With Scan Tool
CHECK VSC SENSOR SIGNALUsing LEXUS hand-held tester:
a. Hook up the LEXUS hand-held tester to the DLC3.
b. Procedures for test mode:
1. Check that the shift lever position is at P position, turn the steering wheel to the neutral position.
2. Start the engine.
c. When replacing yaw rate sensor and/or ECU, the first time only.
HINT: Before the yaw rate sensor zero point calibration, shift the shift lever to P position, turn the ignition switch ON, and repeat connecting and disconnecting between terminals Ts and E1 of DLC1 4 times or more for 8 sec. After this, leave the vehicle in stationary condition for 15 sec. and carry out the yaw rate sensor zero point calibration.
Place the vehicle on the horizontal surface and carry out the zero point calibration of the yaw rate sensor by turning the ignition switch ON.
HINT: After turning on the ignition switch, carry out the yaw rate sensor zero point calibration for 1 sec. while the vehicle is in the stationary condition.
d. When replacing deceleration sensor and/or ECU, the first time only.
HINT: Before the deceleration sensor zero point calibration, shift the shift lever to P position, turn the ignition switch ON, and repeat connecting and disconnecting between terminals Ts and E1 of DLC1 4 times or more for 8 sec. After this, leave the vehicle in stationary condition for 15 sec. and carry out the deceleration sensor zero point calibration.
Place the vehicle on the horizontal surface and carry out the zero point calibration of the deceleration sensor by turning the ignition switch ON.
HINT: After turning on the ignition switch, carry out the deceleration sensor zero point calibration for 2 sec. while the vehicle is in the stationary condition.
e. Check the steering angle sensor.
Turn the steering wheel either to left or right for 4500 or more from the vehicle stationary condition, and turn back the steering wheel to the straight ahead position.
f. Check the yaw rate sensor.
Shift the shift lever to the D position and drive the vehicle at the vehicle speed of approx. 5 kph (3 mph), turn the steering wheel either to left or right for 900 or more, and maintain 180° circular drive for the vehicle.
Stop the vehicle and shift the shift lever to the P position, 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 180°. 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.
g. Read the DTC by following the prompts on the tester screen.
HINT: Please refer to the LEXUS hand-held tester operator's manual further details.
DTC of the VSC sensor check function: