Alarm siren not working
- Make
- Fiat
- Model
- Stilo Factory Service Manual
- Year
- 2001–2007
- Section
- Alarm › Alarm siren not working
Fault diagnosisAlarm siren not working
ALARM SIREN NOT WORKING
When the alarm is activated, the system goes on/off correctly (visual signals and deterrent led activation working) but siren does not go off. Furthermore, with the alarm on, an intrusion attempt is indicated only by the flashing of the turn signals, without an accompanying acoustic signal from the siren.
The alarm system is managed by the body computer node, which controls the acoustic signal siren.
| Results of the tests | ||||
| 0 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|---|---|---|---|
| Connect the diagnostic equipment to the body computer node and check that the alarm system configuration has been correctly programmed while in parameter mode. | Continue to Step 1 | Alarm siren control unit absent. | Check car compliance. | |
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Keep the Examiner connected and check for errors in the antitheft siren control unit. | Continue to Step 2 | Error found: siren anomaly | Check that the connector on the antitheft siren control unit is correctly connected. | |
| A-Bus serial line with open circuit. | Restore A-Bus serial line continuity/insulation See E7015 ALARM | |||
| 2 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Keep the Examiner connected and carry out active diagnosis on the antitheft siren control unit. | Continue to Step 3 | Antitheft siren control unit not working. | Change the antitheft siren control unit (Op. 5580E46) | |
| 3 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Change the body computer node (Op. 5505A32) Search for the fault starting from another symptom' | |
Parts & tools for this job For 2001 Fiat Stilo
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLSocket setSearch: socket set metric
- BOOKHaynes manualSearch: Haynes manual Fiat Stilo
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