2427573 - K101 M.I.L WARNING LIGHT STAYS ON / ENGINE STARTS

The MIL warning light stays on with the engine running
The MIL warning light is turned on by an earth control supplied by the Engine Control Node
Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
1.2 8v 1.2 16v 1.4 16vConnect the diagnostic equipment (Examiner) to the diagnostic socket and check that there are no faults inthe system at the Engine Management Node Continue to Step 2Faults in system Continue according to the instructions for the diagnostic equipment If EOBD faults are involved, the reference fault diagnosis (also shown by the diagnostic equipment) are those between Z50 and Z58
1.3 JTDConnect the diagnostic equipment (Examiner) to the diagnostic socket and check that there are no faults inthe system at the Engine Management NodeContinue to Step 2Faults in system Continue according to the instructions for the diagnostic equipment
2CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Keeping the diagnostic equipment connected to the diagnostic socket, check the operation of the MIL warning light at the Engine Management Node through active diagnosisContinue to Step 6The warning light does not flash Continue to Step 3
3CHECKING WARNING LIGHT OPERATIONAll OKProblems metOperation
Disconnect the Engine Control node from the car side wiring and check whether the warning light goes off Continue to Step 6The warning light does not go off Continue to Step 4
4ELECTRICAL EQUIPMENT CHECKAll OKProblems metOperation
1.2 8v 1.2 16v 1.4 16vCheck the insulation of the warning light control lead from engine control node to instrument panel node. See   E5030  PETROL ENGINE ELECTRONIC MANAGEMENT Continue to Step 5cable short circuited to earth;Renew the electrical connections See   E5030  PETROL ENGINE ELECTRONIC MANAGEMENT
1.3 JTDCheck the insulation of the warning light control lead from engine control node to instrument panel node. See   E5050  DIESEL ENGINES ELECTRONIC MANAGEMENT Continue to Step 5cable short circuited to earth;Renew the electrical connections See   E5050  DIESEL ENGINES ELECTRONIC MANAGEMENT
5CHECK CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present.End of diagnosisFault persistsReplace instrument panel Op. 5560B11
6CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present End of diagnosisFault persists Replace the engine management control unit Op.   1060G80