2427491 - H01 VEHICLE DRIFT
-| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
check
| Continue to Step 1 | Wheels braked | Replace the tyres ( Op. 4450B21) | |
| Wheels braked | Balance the wheels ( Op. 4450B40) | |||
| Wheels braked | Restore the correct wheel geometry ( Op. 4450A10 ) | |||
| Wheels braked | Restore the correct wheel geometry ( Op. 4450A40 ) | |||
| Wheels braked | Restore the correct wheel geometry ( Op. 4450A90 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 4450C10 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 4450C32 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 4450D10 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 3310A30 ) | |||
| 1 | CHECK ON DRIFT | All OK | Problems met | Operation |
| Test the vehicle on a straight line, on a good road surface and with no wind and check that there is no drift | End of diagnosis | The car drifts | Swap over the front wheelsContinue to Step 2 | |
| 2 | CHECK ON DRIFT | All OK | Problems met | Operation |
| Test the vehicle on a straight line, on a good road surface and with no wind and check that there is no drift | End of diagnosis | The car continues to drift in the same direction | Replace the tyres ( Op. 4450B21)Continue to Step 3 | |
| The car continues to drift in the same direction | Swap over the front/rear wheels on the same side Continue to Step 3 | |||
| 3 | CHECK ON WHEEL GEOMETRY | All OK | Problems met | Operation |
| Check the front and rear wheel geometry | Continue to Step 4 | Wheels braked | Restore the correct wheel geometry ( Op. 4450A10 ) | |
| Wheels braked | Restore the correct wheel geometry ( Op. 4450A40 ) | |||
| Wheels braked | Restore the correct wheel geometry ( Op. 4450A90 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 4450C10 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 4450C32 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 4450D10 ) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 3310B32) | |||
| Wheels braked | Check the condition of the bearings, hubs and calipers If necessary replace the parts concerned ( Op. 3310A30 ) | |||
| 4 | CHECK ON STEERING WHEEL LOAD | All OK | Problems met | Operation |
| Check that during steering, there are no changes in load on the still steering wheel with wheels both on the ground and raised | Continue to Step 5 | A change in load on the steering wheel is observed | Rotate the steering column by 90° around its axis and straighten the steering wheel spokes ( Op. 4110A14) | |
| 5 | CHECK ON DRIFT | All OK | Problems met | Operation |
| Test the vehicle on a straight line, on a good road surface and with no wind and check that there is no drift | Continue to Step 6 | The vehicle still drifts | Replace the differential unit ( Op. 2110D10 ) | |
| 6 | CHECK ON STEERING WHEEL RETURN | All OK | Problems met | Operation |
| Test the vehicle on a straight line, on a good road surface and with no wind and check that there is no drift when the steering wheel returns after a steering action | Continue to Step 7 | The vehicle drifts on return of the steering wheel: different caster on right and left | Restore the correct caster | |
| 7 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Search for the fault starting from another symptom' | |