Workshop Manuals Factory service & repair Fiat
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Fiat 500 Factory Service Manual (2007-2024)22 · Fault diagnosis
22 · Diagnostics

Mil warning light stays on (engine starts)

Make
Fiat
Model
500 Factory Service Manual
Year
2007–2024
Section
Instrument panel › Mil warning light stays on (engine starts)
Fault diagnosisMil warning light stays on (engine starts)

MIL WARNING LIGHT STAYS ON (ENGINE STARTS)

1.2 8v, 1.3 Multijet, 1.4 16v

The M.I.L. warning light remains on when the engine is running.

Test results
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the Examiner diagnostic equipment to the diagnostic connector and check that there are no system errors at the Engine Management NodeMove on to Step 2Presence of errors in the systemProceed as instructed by the diagnostic equipment
2CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Keeping the diagnostic equipment connected to the diagnostic socket, check the operation of the M.I.L. warning light at the control panel, by using active diagnosisMove on to Step 3The warning light does not flash

Replace the Instrument Panel

Op. 5560B10 CONTROL PANEL - R+R

3CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the engine control unit is working properlyEnd of diagnosis.Engine control unit defective

Replace the engine management control unit

Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

3CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the engine control unit is working properlyEnd of diagnosis.Engine control unit defective

Replace the engine management control unit

Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R

Parts & tools for this job For 2007 Fiat 500

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