Checking Switches

In a circuit diagram, a switch is shown in the idle state.

1. Normally open or normally closed switch

   Switches are classified into those which open the circuit and those which close the circuit when off.

   Switches are shown in their normal state unless specified otherwise.

   Fig 1: Identifying Switch Classes

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Switch connection

This figure illustrates a complex switch. The continuity between terminals at each position is as indicated in the table below.

Fig 2: Identifying Switch Connection

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.