Home >> Audi >> 2014 >> S6 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> 4.0L - Generic Scan Tool - Engine Code: CEUC (Transmission DTC Table & Diagnostic Procedures) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Motronic Engine Control Module Power Supply Relay -J271 -, CHECKING >> Test Requirements