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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:
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. :-(