Hi folks. I have a 1UZFE VVTi, with 31,24,17,28,22,26 pin ECU (UCF20/21?). Car runs fine (its a swap). I connected up "W" (Pin 6 of E15) to check engine light, and can read codes off the CEL when I earth "TC" (Pin 5 of E11). I decided to go one step further, bought a scanner, and connected to...