OBD-II / M-OBD / DLC3 pinouts

[occamsrazor]

Hi,

Further to this thread ... I'm trying to work out if my 2004 LC100 4.7l v8, a Japanese Domestic Market version, is OBD-II compliant. Have all the threads and am still confused. It has the OBD-style connector but when I plugged it in to an OBD reader it didn't communicate. The reader worked fine on my mechanic's 2001 LC100 V8, but not mine.
Is it possible that the connector is OBD but that Toyota is not using the OBD-II protocol on this particular car? I've read about Toyota using their own M-OBD protocol on some cars and the connector is described as DLC3. I've also looked at docs on the web where you are supposed to be able to tell the protocol from the connector pinout, but I am still confused...

From what I can see my connector has wires in the following pins: 4,5,7,9,11,12,13,15,16. Two not-so-great photos are attached.

A couple links I found useful, though not definitive in my case:

http://www.auterraweb.com/obdiipinout.html
http://www.obdii.com/connector.html
http://www.diagnostics4u.com/9/diagnostic-information

Those would seem to imply mine supports ISO 9141-2/KWP2000 flavour of OBD-II. But I seem to remember reading somewhere that if Pin 13 is used that means it's not OBD-II.

This is all very confusing.... :-(

 

[RobRed]

Have you checked the OBD 10A fuse?

 

[Wilsil]

I have tried a scangauge on my 2002 LX470 and it didn't connect either.

 

[occamsrazor]

I have tried a scangauge on my 2002 LX470 and it didn't connect either.

I think it's a lot about different regions... plus some random factors thrown in just to make everything more complicated than it already is. OBD reader works fine on my mechanic's Japanese 2001 LX470, but not my 2004 LC100 UZJ100.

@RobRed - Thanks, that's a good idea, I will check.

 

[occamsrazor]

The fuse is intact, mine is 7.5A. Interesting though that the fuse cover itself describes that fuse as "OBD-II". Think I need to get hold of another scanner and try again.

 

[occamsrazor]

So I went ahead and bought a Gopoint BT1 bluetooth OBD reader - Use obd ii to check your service engine light | GoPoint
And it doesn't seem to work at all either :-(

 

[Warrenpfo]

You need to get one of these Toyota Tester2-toyota intelligent tester2-Online Shopping

I have one and it does a good job.

 

[occamsrazor]

So I went ahead and bought a Gopoint BT1 bluetooth OBD reader - Use obd ii to check your service engine light | GoPoint
And it doesn't seem to work at all either :-(

Just an update. I tried it on a couple of other vehicles - A Japanese Subuaru Impreza and a UK Volkswagen Golf. It worked 1st time and very nicely on the Golf, but not on the Impreza. So the unit works, it's just that xxxx Japanese cars aren't always OBD-II compliant, even for relatively recent models like mine.

 

[danielg511]

Hey, I'm experiencing the same issue. I cant find a scanner that works with my 04 LC100. What did you end doing?