Important Points in the Customer Problem Analysis
What ----- Vehicle model, system name
When ----- Date, time, occurrence frequency
Where ----- Road conditions
Under what conditions? ----- Running conditions, driving conditions, weather conditions
How did it happen? ----- Problem symptoms
(Sample) Supplemental restraint system check sheet.
SUPPLEMENTAL RESTRAINT SYSTEM Check Sheet
Customer’s Name
Date Vehicle Brought In
VIN
Licence No.
Odometer Reading
km
miles
Date Problem First Occurred
Weather
Temperature
Vehicle Operation
Fine
Cloudy
Starting
Idling
Driving
Constant speed
Acceleration
Other
Inspector’s
Name
CUSTOMER PROBLEM ANALYSIS CHECK
Production Date
Rainy
Snowy
Other
/ /
/ /
/ /
Approx.
Deceleration
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INTRODUCTION
HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
IN-23
23
Author:
Date:
2005 LEXUS IS300 (RM1140U)
1.
CUSTOMER PROBLEM ANALYSIS
The 5 items in the table below are important points in the problem analysis:
In troubleshooting, the problem symptoms must be confirmed accurately. Preconceptions should be
discarded in order to give an accurate judgement. To ascertain what the problem symptoms are, it is
extremely important to ask the customer about the problem and the conditions at the time it occurred.
