Diagnostic Trouble Code (DTC) Information CEM-B113D14

Condition 

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

Central electronic module (CEM) controls the function global / closing of window and sunroof. Central electronic module (CEM) sends request for global opening/closing of sunroof via directly connected signal cable to Sun roof module (SRM).

The diagnostic trouble code (DTC) is stored if the control module detects that:

• Signal too low from the output.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Control module supplied with power.

Substitute Value 

• The function switches off permanently after 100 operating cycles where the fault was detected. Erasing diagnostic trouble codes (DTCs) resets the result.

Possible Source 

• Short-circuit to ground in the cable.
• Open circuit on signal cable.

Fault symptom[s] 

• Power sun roof not working