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Home >> Lexus >> 2023 >> RC F Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Circuit Tests (3 Of 3) & Symptom Tests (1 Of 2) >> SFI System >> Pattern Select Switch Launch Control Circuit [03/2019 - 09/2020] >> Description

Pattern Select Switch Launch Control Circuit [03/2019 - 09/2020]: Description

When launch control is started, the TCM sends an engine torque control signal via CAN communication to the ECM, and the ECM restricts the opening angle of the throttle actuator.

As the throttle valve angle and engine output are restricted during launch control, wheel spin is minimized and start-off performance is improved.