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Home >> Lexus >> 1997 >> LS 400 >> Repair and Diagnosis >> Brakes >> Traction Control >> Traction Control System >> Circuit Tests >> DTC 24: TRAC Sub-Throttle Actuator Circuit (1997) >> Circuit Description

Circuit Description

On all models except LS400, sub-throttle actuator operates in accordance with signals from ECU. ECU controls opening and closing of sub-throttle valve. On LS400, sub-throttle actuator operates in accordance with signals from throttle valve motor driver. Throttle valve motor driver controls opening and closing of sub-throttle valve. DTC is set when ECU detects open or short in sub-throttle actuator circuit. Possible causes are:

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