|  |  | Test results | 
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation | 
|---|
|  | Check that the wind noise is actually coming from the underbody. | Move on to Step 1 | 1. The wind noise is coming from the front doors2. The wind noise is coming from the area of the bonnet3. The wind noise is coming from the area of the windscreen.4. The wind noise is coming from the sun roof5. The wind noise is coming from the rear area | 1. Proceed as instructed    See table T001 WIND NOISE FROM THE FRONT DOORS2. Proceed as instructed    See table T005 BONNET WIND NOISE3. Proceed as instructed    See table T006 WINDSCREEN WIND NOISE4. Proceed as instructed    See table T020  WIND NOISE FROM THE SUN ROOF 5. Proceed as instructed    See table T025 WIND NOISE FROM THE REAR AREA | 
| 1 | UNDER-ENGINE GUARD CHECK | All OK | Problems encountered | Operation | 
|---|
|  | Check the condition of the under-engine guard and make sure it is correctly fitted | Move on to Step 2 | 1. Under-engine guard2. Under-engine guard not fastened correctly | 1. Replace the under-engine guardOp. 7055B54 2. Renew the fastening of the partition | 
| 2 | CHECK ON UNDER-FLOOR PANEL | All OK | Problems encountered | Operation | 
|---|
|  | Check the trim under the floor panel. In particular, check:- The plugs are present;- The plugs are correctly fitted;- The seals are present and in good condition. | End of diagnosis | Problems with the trim under the floor panel. | Renew the plugs and seals for the trim under the floor panel |