Nice wiring diagram, one with little knowledge of electrical can easily DIY. since last week i went to madina cng due to lack of information, that guy installed CIP4 basic and highly non-professional installation burnt my Corolla Injectors' ECU IC. I warn all of RWP/ISB to stay away from them...they pretend to be qualified but what i faced is the ground fact., even after sales service is pathatic, they don't accept their mistakes.
being off topic, can some body confirm me that do Se Saloon 2003, is Oxygen sensor exist? @fyq, do u have any link with Faisel?since he don't have high words about you.