Crank Angle Sensors

The crank angle sensor consists of a combination TDC/Crank sensor mounted in the distributor housing. The ECU uses input from the 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 the ECU. The ECU uses the TDC pick-up coil portion of this sensor to initialize ignition timing upon start-up (cranking) and when crank angle signal is abnormal. See Fig 1 .

The Integra also utilizes a CYL sensor located on the end of the 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 the proper synchronization of injector firing for each cylinder. See Fig 2 .

Fig 1: View of Integra TDC/CRK Sensor

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: View of Integra CYL Sensor

Courtesy of AMERICAN HONDA MOTOR CO., INC.