Home >> Volvo >> 2005 >> V70 Base, 2.5 59, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes (DTC) - 9 Of 14 >> ECM-630B: A/C Relay, Signal Missing, Intermittent Fault (B5244T5; B5254T2; B5254T4; 2005-2007) >> Signal missing, intermittent fault