Tercel Sedan 2-Door L4-1456cc 1.5L SOHC (3E-E) (1991)
Pick-Up Coil: Description and Operation
Pickup Coil Air Gap
The signal generators, found inside the distributor housing, consist of the NE sensor rotor, its associated pick-up coils, and a common shaft that is
directly coupled to the camshaft. Because the shaft is coupled to the camshaft, both sensors turn in time with the engine. As the teeth on the sensor rotor
break the flux lines of the respective pick-up coils, a voltage pulse is generated. These pulses are the input signal to the ECU.
The NE sensors detect crank angle and engine RPM. The signals are received by the ECU and utilized, with input from other engine sensors, to produce
computed ignition timing, electronic spark advance (ESA), and injection timing.