Troubleshooting

TROUBLESHOOTING

WARNING: Before any intervention on system components, carefully read the SAFETY REGULATIONS listed above and follow them scrupulously.

System self-diagnosis

During the entire traveling period of the car, the ECU runs a self-diagnostics test to check the airbag system and memorize any failures. When a failure is detected, it not only memorizes it but it turns on the airbag warning light.

Upon starting the car, the airbag warning light turns on for about 4 seconds (initial test phase) and then turns off.

If the light DOES NOT turn on or DOES NOT turn off after 4 seconds, there is a failure in the airbag system.

The anomalies memorized in the control unit can be cancelled, after the failure has been repaired by means of diagnostic instruments (e.g. Examiner).

The control unit also memorizes airbag activations caused by particularly severe collisions. When a collision causes activation of the system, it is not possible to delete it from the memory of the control unit and therefore the control unit must always be replaced.

System diagnostics

It is possible to analyze anomalies memorized in the control unit by means of diagnostic instruments (e.g. Examiner).

During diagnosis, in particular if it is necessary to take measurements of continuity on the module lines, it is absolutely necessary to disconnect the modules from the wiring harness and replace them with the appropriate simulation resistances.

IT IS PROHIBITED TO TAKE CONTINUITY MEASUREMENTS ON SYSTEM COMPONENTS UNLESS THE MODULES HAVE BEEN REPLACED WITH THE SIMULATION RESISTANCES.