| | Results of the tests |
| 1 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|
| Connect the EXAMINER diagnostic equipment and check the CAN NETWORK INFORMATION: - For inactive control units
- For control units with errors
- For control units with CAN errors
| Continue to Step 2 | Presence of faults in the CAN | Continue as instructed by the tester |
| Impossible to converse with the Body Computer | Continue to Step 8 |
| 2 | SWITCH CHECK | All OK | Problems met | Operation |
|---|
| Check that the seat belt not fastened warning light switch is working properly | Continue to Step 3 | Switch not working | Replace the lower belt branch Op. 7065A14 |
| 3 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Keeping the diagnostic equipment connected, check that there are no CAN errors at the AIR BAG NODE | Continue to Step 4 | Presence of C-CAN faults | Continue to Step 11 |
| 4 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Using the Examiner check, in the Instrument Panel Node ambient, that there are no errors and the following parameters are present. | Continue to Step 5 | There are errors | Continue in accordance with the instructions for the diagnostic equipment |
| 5 | ELECTRIC POWER SUPPLY CHECK | All OK | Problems met | Operation |
|---|
| Check that the Instrument Panel Node electrical power supply is correct. | Continue to Step 6 | Positive and/or earth electrical power supply fault. | Replace the defective component (if a fuse is involved, search for the cause of the problem). |
| 6 | CHECK ELECTRICAL CONNECTIONS | All OK | Problems met | Operation |
|---|
| Check the electrical connections between the Body Computer and the Instrument Panel, in particular that each individual pin is correctly connected. | Continue to Step 7 | Electrical connections not working. | Restore damaged electrical connection. |
| 7 | CHECK WITH ACTIVE DIAGNOSIS | All OK | Problems met | Operation |
|---|
| With the Examiner in the Instrument Panel Node ambient, check, in active diagnosis, that the seat belts not fastened warning light is correctly activated | Continue to Step 8 | The seat belt warning light is not correctly activated | Replace the instrument panel Op. 5560B11 |
| 8 | CHECK 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 seat belt status varies | Continue to Step 11 | Impossible to connect with the Body Computer control unit. | Continue to Step 9 |
| Errors present. | Continue in accordance with the instructions for the diagnostic equipment. |
| The parameter values do not change | Continue to Step 11 |
| 9 | ELECTRIC POWER SUPPLY CHECK | All OK | Problems met | Operation |
|---|
| Check that the Body Computer Node electrical power supply is correct. | Continue to Step 10 | Positive and/or earth electrical power supply fault. | Replace the defective component (if a fuse is involved, search for the cause of the problem). |
| 10 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Using the Examiner, check the possibility of connecting with the Body Computer Node. | Continue to Step 8 | Impossible to connect with the Body Computer control unit. | Replace the Body Computer Op. 5505A32 |
| 11 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check that the fault is no longer present | End of diagnosis | Fault persists | Replace the Body Computer Op. 5505A32 |
