| | Test results |
| 1 | CHECK ON BACKREST ADJUSTMENT ASSEMBLY | All OK | Problems encountered | Operation |
|---|
| After partly removing the backrest upholstery, check whether the noise (creaking) is coming from the adjustment assembly worm screw | Move on to Step 2 | The noise is coming from the worm screw (motor) | Replace the adjustment assembly Op. 7045A38 DRIVER'S SEAT BACKREST LUMBAR ADJUSTMENT DEVICE - R.R WITH SEAT REMOVED |
| 2 | CHECK ON POSITIONING/ATTACHMENT OF LUMBAR PLATE | All OK | Problems encountered | Operation |
|---|
| Check that the lumbar plate and/or adjustment cables are correctly positioned/attached | Move on to Step 3 | Positioning/attachment not correct | Reposition the lumbar plate and/or adjustment cables correctly |
| 3 | CHECK ON LUMBAR PLATE CONDITION | All OK | Problems encountered | Operation |
|---|
| Check for breaks in the lumbar plate | End of diagnosis | Presence of breaks in the lumbar plate | Replace the adjustment assembly Op. 7045A38 DRIVER'S SEAT BACKREST LUMBAR ADJUSTMENT DEVICE - R.R WITH SEAT REMOVED |
