VSC Sensor Check (Test Mode)

VSC SENSOR CHECK (TEST MODE)

(a) In case of not using LEXUS hand-held tester: Check the VSC sensor signal.
(1) Turn the ignition switch OFF.
(2) Check that the shift lever position is at P range, turn the steering wheel to the neutral position.

(3) Using SST, connect terminals Ts and E1 of DLC1. SST 09843-18020
(4) Start the engine.

(5) 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.

(6) 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.
(7) 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.

(8) Check the yaw rate sensor.
Shift the shift lever to the D range and drive the vehicle at the vehicle speed of approx. 5 km/h (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:
- Drive the vehicle circularly by 1800. At the end of the turn, the direction of the vehicle should be within 180° ± 50° of its start position.
- Do not spin the rear wheels.
(9) Using SST connect terminals Tc and E1 of DLC1. SST 09843-18020
(10) Read the number of blinks of the VSC warning light.

HINT:
- See the list of DTC shown on step (c).
- If every sensor is normal, a normal code is output. (A cycle of 0.25 sec. ON and 0.25 sec. OFF is repeated.)

- If 2 or more malfunctions are indicated at the same time, the lowest numbered code will be displayed 1st.

(11) After doing the check, disconnect the SST from terminals Ts and E1, Tc and E1 of DLC1, and turn ignition switch OFF. SST 09843-18020
(b) In case of using LEXUS hand-held tester: Check the VSC sensor signal.

(1) Hook up the LEXUS hand-held tester to the DLC3.
(2) Do steps (2) and (4) - (8), as shown above.
(3) Read the DTC by following the prompts on the tester screen.

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