Crank Angle Sensor

On Legend models, 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.

On Integra models, crank angle sensor consists of a combination TDC/Crank sensor mounted in distributor housing. The ECU uses input from crank pick-up coil portion of this sensor to help determine ignition and fuel injector timing for each cylinder. This sensor also furnishes an engine speed (RPM) signal to ECU. The ECU uses TDC pick-up coil portion of this sensor to initialize ignition timing upon start-up (cranking) and when crank angle signal is abnormal.

Integra also utilize a CYL sensor located on end of camshaft. Sensor consists of a single-lobed CYL trigger rotor and a CYL pick-up coil. The ECU uses input from this sensor to determine position of No. 1 piston for proper synchronization of injector firing for each cylinder.