184000484 - K100 MIL WARNING LIGHT DOES NOT WORK

With key on, the MIL warning light does not come on;

The MIL warning light is turned on via a direct earth control supplied by the engine control node. When everything is working normall, the MIL warning light should come on with the ignition on and go out once the engine has started;

		Results of the tests
1	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment to the diagnostic socket and check the operation of the MIL warning light at the engine management node through active diagnosis.	Continue to Step 5	The warning light does not come on	Continue to Step 2
2	CHECKING WARNING LIGHT OPERATION	All OK	Problems met	Operation
	Check that the MIL warning light is working See E4010 INSTRUMENT PANEL	Continue to Step 5	The warning light does not come on	Continue to Step 3
3	CHECKING ELECTRICAL EQUIPMENT	All OK	Problems met	Operation
	Check the continuity and the insulation of the wires between the engine control node and the instrument panel node. See E4010 INSTRUMENT PANEL	Continue to Step 4	Cable broken	Renew the electrical connections See E4010 INSTRUMENT PANEL
4	INSTRUMENT PANEL REPLACEMENT	All OK	Problems met	Operation
	Replace instrument panel Op. 5560B11	End of diagnosis
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
1.2 16v1.4 16v	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the engine management control unit Op. 1056B82
1.3 JTD 16v	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the engine management control unit Op. 1060G80