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Programming and Relearning


YAW RATE / DECELERATION SENSOR ZERO POINT CALIBRATION

HINT:
- When having replaced the yaw rate sensor, deceleration sensor or 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 connect and disconnect between terminals Ts and E1 of DLC1 4 times or more within 8 sec.
Check that the VSC TRAC 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 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 lit VSC TRAC warning light goes off about 15 Sec. after the ignition switch is turned ON.

HINT: Even if the ignition switch 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 TRAC warning light is lit for 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., make sure that the light blinks 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 TRAC 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 terminals Ts and E1 of DLC1.
SST 09843 - 18020
2. Turn the ignition switch ON.

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

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