Workshop Manuals Factory service & repair Fiat
01 00 General information and technical data02 10 Engine03 18 Clutch04 21 Gearbox and differential05 27 Axle06 33 Braking system07 41 Steering08 44 Suspension and wheels09 50 Auxiliary units10 55 Electrical equipment11 70 Bodywork12 Diagnosis13 Tests14 Wiring diagrams
Fiat Seicento Factory Service Manual (1998-2010)12 · Diagnosis
12 · Diagnostics

D02 Engine running irregularly (missing strokes) (page 2 of 2)

Make
Fiat
Model
Seicento Factory Service Manual
Year
1998–2010
Section
Engine
DiagnosisD02 Engine running irregularly (missing strokes) · page 2 of 2
Step Validity Operation to be performed Test results
OK ⚠ 🔧
3 CHECK COILS

With the diagnostic tool (Examiner or other tool) carry out active tests of the fuel pump relay
All OK
Go to Step 4
Problems found
Fuel pump relay fault
Intervention
Restore connections between:
-- engine ECU
-- fuel pump relay
-- fuel pump
-- inertia switch
(Wiring diagram: E5030 "PETROL ENGINE ELECTRONIC MANAGEMENT")
or replace the fuel pump PROCEDURE OP. 1040A70
4 CHECK AIR CIRCUIT

Check:
-- intactness and tightness of the air supply circuit
All OK
Go to Step 5
Problems found
Damaged circuit component
Intervention
Replace component PROCEDURE 1048A
5 CHECK CORRECT OPERATION

Check the fault is no longer present
All OK
End of test
Problems found
--
Intervention
--

Parts & tools for this job For 1998 Fiat Seicento

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