How to Read Wiring Diagrams

How to Read Wiring Diagrams

Connector symbols

Most of connector symbols in wiring diagrams are shown from the terminal side.

- Connector symbols shown from the terminal side are enclosed by a single line and followed by the direction mark.





- Connector symbols shown from the harness side are enclosed by a double line and followed by the direction mark.
- Certain systems and components, especially those related to OBD, may use a new style slide-locking type harness connector. For description and how to disconnect, refer to [Harness Layout] [1][2]Harness.
- Male and female terminals.





Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams.

Sample/wiring diagram -example-

- For detail, refer to following "Description".






Description

Component Locations [1][2]Harness





Switch Positions

Switches are shown in wiring diagrams as if the vehicle is in the "normal" condition.

A vehicle is in the "normal" condition when:

- ignition switch is "OFF",





- doors, hood and trunk lid/back door are closed,
- pedals are not depressed, and
- parking brake is released.

Multiple Switch

The continuity of multiple switch is described in two ways as shown below.

- The switch chart is used in schematic diagrams.
- The switch diagram is used in wiring diagrams.