Crank Angle Sensor

Crank angle sensor consists of a combination CRK/CYL sensor mounted on end of camshaft. This sensor furnishes 2 separate input signals to ECU. The ECU uses CRK signal to help determine fuel injector timing, ignition timing and engine speed (RPM). The ECU uses CYL signal to detect TDC position of No. 1 cylinder when engine is running. This signal is used to trigger proper fuel injectors.

In conjunction with CRK/CYL sensor, Legend uses a TDC sensor located in distributor housing. This sensor consists of a TDC pick-up coil and six-lobed TDC trigger wheel assembly. This signal is used by ECU for initializing triggering of spark plugs upon start-up cranking) and when crank angle signal from CRK/CYL sensor is abnormal.