|  |  | Test results | 
| 1 | CHECK ON LOWER FASTENINGS MOVEMENT | All OK | Problems encountered | Operation | 
|---|
|  | Check that the lower backrest fastenings on the vehicle move freely (rapid attachment to wheel arch) | Move on to Step 2 | Interference with foreign objects or with fastening elements | Remove the causes of the interference | 
| 2 | CHECK ON MATCHING BETWEEN BACKREST AND VEHICLE INTERIOR TRIM | All OK | Problems encountered | Operation | 
|---|
|  | Check the matching of the backrest with the vehicle interior trim (wheel arch liners, door panels, etc.) folding the backrest over | Move on to Step 3 | Interference with trims | Reposition the trims and/or carry out the correct backrest fitting cycle | 
| 3 | CENTRE BRACKET CONDITION CHECK | All OK | Problems encountered | Operation | 
|---|
|  | Check the condition of the centre bracket (for the split seat). Also check there is no knocking | Move on to Step 4 | No plastic bush on the rotation pin | Remove the backrest and fit the plastic noise prevention bush | 
| 4 | CHECK ON CORRECT FASTENING OF CENTRE BRACKET | All OK | Problems encountered | Operation | 
|---|
|  | Check that the fastening of the centre bracket with the backrest structure and with the floor is correct | Move on to Step 5 | Incorrect fastening of bracket with backrest and/or with floor | Retighten the centre bracket to the backrest and/or the floor to the correct torque | 
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation | 
|---|
|  | Check that the fault is no longer present | End of diagnosis | The fault persists | Replace the left backrest    Op. 7050A13  SPLIT REAR SEAT LEFT BACKREST - R.R. Replace the right backrest    Op. 7050A15  SPLIT REAR SEAT RIGHT BACKREST - R.R. |