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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.

1 | APP sensor
2 | Accelerator pedal

• 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.

1 | Main sensor (duty)
2 | Sub sensor (voltage)
3 | Output voltage
4 | Accelerator pedal depression amount
5 | Duty cycle
6 | High
7 | Low
8 | Large
9 | Small