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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-1A25: Relay Ext X2-Power Supply. Signal Too Low. Intermittent Fault (Aw50/51 AWD; 2002-2004) >> Signal too low. Intermittent fault >> Checking the relay

Checking the relay

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Check that relay 2/101 is correctly installed.

Also check the relay terminals for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals) .

Other information 

Fig 1: Identifying Relays
GLL104067Courtesy of VOLVO CARS OF NORTH AMERICA.

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