Crankshaft Position (CKP) Sensor 7X

Description
The 7x crankshaft position sensor is the other Hall-effect switch closer to the crankshaft. The interrupter ring is a special wheel cast on the crankshaft that has seven machined slots. six of which are equally spaced 60 degrees apart. The seventh slot is spaced 10 degrees from one of the other slots. as the interrupter ring rotates with the crankshaft, the slots change the magnetic field. this will cause the 7x the Hall-effect switch to ground the 3X signal voltage that is supplied by the ignition control module. The ignition control module interprets the 7x on-off signals as an indication of crankshaft position. The ignition control module must have the 7x signal to fire the correct ignition coil.

Operation
The crankshaft position sensor provides a signal used by the ignition control module. The ignition control module also uses the 7X crankshaft position sensor to generate 3X reference pulses which the PCM uses to calculate RPM and crankshaft position Refer to Electronic Ignition System for additional information.