Ok, the ECU resetting pattern is completely incorrect. Well at least for my car (that is 97 240sx). Here is what worked for me:
By orion from FA:
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Quote </td></tr><tr><td id="QUOTE">1) Pull the ECU, turn ignition to ON but don't start engine
2) Turn the screw full clockwise, hold 2 seconds, turn back
3) read the codes
4) Repeat step '2' to erase codes, start car to store them</td></tr></table><span id='postcolor'>