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D2B Fiber Optics for PSE.. 00 S430

6897 Views 15 Replies 4 Participants Last post by  Peter Guenther
Hi guys, I just found this forum.. I purchased an elimiator cable and V60 BT puck.. but I have no power to it.. I took trunk apart and found the factory PSE and VR were not connected from factory.. they had the factory tape on them still.. I connected them but there are two F/O cables that I don't know what to do with.. TELE LINE IN and VR OUT.. Obviously they are to the D2B so they need to be plugged in to get this to work.. but I have spent hours now searching this site and there are no posts reguarding this! I am blown away.. I have seen several posts refering to the Phone Bulletin, but it simply speaks about making a loop but offers no information what so ever on doing this or what I need.. Do I need connectors? How do I loop this? Also my Star machine doesn't recognize the PSE until this is done, so I am stuck here.. thanks for any help.. I am so suprised I haven't found anyone else with this problem, I've found multiple mentions of the two cables being loose from factory but nothing on connections.. even tried searching for D2B loop, with no luck..

Thanks! My head hurts!
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The fact that the PSE and VR module were not connected at all explain a lot of the problems you have been explaining in other posts.

If you go to the phone bulletin for your car at Install Bulletins/S 00.pdf Fig. 8 shows you exactly where to plug the fiber optic connectors into the PSE. Those will be the "Tele Line In" fiber optic cables, which terminate in one connector. The connector on the end of the fiber optic cables will go into the side of the PSE, at the arrow labeled "D2B connector."

While the bulletin isn't as specific regarding the Voice Control, if you inspect the VCM (or VRM - Voice Recognition Module) you will see the receptacle for the fiber optic connectors as well. That's where your "VR out" fiber optics cables go.

Also be sure the 25-pin connector is plugged into the PSE, and into the plug near the PSE shown in Fig. 8. Also plug the separate 15-pin connector (Fig. 9) into the Voice module. The 15 pin connector for the Voice module is NOT the 15 pin connector coming from the Y-connector on the PSE. The 15-pin connector from the PSE (which has only 14 active pins) goes to the linear compensator. See the comment on the linear compensator below; you need not connect the 15-pin connector that pigtails out of the PSE (in fact, if you buy a Universal PSE it will not have the "Y" connector at all; just a 25-pin connector).

If you follow those steps, you will have established the physical loop the way it should be. With the required fuses in place, and with your cable eliminator cable and V60 puck in place, you should get power to the system; and your tech should be able to program the COMAND for the equipment.

I disagree that the phone bulletin simply talks about making a loop. It is the very bulletin used by the installation techs who installed the phone systems at the point of entry into the U.S. - while the black & white ones aren't as good as the color ones for later models, they should get you through it. You may have to study the photos a bit, and follow the text carefully.

It is obvious that a prior owner has messed things up for you. Nothing about your current equipment is standard. I suspect he had some 3rd party add-on for a phone system, and had disconnected the OE system; that would explain the extra wiring in your console, and the current state of the OE in your car. I suggest starting as if there were NO equipment installed, and work your way through. Keep in mind that you do not need the antenna switch or the linear compensator. They go to the external antenna in your rear bumper, and it is not used in a Bluetooth system. It won't hurt to leave them connected if they are - but if they are completely missing, they aren't necessary.
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I have been trying to respond, but had some problems with the site.

It is strange that with all of the connectors present and with the PSE and VCM present, that all of the lines were not connected properly. When I worked on my '00 9 years ago, they were.

To what are the ends of the fiber optics cables going to the PSE and the VCM connected now? In a fiber optic daisy chain, a lead would go from the fiber optic controller (your COMAND), possibly through some other components, to the PSE; into the PSE then back out of it, and then into the VCM and back out; and the line coming out of the VCM would then connect to another component.

It may be (and this is a GUESS on my part, since I have not seen the f/o in my '00 for 9 years) that the "Tel In" labeled line goes to the input side (red raised end on the 90˚ connector) on the PSE; that the white side lead then goes from the PSE to the VCM red side; and the VCM white side then goes back to the cable labeled "VR out." That would create a daisy chain. It would use all of the f/o lines.

BTW, the '01 phone bulletin is a little clearer, and has the f/o loop diagram. The '01 bulletin differs mainly where it shows installation of a VCM stalk, which your car does not use.

The splicing to the "Tel In" and VR Out" would be done with single inline splicers - inexpensive plastic components the dealer should have.

A more certain way would be to look at a '00 that has its phone system untampered with. Sorry, I just cannot recall just how they were connected in my '00.

I agree, upon review, that the '00 phone bulletin could be more clear on this point; your additional explanation that you have plugged in the 90˚ and the straight connectors helps, as does your photo. It seems to me that when the PSE and VCM were put into place, and the f/o cables that came with them as part of the installation kit were installed, whoever did it never spliced those kit cables into the two loose leads in your picture (or, alternatively, they removed the splicers to take the PSE and VCM out of the loop). So it begs the question asked above: What are the kit leads (with the 90˚ and straight connectors) connected to at their other ends?

I would almost bet, to nothing.
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You are not screwed - don't give up. Check the phone bulletin for an '01 or an '02 for the fiber optic diagram. However, you're not quite following what I am saying.

The two wires in your photo that are not connected (the Tel Line In and the VR Out) go to the fiber optic controller (your COMAND unit - possibly via other equipment). They are present specifically to be able to add other equipment to the fiber optic loop. When the PSE and VCM were installed, they came with two cables each that terminate in their respective 90˚ and straight connectors.

I have a suspicion that your PSE and VCM may be plugged into their respective 90˚ and straight connectors - but at the other end of those leads, they are connected to nothing.

To complete the loop and get your PSE and VCM into it, I believe that the Tel Line In lead must be connected with a single-line splicer to the input side of the PSE's leads. The "VR Out" would be connected to the output side of the VCM's leads. And the PSE output should be connected to the VCM's input side - spliced.

I could be entirely wrong - so other than that, once again I suggest looking at a properly functioning '00 model, and being sure your leads are connected the same way.

A D2B splicing connector looks like this:


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Wow, I an glad you found that! Prior owner had indeed screwed it up, but not in the way I thought he might.

You're better off with the Autosense PSE than the Startac - it passes caller ID information. My old Startac wouldn't do that.

We'll appreciate the writeup. I'll annotate a link to it in the How-To Guide.
The cars come from Germany with the basic fiber optic harnesses in place, but without the handsfree electronics. The PSE, antenna coupler, linear compensator, and cradle (for systems using one), and the VCM, if ordered, were installed at a preparation facility at the Port of Entry in the U.S. before the cars were shipped to the dealers.

The PSE and VCM kits each also had short fiber optic harnesses - the ones ending in the 90˚ connector and the straight connector that plug into the PSE and the VCM, respectively.

I have no idea why a car would have that equipment installed and the short harnesses left disconnected from the main harness, but apparently that was the case with yours. No tech had completed the fiber optic "daisy chain" the phone bulletin discusses.

But the real curve ball to me was the phone system's RJ 45 connector in the console being replaced by one for an entirely different system.
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