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Home >> Volvo >> 2009 >> C70 Standard >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Central Electrical Module (CEM) And Rear Electrical Module (Rem) Diagnostic Trouble Codes >> CEM-DF11: Can-H, High Speed Network. Signal Missing >> Diagnostic Trouble Code (DTC) Information CEM-DF11

Diagnostic Trouble Code (DTC) Information CEM-DF11

Condition 

Fig 1: Identifying Central Electronic Module
GLL139910Courtesy of VOLVO CARS CORPORATION

The central electronic module (CEM) checks the voltage in CAN H in the high speed network.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers an open-circuit in CAN H in the high speed network.

The diagnostic trouble code (DTC) can be diagnosed with the ignition in positions I or II.

NOTE:

The central electronic module (CEM) is the only control module that monitors the voltage level in CAN H. The central electronic module (CEM) is hence the only control module that can directly store a diagnostic trouble code (DTC) for an open-circuit in this conductor. On the other hand, other control modules can store diagnostic trouble codes (DTCs) as a result of the open-circuit. Do not replace the central electronic module (CEM) in the event of a CAN fault unless VIDA fault-tracing has indicated that the central electronic module (CEM) has an internal fault.

Substitute Value 

Possible Source 

Fault symptom[s] 

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