| 摘要 |
PURPOSE:To prevent engine stall at the time of sudden deceleration by forcibly prohibiting lock-up based on the unlearning output of a throttle totally closed point from a judging means. CONSTITUTION:When a throttle totally closed point is not learned yet immediately after changing a battery 31, a CPU 30 puts up a lock-up prohibiting flag in the defined area of a RAM 26 to forcedly prohibit lock up and surely prevent engine stall at the time of sudden deceleration. In addition, at the unlearning time of a throttle totally closed point, an initial value is set in which one volt is added to the input voltage from the whole throttle sensors 19 to ensure kick down irrespective of the dispersion of the throttle sensors 19. On the other hand, as the CPU judges that an idle switch 18 is switched over to off, the lock-up prohibiting flag is removed to renew the throttle totally closed data in the RAM 28 to a throttle voltage corresponding to a present article. |
