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5-22
FI SYSTEM DIAGNOSIS
FI SYSTEM TROUBLESHOOTING
CUSTOMER COMPLAINT ANALYSIS
Record details of the problem (failure, complaint) and how it occurred as described by the customer. For this
purpose, use of such an inspection form such as below will facilitate collecting information required for
proper analysis and diagnosis.
EXAMPLE: CUSTOMER PROBLEM INSPECTION FORM
User name:
Date of issue:
Malfunction indicator
lamp condition (LED)
Malfunction display/code
(LCD)
Difficult Starting
No cranking
No initial combustion
No combustion
Poor starting at
(
cold
warm
Other
Poor Idling
Poor fast Idle
Abnormal idling speed
(
High
Low) (
Unstable
Hunting (
r/min to
Other
OTHERS:
Model:
Date Reg.
Always ON
Sometimes ON
User mode:
No display
Dealer mode:
No code
PROBLEM SYMPTOMS
always)
r/min)
r/min)
VIN:
Date of problem:
Always OFF
Malfunction display (
Malfunction code (
Poor Driveability
Hesitation on acceleration
Back fire/
After fire
Lack of power
Surging
Abnormal knocking
Engine rpm jumps briefly
Other
Engine Stall when
Immediately after start
Throttle valve is opened
Throttle valve is closed
Load is applied
Other
Mileage:
Good condition
)
)
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Troubleshooting
