312000649 - K073 SEAT BELT UNFASTENED WARNING LIGHT ON

The warning light remains on even when the driver''s seat belt is fastened. N.B: The seat belt not fastened warning light is turned on by a command sent via the B-CAN from the "Air Bag Node" to the Body Computer. The latter sends the signal, via the B-CAN, to the Instrument Panel Node.
Test results
1SWITCH CHECKAll OKProblems encounteredOperation
Check the correct operation of the seat belt unfastened warning light switchMove on to Step 2Switch not operatingReplace the lower branch of the belt    Op. 7065A14 ANCHORAGE ROD FOR , (ONE), FRONT SEAT BELT LEFT OR RIGHT - R.R.
2CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Keeping the diagnostic equipment connected, check for faults at the AIR BAG NODEMove on to Step 31. Air bag control unit defective2. Presence of faults1. Replace the Air Bag control unit    Op. 5580C14 AIR BAG ECU - R+R 2. Continue as instructed by the diagnostic equipment
3ACTIVE DIAGNOSIS CHECKAll OKProblems encounteredOperation
With the Examiner in Instrument Panel Node mode check that the seat belt unfastened warning light is correctly activated in Active DiagnosisEnd of diagnosisThe seat belt warning light does not flashReplace the Instrument Panel.    Op. 5560B10 CONTROL PANEL - R+R