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Home >> Volvo >> 2007 >> S40 Base, 2.4 38, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 8 Of 10 (544 Body) >> ECM-820A: System Relay. Faulty Signal (B5244S4; 2004-2010) >> Faulty Signal (2008, 2009, 2010) >> Checking The Component And Wiring

Checking The Component And Wiring

Check the cable between engine control module (ECM) terminal #B16 (#C16) and system relay terminal #2. Check for a short-circuit to supply voltage. Check for short-circuit to ground.

Remedy as necessary.

Other information 

Fig 1: Identifying Ohm Meter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Battery
GLL101059Courtesy of VOLVO CARS OF NORTH AMERICA.