2398846 - K82 PASSENGER AIR BAG DISABLED WARNING LIGHT

The fault warning light is on and the passenger air bag is not excluded from the control selector
The passenger Air Bag disabled warning light is lit up by a command from the Air Bag Node to the Body Computer sent via the C-CAN. The Body Computer sends the signal to the Instrument Panel Node via the B-CAN.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

Connect the EXAMINER diagnostic equipment and check the CAN NETWORK INFORMATION:

  • For inactive control units
  • For control units with errors
  • For control units with CAN errors
Continue to Step 1Presence of faults in the CAN Continue as instructed by the tester
Impossible to converse with the Body ComputerContinue to Step 9
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Keeping the diagnostic equipment connected, check for the following at the AIR BAG NODE:

  • System/component faults
  • Disablement control plausibility
  • CAN faults
Continue to Step 4System/component faultContinue according to the instructions for the diagnostic equipment
Command not plausibleContinue to Step 2
Presence of C-CAN faults Continue to Step 11
2CHECKING ELECTRICAL EQUIPMENTAll OKProblems metOperation
Check the continuity and the insulation of the wires between the selector control on the passenger side facia and the airbag control unit. See   E7030  AIRBAG Continue to Step 3Wiring short circuited or circuit open Replace wiring See   E7030  AIRBAG
3CHECKING CONTROL SELECTORAll OKProblems metOperation
Check the correct operation of the selector on the passenger side faciaContinue to Step 4Selector not workingChange passenger air bag disablement selector Op.   5580C26 
4CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner check, in the Instrument Panel Node ambient, that there are no errors and the following parameters are present.Continue to Step 5There are errorsContinue in accordance with the instructions for the diagnostic equipment
5ELECTRIC POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Instrument Panel Node electrical power supply is correct.Continue to Step 6Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
6CHECK ELECTRICAL CONNECTIONSAll OKProblems metOperation
Check the electrical connections between the Body Computer and the Instrument Panel, in particular that each individual pin is correctly connected.Continue to Step 7Electrical connections not working.Restore damaged electrical connection.
7CHECK WITH ACTIVE DIAGNOSISAll OKProblems metOperation
With the Examiner in the Instrument Panel Node ambient, check, in active diagnosis, that the Passenger Air Bag warning light is correctly activatedContinue to Step 8The Air Bag warning light is not working properlyReplace the instrument panel Op. 5560B11
8CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check, in the Body Computer Node ambient, that there are no errors and that the passenger Air Bag enablement status variesContinue to Step 11Impossible to connect with the Body Computer control unit.Continue to Step 9
Errors present. Continue in accordance with the instructions for the diagnostic equipment
The parameter values do not changeContinue to Step 11
9ELECTRIC POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Body Computer Node electrical power supply is correct.Continue to Step 10Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
10CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check the possibility of connecting with the Body Computer Node. Continue to Step 8Impossible to connect with the Body Computer control unit.Replace the Body Computer Op. 5580A32
11CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present End of diagnosisFault persists Replace the Body Computer Op. 5580A32