LEMON Manuals: Even more car manuals for everyone
Home >> Volvo >> 2009 >> XC90 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 5 Of 13 >> ECM-431D: Leak Diagnostic Unit. Faulty Signal (B5254T2; 2003-2004) >> Fault-Tracing >> Checking Software

Checking Software

HINT: For vehicles of model year 2003-2005, 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: Identifying Ignition On Position
GLL101053Courtesy of VOLVO CARS CORPORATION

Has the latest software been downloaded to the control module?