Sundance L4-135 2.2L SOHC (1987)
Ignition Hall Effect Sensor: Description and Operation
W/O ESC
The Hall Effect pickup assembly, located in the distributor, supplies basic timing signal and engine speed to the computer. Also, the computer can
determine from this signal engine RPM, when each piston is coming up on its compression stroke, or when the engine is in the cranking mode.