Diagnostic trouble code (DTC) information CEM-4F47

Condition 

Fig 1: Identifying Left Camera Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) controls communication with the blind spot indication system (BLIS) camera modules.

If the central electronic module (CEM) detects an internal fault on the left camera module (LCM) a diagnostic trouble code is generated.

The diagnostic trouble code can be diagnosed when the ignition is on.

Substitute Value 

• Nothing.

Possible Source 

• Dirty lens.
• Loose connection or oxidation in signal connections to Left Camera Module (LCM).
• Internal fault in left camera module (LCM).

Fault symptom[s] 

• The LED does not come on.
• LED flashing rapidly.