125000614 - K80 AIRBAG FAILURE WARNING LIGHT ON

During starting, the air bag failure warning light comes on and remains on for more than 4 seconds (control unit initial test)
Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the Examiner to the diagnostic socket.Check that there are no faults in the Air Bag control unitContinue to Step 2Driver''s Air Bag errorContinue to Step 2
Passenger Air Bag errorContinue to Step 3
Driver''s Side Bag errorContinue to Step 4
Passenger Side Bag errorContinue to Step 4
Driver''s Air Bag with curtain errorContinue to Step 5
Passenger Air Bag with curtain errorContinue to Step 5
Driver''s pretensioner errorContinue to Step 6
Passenger pretensioner errorContinue to Step 6
Driver''s satellite sensor errorContinue to Step 7
Passenger satellite sensor errorContinue to Step 7
Passenger Air Bag disabling switch errorContinue to Step 8
Air Bag failure warning light errorContinue to Step 9
Examiner does not converseCheck the AIR BAG control unit supply and earth and the connection between the diagnostic socket and the Air Bag control unit See    See E7030 AIRBAG
2DRIVER''S AIR BAG CHECKAll OKProblems metOperation
Before any R/R operation involving the explosive charges, disconnect the battery leads for 10 minutes
Check that the driver''s air bag is not faulty
Continue to Step 3Air Bag defectiveReplace Air Bag Op.    Op. 5580C18 AIR BAG MODULE - R+R
Clock spring defectiveReplace the clock spring Op.    Op. 5580C12 CLOCK SPRING FOR AIR BAG MODULE ON STEERING WHEEL R R
Faulty wiringReplace wiring Op. 5580C80
Control unit defectiveReplace air bag control unit Op.    Op. 5580C14 AIR BAG ECU - R+R
3PASSENGER AIR BAG CHECKAll OKProblems metOperation
Before any R/R operation involving the explosive charges, disconnect the battery leads for 10 minutes
Check that the passenger air bag is not faulty
Continue to Step 4Air Bag defectiveReplace Air Bag Op.    Op. 5580C22 AIR BAG MODULE PASSANGER SIDE R R
Faulty wiringReplace wiring Op. 5580C80
Control unit defectiveReplace air bag control unit Op.    Op. 5580C14 AIR BAG ECU - R+R
4SIDE BAG CHECKAll OKProblems metOperation
Before any R/R operation involving the explosive charges, disconnect the battery leads for 10 minutes
Check that the side bags are not faulty
Continue to Step 5Air Bag defectiveReplace Air Bag Op.    Op. 5580C44 FRONT SIDE BAG MODULE ONE LH OR RH R R
Faulty wiringReplace wiring Op.    Op. 5580C86 SIDE BAG WIRING HARNESS (ONE) LH OR RH - R R OR REPLACE
Control unit defectiveReplace air bag control unit Op.    Op. 5580C14 AIR BAG ECU - R+R
5AIR BAG WITH CURTAIN CHECKAll OKProblems metOperation
Before any R/R operation involving the explosive charges, disconnect the battery leads for 10 minutes
Check that the head bags are not faulty
Continue to Step 6Air Bag defectiveReplace Air Bag Op.    Op. 5580C50 WINDOW BAG MODULE ONE LH OR RH RR
Faulty wiringReplace wiring Op. 5580C80
Control unit defectiveReplace air bag control unit Op.    Op. 5580C14 AIR BAG ECU - R+R
6PRETENSIONER CHECKAll OKProblems metOperation
Before any R/R operation involving the explosive charges, disconnect the battery leads for 10 minutes
Check that the pretensioners are not faulty
Continue to Step 7Pretensioner defectiveReplace pretensioner Op.    Op. 7065A12 FRONT SEAT BELT (ONE), LH OR RH, WITH PRETENSIONER ON WHEEL - R R
Faulty wiringReplace wiring Op. 5580C80
Control unit defectiveReplace air bag control unit Op.    Op. 5580C14 AIR BAG ECU - R+R
7SATELLITE SENSOR CHECKAll OKProblems metOperation
Before any R/R operation involving the explosive charges, disconnect the battery leads for 10 minutes
Check that the satellite sensors are not faulty
Continue to Step 8Defective sensorReplace satellite sensor Op.    Op. 5580C40 SIDEBAG SENSOR (ONE), LH OR RH - R R
Faulty wiringReplace wiring Op. 5580C96
Control unit defectiveReplace air bag control unit Op.    Op. 5580C14 AIR BAG ECU - R+R
8PASSENGER AIR BAG DISABLING SWITCH CHECKAll OKProblems metOperation

Check:

  • operation of passenger Air Bag disabling switch
  • connection between passenger Air Bag disabling switch and Air Bag control unit See    See E7030 AIRBAG
Continue to Step 9Passenger Air Bag disabling switch faultyReplace the device Op.    Op. 5580C26 PASSENGER AIR BAG SWITCH - R R
Connections not correctReplace wiring See    See E7030 AIRBAG
9ELECTRICAL EQUIPMENT CHECKAll OKProblems metOperation
Before any R/R operation involving the explosive charges, disconnect the battery leads for 10 minutes
Check the connection between the Air Bag control unit and the Air Bag failure warning light at the instrument panel connector.
To switch off the fault warning light, the AIR BAG control unit sends a posistive signal to the instrument panel.
Continue to Step 10Faulty wiringReplace wiring See    See E7030 AIRBAG
10CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the AIR BAG system is working properly.End of diagnosisFault persistsReplace air bag control unit Op.    Op. 5580C14 AIR BAG ECU - R+R