| | Test results |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect the diagnostic equipment to the diagnostic socket and check that there are no errors in the Body Computer Node. | Move on to Step 2 | Errors present. | Continue following the instructions given by the diagnostic equipment. |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Keeping the diagnostic equipment connected, check in active diagnosis that the direction indicators are working properly. | Move on to Step 4 | Direction indicators not working. | Move on to Step 3 |
| 3 | BODY COMPUTER CONNECTION CHECK | All OK | Problems encountered | Operation |
|---|
| Check for deformed terminals or connections not present on the Body Computer. | Move on to Step 4 | Missing connections/pins bent. | Renew the correct connections |
| 4 | ELECTRICAL SYSTEM CHECK | All OK | Problems encountered | Operation |
|---|
| Check the continuity of the wiring between the steering column switch unit and the Body Computer Node See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS | Move on to Step 5 | Wiring broken. | Restore the correct connections See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS |
| 5 | STEERING COLUMN SWITCH UNIT OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check the continuity of the connections inside the steering column switch unit in the left or right direction indicators position See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS | Move on to Step 6 | Steering column switch unit faulty. | Replace the steering column switch unit Op. 5550A10 STALK UNIT ASSEMBLY - R+R |
| 6 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the Body Computer is working properly. | End of diagnosis. | Body Computer defective | Replace Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R. |
