Mazda Protege 5. Manual - part 5

GENERAL INFORMATION 

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Wiring Harness

•

To remove the wiring harness from the clip in the 
engine room, pry up the hook of the clip using a 
flathead screwdriver.

Connectors
Disconnecting connectors

•

When disconnecting connector, grasp the 
connectors, not the wires.

•

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.

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GENERAL INFORMATION 

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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.

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.

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GENERAL INFORMATION 

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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.

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.

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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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GENERAL INFORMATION 

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Electrical Troubleshooting Tools
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.

Voltmeter

•

The DC voltmeter is used to measure circuit 
voltage. A voltmeter with a range of 15 V or more 
is used by connecting the positive (+) probe (red 
lead wire) to the point where voltage will be 
measured and the negative (-) probe (black lead 
wire) to a body ground.

Ohmmeter

•

The ohmmeter is used to measure the resistance between two points in a circuit and to inspect for continuity 
and short circuits.

Caution

••••

Do not connect the ohmmeter to any 
circuit where voltage is applied. This will 
damage the ohmmeter.

Precautions Before Welding
A vehicle has various electrical parts. To protect the parts from excessive current generated when welding, be sure 
to perform the following procedure.

1. Turn the ignition switch to the LOCK position.

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