saab Workshop Repair Guides

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Alarm Module: Testing and Inspection
Unable to Communicate with Control Module

If it proves impossible to communicate with the control module or if it is completely unserviceable (i.e. the alarm cannot be activated when the key in the
driver's door is turned to the anti-theft position), check the following points:

1

Fuses.

2

Power supply and grounding. 

3

Diagnostics socket.

4

Should the fault persist after the above checks have been carried out, continue as described in "Before Control Module Replacement".

Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Testing and Inspection > Unable to Communicate with Control Module

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