2751096 - K73 SEAT BELT UNFASTENED WARNING LIGHT ON

With seat belts fastened, the seat belt unfastened warning light stays on.
The seat belt unfastened warning light is turned on by a direct earth control between the AIR BAG control unit and the Instrument Panel Node.
Results of the tests
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the EXAMINER diagnostic equipment and check that there are no faults at the Air Bag control unit Continue to Step 2Presence of fault in warning light/belt switch Continue as instructed by the tester
2CHECKING WARNING LIGHT OPERATIONAll OKProblems metOperation
With the ignition key turned off, disconnect the airbag control unit, turn the key to ON and check the warning light is offContinue to Step 4warning light onContinue to Step 3
3CHECKING ELECTRICAL EQUIPMENTAll OKProblems metOperation
Check the insulation of the warning light control lead from air bag control unit to the instrument panel. See   E7030  AIRBAG Continue to Step 5cable short circuited to earth;Replace wiring See   E7030  AIRBAG
4Continue as instructed by the testerAll OKProblems metOperation
Check that the fault is no longer present End of diagnosisFault persistsReplace air bag control unit Op.   5580C14 
5Continue as instructed by the testerAll OKProblems metOperation
Check that the fault is no longer present End of diagnosisFault persistsReplace air bag control unit Op. 5560B11