ACCELERATOR PEDAL POSITION (APP) SENSOR CONSTRUCTION/OPERATION [L3 Turbo]
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• The sensor is installed on the AP and detects how much the AP is depressed.
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1
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APP sensor
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2
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Accelerator pedal
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• The Hall element design has been adopted on the sensor.
• A non contact type sensor has been adopted to improve durability.
• The APP sensor is composed of the main sensor and sub sensor, and detects the accelerator opening angle with these two sensors (main and sub).
• The main sensor output a duty signal, and the sub sensor output a voltage signal.
• Even if a malfunction occurs in either one of the sensors, the detection is performed with a normal sensor drive-by-wire control is maintained.
• If both the main and sub sensors for the APP sensor malfunction, signals necessary for the drive-by-wire control are not input to the PCM and the drive-by-wire control is disabled.
• However, even though the drive-by-wire control is disabled, the throttle valve opening angle necessary for minimum driving is maintained mechanically.
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1
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Main sensor (duty)
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2
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Sub sensor (voltage)
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3
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Output voltage
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4
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Accelerator pedal depression amount
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5
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Duty cycle
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6
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High
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7
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Low
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8
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Large
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9
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Small
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