Speed Sensor Signal Check (Test Mode)

Check the VSC sensor signal.




1. Hook up the LEXUS hand-held tester to the DLC3.
2. Check that the shift lever position is at P range, turn the steering wheel to the neutral position.
3. Start the engine.




4. Check that the VSC warning light blinks.

HINT: If the VSC warning light does not blink, inspect the VSC warning light circuit and Ts terminal circuit.

5. After a new ECU installed, the first time only:
Start the engine and keep the vehicle in the stationary condition on the flat place for 3 sec. or more, and check the zero point calibration of the yaw rate sensor.
6. Check the steering angle sensor.
Turn the steering wheel either to left or right for 450 ° or more from the vehicle stationary condition, and turn back the steering wheel to the straight ahead position.




7. Check the yaw rate sensor.
Shift the shift lever to the D range and drive the vehicle at the vehicle speed of approx. 5 KPH (3 MPH), turn the steering wheel either to left or right for 90 ° or more, and maintain 180 ° circular drive for the vehicle. Stop the vehicle and shift the shift lever to the P range, check that the VSC buzzer sounds for 3 sec.
If the VSC buzzer sounded, the sensor check is in normal completion.
If the VSC buzzer does not sound, do the sensor check again.
If the VSC buzzer still won't sound, there is malfunction in the VSC sensor, so check the DTC.

HINT: Please refer to the LEXUS hand-held tester operator's manual for further details.

8. Read the DTC by following the prompts on the tester screen.