Siren operation check
- Make
- Fiat
- Model
- Bravo Factory Service Manual
- Year
- 2007–2014
- Section
- Special accessories › Siren operation check
SIREN OPERATION CHECK
| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
|---|---|---|
| 1 | Siren power supply check Connect an Examiner in Voltmeter mode with the positive probe to pin 1 ( +30 ) and the negative earthed and read a direct voltage of approximately 12 Volts | Restore the wiring between the Body Computer node and the siren control unit at pin 1. Replace fuse F39 in the dashboard control unit, having ascertained what caused it to blow |
| 2 | A-Bus serial line check Disconnect the wiring connector for the siren and the Body Computer connector Connect an Examiner in Ohmmeter mode. Check the continuity of the wiring between pin 2 of the siren connector and the Body Computer. Check the insulation of the earth line | Restore wiring continuity Restore wiring insulation If the checks at points 1 and 2 give normal results Replace the siren Op. 5580E40 If the siren is OK, replace the Body Computer |
| 3 | Check earth connection Disconnect the wiring connector for the siren Connect an Examiner in Ohmmeter mode between pin 3 and earth, and check that the resistance is less than 1 Ohm | Restore the correct earth connection (left-hand front engine compartment) |
| Siren pinout | |
|---|---|
| Pin 1 | Fuel system |
| Pin 2 | Serial line |
| Pin 3 | Earth |
| Pin 4 | N.C. |
Siren
Parts & tools for this job For 2007 Fiat Bravo
- TOOLDigital multimeterSearch: automotive digital multimeter
- PARTAssorted fuse kitSearch: car fuse assortment kit
- TOOLWire crimper and connector kitSearch: wire crimper connector kit
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