Starter Motor

The starter motor plunger closes and the motor is supplied with battery power, which in turn cranks the engine, when the "S" terminal is supplied with electric power.

Courtesy of NISSAN NORTH AMERICA, INC.

• "B" terminal: The "B" terminal is constantly supplied with battery power.
• "S" terminal: The starter motor magnetic switch ("S" terminal) is supplied with power when the cranking condition is satisfied.