A/T Error Codes

When things go wrong your ECU stores "error codes" about the events it detected in its internal memory. Those remained stored as long as the ECU has power. For the transmission you have to check to see what they are and they are displayed through the blinking "O/D OFF" indicator instead of the check engine light for normal engine error codes.

How to check:
Open the hood and locate the diagnostic connector. Is it next to the battery and can be seen in the figure to the right. You will want to connect terminals E1 and TT. I used a big paper clip, which I leave in the back of my car, and it is actually 'sprung' against the connector lid to add some pressure for a better connection. Clicking on the picture will give you a much better view. It might be hard to see in the picture, so the bottom figure illustrates the terminals to connect, in red, with the paper clip.

After you do this turn the ignition to the "ON" position but don't start it. Make sure the O/D is on, button pressed in, otherwise the light will be continually on which isn't very helpful. The "O/D OFF" should now be blinking. If it is continuos quick blinking then you are fine, there are no error codes, otherwise you have to count the blinks. Each set of blinks will represent one digit with a long pause to separate digits. There may be more than one code installed, but it is on a continuos loop. So if you saw blink...blink.......blink...blink...blink...blink....... that would be a code 24. After you are done you can clear the codes by pulling the "RAD NO1." fuse (15A) in the fuse block right next to the diagnostic connector for 30 seconds or more, make sure the engine is off.

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