Retaining SWC Volume Controls after radio upgrade?

They make a wiring adapter for the application that just plugs in.

For this vehicle, the usual solution is an interface module such as:

Axxess ASWC-1, PAC SWI-RC, iDatalink Maestro, or the radio manufacturer’s matching SWC interface.

If the car has factory amplified audio, navigation, HondaLink, rear entertainment, or Elite trim features, the iDatalink Maestro route is often the better choice because it is designed to retain more factory functions than a simple SWC adapter. Please let me know what happens.

I tried the rR2 module without success. Contacted support and they told me the 2016 Pilot has no compatible module. That they never worked on getting firmware for it. Had to return the module back.

Does the company that made the radio have any kind of solution? What kind of radio is it with model number and I will look it up for you.

It's a Pioneer Dmh-wt8600nex

The key point is that the Maestro RR/RR2 is probably the wrong path for this 2016 Pilot, especially since their support already confirmed they never built compatible firmware.

I would do this next:

1. Do not assume the required wires are at the main factory radio plug. Check the 32-pin hands-free/Bluetooth/audio module connector if your Elite trim uses that setup.

2. Look for the steering wheel control signal wire and SWC ground/reference wire. On many Honda setups, the SWC signal wire is commonly green/red, with black used as ground/reference, but confirm by pin location before connecting anything.

3.With the connector plugged in, back-probe the suspected SWC signal wire with a digital voltmeter. Press volume up, volume down, mode, etc. You should see the voltage or resistance value change as each button is pressed. If the value changes, you found the SWC circuit.

4. Once the correct SWC signal and ground are confirmed, connect them to a compatible universal steering wheel control interface such as an Axxess/Metra or PAC-style SWC module that supports Pioneer radios. Then run the module programming procedure for Pioneer.

5. Make sure the Pioneer wired remote input is fully seated. Most Pioneer units use the 3.5mm wired remote input, and a poor connection there will make the SWC module appear dead even when the vehicle-side wiring is correct.

Let me know how it goes

Will do. Thanks

You are welcome.

One more thing, the 32pin connector's location. Is it under the glove box, at the rear of the car or under driver's side?

No problem, start behind the radio and center stack; next check under/behind the radio cavity; then glove box/passenger-side HFL area. I would not look in the rear of the vehicle first.