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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Engine Control System (8AR-FTS) - Diagnostic Codes (01 Of 14)) >> SFI System >> DTC P0033-12: Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Battery [08/2015 - 09/2022] >> Monitor Description

Monitor Description

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The ECM monitors the output voltage while the air by-pass valve assembly is operating.

The air by-pass valve assembly turns on and off according to switching of a transistor inside the ECM.

If a continuous mismatch occurs between the ECM transistor state and the output voltage, the ECM determines there is a malfunction in the air by-pass valve assembly circuit and stores this DTC.