turning the ignition switch off will reset the computer for temp. codes. to initialize the computer have the switch off, trany in neutral, and mode select switch in D1 or D2. hold both the up and down shift buttons and turn the switch on. then release and press up - down - up , move the throttle lever from fully closed to fully open and then back to fully closed. this all has to be done pretty fast and should here the control motor cycle.