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Home >> Volvo >> 2021 >> S90 T6 R-Design >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Intake And Exhaust System - Design >> (Throttle Unit) >> Throttle Unit (4/50) [2017-2022] >> Diagnostic Information

Diagnostic Information

The throttle unit does not have a built-in diagnostic system and is diagnosed by the Engine Control Module (ECM).

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