018 Location: Australia iTrader: (0)	Just noticed when I reconnected the tcu with only power and ground and plugged it in....prior to plugging in most the tcu had a red light coming out of it(at most connection point)...I'm guessing combox should do the same?..I havnt seen the combox do this...should I be seeing the combox power up the same as the tcu? Last edited by jcsydney; 12-09-2018 at 05:05 AM..
	Appreciate 0 Quote

12-09-2018, 08:01 AM	#34
Greghole98 Private First Class 12 Rep 105 Posts Drives: 2010 335i Join Date: Mar 2016 Location: Naples, FL iTrader: (0) Garage List 2008 BMW 335i E92 [0.00] 2001 BMW 740i [0.00]	anyone know how to remove the sos error after the retrofit
	Appreciate 0 Quote

12-09-2018, 12:12 PM	#39
ctuna Lieutenant General 1911 Rep 13,102 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Yes that is the standard fix . There doesn't seem to be any side effects from it. If you removed the TCU you will get and SOS error as that is where SOS resides. Also the switch in the FZD but I don't think most people change that out.
	Appreciate 0 Quote