SYSTEM / Control System Accelerator Pedal Control Purpose: To control the engine speed in response to stepping amount of the accelerator pedal. Operation: Actual Engine Speed 1. MC converts the input value from the accelerator pedal into the target engine speed and transmits it to ECM. Fast Idle 2. ECM controls the engine speed in response to the target engine speed. NOTE: Output value of the accelerator pedal sen- sor is 0.5 V to 4.5 V. Slow Idle Target Engine Speed NOTE: In case the accelerator pedal sensor be- comes abnormal, MC makes backup con- trol, and the engine speed is fixed at about 1100 min -1 . Slow Idle Fast Idle NOTE:
In case MC becomes out of order, or CAN fails, ECM makes backup control, and the engine speed is fixed at about 1100 min -1 . NOTE: In case MC becomes out of order with the accelerator remaining normal, control of the engine speed is possible by connecting the accelerator pedal sensor wires directly to ECM. T2-1-8