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Home >> Volvo >> 2007 >> S40 Base, 2.4 38, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 6 Of 10 (544 Body) >> ECM-431D: Leak Diagnostic Unit. Faulty Signal (B5254T3; 2004) >> Fault-Tracing >> Checking Software

Checking Software

HINT: For vehicles of model year 2004-2008, the software in engine control module (ECM) should be checked before fault tracing of the fault relating to the leak from the tank system is carried out. 

Fig 1: Checking Traffic Load On CAN Cables
GLL101053Courtesy of VOLVO CARS OF NORTH AMERICA.

Has the latest software been downloaded to the control module?