THE new Celica has a "multiplex communications network" designed to improve vehicle functions while reducing the complexity of the wiring harness (and therefore reduce weight). Celica also has dedicated electronic control units (ECUs) for the engine, body and combination meter. They control vehicle functions as diverse as the transponder engine immobiliser and wireless door locks. The cruise control has an actuator which directly controls the throttle valve there is no movement of the accelerator pedal while cruise control is in operation.