OBD port

Got a little curious about this and they a quite a few plug-in units c/w bluetooth at around a tenner.

Combining these with a decent app + cheap android device and all of a sudden it seems to get very interesting.

Looked at the Torque app and was really impressed.

However am I right in assuming that the age of my van would mean its OBD1 ? Does this considerably limit what I might be able to achieve ? What if I bought an OBD2 plug in unit and combined it with an OBD1 to OBD2 conversion lead.

Looked at those on the ZF site, but they are very expensive by comparison and been out of stock so long I am beginning to wonder if they have been discontinued.

Found this image of the port from an earlier thread.

There is a communication with Toyotas of this age I have tried to use the OBD and failed the only one that works is an Toyobd and is not available any more cannot find one used anywhere, do a search on youtube it shows it working but noway can I get my hands on one.

JT69 wrote:

There is a communication with Toyotas of this age I have tried to use the OBD and failed the only one that works is an Toyobd and is not available any more cannot find one used anywhere, do a search on youtube it shows it working but noway can I get my hands on one.  

Did a fair bit of reading on this after my initial post.

2 components -
Software - TOYOBD1 APP from ZF is the only one that appears to work with OBD1 in terms of a graphical interface.

Hardware - It's ZF again with the TOYOCOM.

Found the TOYOCOM mentioned on quite a few forums, particularly in North America. It's very sought after and the french canadian who makes these seems to do them in very small batches of 30/40 about once year and they are all snapped up within hours once word gets round on the motoring forums.

The only thing that I might try, given the relatively low-cost and availability of the TOYOBD1 APP, is to try one of the readily available OBD1 > OBD2 patch leads and an OBD2 bluetooth plug-in.

Probably do that for about £15 + APP.

Tried the above got no communication between the toyota OBD1 and the bluetooth

JT69 wrote:

Tried the above got no communication between the toyota OBD1 and the bluetooth  

BLX ........ but cheers for saving me money

Unfortunately it's not the kind of port a cheap ELM OBD2 reader will work with.

On my SC I diagnosed and fixed an error using the method of reading the number of flashes then fixed by connecting 2 wires together - had to plug them somewhere into the OBD connector.

Can't find the details on that on the web atm.

Importantly I did cause the error (airbag light) by starting the car with the dome light fuse removed! Nothing of course tells you it will cause an airbag warning light but it does lol.

https://www.auto-manual.com/fault-codes/error-codes-toyota/

I have quoted part of it below. This bit took me a few goes but it worked. Probably helps to think like a computer when trying to get the timing right!

"alternately, once per second, connect the terminals "TC" and "AB" (the pause between the closures is less than 0.2 seconds)"

@CustardCrazy so.. we would be sitting in the drivers seat counting 'O / D OFF' or 'Check Engine' light flashes..
up to 98 times for some of the codes?! e.g Code 98 - The vacuum gauge in the vacuum amplifier of brakes (C1200)

For engine codes it will be the CEL light. There are two positions for the fault code so 98 would be 9 flashes and a longer pause followed by 8 flashes. It would be easier to understand if you can find a video of someone reading these codes. It's nearly 10 years since I had to look at mine and the video can easily show what is hard to describe. The one I have linked to below is a good start as to what to expect though this car doesn't show any issues.

https://www.youtube.com/watch?v=l_YhNmIVcbA

Here's a link showing a code flashing.
https://www.youtube.com/watch?v=qxL6WGJGtMg

The 'flashy dash' is how we do it for the older Mitsubishi vehicles (my car) too, bridge pins 1 and 4 on the diagnostic connector if I remember correctly, presumably Toyota is different.
It isn't bad if you have an accurate chart of all the codes to look up and can tell you just as much as the highly expensive dealer devices can.