Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 147 Factory Service Manual (2000-2004)22 · Fault diagnosis
22 · Diagnostics

Alarm siren not working

Make
Alfa Romeo
Model
147 Factory Service Manual
Year
2000–2004
Section
Alarm › Alarm siren not working
Fault diagnosisAlarm siren not working

ALARM SIREN NOT WORKING

When the alarm is operated the siren does not emit auditory signals

Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

The auditory signals may or may not be activated, according to the various country modes. For more details Characteristic of working principle 5580E anti-theft device

Connect the diagnostic equipment to the diagnostic socket and check whether there are faults on the CAN network

Continue to Step 2Presence of faults in the CAN networkRestore the connections on the nodes concerned
2ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the diagnostic equipment, carry out the active diagnosis of the sirenSiren not activatedContinue to Step 3
3CHECK ON ALARM ELECTRICAL CIRCUITAll OKProblems metOperation

Check, in order:

  • Supply and earth of siren
  • Continuity and insulation of alarm electrical circuit wiring diagram See E7015 ALARM
Continue to Step 4Connections not correctRenew the electrical connections See E7015 ALARM
4CHECK ON SIRENAll OKProblems metOperation
Check that the alarm system siren is workingContinue to Step 5Siren not workingReplace the siren Op. 5580E40
5CORRECT OPERATION CHECKAll OKProblems metOperation
Check that the fault is no longer presentContinue to Step 6Siren not workingReplace the Body Computer Op. 5505A32
6CORRECT OPERATION CHECKAll OKProblems metOperation
Check that the fault is no longer presentFault persistsSearch for the fault starting from another symptom'

Parts & tools for this job For 2000 Alfa Romeo 147

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