Well, thats the same isn't it?

The only difference in TCUs is whether they are ECE or US models.
ECE = Assist over GSM, and optional Bluetooth cordless handset in the car.
US = Assist over CDMA, and no optional Bluetooth cordless handset in the car.
But the wiring (power, ground, ibus, microphone, audio) is identical.

As I said earlier: "simply change the BIT-II wiring to the TCU wiring."

Of course, always refer to the right wiring diagram.
Do not read USA diagrams if you have a Non-US market car.

The WDS shows all, very clearly.

No - a TCU module in a x5 could have the power on pin 1 and ground on pin 2

a tcu module on an x3 could have ground on pin 1 and power on pin 2

If you are saying the wiring for TCU modules are identical then i understand what i need to do, and as long as i look at ECE diagram in WDS and rewire to match that, i can get any ECE TCU module and plug it straight in.

I'm now looking for one of these (sourced form here http://www.bimmerboard.com/members/p...artNumbers.pdf)

European GSM based TCUs - won't work in US

TELEMATICS CONTROL UNIT GSM Jan-05 84116946991
TELEMATICS CONTROL UNIT GSM Mar-05 84106965055
TELEMATICS CONTROL UNIT GSM Sep-05 84106964113
TELEMATICS CONTROL UNIT GSM Jul-06 84106963758
TELEMATICS CONTROL UNIT GSM Nov-06 84109129850
TELEMATICS CONTROL UNIT GSM Mar-07 84109127894
TELEMATICS CONTROL UNIT GSM 84116946011
TELEMATICS CONTROL UNIT RFMD GSM 84106978533
TELEMATICS CONTROL UNIT GSM Jul-06 84106963758

TELEMATICS CONTROL UNIT GSM Nov-06 84109129850

WDS shows very clearly:

X5 TCU = power term30 pin 17 & pin 18, power termR pin 35, ground pin 36 & 54

X3 TCU = power term30 pin 17 & pin 18, power termR pin 35, ground pin 36 & 54

You may care to note that the WDS contains all the info you need.....

Hi

I am hoping to add bluetooth to an E46 that has not got it, nor has the cabling for it, by making up some cabling for power, ibus and audio via a mute box. I have an aftermarket Alpine media station head unit fitted.

I am in possesion of a 2005 TCU +SES module. It has a 54 pin connector. Does anyone know the BMW part number of the barebones connector so I can buy one and make up a loom? Else is a cheap loom with the 54pin connector available? I saw mention of a 25pin to 54pin adaptor, is there a BMW part number for it?

Also is the audio signal on pins 37/38 the caller's voice, and is it an amplified signal or line-level?

Jochen

Please feel free to call me an idiot but i still cant figure out WDS. Hopefully you will see i have tried . . .

I've selected E53, then selected Communication>Telecommunication>Basic Interface Telephone (Bit II) (SES Language-input system with BIT Basis Interface Telephone from 2003_03)

That shows a diagram with component U407

So i look up U407 and get Component and signal information>Components>U)Radio/interferance supression equipment>U407 Basic Interface, telephone>U407 Basic Interface Telephone (Fixed Mounting, siemens (cordless handset) from 2002_03)

But i cant find the pin out list for this.

When i search for the TCU (I01157) it comes up with Components>I_Components of outside manufacturer>I01157 Telematcis Control Unit (TCU_Everest) (without USA_LHD)

and then i can see a table of all the Pin assignments at plug connector X18500

Where can i go from here? The only pin out i can find for BIT2 is X4038

but that doesn't show "Basic Interface Telephone (Fixed Mounting, siemens (cordless handset) from 2002_03)" only "up to 2002_3

So shich plugs should i be comparing? X18500 and X4038 seem so different

X4038 - Siemens Internal (Eject Box) at pins 1,2, 5, 19, 20, 37, 38, 48
X18500 - Telephone, Internal (Eject Box) at pins 3, 5, 6, 32
I can work these back using the wiring diagram for A117 Eject Box, but that only shows the pins for BIT, and not diagram for TCU. BIT has 8, TCU has 4, happy to leave 4 disconnected but without colours for the TCU wires i dont know which wire from the TCU goes to which pins on the eject box

X4038 - Comunication Link TXD RXD and Sheild at 9, 10, 11
X18500 - NO SUCH CONNECTIONS
See attached picture, it doesn't go anywhere? Can i leave it off?

X4038 - Data Cable (Navigation Unit) at pin 28 and 46
X18500 - NO SUCH CONNECTIONS
See attached picture, it doesn't go anywhere? Can i leave it off?

X18500 - Night Light Signal pin 52
X4038 - no such connection
I can get this from the eject box, pin 3 (X4545)

Attached Images

  

The circuit diagram shows connector numbers, and also shows the connector pins, wire colour, wire size and wire function.
Just click the connector number for a full table.

Thats all the info you need.
You see the wiring and signals of the existing BIT2
You see the wiring and signals of the wanted new TCU

Simply transfer the relevant wires from the old to the new

Of course, some will be no longer required, and you may need to reassign some wires running from phone to the eject box.

But it is pretty straight forward.

Work in this order:
Ground
Ibus
Power
Microphone
Audio Out
Eject Box
SOS switch (if fitted)

That's all you need.

Hi Jochen - thanks for taking the time to reply. I've done all the wires i thought i needed, and now it comes up 'Activate Phone' on the nav screen correctly, but i'm unable to get the TCU to go into pairing mode.

Not for me it doesn't! When i look at the TCU wiring diagram it doesn't give me wire colours. So i have no idea how to give the TCU the 4 wires from the eject box it needs, when the BIT2 had EIGHT wires.

(see diagrams below)

Its only simple if you know how to do it.

Ground - done
Ibus - done
Power - done
Microphone - done
Audio Out - done
Eject Box - NOT DONE/CANT DO


Why do i need to connect the eject box anyway? I want to use bluetooth, i have no interest in pluggin in my phone?

Attached Images