Troubleshooting

CIRCUIT DESCRIPTION
Magnetic clutch is mounted between the throttle motor and the valve, and it connects the throttle motor with the throttle valve.

Therefore, the throttle motor opens and closes the throttle valve through the magnetic clutch.

If the electric throttle control system has a malfunction, the magnetic clutch separates the throttle motor from the throttle valve in order not to operate the throttle valve by the throttle motor.

If this DTC is stored, the ECM shuts down the power for the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return spring.

However, the opening angle of the throttle valve can be controlled by the accelerator pedal through the throttle cable.




DETECTING CONDITIONS




WIRING DIAGRAM

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INSPECTION PROCEDURE

HINT: Read freeze frame data using LEXUS hand-held tester or OBD II scan tool. Because freeze frame records the engine conditions when the malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.