The odd thing is that the Speed reads correctly on the Head Unit, differing by maybe 2 mph compared to the speedometer, so everything seems to be working correctly. I will be calling Eclipse to find out if they will be able to provide any more information about this.

 

That's what I thought too, but that speed is being derived from the GPS antenna. If you unplug it, or shield the antenna, the speed stops registering.

 

No problem. Let me know when you are back and working on it and I will do what I can.

 

toastbox: are you sure? because I didn't have the VSS wire connected for the past week I had the head unit in... It always said "0 m/h, 0 km/h". As soon as I connected the VSS wire in yesterday, my head unit was reporting the correct speed.

 

It could be different then for yours. Mine was not doing so.
Definitely post whatever response you get from Eclipse, it should be interesting to see what they have to say. To me, it sounds like Engifineer is right on the money...the head unit is getting a different signal than what it is expecting.

I thought about buying a Speed pulse generator (they are about $40 or so) and seeing if that corrected the problem. I'm not sure though that it would send the correct signal either though.

 

Spoke to a girl named Kay at Eclipse... She said the HU should be expecting a square wave.. She also said to connect to an orange wire, which I think she meant into the center console (A/C, heater, clock, etc.). Asked her about the purple wire going into the ECU and she said that is also correct to connect the VSS wire.. (the 2nd plug from the top of the ECU, pin #17, purple wire)... She said for reverse, they plug that into the red wire by the driver's kick panel, which is "the way how eclipse does it"..... So it looks like it's correctly spliced into the correct wire and it's expecting the correct signal...

I will call again to speak to another representative to see what they say...

 

I can confirm that those are indeed the correct wires.

I would bring up the points that Engifineer mentioned:
"It is a 0 - 5V signal. It sounds like the unit is not seeing the signal within the range it is expecting. You may want to look through the doco for the head unit or call them to find out what it is expecting. I believe it should output at approximately 17HZ at 12mph(20 kmh)."


Ask them what volt signal it is expecting, and at what frequency. If they can't answer that, then ask them to transfer you to a higher tech, or an engineer

 

I will keep you posted as soon as I find out.

 

sorry toastbox.. my mistake.. when i drove under a bridge, i lost all my satellite bars and my speed on the gps went to "0 m/h, 0 km/h".. so i guess the VSS wire is still not connected.. Kay from eclipse (the only expert on GPS there) said last year's model gives off a square wavelength as they have tested it before.. i have the '05 and still no luck..oh btw, forgot to ask about volt signal or frequency.. if you or engifneer figure anything out, please let me know..

also, does your reroute not work also? i'm wondering if that's another thing that will be enabled once we get the VSS working.

 

toastbox: You're probably on vacation but I just want to confirm with you that I finally got it working. As someone had said before, those wire taps can be an electrician's best friend but also your worst nightmare.. I bought 18/20 guage taps cause one of the wires looked bigger.. I finally ran a voltmeter (one side touching the same pin of where the ECU wire goes into the plug connector, and the other end touching the short (metal part) on the tap... no current went through.. retapped with the red tap that Eclipse provided, and testing the connection again, and current went through... As soon as I plugged in my battery and turned on the car, I could tell immediately that the GPS was different... The names of the streets are on the bottom centered (Rather than on the top).. I think it may have still said "Check speed pulse." I decided to put an address as I was driving, and instead of it saying "please drive to the route to start navigation (or whatever it says)", it said "starting route (or something on those lines)".... When I approached the corner, the box on the right came up and told me to make a right in X feet...

Autoreroute will also work when the VSS is correctly connected... So to sum it all up, you don't need a different type of wire/tap or whatever... and square wavelength or not, it works.. You just HAVE TO make sure it is tapped and cutting through the insulation of the wire... I thought the first time it tapped into the wire but i was wrong.. retapped and worked successfully. Did not need a special voltmeter, just connected a thin wire on one alligator clip, spliced an end of that wire and stuck it in connector, and then had the other wire touching the short on the tap...

If anything I said is confusing, just give me a PM... I just arrived in CA last nite and am on 6 hours of sleep in the past 2 days..if you're anywhere around Pleasanton, gimme a PM and I'll be happy to help... Will be here until the end of the week..

 

NuNu,

yep, I am indeed on vacation! I couldn't quite resist taking the laptop with me (lame I know, lol).

Thanks so much for the information! Do you by any chance have any extra taps from Eclipse? I'd be willing to pay for it
Or did you mean one of the taps that was included when you bought the unit?

 

I used the taps that Eclipse provided when I bought the head unit. They give you 3 red taps... Only used two as I wired the parking break to a screw (that is connected to chassis) in the glove compartment area... It's right in front of the ECU and slightly to the left, on the ceiling...

 

I am having the same problem with mine, is not giving me voice guidance, did NUNU or toastbox take any pictures of this? Please let me know what I can to fix this problem, I read the whole thread but still a bit confused, any help would be greatly appreciated!

 

I have not solved the problem with this. I am not using the supplied connectors that came with the NAV unit, since I dont have them.

My solution is that I'm going to sell mine and upgrade to a pioneer z1.

 

Problem fixed! I took a purple wire, connected that wire to #17 under the grove compartments' purple cable, connected the other end to the stereo's white cable. I get the voice now!

 

So you connected the purple wire from the Nav system (which is the Nav's VSS wire)AND the white wire on the NAV system to #17 on the glove compartment (what color is that wire) ??

 

well i can tell you its def not just a scion thing. I dont have a scion, or a toyota. I have a ford. ANd i am having a similar problem.

My parking wire has always been grounded. and the purple/white speed wire from the head unit was always plugged in right, because my head unit worked perfectly. Its a 6600 head unit. All the functions worked great. Then one day, i was going 40mph, but my icon wasnt moving on the screen. checked the settings and it said studying speed pulse and that i was going 1 or 0 mph. It kept saying check speed pulse. Then hours after that, it just went haywire, and now when im going 20mph, it shows I am going 400mph. Or when I am going 70, im going over 600mph on the settings screen. I was unable to find the problem so far.

 

I don't the Eclispe brand of NAV and have heard that the Camry system is very similar . I have the 2006 Camry Nav system in a 2006 XB and mine was doing the same thing, no voice turn by turn. The dealer installed my unit but couldn't get it too operate properly. I took the dash out Friday when i was going to install a PAC steering wheel interface and fix the NAV splice. Well when I plugged the factory steering wheel controls plug in the steering wheel controls worked but it set a trouble code in the computer so off to the dealer it went. When I took it back they spent one day with a multi- meter checking each pin under the dash and found that the schematic was wrong. The red and black stripe is wrong and should be red with white stripe. The VSS ended up on viloet with white stripe. They called Scion/Toyota to verify this this morning and now the the NAV unit works great and factory steering wheel control work with out a PAC unit installed. The trouble code was set by the steering wheel controls which has a few extra wires that causes the computer to set a trouble code. To fix this you just remove the pins from the socket and it will work great.
My dealer, Roger Smith in KC was very nice about the whole thing, gave me a loaner car, and fixed the problem no charge. The installer said it became a quest to fix the problem after a while. Hope this helps with your situation.
Jeff