Vehicle Speed Sensor

Vehicle speed sensor is mounted on transmission/transaxle. Vehicle speed sensor monitors vehicle speed and delivers an input signal to instrument cluster where the input signal is converted to a rectangular waveform and then sent to the Engine Control Module (ECM). The ECM determines the vehicle speed by using input signal and may use input signal for controlling fuel injection system,idle speed control system (some models), ignition timing (spark advance), A/C-cut control system (some models), EGR system (some models), and electronically controlled automatic transmission/transaxle.