|  |  | Results of the tests | 
| 1 | SENSOR CHECK | All OK | Problems met | Operation | 
|---|
|  | Visually
inspect the state of the sensors involved in the error (front and/or
rear, right and/or left). In particular, check: that there are not metal shavings in the magnetic tracks
for the flywheels.that the sensor has been correctly fittedthat the sensor does not show signs of abrasion or distortion
 | Continue to Step 2 | Metal shavings present | Clean the flywheel trackContinue
to Step  2 | 
| Sensor incorrectly fitted | Refit correctly.Continue to Step  2 | 
| Left front sensor faulty | Replace the sensor  Op.   3340A26   .Continue
to Step  2 | 
| Right front sensor faulty | Replace the sensor  Op.   3340A28   .Continue
to Step  2 | 
| Left rear sensor faulty | Replace the sensor  Op.   3340A35   .Continue
to Step  2 | 
| Right rear sensor faulty | Replace the sensor  Op.   3340A37   .Continue
to Step  2 | 
| 2 | Continue as instructed by
the tester | All
OK | Problems
met | Operation | 
|---|
|  | Delete
the errors using the diagnostic equipment.Carry out road  See Test   3340A  ABS intervention check to
make the control unit check whether there are still errors present.Return to the workshop and check that the fault is no longer
present using the diagnostic equipment | End of diagnosis | The fault persists | Continue to Step  1 |