Nissan Bcm Serial To Pin Conversion To Ball
Thanks for the idea Richard.I called my service rep at Huber Cadillac and she had the tech print out the schematics. I am looking into it now, and have requested a more extensive list of drawings.So far, my findings indicate that the new steering wheel controls that include the answer and hang-up buttons would require me to get a whole new steering wheel in order to get the controls. They switched over their design with the 08 XLR group, so if you have an 08 you are already a step ahead of me. The steering wheels are all very similar (but with different PN's) between the XLR, CTS, STS and SRX.
The labeling of the center switch on the left of the wheel is different if you have the adaptive CC, so that may be part of it, but I am searching car-part.com for suitable replacements. The cadillac parts (wheel w/switches - 2585657, Air Bag - 25856638, and retaining nut - 11609658) are in the ball park of $1200.00, so I am looking into slightly used models for closer to $400.The 4 connectors to the 09 VCIM (PN 25990100) are wired the same as the 05.The inside rearview mirror has a different part number (PN 15911609). (the image on the left most button went from a white dot to a white phone - no functional difference however)I did not get the wiring info for the Body Control Module (PN 25879086) yet, nor have I figured out where the Bluetooth antenna (PN 15938939) is integrated into the car.
My suspicions are through the BCM, but I have to get the documentation to be certain.I will post pictures when I get everything figured out.Cadillac Tech,Would a steering wheel from an 09 CTS work on an 05 XLR? The nut descriptions I have are below. My thoughts are that the threads on the Steering Column are the same, but the wheel is either flanged or not, so the nut would need to be replaced with the steering wheel.05: NUT, STRG WHL (M14X1.5, 10THK, 27OD)(FLANGED)(8.917) PN:: NUT, STRG WHL (M14X1.5, 10THK)(NON FLANGED)(6.518) PN:11609658My other concern is the airbag itself, is there a specific impact force setting or something like that for the one in the XLR compared to one in a CTS, STS or SRX?Thanks,BenHEY BENWhere can one get a service manual like that? I have not gotten any more 09 info yet, but have had a chance to dig through my paper SM some more. Here is what I have found.The steering wheel may not have to be replaced. There is one inconsistency however that I think may just be a typo. Like most steering wheel controls, it is a resistor network set up so that when you press a button the voltage drops to a specific value.
The book says: 'these values allow the CD changer or BCM to identify which switch has been pressed and that class 2 messages are sent from the CD Changer or BCM to the appropriate component to perform the desired function.' The drawings indicate that Cruise Control information goes to the BCM and the audio controls including bluetooth feature buttons from the 09 go to the CD Changer.The good news. All the audio buttons have the same resistance values and send the same signal.
The voice button pressed and released still does nav voice commands, pressed and held for 2+ sec initiates OnStar bluetooth. And the down arrow is the same as the phone on the hook button which ends a call, rejects a call, or cancels an operation. (Note the functionality information of the 09 XLR SWC buttons came from the owners manual page 3-89.)The not so good news.
While the audio buttons align exactly the same between 05 and 09, the cruise control buttons have different resistance values and plug into different circuits on the BCM (05 - ckt 1039, pink, C4 pin E8; 09 - ckt 1399, green, C2 pin 58). This difference in pinning however is in the voltage supply and should not matter (05 it is ignition voltage, 09 it is RAP Relay Coil Supply Voltage). The different Resistance values and the fact that the 09 includes a Cruise Control Cancel button indicate that the BCM's function differently from an 05 to an 09. While this specific noted difference does not condemn the project to failure, it certainly makes me think of the ways it could fail, and the complexity that we would have to overcome to get it.So here we are, if we don't need a new BCM, and all we need is the new VCIM, we don't need to swap our steering wheel controls to gain the new functionality.
Nissan Bcm Serial To Pin Conversion To Ball Game
However if we need to swap our BCM, other issues may surface. (of note, when you replace the BCM you have to perform 3 steps: BCM Setup, BPP (Break Pedal Position) Sensor Calibration, and Program VIN.
All of these are performed with the Tech 2 and little information is provided in the Service Manual other than a brief description of them. For instance, 'The new BCM must be programmed with teh proper RPO codes.the tech 2 software will automatically prompt you with the RPO's available for the vehicle.' This begs the question, If I put an '09 BCM in my '05, will it allow me to add RPO codes from the '09 like bluetooth, or will it recognize that it is in an 05 and not even have it as an option?Well, just needed to vent a little and get it out there.
This is a mix of facts and assumptions I tried to make it pretty clear which was which, but only time will tell.Ben. Yesterday I went to pickup more printouts and sat down with the XLR tech there at the dealership.
We looked into the standard resistances in the Steering Wheel Controls (SWC) for all years of the XLR. The result from the computer is 04-07: 12.7kohm; 08-09:1.27kohm. So the chances of it being an administrative error are diminished, however when my car goes in later this month, he will measure the resistances and let me know what they are actually.I have compared the connections on the Body Control Module (BCM) between the 05 and 09 XLRs and while they are very similar one circuit has changed pin locations - indicating that there are differences.Mapping out the GMLAN schematics between the two, the Pins for the ACC module, Transmission Control Module, Electronic Suspension Control Module and Engine control module have all changed from the 05.
Nissan Bcm Serial To Pin Conversion To Ball Video
Not to mention the addition of the Headlamp Control Module that is new with the articulated headlights in 2006. The VCIM, BCM and Electronic Brake Control Modules pins are the same. Overall no change in funtionality of the system meaning the wiring and lines of communication bewteen components.
However, since the various modules are programed to coexist in each vehichle and work together. That is an aspect of the system that I harder to discern then a simple, 'yep the wiring is all the same so you should be good to go.' The logic and digital programming of everything is where any roadblocks are going to come up.The Class 2 bus (CAN bus) layout is also similar with notable changes being the Exhaust Tail Pipe Flow Valve Control Module (for the V - RPO LC3), the pin of the HUD changes from 1 to 6, and the drivers door window switch pin changes due to the new switch styles. No real impact to the operation of the system or the implementing of the new VCIM to get bluetooth.The new VCIM on the 09's has been moved from just forward of the right rear wheel well in the trunk, to behind the glove box mounted to the right side of the vehichle.The Bluetooth antenna clips on directly to the new VCIM and has no other wiring or mounting required.My overall assumptions are that it is doable as far as the hardware is concerned with one outstanding issue being the default resistance in the SWC. The only things to purchase in that case would be the new VCIM (PN 25990100) and the bluetooth antenna (PN 15938939). I believe the physical size of the VCIM has changed making the old mounting bracket not fit quite right (a little loosely I think), and the new mounting bracket is designed for a new location, so I would just add a little extra padding to make it secure.
All the wires/coax/connectors will still work back in the trunk.I am running out of literature on this. Pretty much the service manuals tell you the hardware side of things (like wiring and pinning of connectors) and give you a general overview of how the components function together. Nothing I have found in GM's documentation tells you what signals to expect as which terminals during normal operations (like Nissan's Service Manuals do) so I have a few things in mind but nothing too concrete from a manual.Apart from the whole side of things regarding the new VCIM communicating with the BCM and the rest of the car correctly, the signal path to get from the user inputs via the SWC to the VCIM goes to the CD changer to get onto the Class 2 Bus. I need to inquire after the part numbers of the CD changers to see if they have changed from 05 to 09. I want to say they have not changed and the translation of the SWC signal to the Class 2 bus is the same, I just don't know what that translation is. My hope is that it is simply a pass through and the VCIM can listen in on the signals, but something tells me that is not the case.
I think I will try to monitor the Class 2 bus line with my multimeter (via the Data Link Connector pins 2 - Class 2 Serial Data, and 4 - Ground) when I use the steering wheel controls and see what happens.I do have more pictures and schematics that I will post at a later time - one being when this is either figured out or put to rest.The long and short of it could be as simple as buying the new VCIM and Bluetooth Adapter and plugging them in to try it. If all the modules still play nicely with each other then we are good to go. If the steering wheel controls have changed their reference values or we need to start swapping out other modules, then it may not be worth the hastle and the best option would be to remove the EVIC in preference to an after market product like the BlueStar kits mentioned above.Ben. Had the car in the shop today and the tech measured the steering wheel control resistance for me. The service manuals for 04-07 all incorrectly report a resistance value of 12.7Kohm when the tech verified mine to be 1.27Kohm - the same as in the schematics for the 08 and 09 steering wheel controls.I am under the impression that the only thing that would prevent the new onstar module from functioning properly would be in some of the other features (aka new signals for a crash from the BCM or something of that sort).I see no obvious reason why the bluetooth features of the new module would not work if put into older versions of our car. All of the human interface aspects of the new module are capable with components currently installed on our cars.
The manuals would not cover operation and some of the symbols on the buttons are different or they are in a slightly different place - but they are there.It is not my intention to purchase a new module and antenna to give this a shot. Yet.But if I were going to do so I would need the following parts avaliable from:25990100 - VCIM - $2939 - Bluetooth Antenna - $27.80Ben. In reading the section on bluetooth operation from the 09 owner's manual. It states, 'Talking Mouth Button (Voice Recognition): Press and release to initiate voice recognition for the Navigation System. See Voice Recognition on page 4-74 for moreinformation.Press and hold Talking Mouth Button for longer than two seconds to interact with the OnStar® or Bluetooth® systems. See OnStar® System on page 2-42 or Bluetooth® on page 3-77 for more information about these features.' In my car, pressing the voice recognition button momentarily, and pressing and holding it for two seconds provide indistinguishable results.
But I don't have the bluetooth enabled VCIM, so who knows if it will produce a hick-up. The signals pass through the CD Changer not the BCM, and the CD Changer then passes the signal to the Class II lan and on to the VCIM. Looking at the CD Changers, they are the same from 2004-2008. I don't know about 2009, I have no data.Something needs to be programmed. With any luck it will all work out. Let me know how it goes.Ben. I just ordered the VCIM and antenna.
I'll let you guys know how it goes.I believe the key is getting the bluetooth option assigned to the VIN for the car then having the tech program the unit for the car. My tech did not know how to get the feature assigned to the VIN.Some Dodge guys, when adding steering wheel controls, had to have it added to their vin numbers as an option that the vehicle came from the factory with. Their forums said that they simply called the dealer and had them add the code to the vin. I have no idea what they actually have to do.Another problem I can see is that the RPO code for the bluetooth was not an option for the 04-08. Don't know if it is doable or how to accomplish it, but I believe that is the last important step for the car to recognize the new equipment.Any update from your end?
I believe the key is getting the bluetooth option assigned to the VIN for the car then having the tech program the unit for the car. My tech did not know how to get the feature assigned to the VIN.Some Dodge guys, when adding steering wheel controls, had to have it added to their vin numbers as an option that the vehicle came from the factory with. Their forums said that they simply called the dealer and had them add the code to the vin. I have no idea what they actually have to do.Another problem I can see is that the RPO code for the bluetooth was not an option for the 04-08.
Don't know if it is doable or how to accomplish it, but I believe that is the last important step for the car to recognize the new equipment.Any update from your end?When going to the dealer, I do not doubt this is the experience you will have. I had a similar issue with my GMC Yukon Denali where I had upgraded to GM 20' wheels and since they didn't come with the truck and didn't have a RPO code for them they didn't know what to do with my truck - so I feel your pain.With that said, you can just order any part you want and stick in in your car and it has nothing to do with your VIN in terms of functioning. Just plug in a Tech2 and program it and its fine. Now whether you can find a dealer who will do this is a different story - many will, many won't (as I found). Ultimately, I just ended up buying my own Tech2 since I just wanted more control over the GM cars I own.As for an update - I placed the order for the parts the day I posted my message about it, but they are backordered and I'm still waiting for them.
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