Mitsubishi MOTORS Laser 1991, Service Manual, Page: 18 / 320

Ground
Normal
open type
OFF ON
Current does not flow
Current flows
Current flows
C u r r e n t
d o e s
A jumper wire is used to close an open circuit. Never use one
to connect a power supply directly to a load.
A voltmeter is used to measure the circuit voltage. Normally,
the positive (red lead) probe is applied to the point of voltage
measurement and the negative (black lead) probe to the body
ground.
An ohmmeter is used to check continuity or measure resis-
tance of a switch or coil. If the measuring range has been
changed, the zero point must be adjusted before measure-
ment.
In a circuit diagram, a switch is represented by a symbol and in the
idle state.
Switches are classified into those which make the circuit open
and those which make the circuit closed when off.