Toyota AVENSIS 2000 Supplement Manual page 26

1. CUSTOMER PROBLEM ANALYSIS
In troubleshooting, the problem symptoms must be confirmed accurately and all preconceptions must be
cleared away in order to give an accurate judgement. To ascertain just what the problem symptoms are, it
is extremely important to ask the customer about the problem and the conditions at the time it occurred.
Important Point in the Problem Analysis:
The following 5 items are important points in the problem analysis. Past problems which are thought to be
unrelated and the repair history, etc. may also help in some cases, so as much information as possible should
be gathered and its relationship with the problem symptoms should be correctly ascertained for reference
in troubleshooting. A customer problem analysis table is provided in DI section for each system for your use.
Important Points in the Customer Problem Analysis
D What ––––– Vehicle model, system name
D When ––––– Date, time, occurrence frequency
D Where ––––– Road conditions
D Under what conditions? ––––– Running conditions, driving conditions, weather conditions
D How did it happen? ––––– Problem symptoms
(Sample) Supplemental restraint system check sheet.
CUSTOMER PROBLEM ANALYSIS CHECK
Supplemental Restraint System Check Sheet
Customer's Name
Date Vehicle Brought In
Date Problem First Occurred
Weather
Temperature
Vehicle Operation
AVENSIS/CORONA SUP (RM781E)
INTRODUCTION
Inspector's
Name
/ /
Fine Cloudy
Approx.
Starting
Driving [ Constant speed
Other
– HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
Registration No.
Registration Year
Frame No.
Odometer Reading
Rainy Snowy
Idling
Acceleration
IN–21
/ /
km
miles
/ /
Other
Deceleration
]