Friday 10 April 2015

OBD1READ + TOYOBD1 :: making sure it works for your specific case prior purchase!

There is lots of  combinations to be done so let's clear out if TOYOBD1 will work with yours! Here are 5 steps to find out like a pro.


1- Is your car standard and listed under the supported engines list

if not, it may be supported but you should ask me advices so that we sort it out.



2- You need an android device


Phones and tablets with Bluetooth capabilities using running Android 2.2 or higher will do.
SD Card external storage capability is highly suggested for use of the import/export features.
take the time to install the TOYOBD1 application and familiarize yourself with the menu and the very informative glossary.


3- You need to find 4 signals in your ECU pin out 

You need to know your exact ECU pin out, it may differ from market to market and even from car model to another model WITH the same engine, or between Manual transmission and Automatic transmission. if you cannot find your ECU pin out online you can open your ECU and take a look at the pins label on the bottom PCB. please share your unavailable pin out findings so that we live in a better world :)

when looking at an ECU pin out you want to see TE2,(VF or VF1), E1 and B+. OBD1READ needs those 4 signals to work. if you don`t have a TE2 signal it will not be able to work at all.


4- You need to know your diagnostic box on your car( this is where OBD1READ connects )

You need to find it and identify what signals are available there, otherwise you will need to source them elsewhere. The sticker in the cap can be misleading, it will tell you where each signal is housed but it will not tell you if it is present.That sticker is universal for toyota cars of a specific era. The signals you are after are VF1,B+,E1 and TE2 please be careful many persons mistook TE1 for TE2, they are physically near and almost named identically...beware!( no harm to the device can be done if you connect te1 instead of te2)

You need to probe in those spaces with something small enough like a micro screw driver, you are searching for metal contacts. if some are missing, (TE2 is generally the missing one) you need to source that signal from elsewhere. either on ecu pins through new wires or by splicing into existing wires at the ecu connectors. the 1UZ-FE engine swaps mostly always need to take the TE2 signal this way.


5- You have found your signals, you can test if they do useful work

Using this test method you can determine if your ECU can be put into obd1 data output. it requires a digital multimeter( a test light is not a proper tool for this)


At this time you should have an android device ready with TOYOBD1, You have an ECU that was proven to output OBD1 data when TE2 and E1 are jumped together AND you know where to source your signals.
It is safe to say that an OBD1READ device with TOYOBD1 will work for your car!


  1. Thank you for this blog, it is a brilliant job. I am looking into fitting one to my Previa, 2TZFE Engine, 1996, Automatic, UK. I had a look and the TE2 pin is missing. By any chance have you come across to a reference on how to source this signal from the ECU for this car? My pin out layout is as follows

    Thanks and kind regards,

    1. HI, to make sure your ECU has the TE2 pin I would suggest removing and opening the ECU case to look at the pins label on the printed circuit board. in those years toyota labeled them conveniently. maybe you have OBD2 ecus in the UK 2TZ-FE, a SIL pin would indicate that feature. you can also contact me by email to share pictures of the pcb and additional research. jfrancoisbreton at hotmail dot com

  2. Can you email me on how to purchase this? Do you have any plans to make this USB compatible? My email is fatboyxpc [at] gmail [dot] com. Obviously replace the [at] and [dot] with the appropriate characters. Thanks!

  3. Hello, I'm a Toyota 1991 truck 22RE, EFI. My pins are in the proper configuration however they read B+, VF, T, FP, E1. The ECU was essentially standard from 88to91 for the Hilux. This may help.

  4. I have a AW11 4A-GZE and I see at toyobd1-android-datalogger-what-engines.html that it is listed as, "Engines that are clearly known to not be working". I also see on my FSM that I only have a TE1 and not the TE2 which is listed above to be required. My Question: Are they any plans to get the data from TE1 or is this an actual limitation of systems without a TE2, ie, is it entirely hopeless for me or do we just need to wait until it is figured out? Thank you for your reply and wow what an amazing product. I wish I could buy this right now for my 4A-GZE... :'(

    1. sorry there is not much than can be done, those ECUs simply don't output the data. you will need to look at other means than the obd1 protocol.

  5. Hi JF I would like to buy one of your TOYOBD1 devices. How would I go about doing this?
    Many thanks Kai

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