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post #1 of 40 Old 03-14-2017, 04:45 PM Thread Starter
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2016 Versa SV radio swap - BT buttons and mic don't work

Hello,

Recently, I purchased an OEM Nissan head unit to replace the stock one that came in my Versa SV, with the goal to get Bluetooth Streaming Audio working. The radio came from a 2016 Nissan Sentra SV, and is the one with a color screen, without navigation. ALMOST everything works, including USB, Aux, as well as steering wheel controls for volume, source, next/prev (up/down), but the one thing that I'm having difficulties with is getting the Bluetooth features to work. The buttons for call send/end on the steering wheel do not work, and the microphone doesn't work either, making it impossible to actually pair my phone to the new stereo (even though I'm able to get to the part where it asks if the codes match when pairing).

One thing I noticed is, if my new radio is tuned to 540 AM and I hit the bluetooth buttons, I can actually hear bluetooth phone prompts and say commands, which led me to believe that there's a separate module somewhere in the car that the bluetooth buttons and the mic are hooked up to. I sort of figured that this was the case, as there is a connector that I was unable to locate and plug into the new stereo (I believe it's an 8-pin connector, could be wrong). Looking online at images, I found that the bluetooth module has this same exact connector.

My question is, where is this Bluetooth module located, and would it be a simple matter of unplugging the 8-pin connector from the module and plugging it into the new stereo to get the Bluetooth functions to work?
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post #2 of 40 Old 03-14-2017, 05:13 PM
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Bluetooth module is separate from the radio, located under the driver's seat or in the trunk depending upon the model/year. You likely need to change to the same module used by the Sentra (that matches your radio) but hard to say whether it will be plug-n-play as far as connectors go. There has been a fair amount of discussion and experimentation on stock radio swaps by other members, not sure anyone has ever had 100% success. Forum search should turn up those threads for you to read, should give some ideas and shed some further light on your options.
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post #3 of 40 Old 03-14-2017, 05:28 PM Thread Starter
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Quote:
Originally Posted by arudlang View Post
Bluetooth module is separate from the radio, located under the driver's seat or in the trunk depending upon the model/year. You likely need to change to the same module used by the Sentra (that matches your radio) but hard to say whether it will be plug-n-play as far as connectors go. There has been a fair amount of discussion and experimentation on stock radio swaps by other members, not sure anyone has ever had 100% success. Forum search should turn up those threads for you to read, should give some ideas and shed some further light on your options.
I did some searching around on here, but wasn't able to come to a definite answer. From what it seems like though, the bluetooth module is actually built INTO this new stereo, instead of being a separate module like the old one. Something tells me that, if I can find where this module is located, unplug that connector and plug it into the stereo, I'll have working bluetooth with the Sentra stereo though...

Guess my only issue now is actually locating the thing. I tried looking around in the trunk but couldn't find it, so I guess I'll have a look under the seat later. I tried finding a service manual for my model (16 Versa sedan), but couldn't find anything...

EDIT: I just confirmed, the Bluetooth module IS built into the Sentra stereo. It's just a matter of getting the Bluetooth buttons and microphone connected, somehow...

Last edited by tomiga; 03-14-2017 at 06:13 PM.
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post #4 of 40 Old 03-15-2017, 01:48 PM
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amc49 will probably weigh in pretty soon, he has a good bit of experience tinkering with the radios.

I really doubt there is any magic connector you are going to be able to plug straight in and run with it. How did it go installing this radio? Did some of the connectors fit? All of them? None of them? Any missing spots on the radio not plugged in? (Could be hard to tell if the connectors fit but have different numbers of pins).

If you search around there are some links to service manuals for versas up to 2014 in PDF format. I downloaded them and read through some of the radio info for my custom radio/bluetooth/steering wheel controls project (which is still in progress). There is good info in there about connectors and what each wire is for and so on. Based just on what I have heard/read from others on here you might end up locating the microphone analog wires and cutting/soldering them to the harness for your radio. You *might* get as lucky with the call/send buttons but those are not as simple as regular buttons, all the buttons on the steering wheel make up a resistance ladder sending different tiny amounts of current back to the body control module over just a couple wires. In order to map that to the sentra radio you would also need the service manual info for the Sentra your radio came from to see if it has the same resistance values set up for different buttons.

I think you stand a decent chance, sentra's sharing pretty much the same steering wheel as the versa in 2016. Most likely some splicing and soldering in your future but probably not more than a few wires and where there is a will there is a way. If you can find the radio wire harness pinouts in the versa service manual and the donor sentra and match them up you just might make it.
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post #5 of 40 Old 03-15-2017, 05:01 PM Thread Starter
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Quote:
Originally Posted by arudlang View Post
amc49 will probably weigh in pretty soon, he has a good bit of experience tinkering with the radios.

I really doubt there is any magic connector you are going to be able to plug straight in and run with it. How did it go installing this radio? Did some of the connectors fit? All of them? None of them? Any missing spots on the radio not plugged in? (Could be hard to tell if the connectors fit but have different numbers of pins).

If you search around there are some links to service manuals for versas up to 2014 in PDF format. I downloaded them and read through some of the radio info for my custom radio/bluetooth/steering wheel controls project (which is still in progress). There is good info in there about connectors and what each wire is for and so on. Based just on what I have heard/read from others on here you might end up locating the microphone analog wires and cutting/soldering them to the harness for your radio. You *might* get as lucky with the call/send buttons but those are not as simple as regular buttons, all the buttons on the steering wheel make up a resistance ladder sending different tiny amounts of current back to the body control module over just a couple wires. In order to map that to the sentra radio you would also need the service manual info for the Sentra your radio came from to see if it has the same resistance values set up for different buttons.

I think you stand a decent chance, sentra's sharing pretty much the same steering wheel as the versa in 2016. Most likely some splicing and soldering in your future but probably not more than a few wires and where there is a will there is a way. If you can find the radio wire harness pinouts in the versa service manual and the donor sentra and match them up you just might make it.
Here's what I was thinking, but I'm pretty sure this is completely wrong now:
The connector on the BT module looks the exact same as the one that goes to the radio. I thought that, maybe the BT module was connected in such a way that it just intercepts the steering wheel bluetooth buttons and microphone. It does appear that's the case to a certain extent, but there's no easy "plug and play" solution to fix that (figured that out after looking at the service manuals, and how the connectors are wired).

As far as how the radio install went, most of the connectors are there, but there are two that I couldn't plug into the new radio because they weren't there: an 8-pin connector and the connector for the XM radio antenna. The XM I could honestly care less about, I'm never going to use it and didn't expect it to work anyway. But, there's also a 32-pin connector which the old radio did have, but it looks to be wired up quite a bit differently. The 32-pin connector on the Sentra has pinouts for the rearview camera where the AUX pinouts on the old radio was, meaning that AUX probably isn't working either (untested as I'm currently using USB). Apparently, that's what the 8-pin connector does on the new radio.

So, while the new Sentra radio fits perfectly and mostly works, what doesn't work is:
- Backup camera (expected, my car doesn't have one). The radio does seem to acknowledge this though.
- XM, which was expected. Missing antenna.
- AUX (not confirmed, but I'm pretty sure this won't work).
- Bluetooth control buttons, but the other steering wheel controls do work
- BT Microphone
- BT Pairing (get to the point where it asks to confirm the pairing code, but can't say yes or hit the call send button, so the pairing fails).

What's surprising is, the audio quality actually sounds so much better than the Versa's stereo, which is actually really cool and was unexpected. But, to get the rest of the features to work, I think I'm going to just end up taking it to the audio shop nearby and have them see what they can do if I can't figure this out.
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post #6 of 40 Old 03-15-2017, 05:26 PM
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Detailed Service Manuals

Index of /FSM/Versa/2016 Versa Note

Link to the service manual for the 16 Note. This was posted for me in another post.
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post #7 of 40 Old 03-15-2017, 07:06 PM Thread Starter
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Quote:
Originally Posted by Alan_nc View Post
Index of /FSM/Versa/2016 Versa Note

Link to the service manual for the 16 Note. This was posted for me in another post.
The weird thing about the 16 Note service manual is, it seems to have the S/S Plus trim radios (with no USB, but with aux on the stereo itself), but doesn't have the SV radio (USB, AUX). So, I actually had to use the base audio part of the service manual from the Sentra as well, since the base (S trim) Sentra and the Versa SV both use the same radio/bluetooth module.
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post #8 of 40 Old 03-16-2017, 07:36 PM Thread Starter
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As a bit of an update, I found that it looks like I'll be able to get the hands-free system at least partially working. Using info I found online and verifying it with the service manuals, it appears that if I disconnect the Bluetooth module and connect the following pins on the connector, I should at least have all of the steering wheel controls working:
Pin 12 -> Pin 17
Pin 13 -> Pin 18
Pin 14 -> Pin 19

As I guessed, the Bluetooth module IS intercepting the steering wheel controls partially.

I also have the pins for the microphone and the AUX in. I believe it's possible to get everything working now!
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post #9 of 40 Old 03-16-2017, 10:50 PM
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Question

Quote:
Originally Posted by Alan_nc View Post
Index of /FSM/Versa/2016 Versa Note

Link to the service manual for the 16 Note. This was posted for me in another post.
Does anyone happen to know if the service manual is available for 2015 Versa.
It looks like the wiring on my 15 Versa doesn't match either of 14 or 16 model.
Why do they have to keep changing it every year ???


Edit: I think I have found it! Apparently Versa 2015 stereo has the same wiring as Sentra 2015, which is available.

Last edited by suhridkhan; 03-17-2017 at 01:59 AM.
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post #10 of 40 Old 03-16-2017, 10:57 PM
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Quote:
Originally Posted by tomiga View Post
As a bit of an update, I found that it looks like I'll be able to get the hands-free system at least partially working. Using info I found online and verifying it with the service manuals, it appears that if I disconnect the Bluetooth module and connect the following pins on the connector, I should at least have all of the steering wheel controls working:
Pin 12 -> Pin 17
Pin 13 -> Pin 18
Pin 14 -> Pin 19
As I guessed, the Bluetooth module IS intercepting the steering wheel controls partially.
I also have the pins for the microphone and the AUX in. I believe it's possible to get everything working now!
Can you please direct me to the online source you are referring to? How do you disconnect the bluetooth module?
Which year is your Versa? Mine is a 2015.

Last edited by suhridkhan; 03-17-2017 at 02:04 AM.
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