Steering Wheel Control issue after radio swap

markohio said:

Not sure if this helps. I had a Sony Carplay head unit installed in a 2017 Nissan Versa S Plus at Best Buy. They tried installing the same steering wheel interface and could only get volume to work. They ended up installing a Maestro - Universal Analog Steering Wheel Interface and got almost everything to work. Volume, Source, Radio/Track Seek. Phone answer works as long as Carplay is active. Not perfect, but better than before.

Click to expand...

So did the "call cancel" button ever work since the "Maestro" was installed?
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I have installed a Boss head unit into a 2017 Nissan Versa S

• I used a [Maestro] {ACC-BT-NI1} jumper plug for the BT module bypass in the trunk.
• I used a ControlPRO 2 {SWI-CP2} by [PAC] and their web instructional guide.

- connected SWC/SWI "Analog 1,2 & Ground" pins 6,16&15 as directed along with traditional power and speaker wires for both devices on the 20 pin car stereo harness connector.
- set dip switches as directed for specific car year and model and stereo brand.

The Source, Seek +/-, the Volume +/- and the Call Start buttons work as expected, (a little different than factory but acceptable).
- I see the SWI light flash green (from its resting red power indicator light) letting me know that the button I press is triggering it, it in turn, triggers my function on the radio, and the function I expect.

BUT

Though all others will, the Call Cancel button will NOT trigger the SWI to flash green, so I don't expect, and do not get, any response on the radio.
-The call cancel button worked before the aftermarket unit so I suspect the issue to be in the voltage translation between the output of the steering wheel function button and the expected interface in the SWI.
- I DO see an open lead condition when "call cancel" is not depressed and a constant resistance when depressed (I was in a hurry just confirming condition change and constant so didn't record.)

Does anyone know of an electrical diagram I can get my hands on for 2017 Nissan Versa S, so I can test the individual resistors ohms impedance and verify proper voltage output from the steering wheel button presses?

As far as the SWI

• I have been unable to connect a PC {windows} via USB (nothing recognized by anything)
• I attempted the manual (1 pushy button, 1 flashy light) programming process and it makes no difference, so I reset to default as per instructions.

Another issue, after driving for a day or so, the "seek +" randomly triggering from somewhere and a tuner up signal and the head unit does its job and just goes on surfing. [Has anyone had this one]?

Does anyone know where to find a chart or diagram for the actual meaning of what on and off for the 8 (car) and 4 (head unit) dip switches actually do on the "ControlPRO 2 {SWI-CP2} by [PAC]"?
- What their values are and expected input/outputs per setting?

If I am able to figure out how to interface with PC, or find a better arrangement for dip switches or programming, can this resolve my issue?

Is the Versa just a Cursa and I'm just stuck with no call cancel button?

Thank you anyone for your feedback and/or productive input/knowledge resource direction.