312000579 - H008 EXCESSIVE ROLLING/PITCHING - AT REAR

The customer complains of an excessive rolling and/or pitching sensation of the vehicle, especially at the back.
1ROAD TEST TO EVALUATE ROLL/PITCHINGAll OKProblems encounteredOperation
Carry out a road test to evalute the rolling/pitching of the vehicle    See Test 44B ROAD TEST TO EVALUATE ROLL/PITCHINGEnd of diagnosis

  • Subjective judgement compared with reference vehicle 6
  • Subjective judgement compared with reference vehicle 5.5
  • Subjective judgement compared with reference vehicle 3-4

  • Acceptable performance of the vehicle
  • Move on to Step 2
  • Move on to Step 4
2END OF TRAVEL BUFFER CHECKAll OKProblems encounteredOperation
Check that the end of travel buffer for the rear spring is not faulty carrying out the    See Test 4420AA REAR SUSPENSION SPRINGS END OF TRAVEL BUFFER CHECKMove on to Step 3End of travel buffer deterioratedReplace the end of travel buffer
3SHOCK ABSORBER EFFICIENCY CHECKAll OKProblems encounteredOperation
Check the efficiency of the shock absorbers by carrying out manual compression manoeuvres (resting on the wheel arch by the centre of the wheel), which should be carried out on both sides of the vehicle.Move on to Step 4Sudden return without dampingReplace the shock absorber that is not working properlyOp. 4420A12
4VEHICLE GEOMETRY CHECKAll OKProblems encounteredOperation
After replacing the shock absorbers, check the geometryEnd of diagnosisGeometry values do not conformRestore the geometry to the correct values