Toyota ZZT230 series Repair Manual page 28

Taking into account the points on the previous page , a flow chart showing how to proceed with troubleshoot·
lng using the diagnostic trouble code check is shown below. This flow chart shows how to utilize the diagnos·
tic trouble code check effectively, then by carefully checking the results, indicates how to proceed either to
diagnostic trouble code troubleshooting or to troubleshooting of problem symptoms table.
)
•
Diagnostic trouble code displayed
•
Problem symptoms exist
Troubleshooting of problem indicated
trouble code
by diagnostic
)
INTRODUCTION
Diagnostic trouble code check
Making a n t and
e of
o clearing of
Symptom confirmation
Pro blem sym ptom
exist
Diagnostic trouble code check
•
•
Normal code displayed
Problem symptoms exist
Troubleshooting of each
problem symptom
-
HOW TOTRO UB LESH OO T ECUCONTRO LLED
SYSTEMS
the
diagnostic trouble codes displayed
N � prob lem sym ptom s
SXISt
Simulation test using the symptom
simulation methods
•
•
System Normal
If a diagnostic trouble code was
displayed in the initial diagnostic
trouble code check, it indicates
that the trouble may have occurred
in a wire harness or connector
that circuit in the past. Therefore,
check the wire harness and con­
nectors (See page IN-30).
Normal code displayed
No problem symptoms exist
IN-23
in