Perkins 1106C Genset Systems Operation Testing And Adjusting page 31

KENR6931 31
Systems Operation Section
g01321764
Illustration 34
Schematic for speed/timing sensor
When the engine is cranking, the ECM uses the
signal from the speed/timing sensor in the fuel
injection pump. When the engine is running the ECM
uses the signal from the speed/timing sensor on the
crankshaft. This speed/timing sensor is the primary
source of the engine position.