| | Results of the tests |
| 1 | PRELIMINARY CHECK | All OK | Problems met | Operation |
|---|
| Press
the CITY button repeatedly to check whether the LED in the button
changes state. | Continue to Step 2 | The LED in the button
does not change state. | Continue to Step 6 |
| 2 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Using
the Examiner, check, in the Body Computer Node ambient, that there
are no errors and that the specific parameter varies. | Continue to Step 7 | Impossible to connect
with the Body Computer control unit. | Continue to Step 3 |
| Impossible to connect with the Body Computer control
unit. | Continue according to the instructions for the diagnostic
equipment |
| Impossible to connect with the Body Computer control
unit. | Continue to Step 6 |
| 3 | ELECTRIC POWER SUPPLY CHECK | All OK | Problems met | Operation |
|---|
| Check
that the Body Computer Node electrical power supply is correct. | Continue to Step 4 | Positive and/or earth
electrical power supply fault. | Replace the defective component (if a fuse
is involved, search for the cause of the problem). |
| 4 | CHECK ON CONNECTIONS | All OK | Problems met | Operation |
|---|
| Check
the continuity of the wiring between the CITY button and the Body
Computer Node See E7045 ELECTRIC STEERING | Continue to Step 5 | Electrical connections
not working. | Restore damaged electrical connections. |
| 5 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Using
the Examiner, check the possibility of connecting with the Body
Computer Node. | Continue to Step 2 | Impossible to connect
with the Body Computer control unit. | Replace the Body Computer Node |
| 6 | CHECK ON CONNECTIONS | All OK | Problems met | Operation |
|---|
| Check
that the CITY button and the wiring with the Body Computer Node
are working properly. See E7045 ELECTRIC STEERING | Continue to Step 7 | Button faulty | Replace faulty component |
| Electrical wiring not working | Renew the damaged wiring. |
| 7 | Continue as instructed by
the tester | All
OK | Problems
met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | The fault persists. | Continue to Step 2 |