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Home >> Volvo >> 2009 >> S40 Base, 2.4 38, Standard >> Repair and Diagnosis >> Electrical >> Body Electrical >> Accessory Electronic Module (AEM) And Central Electronic Module (CEM) Diagnostic Trouble Codes (544 Body) >> CEM-1A41: Ignition Switch. Faulty Signal (2006-2011) >> Faulty Signal (2006, 2007) >> Fault-Tracing >> Replacing Start Control Unit (SCU)

Replacing Start Control Unit (SCU)

Fig 1: Identifying Ignition In Off Position
GLL101046Courtesy of VOLVO CARS OF NORTH AMERICA.

The problem indicates that the control module is defective and needs to be replaced.

Other information 

Fig 2: Identifying Start Control Unit (SCU)
GLL117646Courtesy of VOLVO CARS OF NORTH AMERICA.