3360327 - O10 FRONT SEAT LUMBAR ADJUSTMENT NOT WORKING

When the switch is pressed the seat lumbar adjustment does not work.
Results of the tests
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the Examiner diagnostic equipment and check for the following at the CAN:

  • inactive control units;
  • control unit errors;
  • control units with errors in CAN line.
Continue to Step 2Presence of faults.Continue according to the instructions for the diagnostic equipment.
2CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Keep the Examiner diagnostic equipment connected and check for errors:

  • at the seat lumbar adjustment control switch;
  • at the seat lumbar adjustment operating relay.
Continue to Step 4Seat lumbar adjustment control switch error.Continue to Step 8
Seat lumbar adjustment operating relay. Continue to Step 3
3CHECKING ELECTRICAL CIRCUITAll OKProblems metOperation
Check continuity/insulation of the electrical connection between the seat lumbar adjustment operating relay and the driver's position node/passenger position node See   E3076  ELECTRICALLY-ADJUSTABLE SEATS .Continue to Step 6Electrical connection interrupted or not insulated.Restore electrical connection continuity/insulation See   E3076  ELECTRICALLY-ADJUSTABLE SEATS .
4CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Check that the seat lumbar adjustment motor is working properly using active diagnosis.Continue to Step 8Seat lumbar adjustment motor not working. Continue to Step 5
5CHECKING ELECTRICAL CIRCUITAll OKProblems metOperation
Check continuity/insulation of the electrical connection between the seat lumbar adjustment motor and the driver's position node/passenger position node See   E3076  ELECTRICALLY-ADJUSTABLE SEATS .Continue to Step 8Electrical connection interrupted or not insulated.Restore electrical connection continuity/insulation See   E3076  ELECTRICALLY-ADJUSTABLE SEATS .
6CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsReplace the seat lumbar adjustment operating relay.
7CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsReplace the seat lumbar adjustment motor.
8CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persists

Replace:

  • if the driver's seat is involved: driver's position node
  • if the front passenger seat is involved: passegner position node