| | Results of the tests |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect the diagnostic equipment and, in the PARAMETERS ambient, display the wheel speed.With the vehicle raised on a two column lift, rotate the wheels by hand and check that the diagnostic equipment signals the change in wheel speed. | Move on to Step 3 | One or more wheels do not signal the correct change in speed | Move on to Step 2carrying out the checks on the wheel in question |
| 2 | SENSOR CHECK | All OK | Problems encountered | Operation |
|---|
| Visually inspect the state of the sensors involved (front and/or rear, right and/or left). In particular, check: - that there are no metal shavings in the flywheel magentic tracks
- that the sensor involved is correctly fitted
- that the sensor involved shows no signs of abrasion or distortion
- that there are no interference elements in the system wiring
- after market components
| Move on to Step 3 | Presence of metal shavings | Clean the flywheel track |
| Sensor fitting faulty | Refit correctly |
| Front sensor faulty | Replace the sensor Op. 3340A30 RPM SENSOR (ONE) OF ONE L/H OR R/H FRONT WHEEL - R+R |
| Rear sensor faulty | Replace the sensor Op. 3340A34 RPM SENSOR (ONE) OF ONE L/H OR R/H REAR WHEEL - R+R |
| Magnetic wheel faulty | Replace the magnetic wheel |
| 3 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
|---|
| Delete the errors using the diagnostic equipment.Carry out three road tests in succession: See Test 3340OA A.B.S. SYSTEM ACTUATION CHECK See Test 3350AA ASR SYSTEM ACTUATION SYSTEM See Test 3350EA ESP SYSTEM ACTUATION CHECKto ensure that the control unit checks whether there are any errors still present.Return to the workshop and check that the fault is no longer present using the diagnostic equipment | End of diagnosis | The fault persists | Move on to Step 1 |
