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Home >> Volvo >> 2011 >> XC90 Base, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 7 Of 13 >> ECM-800B: System Relay. Signal Too Low (B5254T2; 2005-2007) >> Signal Too Low >> Verification >> Verification

Signal Too Low: Verification: Verification

HINT: After carrying out the repair, check that the fault has been remedied. 

Fig 1: Identifying Ignition ON
GLL101051Courtesy of VOLVO CARS CORPORATION

Is the voltage correct?