Toyota Sienna Service Manual: Zero Point Calibration of Yaw Rate Sensor Undone

DESCRIPTION

The skid control ECU receives signals from the yaw rate sensor via CAN communication system.

Yaw rate sensor has the built-in deceleration sensor.

If there is trouble in the bus lines between the yaw rate and deceleration sensor and CAN communication system, the DTC U0123/62 (yaw rate sensor communication trouble) and U0124/95 (deceleration sensor communication trouble) are output.

The DTC is also output when the calibration has not been completed.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT: When U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 are output accompanied with C1210/36 or C1336/39, inspect and repair the trouble areas indicated by U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 first.

1 PERFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSOR

(a) Perform the zero point calibration of the yaw rate and deceleration sensor (See page BC-70).

2 RECONFIRM DTC

(a) Clear the DTCs (See page BC-82).

(b) Turn the ignition switch to the ON position.

(c) Are the same DTCs recorded (See page BC-82).

Result

3 CHECK YAW RATE AND DECELERATION SENSOR INSTALLATION

(a) Check that the yaw rate and deceleration sensor has been installed properly (See page BC-197).

NOTICE: When replacing the yaw rate and deceleration sensor, perform zero point calibration (See page BC- 70).

REPLACE YAW RATE AND DECELERATION SENSOR