Technical Comfort control valve

[bill2b]

A727 794 1328412080

Does anyone have any info or diagrams regarding the "Brown box" behind the centre console with 2 plugs into it?
When you do a search for the number it comes up as "Comfort control module" and you only get them for sale but no info.
We have even seen the engine bay fuse box described as a "comfort control module"?
Its the Brown box we are interested in though.
Thanks

 

[Anthony489]

Hi

Comfort is sometimes a slight mistranslation of "Convenience".

A search on just 1328412080 brings up various secondhand ones, if that's what you need. Descriptions vary, and I have found in the past that sellers descriptions for used parts are often vague or even completely wrong.

I suspect the brown box you refer to is one used in the earlier vans (X244 2002 to 2006) and is most likely to be for controlling central locking, which maybe wasn't part of the preceding X230 design and had to be an "add-on". In the most basic form, turning one key locks all the doors. Later types added radio remote control from the key fob.

Sorry, I don't have any more detailed information.

 

[bill2b]

Hi

Comfort is sometimes a slight mistranslation of "Convenience".

A search on just 1328412080 brings up various secondhand ones, if that's what you need. Descriptions vary, and I have found in the past that sellers descriptions for used parts are often vague or even completely wrong.

I suspect the brown box you refer to is one used in the earlier vans (X244 2002 to 2006) and is most likely to be for controlling central locking, which maybe wasn't part of the preceding X230 design and had to be an "add-on". In the most basic form, turning one key locks all the doors. Later types added radio remote control from the key fob.

Sorry, I don't have any more detailed information.

Thanks Anthony
We certainly don't need another one, I ordered one off FB marketplace sadly he took the money but has not sent it yet, in the end we got one from a local scrappy, fitted it and same problem. as soon as we connect one of the plugs to it fuse 18 blows ? Its a long running story, originally because our coolant selector valve failed so it all had to come out now we have a multitude of electrical issues. (I have had 2 automotive electricians out (at least 8 hours total) and neither has solved the problem, I ended up buying a drivers door solenoid and the other brown boxes but its still an issue.
The new brown box can be connected up to one plug and the van starts but as soon as you connect the other one fuse 18 blows, not sure why it should be blowing fuse 18. I have seen in various places that it has something to do with the Air con compressor but Our air con has not worked for many years.

 

[Communicator]

If you are looking for diagrams of the internal circuitry, then unfortunately it is another proverbial "black box". I have been curious as to the precise location of this unit on my 2006 x244, but have failed to spot it when carrying out other work.
I am attaching pdf copies of appropriate eLearn drawings showing the external wiring connections, in the hope that they may help.

At least I now know that I am looking for a brown box.

These my library copies. Please ignore the note in red at the LHS of drawing E3040, which relates to the connections added by me for a dash mounted lock/unlock switch on my vehicle.

 

[Communicator]

Hi bill2b,

I have just seen your post #3. I have 7.5A (brown) fuse F18 in engine bay fusebox, as being associated with the Fiat key code receiver??? and the main injection relay. If your vehicle is 2.8 JTD please post as to whether metal cannister or UFI (green????? mine's all black) fuel filter, and with/without EGR, I will post appropriate drawings. Otherwise you may wish to follow the following link to an online version of eLearn, where some of the diagrama are obscured. Link here.

 

[bill2b]

Hi Communicator
No idea re the colour of the filter (or if it has an EGR tbh) will get out and have a look shortly. One thing I can confirm is that it does not have a factory fitted immobiliser so we can scrub that from the list of possible problems. Me and both electricians did spend a long while looking for it but it does not exist. The keys have a little transponder in them but take the transponders out and the van still starts. There is no plastic aerial round the ignition and no box on the steering column. Drove us mad hunting for it lol
This is the box I was talking about, behind the passenger glove box. With the left plug fitted and a new fuse in F18 the engine runs, connect the right hand plug and the fuse pops and the engine wont go (The lock light comes on though, rather strangely considering the lack of immobiliser?)
Also the central locking and e windows don't work.
I do wonder if its an earth somewhere and considering the whole dash has been out thats a possibility.
I will let you know re the fuel filter and egr, thanks for the diagrams

 

[Communicator]

Many thanks for the photo. On my vehicle there is a grey box, with what appears to be a single connector behind the glovebox. I have failed to locate any other module with unknown function.

 

[bill2b]

Many thanks for the photo. On my vehicle there is a grey box, with what appears to be a single connector behind the glovebox. I have failed to locate any other module with unknown function.

I think our setup is a bit rare, most of the ones I found in the scrappy had them like yours. My filter is sort of White and metal, not sure where the EGR is

 

[Communicator]

Attached are description of EGR system from eLearn, plus engine management diagrams as promised. The file E5050-2a is surplus if no EGR.

 

[Anthony489]

Hi again

Thanks to Communicator’s diagrams, I can see that the brown “Convenience“ unit M135 runs both central locking and electric windows. The left hand connector A is mostly associated with the windows, and the right hand connector B (the one that gives you problems) is associated with central locking.

Fuse F18 in the engine bay fusebox B001 has a permanent live feed and drives two separate things. The fused feed from F18 emerges at Pin 23 of fusebox connector A via a Red/Yellow wire, then links back in to Pin 12. From here it drives the live end of the coil for Relay T09, with the other end switched by the ECU. The contacts of Relay T09 drive fuses F11, F17 and F22. All three of these fuses are associated with the Engine Control Unit (ECU), so if F18 blows nothing much engine-wise will work !

The fused feed from F18 also emerges at Pin 2 of Fusebox connector C via a Grey/Blue wire, which goes off to drive the Immobiliser Code Receiver M020 (if fitted).

Neither of these two loads draws much current, so if F18 (7.5 Amps) blows it indicates an abnormal overload or short circuit somewhere, or a high drain load like a motor connected when it shouldn’t be.

I suggest that you place temporary 3 amp fuses in series with the Red/Yellow and Grey/Blue lines, and temporarily replace F18 with a 10 amp one. Plug in your “problem” connector and see which of the two fuses blows. This will narrow down the fault location. While you are at it, check for any odd non-factory wires that “someone” may have spliced in.

I notice that the dashboard “Padlock” light E050 has a permanent live feed on one end from F37. This means that if the other end (Grey/Blue wire) is also live, the light will go out as it now has the same voltage both ends. If the other end is open circuit, the light will also be out. If the other end is grounded (e.g. by the code receiver electronics) or connected to a low resistance unpowered circuit, the light will come on. If you see the light come on after F18 has blown, I am suspicious that it may be the last example.

The schematics show no obvious interconnection between the Windows/Central Locking and the Code Receiver, so the Fuse blowing is still puzzling. I suggest you check that the Code receiver hasn’t simply been removed without making sure that its connections are properly insulated. I also suggest you check that there isn’t some sort of aftermarket immobiliser that has been fitted, as (to put it politely) these fitments aren’t always to the standard they should be.

If you want to check earths, use a test meter on the ohms range to check for low resistance from the body/chassis to the connection of interest. This must be done with the ignition key of off, i.e. nothing powered up.

Finally, be deeply suspicious of any non-factory wiring joints where someone may have mistaken wires. The same colours are re-used several times over e.g. the two instances of Grey/Blue wire mentioned above.

Here are the Elearn descriptions for Central Locking and Electric Windows:

244001755 - E3040 CENTRAL LOCKING OPERATIONAL DESCRIPTION

Operational Description

ABI control unit (electric window/door lock) M135 manages the vehicle door lock/release system. The control unit is supplied:

• directly from the battery: via a connection between pin 8 connector B of M135 and pin 11 connector B of optional junction unit B101, protected by fuse F38, housed in optional junction unit B101;
• key operation: via a connection between pin 7 connector B of M135 and pin 3 connector C of optional junction unit B002, protected by fuse F35, housed in optional junction unit B002;

Control unit ABI M135 receives and sends the following signals from connector B:

• pin 15 : input from short-circuit junction D097G - pin 6 - of door lock signal;
• pin 16 : input from short-circuit junction D097F - pin 6 - of door lock release signal;
• pin 4 : send door lock release control signal to short-circuit junction D097F - pin 1;
• pin 13 : connection to earth C015.

Short circuit junction D097G manages the door lock signal. The closure control is received at pins 8 and 7 from front door locks N050 and N051 respectively - pin 4 -. Pin 1 receives a door lock signal from control unit ABI M135 that distributes to door locks N051, N050 and N054 respectively from pins 2, 3 and 4.Short circuit junction D097F manages the door lock release signal. The opening control is received at pins 8 and 7 from front door locks N050 and N051 respectively - pin 3 -. Pin 6 receives a door lock release signal from control unit ABI M135 that distributes to door locks N051, N050 and N054 respectively from pins 2, 3 and 4.Front door locks N050 and N051 are connected as follows:

• pin 5 : earth connection C020;
• pin 3 : earth signal transmission for door lock;
• pin 4 : earth signal transmission for door lock release;
• pins 1 and 2: door open/close motor power supply.

Double door lock N054 receives a motor control power supply for door opening/closure from short-circuit junctions D097.

244001769 - E3050 FRONT ELECTRIC WINDOWS OPERATIONAL DESCRIPTION

Operational Description

The electric window system is managed by control unit M135 (ABI). The control unit is ignition-operated - pin 8 connector B - and protected by fuse F35, housed in under-facia junction unit B002. An ignition-operated power supply is distributed from short-circuit junction D097E, to control unit M135, and also switches H044 - pin 2 connector A and B - and H050 - pin 2 -. Control unit M135 is connected as follows:

• pin 8 : raise control for left window motor N060;
• pin 9 : lower control for left window motor N060;
• pin 11 : lower control for left window motor from switch unit H044 - pin 3 connector A -;
• pin 10 : raise control for left window motor from switch unit H044 - pin 4 connector A -;
• pin 5 : lower control for right window motor from switch unit H044 - pin 3 connector B -;
• pin 18 : raise control for right window motor from switch unit H044 - pin 4 connector B -;
• pin 2 : lower control for right window motor from switch H050 - pin 3 -;
• pin 6 : raise control for right window motor from switch H050 - pin 4 -;
• pin 1 : raise control for right window motor N061;
• pin 3 : lower control for right window motor N061;

Controls H044 and H050 come with internal lighting that comes on when the side lights are turned on. The side light activation signal comes from control panel H090 - pin 12 connector C - and is distributed from junction D097E to the appliances. A light activation signal reaches control panel H090 - pin 2 connector A - from a line protected by fuse F24, located in under-facia junction unit B002. Control unit M135 receives power directly from the battery at pins 15 and 16, from a line protected by fuses F47 and F48 located in optional under-facia control unit B101.

 

[bill2b]

Wow, what a reply. Guess what I will be up to tomorrow?
many thanks, really appreciate it