Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 156 Factory Service Manual (1997-2002)16 · Fault diagnosis
16 · Diagnostics

A01 Alarm does not turn on

Make
Alfa Romeo
Model
156 Factory Service Manual
Year
1997–2002
Section
Alarm › A01 Alarm does not turn on
Fault diagnosisA01 Alarm does not turn on

A01 Alarm does not turn on

When operating the alarm with the remote control:

  • the LED does not flash,
  • the doors. do not open/close
  • the lights do not flash
  • the siren does not emit auditory signals

NOTA: it is only possible to switch on the alarm with the ignition key in the OFF or PARK positions or with it extracted.

StepTest procedureResultAction
0PRELIMINARY CHECKS

WARNING: the auditory signals and the flashing of the direction indicators are either activated or not, according to the various country modes see DESCRIPTION AND OPERATION: 5580E Anti-theft device (see 5580EF)

Preliminarily check:

  • charge of remote control battery incorporated in the key
  • key correct, i.e. remote control enabled
OK

Move onto step 1

Remote control battery run down
  • Replace battery

End of diagnosis

Key not correct
  • Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket
  • Programme keys correctly.

End of diagnosis

1CHECK WITH DIAGNOSTIC EQUIPMENT

Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket

Check, in order:

  • no faults in the alarm control unit
  • no faults in the alarm receiver
OK

Move onto step 2

Error detected in the control unit or receiver
  • Continue according to the instructions for the diagnostic equipment

End of diagnosis

Dialogue failure for diagnostic equipment between the control unit and the receiver

End of diagnosis

2CHECK CONTROL UNIT OPERATION

It is also possible to carry out the fault diagnosis of the system by observing the behaviour of the LED when switching on and off: or, by carrying out a manual fault diagnosis of the system (see DESCRIPTION AND OPERATION: 5580E Anti-theft device ). (see 5580EF)

OK

Move onto step 3

An error is detected in the control unit
  • Restore the faulty components

End of diagnosis

3CHECK CORRECT OPERATION

Check that the fault is no longer present.

OK

End of diagnosis

Fault persists

Incorrect selection of diagnostic procedure

Parts & tools for this job Staging For 1997 Alfa Romeo 156

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.