Circuit Inspection; Circuit Description; Inspection Procedures; Wiring Diagram - Toyota Corolla 2004 Manual

CIRCUIT INSPECTION

How to read and use each page is shown below.
D Circuit Description
The major role and, operation of the circuit
and its component parts are explained.
D Diagnostic Trouble Code No. and Detection Item
D Indicates the diagnostic trouble codes, diagnostic
trouble code settings and suspect areas for a
problem.
D

Wiring Diagram

This shows a wiring diagram of the circuit.
Use this diagram together with ELECTRICAL
WIRING DIAGRAM to thoroughly understand the
circuit.
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, SB = Sky Blue
The first letter indicates the basic wire color and
the second letter indicates the color of the stripe.
2004 COROLLA (RM1037U)
INTRODUCTION
SFI SFI SFI
– HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
D Inspection Procedures
Use the inspection procedures to determine
if the circuit is normal or abnormal. If it is ab-
normal, use it to determine whether the prob-
lem is located in the sensors, actuators, wire
harness or ECU.
D Indicates the condition of the connector of the ECU
during the check.
Connector being checked
is connected.
Connections of tester are
indicated by (+), (–) after
terminals name.
Author :
01–29
SFI SFI SFI
Connector being checked
is disconnected.
For inspection of connector
with body ground, there is
nothing about the body
ground written down.
Date :
D25842
32