(5) Atmospheric Air Pressure Sensor (Built-in ECU) a. This sensor converts the atmospheric air pressure into an electrical signal to correct full- load injection volume. VPATM Output Voltage (V) 3.8 107 {1.09} Atmospheric Air Pressure (kPa {kg/cm 2 }) Q000278E (6) Accelerator Position Sensor a. This sensor converts the angle of the pedal effort applied to the accelerator pedal into electrical signals and sends them to the ECU. The accelerator sensor uses hall elements. A magnet is mounted on the shaft that moves in unison with the accelerator pedal, and the magnetic field orientation changes with the rotation of the shaft. The changes in the magnetic field orientation generate voltage.
V PA 1 GND1 VC1 V PA 2 GND2 VC2 Q000266E Hall elements (2 pieces) V PA 1 Output Voltage GND1 V PA 1 5 V PA 2 VC1 4 4.0 V V PA 1 V PA 2 3 3.2 V GND2 1.6 V 2 1 VC2 0.8 V 0 5 10 15 20 Magnets (1 pair) Accelerator Opening Angle (°) Q000265E 27 GND1 VC1 VPA2 GND2 VC2