Mazda 6. Manual - part 97

ELECTRICAL SYSTEM 

GI–19

GI

• Connectors can be disconnected by pressing or 

pulling the lock lever as shown.

Locking connector

• When locking connectors, listen for a click 

indicating they are securely locked.

Inspection

• When a tester is used to inspect for continuity or 

measuring voltage, insert the tester probe from 
the wiring harness side.

• Inspect the terminals of waterproof connectors 

from the connector side since they cannot be 
accessed from the wiring harness side.

Caution

• To prevent damage to the terminal, wrap 

a thin wire around the tester probe before 
inserting into terminal.

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GI–20

ELECTRICAL SYSTEM 

Terminals
Inspection

• Pull lightly on individual wires to verify that they 

are secured in the terminal.

Replacement

• Use the appropriate tools to remove a terminal as 

shown. When installing a terminal, be sure to 
insert it until it locks securely.

• Insert a thin piece of metal from the terminal side 

of the connector and with the terminal locking tab 
pressed down, pull the terminal out from the 
connector.

Sensors, Switches, and Relays

• Handle sensors, switches, and relays carefully. 

Do not drop them or strike them against other 
objects.

Wiring Harness
Wiring color codes

• Two-color wires are indicated by a two-color code symbol.

• The first letter indicates the base color of the wire and the second the color of the stripe.

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CODE

COLOR

CODE

COLOR

B

Black

O

Orange

BR

Brown

P

Pink

G

Green

R

Red

GY

Gray

V

Violet

L

Blue

W

White

LB

Light Blue

Y

Yellow

LG

Light Green

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ELECTRICAL SYSTEM 

GI–21

GI

Fuse
Replacement

• When replacing a fuse, be sure to replace it with 

one of the same capacity. If a fuse fails again, the 
circuit probably has a short and the wiring should 
be inspected.

• Be sure the negative battery terminal is 

disconnected before replacing a main fuse.

• When replacing a pullout fuse, use the fuse 

puller.

Direction of View for Connector
Part-side connector
Direction of view is from the terminal side.
*

:  Part names are shown only when there are 

multiple connector drawings.

YMU000WA1

YMU000WAK

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GI–22

ELECTRICAL SYSTEM 

Vehicle-harness-side connector
Direction of view is from the harness side.
*

:  Part names are shown only when there are 

multiple connector drawings.

Other
Because vehicle-harness-side connectors, such as 
the DLC 2, have to be viewed from the terminal side, 
the direction of view is from the terminal side.

End Of Sie

ELECTRICAL TROUBLESHOOTING TOOLS

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Jumper wire

• A jumper wire is used to create a temporary 

circuit. Connect the jumper wire between the 
terminals of a circuit to bypass a switch.

Caution

• Do not connect a jumper wire from the 

power source line to a body ground. This 
may cause burning or other damage to 
wiring harnesses or electronic 
components.

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