Diagnostic Trouble Code (DTC) Information CEM-1A08

Condition 

Fig 1: Identifying Central Electronic Module (CEM)

Courtesy of VOLVO CARS CORPORATION

The central electronic module (CEM) monitors the cable for 50-supply from the ignition switch.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers an open-circuit in the cable for the 50-supply.

The diagnostic trouble code (DTC) can be diagnosed at ignition switch position III (start attempt).

Substitute Value 

• None.

Possible Source 

• Open-circuit in the 50-supply cable
• Damaged ignition switch.

Fault symptom[s] 

• The starter motor does not turn.