Home >> Volvo >> 2007 >> S60 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) - Diagnostic Trouble Codes And Associated Procedures - 9 Of 14 >> ECM-630D: A/C Relay. Signal Too Low. Permanent Fault (B5244T5; B5254T2; 2005-2009) >> Signal Too Low. Permanent Fault