Crankshaft Position Sensor: Description and Operation

The crank angle sensor in the electronic ignition system distributor generates signals monitored by the ECU.

The "G1" and "G2" signals detect #1 and #4 cylinders TDC and are utilized by the ECU to calculate fuel injection and ignition timing.

The "Ne" signal is an engine speed (rpm) signal that detects crank angle at 30° intervals. It is utilized by the ECU in its control calculations for several output devices:

Fuel injection timing and quantity
Idle speed control valve
EGR vent solenoid valve
EGR vacuum solenoid valve
Purge control solenoid valve
Pressure regulator control solenoid valve
Wastegate solenoid valve
Ignition timing control (igniter)