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Home >> Volvo >> 2002 >> S80 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Central Electronic Module (CEM), Rear Electronic Module (Rem), Upper Electronics Module (UEM) - Diagnostic Trouble Codes - 1 Of 13) >> CEM-1A03: S-Power Supply. Signal Too Low. Intermittent Fault (2001-2004) >> Signal too low. Intermittent fault >> Checking the connectors
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Checking the connectors

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2009 Volvo S60, 2008 Volvo S60, 2007 Volvo S60, 2006 Volvo S60, and 2005 Volvo S60. However, it is still accessible from the selected car via links, so may be relevant.

Check the central electronic module (CEM) connector for contact resistance and oxidation and remedy according to Contact resistance and oxidation and loose connections according to Loose connections (terminals) .

Check for damage carefully.

HINT: If the fault cause is found, reinstall the components, connectors etc. 

HINT: If the fault cause is not found, do not reinstall the control module before continuing with fault-tracing. 

Other information: 

Fig 1: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected?