|  |  | Results of the tests | 
| 1 | CHECKS WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation | 
|---|
|  | Connect
the diagnostic equipment and check the operation of the steering
angle sensor.To do this, enter the PARAMETERS ambient and display the STEERING
ANGLE parameter: the values should increase when the steering wheel
is turned in a clockwise direction (right) and decrease when it
is turned in the opposite direction. | Continue to Step 3 | Steering angle sensor
operation faulty or non existent | Continue to Step  2 | 
| 2 | ELECTRICAL CHECKS | All OK | Problems met | Operation | 
|---|
|  | Check
the ESP system supply voltage  See   E7023  ESP .Check the steering angle sensor wiring.Also check that there are no faults at the wiring | Continue to Step 3 | Incorrect supply | Restore the correct supply,
if necessary, replace the faulty components | 
| Wiring faulty | Renew the wiring | 
| 3 | STEERING ANGLE RECALIBRATION | All OK | Problems met | Operation | 
|---|
|  | Using
the diagnostic equipment, in ACTIVE DIAGNOSIS, carry out the STEERING
ANGLE CALIBRATION, making sure that the outcome is successful | Continue to Step 4 | The procedure is not successful | Replace the steering angle
sensor   Op.   3350E20 | 
| 4 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation | 
|---|
|  | Delete
the errors using the diagnostic equipment.Carry out road 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  3 |