SP206 Pinout info, please

[GreenBravada]

SP206 pinout info, please

I found an ORANGE wire cut on SP206.
Located under passenger side rear seat.
Found a partial pinout for CDF, but nothing for AB. (below)
Note that I have no Light Green wire in this splice block

SP206

Dark Blue/White F (No E wire)
Tan D
Brown C
Light Blue B
Orange (cut) A

I'm guessing that the orange wire was part of the data stream from the OnStar module because it has been disabled by previous owner.





Dark Blue/White F (No E wire)
Tan D
Brown C
Light Blue B
Orange (cut) A


SP206

 

[Mooseman]

Found in my manuals. The manuals on Charm were useless for this specific item.

The link to my manuals is in my signature.

 

[GreenBravada]

I've downloaded EVERTHING you made available, but even when you sent this, it took me a while to find the word SP206. Cataract surgery this summer.
So, the orange wire goes to the OnStar (vehicle communication interface).
All the wires going into that splice block are connected to a single point.
Never quite understood how a data buss works and the signals get sorted, and I was a certified electronics technician, but back in the olden days when microprocessors were new.

 

[Mooseman]

You should see the new stuff like in my '21 Sierra. EVERYTHING is connected to what's called the LIN Bus. High and low lines that are split into nodes with a Serial Data Gateway Module thrown in there for good measure. These old trucks are easy.

 

[TJBaker57]

EVERTHING you made available, but even when you sent this, it took me a while to find the word SP206.

This may be a typo in the diagrams but here is SP 306

Information Bus — 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S Service Manual | Operation CHARM

Detailed repair manual for the 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S.

charm.li

 

[TJBaker57]

Never quite understood how a data buss works and the signals get sorted,

For this serial data bus there is no "sorting" of the signal. Every module receives every message. Each module even listens to its own message pulse as it sends it.

 

[GreenBravada]

This may be a typo in the diagrams but here is SP 306

Information Bus — 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S Service Manual | Operation CHARM

Detailed repair manual for the 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S.

charm.li

Thanks, TJ. That's the one I saw, too. Not the right one!

 

[GreenBravada]

For this serial data bus there is no "sorting" of the signal. Every module receives every message. Each module even listens to its own message pulse as it sends it.

Even in the 80's the world was already creepy. I was installing complex medical x-ray systems starting in 1982. The first microprocessors were coming in, and we had to program them by flipping toggle switches for memory address and data and flip another switch to write it. In tech school, we had to program a microprocessor using machine language. It took many precise commands to get it to light LEDs in a particular order. Actually kind of fun to find the least number of commands. Ancient history. I sound like someone telling about hearing the first radio broadcast.

 

[TJBaker57]

Thanks, TJ. That's the one I saw, too. Not the right one!

The lower sketch in the previous link is the data bus splice pack under the rear seat.

The upper sketch in the previous link shows the splice pack in the lower dash.

Utility/Van Zoning — 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S Service Manual | Operation CHARM

Detailed repair manual for the 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S.

charm.li

 

[GreenBravada]

The lower sketch in the previous link is the data bus splice pack under the rear seat.

The upper sketch in the previous link shows the splice pack in the lower dash.

Utility/Van Zoning — 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S Service Manual | Operation CHARM

Detailed repair manual for the 2003 Oldsmobile Bravada 4WD L6-4.2L VIN S.

charm.li

The splice pack I needed was SP206, not SP306.
SP206 is located under a flap of carpet right next to the OnStar module.
It's on the DataLinesSchem.pdf file Mooseman shared above, and I posted a section above.
Thanks for your help and attention, TJ.

 

[TJBaker57]

The splice pack I needed was SP206,

Per the zoning diagram any electrical ground, splice, harness, etc that begins with "2" is located in the dashboard, NOT the main cabin.

"SP206" is a typo.

 

[GreenBravada]

The SP306 you cited above and provided a diagram for is not the SP206 that I am working on. The SP that I am working on is next to the OnStar module and only has 6 pins with one unused opening and a total of 5 wires. Does SP306 have only five wires, TJ? I'm happy to discuss nomenclature with you, but it is irrelevant to the orange wire that I was asking about. Again, thanks for your help, but my question is answered and my problem is solved.

 

[TJBaker57]

The SP that I am working on is next to the OnStar module

orange wire that I was asking about

Onstar Module is VCIM

 

[GreenBravada]

Thanks, TJ. You were 100% correct and cited the documents to prove it. Don't know if I was being dense or just confused by the hodgepodge of manuals and schematics I have. I've worked with complex x-ray systems with cables running all over the room and to several different cabinets, so I am capable of following such things, but it must be a great advantage to have the actual factory service manuals for your exact year and model. Do you have a set to work with? From what I've seen, they go for upwards of $200. I'll study the ones I have and get better edumacated. ;-)

Thanks again for taking the time to see this through.

 

[Mooseman]

We have multiple sources for manuals online, including downloads of a bunch from my own site.
Need GMT360/370 Service Manuals? Get them Here!

Then there's Charm and Lemon which are copies of actual factory manuals.

 

[TJBaker57]

I've worked with complex x-ray systems with cables running all over the room and to several different cabinets, so I am capable of following such things,

I continuously struggle to follow these automotive schematics myself. I've gotten a lot better at it in retirement over the past 5 years or so. My experience outside of the automotive environment was primarily commercial HVAC stuff. There, everything is included on one large schematic. Much easier to follow what connects to what and see the big picture all in one place.