| | Results of the tests |
| 1 | ELECTRICAL CHECKS | All OK | Problems encountered | Operation |
|---|
| Check that the electrical connections for the brake lights circuit are correctCheck the continuity of the wiring between the pressure sensor and the control unit See E7023 ESP Also check that the brake lights are not burnt out | Move on to Step 2 | Wiring faulty | Repair the wiring |
| Brake lights burnt out | Replace the burnt out bulb and move on to Step 2 |
| 2 | BRAKE STATUS PEDAL CHECK | All OK | Problems encountered | Operation |
|---|
| Connect the diagnostic equipment and, in the PARAMETERS ambient, check the "BRAKE PEDAL STATUS" parameter. Press the brake pedal and read "PRESSED". Release the brake pedal and read "RELEASED" | Move on to Step 4 | Incorrect reading | Move on to Step 3 |
| 3 | BRAKE PEDAL SWITCH CHECK | All OK | Problems encountered | Operation |
|---|
| Check the condition of the brake pedal switch See Test 5550DA CHECKING THE OPERATION OF THE SWITCH ON THE BRAKE PEDAL | Move on to Step 4 | Switch faulty | Replace the brake pedal switch Op. 5550D10 BRAKE LIGHT SWITCH - R+RMove on to Step 2 |
| 4 | BRAKE PEDAL SWITCH ADJUSTMENT | All OK | Problems encountered | Operation |
|---|
| Adjut the pedal switch, referring to Service News 3350 E 000 AA N°33 03.02 | Move on to Step 5 | . | - |
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
|---|
| Delete the errors using the diagnostic equipment.Carry out a road test to ensure that the control unit checks whether there are any errors still present. See Test 3350EA ESP SYSTEM ACTUATION CHECKReturn to the workshop and check that the fault is no longer present using the diagnostic equipment | End of diagnosis | The fault persists | Replace the ABS electrohydraulic control unit Op. Op. 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT |
