How to Determine if the Crankshaft Sensor is Faulty?

[JaydenDella]

Crankshaft sensor fault determination methods: If the crankshaft position sensor fails, the engine warning light on the dashboard will illuminate. The engine control unit cannot receive signals from the crankshaft position sensor, making it unable to determine the crankshaft's rotation angle. Consequently, the vehicle will lack high-voltage electricity, preventing startup, ignition, or fuel injection. The crankshaft position sensor is one of the primary sensors in the engine electronic control system. It provides signals for ignition timing (ignition advance angle) and confirms crankshaft position, detecting piston top dead center, crankshaft rotation angle, and engine speed. The structure of crankshaft position sensors varies by vehicle model and can be categorized into three main types: magnetic pulse type, photoelectric type, and Hall effect type. These sensors are typically installed at the crankshaft front end, camshaft front end, flywheel, or within the distributor.