Techstream Not Acknowledging (Autofill) Car

Is 12 volt up to the tasks being asked of it??. I had similar in the 05 we had here but on road a very short time. 12V was old and tired and the HV battery was corroded pretty badly. With flashing gauges etc going on. Car was taken off road.

 

Have you tried to manually enter the cars information in I have a 2010 that will not autofill either I tried to manually enter in the mess and it still wouldn't work so I believe that car has some kind of problem with the connecting or the OBD2 port It's not my cable because it works on every other Toyota here even non Prius.

 

Off the top of my head, your initial symptoms would lead me to believe you have a 12v problem. First thing I would do is verify I have a good 12v battery and all the terminals are tight, including the (-) connection on the car body. Then I would verify I have 12v power at the underhood fuse box. I would monitor that voltage while having someone else attempt to start the car. Make sure it stays solid. Make certain the main fusible link hasn't blown. There have been instances of the main link and or the AM2 fuse not blowing completely, and allowing voltage to still pass through. Creates havoc as soon as any current load is attempted, as the high resistance creates a huge voltage drop for the downstream circuits.

 

I think there is a way you can test some of the pins on the OBD2 port If you look in the manual or OBD.com or something like that it'll show you pinouts where you can measure plus 12 volts and make sure you have a good negative ground all that right in the receptacle so you may want to do that before you just start buying computers. Chapman may have something to say about this I'm not sure I guess this does happen in other models of car too I've never really researched the OBD2 port not speaking to the computer or reading device.

 

Yes that's how my Mongoose Toyota TIS computer works here works fine and all of my cars and when I go to plug it into this red 2010 solar roof car that the customer and person can read with all this Bluetooth nonsense and Dr Prius tech doesn't work doesn't recognize the car I can't enter in the car manually I can do nothing I can't even read basic OBD2 codes in text stream when this is going on I pulled the plug and go to the car right next to it and the car is recognized connects I can read all the codes and any of the modes No problem Go back to the 2010 sold the roof car nothing still today nothing The lady can read it with her Bluetooth reader and Dr Prius my 3100 in Nova can read it but tech no sir what is the problem who knows as far as I'm concerned the car it's got a blown head gasket and it's not being fixed so who cares about the codes.

 

There are about a dozen ECUs in a Gen 2 Prius. If Techstream isn't able to talk to any of 'em, that's likely something more systemic than a problem with any one ECU.

If I remember right, the repair manual has all those sections we normally talk about, one for every trouble code, that you can use for troubleshooting when you know what codes you have, and it also has a section without any trouble code, just with the troubleshooting steps for you to use when you can't get Techstream to connect.

Toyota Service Information and Where To Find It | PriusChat

You might be having the kind of issue where it pays to just go straight there and follow the troubleshooting ideas. When you're having some more common issue, sometimes a bunch of PriusChat folks can chime in and say "yeah, happened to me, it was this", but the more rare the issue—and this one seems pretty rare—the less likely there are to be other people with prior experience of it. (Not to mention that even when there are people popping up saying they've had a similar issue, it's never guaranteed that what caused it for them is the same as what's caused it for you.)

 

Is there a section in the manual for troubleshooting that involves no data link connection? I haven't read the manual so I have no idea I imagine they're probably is I can't imagine what would go on having power and ground I would think everything else ought to be pretty much up to snuff I don't even know how to troubleshoot the data link connection system on any of these things and it doesn't work it doesn't work and oh well that's just it usually most of the cars I'm working on generally aren't worth the diagnostic prowess to apply to the vehicle they're usually dying on their way out whatever need more money than they're worth and repairs etc More like with the 2010 car it didn't connect We knew what's wrong with it anyway fixed it up enough to drive it another few months I'm getting codes is the least of our issue getting that person into another valid vehicle is. I'll have to look into reading that I would imagine it involves checking all your wiring and tracing this to that and yeah as you see very quickly at any hourly rate that would get to unreasonable very fast in a generation too for the diagnostic money that could take I could have another whole car as we've seen four or five times yeah it's a crap shoot that I'm not buying another can of problems but so far sevens have been rolled pretty well.

 

It would be pretty funny if they left that section out, since getting a connection in the first place is kind of needed before any of the other sections are much use.

 

What will Techstream do in IG ON (not READY) mode?

 

Well at least you're getting an acknowledgment that you're connected and you can't read the systems My system show I don't know because I can't get past the selection of the car and options mode That's where my 2010 and any car I've had this happen on that's where everything ends No VIN displayed no options selectable and I can't get the thing to select okay at the bottom of that window because of that but anyway so that's interesting You are somewhat connected

 

I'll have to go hunt that section down as I don't own the manual so I guess with these newer things you can't get a manual anymore you have to get a PDF file or something.