Programming and Relearning

ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSORS

HINT:
- When having replaced the yaw rate sensor, deceleration sensor or/and the ECU, make sure to perform yaw rate and deceleration sensors zero point calibration.
- This operation is also required when the deceleration sensor or yaw rate sensor has been replaced since the calibrated zero point of both sensors will be erased.

NOTE:
- While obtaining the zero point, do not give any vibration to the vehicle by tilting, moving or shaking it and keep it in a stationary condition. (Do not start the engine.)
- Be sure to do this on a level surface (within an inclination of 1 %).




a. Clear the zero point of the yaw rate and deceleration sensors.
1. Shift the shift lever to P range.
2. Turn the ignition switch ON in a stationary condition.
3. With the ignition switch ON, using SST, repeat a cycle of short and open between terminals Ts and E1 of DLC1 4 times or more within 8 sec. Check that the VSC warning light is lit indicating the recorded zero point is erased.
SST 09843-18020
4. Turn the ignition switch OFF.

b. Obtain zero point of the yaw rate sensor.
1. Make the terminals Ts and E1 of DLC1 disconnected.
2. Turn the ignition switch ON.

HINT: The vehicle should be in a stationary condition with the shift lever in P range.

3. Check that the lighted VSC warning light goes off about 15 sec. after the ignition switch is turned ON.

HINT: Even if the ignition is not turned OFF in step (a)-(4) and remains ON, the yaw rate sensor zero point calibration can be completed. In this case, the VSC warning light is lit about 15 sec. and starts blinking. (Normal code)

4. After ensuring that the VSC warning light remains OFF for 2 sec., turn the ignition switch OFF.

HINT: If the ignition switch is not turned OFF in step (a)-(4), ensure the blinking light for 2 sec. and turn the ignition switch OFF.

c. Perform deceleration sensor zero point calibration.

NOTE: After step (b) (the yaw rate sensor zero point calibration), the VSC warning light goes off. At this time, if the vehicle is driven without performing step (C) (deceleration sensor zero point calibration), deceleration sensor zero point calibration malfunction will be detected and the VSC warning light will light up. Therefore, perform step (c) right after step (b).




1. Using SST, connect the terminals Ts and E1 of DLC1. SST 09843-18020
2. Turn the ignition switch ON.

HINT: Make the vehicle in a stationary condition with the shift lever in P range.




3. After turning the ignition switch ON, check that the VSC warning light is lit for about 4 sec. and then starts quick blinking at 0.13 sec. intervals.
4. After ensuring the blinking of the VSC warning light for 2 sec., turn the ignition switch OFF.
5. Remove the SST and make the terminals Ts and E1 of DLC1 disconnected.
SST 09843-18020