DIY 22P cable preparation

Usually found on e-bay named 22 Pin OBD1 to 16Pin OBD2 or something alike. 

 

Depending on vendors , internal wire count and color will vary so no definitive color code is to be shared. You need to find out which pin out your own cable uses.

Here are the tools of the trade today

 

First of all please draw the diagnosis box Pinout , found in toyobd1 glossary dialog on a paper sheet. this will be very useful when you will be testing continuity and when you will be soldering to the OBD1READ at a later time.

    

 

 Here are the steps needed before finding out the cable pin out

• buy a cable
• chop off the OBD2 end with heavy duty scissors. use tweezers to make a cleaner cut on the individual wires.
• using the tweezers or specialized sleeve cuter remove external sleeve from the black cable ,about 1.5" of it
• using the wire stripper, strip all individual wires 

Using a multimeter or anything capable to test wire continuity you will find out which are the wire of interest.

Write down the cable pin out as you find it on your paper sheet

After the elimination process is complete, simply chop off unused wires.

 

At that point the cable is ready for being soldered onto an OBD1READ board.

The soldering to an OBD1READ board will be documented at a later time.

TOYOBD1 Android Datalogger :: How to install the OBD1READ 22P

Today I will show you how to install your OBD1READ 22P unit to a compatible car.

First lets take a look at your package content.

1 OBD1READ 22P device ready for installation.

1  user manual that explains how to install the device. 

This user manual explains what kind of problems you may encounter while installing and how to overcome them or where to get support if you can't handle them alone.

The pdf file for the user manual can be downloaded here!

Before doing anything you must know what must be connected for the system to work.

Please take note that some luxury and sports car, LS400, mk4 supras, SC400 and Soarer will need a jumper to be placed in another diagnostic port under the dashboard. Details for those cars are available in the application glossary dialog.

There are 2 types of engine bay diagnosis boxes you can find on supported cars. Installation is a simple matter of plugging the connector on the diagnosis box the right way, there is only one way to do it.

The 22 pins diagnosis box found on mid 90s and late cars

Always black the 22p diagnosis box was also used on OBD2 cars with a slightly different pin out.

The 17 pins diagnosis box found on early cars

Most of the time grey, part of the 22p connector will float in the air this is normal and it can go on only one way.

The needed contacts should be already in the diagnostic box if your car was compatible.In the case of an engine swap with custom wiring, you may need to add the missing wires and contacts in the diagnostic box to be compatible.

Here's a Lexus SC400  with an obd1read scanner tied to the strut tower brace.

 

At that point you are ready to power up the car and configure your cell phone and TOYOBD1.