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POWER TRAIN - ACD and AYC 2-21 Slit plate Slit plate Neutral position detection slit Photointerruptor (ST-1) Photointerruptor (ST-2) Photointerruptor (ST-N) Light-emitting diode Photo-transistor Zener diode for disconnec- tion detection Slit Output waveform of each sensor V V V ST-1 ST-2 ST-N H H H L L L N (Neutral point) 4° 4° 2° 4° 4° 11° θ Steering wheel sensor θ θ WHEEL SPEED SENSOR that conventionally adopted for the ABS. For vehicle with ACD and AYC, the wheel speed sensor signal waveform-shaped by the ABS-ECU is input to the 4WD-ECU. <Front> Wheel speed sensor <Rear> Wheel speed sensor |