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

Diagnosis table

Make
Fiat
Model
Seicento Factory Service Manual
Year
1998–2010
Section
On-board instruments › Diagnosis table
DiagnosisDiagnosis table

Diagnosis table

K40 Alternator warning light does not work

With the key at MAR, the “alternator” warning light does not light up when the engine is stationary

(if the warning light stays on when the engine is running, there is actually a fault in the alternator. The alternator is not recharging the battery)

Step Validity Operation to be performed Test results
OK Problems found Intervention
1 CHECK SIGNAL
Turn the key to MAR with the engine off and check whether the signal (earth) from the alternator reaches the instrument panel correctly
(Wiring diagram: E5010 “Starting and recharging”)
All OK
Go to Step 2
Signal does not reach instrument Go to Step 3
CHECK ALTERNATOR WARNING LIGHT
Check warning light on instrument panel operation: DESCRIPTION AND OPERATION 5560.
All OK
Go to Step 4
Warning light does not work Replace warning light
PROCEDURE OP. 5560B28
3 CHECK ALTERNATOR
Check:
– alternator operation
– connection between alternator and instrument
(Wiring diagram: E5010 “Starting and recharging”)
All OK
Go to Step 4
Connections cut off Restore components
Faulty alternator Overhaul or replace alternator
PROCEDURE OP. 5530A18
4 CHECK CORRECT OPERATION
Check the fault is no longer present
All OK
End of test
– –

Parts & tools for this job For 1998 Fiat Seicento

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