Lexus SC300 / Lexus SC400. Manual — part 200
BODY ELECTRICAL SYSTEM
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BODY ELECTRICAL SYSTEM
BE–1
GENERAL INFORMATION
Wiring Color Code
Wire colors are indicated by an alphabetical code.
B
= Black
L
= Blue
R
= Red
BR
= Brown
LG
= Light Green
V
= Violet
G
= Green
O
= Orange
W
= White
GR
= Gray
P
= Pink
Y
= Yellow
The first letter indicates the basic wire color and the second
letter indicates the color of the stripe.
Connector
1.
PIN NUMBERS OF FEMALE CONNECTOR
Numbered in order from upper left to lower right.
2.
PIN NUMBERS OF MALE CONNECTOR
Numbered in order from upper right to lower left.
HINT: When connectors with different of the same number of
terminals are used with the same parts, each connector
name (letter of the alphabet) and pin number is specified.
3.
DISTINCTION OF MALE AND FEMALE CONNECTORS
Male and female connectors are distinguished by shape of
their internal pins.
(a) All connectors are shown from the open end, and the
lock is on top.
(b) To pull apart the connectors, pull on the connector itself,
not the wires.
HINT: Check to see what kind of connector you are discon-
necting before pulling apart.
BE–2
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BODY ELECTRICAL SYSTEM
General Information
How to Replace Terminal
(with Terminal Retainer Type)
HINT: To remove the terminal for this type of connector,
please construct and use the special tool or like object shown
on the left.
1. DISCONNECT
CONNECTOR
Disconnect the connector according to the instructions on
.
2.
DISCONNECT TERMINAL FROM CONNECTOR
(a) Using the special tool, raise the retainer up to the
temporary lock position.
HINT: The needle insertion position varies according to the
connector ’s shape (number of terminals, etc.), so check the
position before inserting it.
(b) Using the special tool, release the locking lug and pull
the terminal out from rear.
3.
INSTALL TERMINAL TO CONNECTOR
(a) Insert the terminal.
HINT:
1.
Make sure the terminal is positioned correctly.
2.
Insert the terminal until the locking lug locks firmly.
3. Insert the terminal with retainer in the temporary lock
position.
(b) Push the retainer in to the full lock position.
4. CONNECT
CONNECTOR
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BODY ELECTRICAL SYSTEM
General Information
BE–3
Replacement of Fuse
HINT: If replacing the fuse, be sure to replace it with a fuse
with an equal amperage rating.
NOTICE:
1.
Turn off all electrical components and the ignition switch
before replacing a fuse. Do not exceed the fuse amperage
rating.
2.
Always use a fuse puller for removing and inserting a
fuse. Remove and insert straight in and out without
twisting. Twisting could force open the terminals too
much, resulting in a bad connection.
If a fuse continues to blow, a short circuit is indicated. The
system must be checked by a qualified technician.
HINT: The puller is located at Relay Block No. 2.
How to Inspect for System Inspection
This inspection precedure is a simple troubleshooting which
should be carried out on the vehicle during system operation
and is based on the assumption of system component
trouble (except for the wires and connectors, etc.).
Always inspect the trouble taking the following items into con-
sideration.
•
Ground point fault
•
Open or short circuit of the wire harness
•
Connector or terminal connection fault
•
Fuse or fusible link fault
NOTICE:
1.
This is an on–vehicle inspection during system
operation. Therefore, inspect the trouble with due regard
for safety.
2.
If connecting the battery directly, be careful not to short
circuit, and select the applicable voltage.
BE–4
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BODY ELECTRICAL SYSTEM
General Information
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