Mazda 1996 626, Service Manual, Page: 14 / 533

Gl
HOW TO READ THE DIAGRAMS
Symbol
Horn
Speaker
DO
Heater
E .
Vehicle speedo­
meter sensor
Ignition switch
S t n - '
£. ^ACC
Meaning
Generates sound when current flows.
Generates heat when current flows.
Movement of m agnet in speedometer
turns contact within sensor on and off.
Turning ignition key operates switch
contacts to com plete various circuits.
Symbol
Switch (1)
Normally open (NO)
Switch (2)
Normally closed (NC)
Harness
(Not connected)
(Connected)
Meaning
Allows or breaks current flow by
opening and closing circuits.
Unconnected intersecting harness.
Connected intersecting harness.
Relay (1)
t — t
Normally open (NO)
Relay (2)
1 — r
Normally closed (NC)
C urrent flowing through coil produces electrom agnetic force causing contact to open or close.
Sensor (variable)
— —
Sensor
(thermistor)
Capacitor
(condenser)
Solenoid
Resistor whose resistance changes
with operation of other components.
Resistor whose resistance changes
with temperature.
C om ponent that tem porarily stores
electrical charge.
Current flowing through coil generates
electrom agnetic force to operate
plungers.
Diode
Light-emitting
diode
(LED)
-H-
Reference diode
(Zener diode)
Known as a sem iconductor rectifi­
er, the diode allows current flow
in one direction only.
C n h o d f l ( K ) M A o o d o (A )
R o w of elftctflc c u rre n t
K - m - A K-
-A K - G E > A
• A diode that lights when current
flows.
• Unlike ordinary light bulbs, the
diode does not generate heat
when lit.
Cathode(K) — Anode(A)
/ ----n=>— Calhode(K)
^--L
f
=;
— Anode(A)
Flow of electric current
Allows current to flow in one direc­
tion up to a certain voltage; allows
current to flow in the other direction
G I-1 0