HOW TO READ CIRCUIT DIAGRAMS
H O W TO R EA D C IR C U IT D IA G R A M S
The circuit of each system from the fuse (or fusible link) to ground is shown. The power supply is shown at
the top and the ground at the bottom to facilitate understanding of how the current flows.
Indicates power source.
Indicates that terminal is conne-
cted via a plate in the relay box.
Each circuit diagram consists of
block(s). The blocks are divided
by page number.
Indicates splice point numbers.
These numbers are identical to
those described in "Splice Loca-
Indicates the circuit name to be
connected. The arrow indicates
the current flow direction.
Indicates the power suppply in
the control unit. If no voltage is
displayed, this indicates battery
An "X" at the end of a connector
number indicates that the conn-
ector is connected to a central-
ized junction that is shown in the
section "Centralized Junction."
Indicates the connector symbol.
Connectors in the circuit diagram
are indicated in numerical order.
Indicates the operating conditions
of the engine coolant switch, etc.
Indicates connector number.
The same number as used in the
wiring harness diagram.
Connector and connector numbers
are shown at the lower part of the
Connector numbers not enclosed
by frame indicate the device incor-
porated into wiring harness.
Indicates the circuit mame
to be connected. The arrow
indicatesthe current flow
Indicates that the diagram contin-
ues at which belongs to the
block in the same circuit.
Indicates shield wire.
Indicates that current