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Home >> Audi >> 2013 >> S7 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> 4.0L - Generic Scan Tool - Engine Code(S): CEUC & CRDB (Transmission DTC Table & Diagnostic Procedures) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Fuel Metering Valve -N290-, CHECKING >> Function

Fuel Metering Valve -N290-, CHECKING: Function

The Engine Control Module (ECM) -J623- regulates Fuel Metering Valve -N290- directly at the High Pressure Fuel Pump to control the low pressure flow inside the High Pressure Fuel Pump.

Special tools and workshop equipment required 

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