Home >> Volkswagen >> 2013 >> Passat TDI SEL >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> 3.6L - Generic Scan Tool - Engine Code: CDVB (Transmission DTC Tables & Diagnostic Procedures) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Motronic Engine Control Module Power Supply Relay -J271-, CHECKING >> Test Requirements