Chrysler laser 1990 Technical Information Manual page 159

The stepper motor construction is as shown in Fig.
A. Its operating principles are explained below, with
reference to the schematic Fig. 8.
STEP "0"
Engine control unit
When coils Al and Bl are energized the upper
halves of stators I and II are N poles and their lower
halves are S poles. Thus, their N poles and S poles
FUEL SYSTEM
Coil Al and A2 e
Fig. A
Power
Coil B 1
Coil B2
attract the S poles and N poles of rotor magnets.
respectively, and the rotor is held stationary.
Fig. B
3
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