Diagnostic Trouble Code (DTC) Information AEM-6C56

Condition 

Fig 1: Accessory Electronic Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

The diagnostic trouble code (DTC) is stored if the control module registers that the signal is too low on the signal cable for alarm output S1.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on and alarm output S1 is activated.

Substitute Value 

• Alarm output S1 is switched off until the next time the ignition is switched on.

Possible Source 

• Short-circuit to ground in signal cable alarm output S1
• Damaged alarm.

Fault symptom[s] 

• The alarm does not function at all.