False alarm

Symptom: Alarm sounds falsely (without any break in attempt)

False alarm

Fault symptom

Alarm sounds falsely (without any break in attempt)

Diagnostic procedure

1 Check the cause of the alarm

-	Connect the ISAT scan tool.

-	Select "READ VALUES".

-	Select "LAST ALARM CAUSE".

Is the cause of the alarm registered?

yes

Continue fault diagnosis of the indicated fault symptom

no

See "Before replacing a control module".