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Home >> Volvo >> 2007 >> S40 Base, 2.4 39, Automatic >> Repair and Diagnosis >> Electrical >> Body Electrical >> Accessory Electronic Module (AEM) And Central Electronic Module (CEM) Diagnostic Trouble Codes (544 Body) >> CEM-1C04: 30-Power Supply. Signal Too High (2004-2011) >> Signal Too High (2008, 2009) >> Checking >> Checking Wiring

Checking Wiring

Fig 1: Identifying Ignition OFF
GLL101045Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Disconnecting Connector
GLL101003Courtesy of VOLVO CARS OF NORTH AMERICA.