Offroad-Express

Hello. I have a problem with my auto box. The gears are fine I think it could be solonoids packing up. And I was wondering how to pull the codes from this vehicle. I know I have to count the blinks from the power mode button, but I don't know what terminals on plug to bridge. I want to see if it spits out a sequence code. And I would like to ask if there are any manuals on this vehicle nissan minstral 2.7td auto. Any help would be great thanks.

Can anyone help

turn key on till the power light turns off key off till you hear a click or for 30 seconds or so put it in to drive with overdrive off,
bush the over drive button then shit in to 2nd, bush the button again and shift in to 1st and push button again then hold accelerate at Wide open throtle till the power light flashes