Adding Rear Seat Audio Module from a Sienna

I managed to get ahold of a Rear Seat Audio (RSA) module from a Sienna. This unit has an overhead console, LCD display, and using the remote, the back seat passenger can select their own Audio Source and can change stations or tracks. I believe the broadcasting for the IR headphones is located here as well.

I'll let you know how well this works with my package BC. If all goes well, I will mount this in the center of the ceiling just like the Sienna.

Nate

 

Okay, you ready? Follow along:

1. Sienna uses an RSA module that connects to the AVC-LAN (easy to wire to the Prius) and an RSR+, RSR-, RSL+, RSL-, and SLD pins that connect to the Sienna head unit.
2. I don't have a Sienna head unit, BUT: The Land Cruiser uses a MultiDisplay that is very similar to the Prius...
3. The Land Cruiser also supports an RSA unit that has all the same pin identification labels as the Sienna.
4. The Land Cruiser uses pins 14-18 on connector R38 for RSR+, RSR-, RSL+, RSL-, and SLD.
5. Connector R38 in the Land Cruiser EWD is the same connector as R5 in the Prius EWD.
6. Pins 14-18 are suspiciously empty on connector R5 of the Prius Radio.
7. Conclusion: I suspect that plugging in the Sienna RSA unit into the Prius Head Unit will work flawlessly if I follow the Land Cruiser wiring.

If this doesn't work, I'll likely put the item back up on ebay.

By the way, anybody have a DVD player out of a Land Cruiser? I bet it will work in the Prius...

Nate

 

Dan, device ID's aren't the problem; it's developers lack of understanding of how to use them. Here are all the device ID's that the Prius' AVC-LAN supports.

From the 2004 Prius Repair Manual:

110 EMV
120 AVX
128 1DIN TV
140 AVN
144 G–BOOK
178 NAVI
17C MONET
190 AUDIO H/U
1AC CAMERA–C
1B0 Rr–TV
1C0 Rr–CONT
1C2 TV–TUNER2
1C2 PANEL
1C6 G/W
1C8 FM–M–LCD
1D8 CONT–SW
1EC Body
1F0 RADIO TUNER
1F1 XM
1F2 SIRIUS
230 TV–TUNER
240 CD–CH2
250 DVD–CH
280 CAMERA
360 CD–CH1
3A0 MD–CH
17D TEL
440 DSP–AMP
530 ETC
5C8 MAYDAY
1A0 DVD–P
1D6 CLOCK
1F4 RSA
1F6 RSE
480 AMP

I expect the device will identify 1F4 (RSA) on the AVC-LAN and work perfectly.

You can see that it would make more sense for developers to use DVD-CH for DVD or CAMERA for Backup Camera; or CD-CH2 for the Ipod. I don't know why they don't.

(Coastal Dave, are you reading this?)

Nate

 

Yes, I think that's what it would look like if someone hooked up both the internal and external changer. However, the ipod2car doesn't work correctly; my guess is that it doesn't identify as CD-CH2 which is why it conflicts with Prii that have the built in changer.

We do know that the CAMERA input works on the Prius. I'll soon report back on the RSA module.

Nate

 

Here are the details:

-The module identified on the AVC-LAN.
-The module displayed all the correct information for each mode (station id, track number, etc).
-XM did not come up at all (in the rear). It was like it wasn't hooked up. Still worked in the front.
-The touchscreen now displayed a new button, "Rear Off". I could use it to turn off the RSA unit.
-The remote changed stations (or tracks) on the rear (and the front)

The problem? NO SOUND came out of the headphone jacks, just some static. I was hoping to obtain a base model radio (I have JBL) for some more testing. The issue is that the head unit is expected to transmit audio to the rear. I hooked these wires up the same way the Land Cruiser has it wired in, but there was still no sound. I am somewhat optimistic that I simply don't have the MUTE circuit wired in correctly, and the rear was being muted because of that. I haven't had much more time to work on this, I am waiting to get a base model radio to play with.

Anybody got one for sale?

I have two of these RSA units. If someone wants to buy one, let me know. I only have one remote, though, you'll have to get one off of ebay or something.

Nate