| STEP | CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
|---|
| 1 | Before proceeding with the test, check that the tyre inflation pressure is correct. | Restore the correct tyre inflation pressure. |
| 2 | Check that the wheels are correctly balanced | Rebalance the wheels |
| 3 | Start up the engine and, with the vehicle stationary (switch off the ASR using the special button), check that the noise from the front area is not present. | The cyclical noises are due to the power unit.The test can be considered over |
| 4 | Steer, with the vehicle stationary, to the left and the right and check that there is no irregular noise and check that there is no irregular noise with the gearbox in neutral. | Continue as instructed in the See table S022 GEARBOX NOISE - IN NEUTRAL |
| 5 | Set off from stationary to check that there is no metallic noise or roughness. | Continue as instructed in the See table S021 GEARBOX NOISE - AT TAKE OFF |
| 6 | Still setting off from stationary, check that there are no transverse vibrations. | Continue as instructed in the |
| 7 | Carry out a road test on an unmade road engaging the various gears. | Continue as instructed in the See table S023 GEARBOX NOISE - IN A SPECIFIC GEAR |
| 8 | Carry out a road test on an unmade road engaging the various gears when cornering. | Continue as instructed in the See table S024 GEARBOX NOISE - WHEN CORNERING |
| 9 | With the help of a colleague, check that the noise is not due to one of the dashboard components not being properly fastened (when your hand is placed on top of it the noise either lessens or disappears). | The noise is due to creaking of the interior/exterior dashboard components.The test can be considered over |
| 10 | If the vehicle is fitted with a sun roof, check that the noise is not being caused by the later by opening and closing it and placing your hand on it to quieten any noise. | The noise is due to the sun roof.The test can be considered over |
| 11 | Brake in safe conditions to check whether the noise is only present during braking as a result of the brake discs. | The noise is caused by the brake discs or rear drumsThe test can be considered over |
| 12 | Pull the handbrake lever gently, whilst driving in a straight line, to check whether the noise disappears. | Adjust the handbrake travel |
| 13 | During the previous check, make sure that there are no transverse vibrations during the pull and release stages.Increase the speed and check that there is no metallic noise, possibly accompanied by transverse vibrations which vary according to the vehicle speed or engine revs. | Continue as instructed in the See table S019 FORECARRIAGE TRANSVERSE VIBRATIONS |
| 14 | Carry out a road test on an unmade road (cobblestones) to define the type of noise, checking that there is no creaking from the front area. | Continue as instructed in the See table S016 FRONT SUSPENSION NOISE (CREAKING/SQUEAKING) |
| 15 | Carry out a road test on an unmade road (cobblestones) to define the type of noise, checking that there is no whistling from the front area. | Continue as instructed in the See table S017 FRONT SUSPENSION NOISE (WHISTLING/HUMMING) |
| 16 | Carry out a road test on an unmade road (cobblestones) to define the type of noise, checking that there is no knocking from the front area. | Continue as instructed in the See table S018 FRONT SUSPENSION NOISE (KNOCKING) |
| 17 | Carry out a road test on an unmade road (transverse tracks, cobblestones) to define the type of noise, checking that there is no creaking from the rear area. | Continue as instructed in the See table S026 REAR NOISE (CREAKING/SQUEAKING/TICKING) |
| 18 | Carry out a road test on an unmade road (cobblestones) to define the type of noise, checking that there is no whistling from the rear area. | Continue as instructed in the See table S027 REAR NOISE (WHISTLING/HUMMING) |
| 19 | Carry out a road test on an unmade road (cobblestones) to define the type of noise, checking that there is no knocking from the rear area. | Continue as instructed in the See table S028 REAR NOISE (KNOCKING) |
