Diagnostic Trouble Code (DTC) Information CEM-6C45

Condition 

Fig 1: Identifying Ignition Switch

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) checks the communication with the immobilizer antenna unit (IAU). The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers a fault in the communication with the immobilizer antenna unit (IAU).

The diagnostic trouble code (DTC) can be detected with the ignition on and if diagnostic trouble codes (DTCs) CEM-6C41 - CEM-6C44 are not stored during communication with the immobilizer antenna unit (IAU).

Substitute Value 

• None.

Possible Source 

• Temporary interference in the communication with the immobilizer antenna unit (IAU)
• Immobilizer antenna unit (IAU) not working.

Fault symptom[s] 

• The starter motor does not turn.