IN031--01
IN--8
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INTRODUCTION
HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
HOW TO T ROUBLESHOOT ECU CONTROLLED SYSTEMS
GE NE RAL I NFORMATI ON
A large number of ECU controlled systems are used in the HILUX. In general, the ECU controlled system
is considered to be a very intricate system requiring a high level of technical knowledge and expert skill to
troubleshoot. However, the fact is that if you proceed to inspect the circuits one by one, troubleshooting of
these systems is not complex. If you have adequate understanding of the system and a basic knowledge
of electricity, accurate diagnosis and necessary repair can be performed to locate and fix the problem. This
manual is designed through emphasis of the above standpoint to help service technicians perform accurate
and effective troubleshooting, and is compiled for the following major ECU controlled systems:
System
Page
Engine
1RZ--E:
2RZ--FE:, 3RZ--FE:
The troubleshooting procedure and how to make use of it are described on the following pages.
Pages From Supplement
CLICK HERE TO VIEW CHAPTER INDEX
3RZ-F,3RZ-FE