Diagnostic Trouble Code (DTC) Information CEM-6F12

Condition 

Fig 1: Identifying Sun Roof Module (SRM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) communicates with the sun roof module (SRM).

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers a short-circuit to ground in the global opening / closing circuit for the sun roof or an open-circuit.

The diagnostic trouble code (DTC) can be diagnosed at key positions I and II.

Substitute Value 

• None.

Possible Source 

• Short-circuit to ground in the signal cable
• Open-circuit in the signal cable for global opening / closing.

Fault symptom[s] 

• Automatic sun roof closure does not function.