FI SYSTEM DIAGNOSIS 12-20
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: Model: VIN:
Date of issue: Date Reg. Date of problem: Mileage:
Malfunction indicator
lamp condition
Always ON
Sometimes ON
Always OFF
Good condition
Malfunction indicator
lamp/code
Dealer mode: No code
DTC ( )
PROBLEM SYMPTOMS
Difficult Starting Poor Driveability
No cranking Hesitation on acceleration
No initial combustion Back fire/ After fire
No combustion Lack of power
Poor starting at
( cold warm always)
Surging
Abnormal knocking
Other
Engine rpm jumps briefly
Other
Poor Idling Engine Stall when
Abnormal idling speed
( High Low) ( r/min)
Immediately after start
Throttle valve is opened
Unstable Throttle valve is closed
Hunting ( r/min to r/min) Load is applied
Other
Other
OTHERS:
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