[phpBB Debug] PHP Notice: in file /viewtopic.php on line 988: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Moscow' for 'MSK/3.0/no DST' instead
[phpBB Debug] PHP Notice: in file /viewtopic.php on line 988: getdate(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Moscow' for 'MSK/3.0/no DST' instead
SolaraGuy.com • View topic - OEM 1997-2002 Sienna Steering Wheel Audio Control Install
Non-tutorials will be deleted.

OEM 1997-2002 Sienna Steering Wheel Audio Control Install

OEM 1997-2002 Sienna Steering Wheel Audio Control Install

Postby minig646 » Mon Feb 23, 2015 7:36 pm

This was a project I've been thinking about doing for a long time. Finally finished and it looks and works great! Probably about $70 all in. Forgive the worn steering wheel- I'm sure a lot of you guys have the same issue!

Image

It involves some rare parts, and is not for electrical novices. Soldering experience is a must, and a donor car at your local junkyard will save you a ton of hunting.
What you need:

~An aftermarket headunit, name brand preferably.

~Sienna Clockspring (the solara clockspring doesn't have enough pins. Take the whole steering wheel if it matches your interior! Save as much wiring as you can.)

Image

~Sienna Audio Controls (Again, save as much wiring as you can)

Image

~Sienna Horn Bracket

Image

~2-pin plug that goes into the back of the Sienna head unit (not 100% necessary)

Image

~Axxess ASWC-Toy-Lex Steering wheel control interface (discontinued and tricky to find- a universal one will NOT work)

Image

Steps:

1. First you need to remove the airbag and steering wheel. Be safe. I'm not going into detail here, there are other tutorials for this.

2. Disassemble the sienna horn bracket and grind the rivets that hold the side remote bracket onto the horn bracket. This will be transplanted onto the solara horn bracket- as you can see, the sienna bracket won't fit in the solara steering wheel. That's the first major challenge with this install.

Image
Image

3. This is how I attached the remote bracket from the sienna to the solara horn bracket. Be creative, it takes trial and error and lots of test fits to get it right and depending on your fabrication skills you may take a different approach.

Image

4. The airbag connector is a different shape, but the wire colors and functions are the same- so cut the yellow connector off the solara clockspring and solder it onto the sienna clockspring. Blue to blue, yellow to yellow. This splice MUST be soldered and properly insulated- obviously.

5. The wiring from the remote is:
Black: Switched 12V source
Blue: Ground
Yellow & Green: Signal wires

6. Remove the black and yellow wires from this connector on the sienna clockspring by extracting the the pins. Insert them into the corresponding connector on the solara clockspring. The solara connector is the same but has two open slots. This is how you remove the pins:

Image

7. Remove the black and yellow wires from the black connector on the other side of the sienna clockspring. These are connected to the yellow and green signal wires from the remote. Insert them into the corresponding connector in the solara. It will have two open slots for you.

Image

8. Ground the blue wire from the remote somewhere inside the steering wheel.

9. Now all the remote needs is 12 volts. The horn bracket is the only good 12V source in the steering wheel, and it doesn't turn off with the key so this option will kill your battery. This is the second challenge I faced. My solution was to rewire the horn at the fusebox under the hood so it loses power when you take the key out. I tapped into a switched 12V source from the interior fuse panel (I used the windshield wiper fuse, cigarette lighter fuse would also work) and ran the wire through the firewall to the engine compartment fusebox. Use fairly thick wire, as the horn draws about 4 amps. The result of this is that your horn and remote will lose power when the key is out.

10. I then used a blown fuse (you can make your own- figure it out) and soldered that wire to it, and inserted it in place of the horn fuse:

Image

Now your remote should have power and ground. If you need your horn to work without the key for some reason, you can stick your old horn fuse back in and it will work normally.

11. Solder two extension wires to the yellow and black signal wires coming from the clockspring, and make the wires long enough to reach behind your head unit. Feed the wires through and solder them to the plug you took from behind the sienna head unit. This plug plugs into the Axxess interface kit. If you didn't take this connector, just cut the connector off of the Axxess interface and solder the wires straight on. If you get the two wires switched it won't work- so be prepared to swap them if your test run is unsuccessful.

12. Follow the instructions that came with the Axxess kit and reassemble everything. Mine worked on the first try! All buttons work.
2000 MR2 Spyder- SOLD
2000 SEV6- TOTALED
1999 Supercharged SLE V6
User avatar
minig646
Regular SolaraGuy Member
Regular SolaraGuy Member
 
Posts: 210
Joined: Mon Jul 06, 2009 10:27 am
Location: Philadelphia, PA

Re: OEM 1997-2002 Sienna Steering Wheel Audio Control Instal

Postby corlon » Sun Mar 08, 2015 8:08 pm

sweet.i was so hard up for steering wheel controls for audio I put a switch on the cruise buttons to go back and forth (only 3 functions though). I like your idea much better. junkyard here I come.
NiCe
User avatar
corlon
SolaraGuy Driver
SolaraGuy Driver
 
Posts: 788
Joined: Mon Nov 26, 2007 11:26 pm
Location: midwest

Re: OEM 1997-2002 Sienna Steering Wheel Audio Control Instal

Postby crankine3 » Mon Mar 09, 2015 9:50 pm

I hate this because I wanted to know this a year ago when I custom wrapped my steering wheel.

I have also been too afraid to mess with the clock spring.
crankine3
Regular SolaraGuy Member
Regular SolaraGuy Member
 
Posts: 68
Joined: Sat Jan 05, 2013 2:34 pm

Re: OEM 1997-2002 Sienna Steering Wheel Audio Control Instal

Postby minig646 » Sun Mar 22, 2015 12:47 pm

I seem to be having issues with the way I got my 12 volts. Every time I start driving or hit the horn, it resets the steering wheel controls and it won't start working again until I turn the ignition off and on (resetting the ASWC interface)

I'm at a loss as to where I can get another 12V source in the steering wheel. I thought maybe the cruise control- but the wiring diagram for the cruise control doesn't show a good 12V source. Any ideas?
2000 MR2 Spyder- SOLD
2000 SEV6- TOTALED
1999 Supercharged SLE V6
User avatar
minig646
Regular SolaraGuy Member
Regular SolaraGuy Member
 
Posts: 210
Joined: Mon Jul 06, 2009 10:27 am
Location: Philadelphia, PA

Re: OEM 1997-2002 Sienna Steering Wheel Audio Control Instal

Postby corlon » Sun Mar 22, 2015 7:46 pm

the 12 volt your seeing at the horn is probably from the other side of a relay coil. the horn goes to ground when pushed in. if I remember correctly the cruise circuit switches ground. i'll check tomorrow at work to see if I can find a switched power in the steering wheel somewhere.
NiCe
User avatar
corlon
SolaraGuy Driver
SolaraGuy Driver
 
Posts: 788
Joined: Mon Nov 26, 2007 11:26 pm
Location: midwest

Re: OEM 1997-2002 Sienna Steering Wheel Audio Control Instal

Postby minig646 » Sun Mar 22, 2015 7:51 pm

I'd appreciate it, but I doubt you'll find anything. The horn works great for me if I'm sitting at idle or with the engine off, but as soon as I start driving the controls shut off.

What I wouldn't give for one more contact on that clockspring! The sienna cruise control must've required one fewer wire than the solara.
2000 MR2 Spyder- SOLD
2000 SEV6- TOTALED
1999 Supercharged SLE V6
User avatar
minig646
Regular SolaraGuy Member
Regular SolaraGuy Member
 
Posts: 210
Joined: Mon Jul 06, 2009 10:27 am
Location: Philadelphia, PA

Return to Tutorials Gen 1 and 1.5

Who is online

Users browsing this forum: No registered users and 2 guests