- Clearing zero point calibration data and system information
- Yaw rate and acceleration sensor zero point calibration and store system information
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIVC |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: CALIBRATION; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
CALIBRATION
1. DESCRIPTION
- After replacing any VSC related components or performing a front wheel alignment adjustment, clear and read the sensor calibration data and system information.
- Follow the chart below to perform calibration.
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Parts to be Replaced / Operation |
Necessary Operation |
|---|---|
|
Brake actuator assembly (Skid control ECU) |
Yaw rate and acceleration sensor zero point calibration and store system information |
|
Yaw rate and acceleration sensor |
|
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Front wheel alignment adjustment |
|
2. PERFORM YAW RATE AND ACCELERATION SENSOR ZERO POINT CALIBRATION AND STORE SYSTEM INFORMATION (When Using the Techstream)
NOTICE:
- Stored system information cannot be overwritten unless it is cleared. Clear the stored information and then store new system information.
- While obtaining the zero points, keep the vehicle stationary and do not vibrate, tilt, move or shake it. (Do not start the engine.)
- Be sure to perform this procedure on a level surface with an inclination of less than 1 degree.
(a) Clear the zero point calibration data and system information.
NOTICE:
Performing the following procedure will clear the zero points of the yaw rate and acceleration sensor and system information simultaneously.
(1) Turn the ignition switch off.
(2) Check that the steering wheel is centered.
(3) Check that the shift lever is in P.
(4) Connect the Techstream to the DLC3.
(5) Turn the ignition switch to ON.
(6) Turn the Techstream on.
(7) Select the skid control ECU to clear the zero point calibration data using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Reset Memory.
(8) Turn the ignition switch off.
NOTICE:
- If the vehicle is driven after the zero point of the yaw rate and acceleration sensor and system information are cleared, DTCs will be stored.
- If the ignition switch is turned to ON for more than 15 seconds with the shift lever in P after the zero points of the yaw rate and acceleration sensor have been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the indicator lights.
(b) Perform the yaw rate and acceleration sensor zero point calibration and store system information.
NOTICE:
Performing the following procedure will perform the yaw rate and acceleration sensor zero point calibration and store system information simultaneously.
(1) Turn the ignition switch off.
(2) Check that the steering wheel is centered.
(3) Check that the shift lever is in P.
NOTICE:
- DTCs C1210 (Zero Point Calibration of Yaw Rate Sensor Undone) and C1336 (Zero Point Calibration of Acceleration Sensor Undone) will be recorded if the shift lever is not in P.
- If a DTC is stored that indicates zero point calibration is incomplete, repeat the procedure starting at the step for clearing the zero point calibration data and system information.
(4) Connect the Techstream to the DLC3.
(5) Turn the ignition switch to ON.
(6) Turn the Techstream on.
(7) Switch the skid control ECU to Test Mode using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Signal Check.
(8) After Test Mode has been entered, keep the vehicle stationary on a level surface for 5 seconds or more.
(9) Check that the ABS warning and SLIP indicator lights come on for several seconds and then blink in Test Mode.
HINT:
- If the ABS warning and SLIP indicator lights do not blink, perform zero point calibration again.
- The zero point calibration is performed only once after the system enters Test Mode.
- Calibration cannot be performed again until the stored data is cleared.
(10) Turn the ignition switch off and disconnect the Techstream.
3. PERFORM YAW RATE AND ACCELERATION SENSOR ZERO POINT CALIBRATION AND STORE SYSTEM INFORMATION (When not Using the Techstream)
NOTICE:
- Stored system information cannot be overwritten unless it is cleared. Clear the stored information and then store new system information.
- While obtaining the zero points, keep the vehicle stationary and do not vibrate, tilt, move or shake it. (Do not start the engine.)
- Be sure to perform this procedure on a level surface with an inclination of less than 1 degree.
(a) Clear the zero point calibration data and system information.
NOTICE:
Performing the following procedure will clear the zero points of the yaw rate and acceleration sensor and system information simultaneously.
(1) Turn the ignition switch off.
(2) Check that the steering wheel is centered.
(3) Check that the shift lever is in P.
(4) Turn the ignition switch to ON.
(5) The warning light and indicator light come on for 3 seconds to indicate that the initial check is completed.
(6) Using SST, connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds.
SST: 09843-18040
Text in Illustration
|
*a |
Front view of DLC3 |
(7) Check that the ABS warning and SLIP indicator lights come on.
NOTICE:
- If the vehicle is driven after the zero point of the yaw rate and acceleration sensor and system information are cleared, DTCs will be stored.
- If the ignition switch is turned to ON for more than 15 seconds with the shift lever in P after the zero points of the yaw rate and acceleration sensor have been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the indicator lights.
(b) Perform the yaw rate and acceleration sensor zero point calibration and store system information.
NOTICE:
Performing the following procedure will perform the yaw rate and acceleration sensor zero point calibration, and also store system information simultaneously.
(1) Turn the ignition switch off.
(2) Check that the steering wheel is centered.
(3) Check that the shift lever is in P.
NOTICE:
- DTCs 36 (Zero Point Calibration of Yaw Rate Sensor Undone) and 98 (Zero Point Calibration of Acceleration Sensor Undone) will be recorded if the shift lever is not in P.
- If a DTC is stored that indicates zero point calibration is incomplete, repeat the procedure starting at the step for clearing the zero point calibration data and system information.
(4) Using SST, connect terminals TS and CG of the DLC3.
SST: 09843-18040
Text in Illustration
|
*a |
Front view of DLC3 |
(5) Turn the ignition switch to ON.
(6) After Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.
(7) Check that the ABS warning and SLIP indicator lights come on for several seconds and then blink in Test Mode.
HINT:
- If the ABS warning and SLIP indicator lights do not blink, perform zero point calibration again.
- The zero point calibration is performed only once after the system enters Test Mode.
- Calibration cannot be performed again until the stored data is cleared.
(8) Turn the ignition switch off and disconnect SST from the DLC3.
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