C1210

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM (for 2AZ-FE): C1210/36, C1336/39: Zero Point Calibration of Yaw Rate Sensor Undone
C1336/39 - Zero Point Calibration of Acceleration Sensor Undone

DESCRIPTION

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

The yaw rate sensor has a built-in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2). If there is a malfunction in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123/62 (yaw rate sensor communication trouble) and U0124/95 (acceleration sensor communication trouble) are output.

The DTCs are also output when the calibration has not been completed.





INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform zero point calibration Programming and Relearning.

HINT
When U0123/62, U0124/95 and/or U0126/63 is output together with C1210/36 and/or C1336/39, inspect and repair the trouble areas indicated by U0123/62, U0124/95 and/or U0126/63 first Control Module Communication Bus OFF - Vehicle Stability Control System.

PROCEDURE

1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR

(a) Perform zero point calibration of the yaw rate and acceleration sensor Programming and Relearning.

NEXT -- Continue to next step.

2. RECONFIRM DTC

(a) Turn the ignition switch off.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(c) Drive the vehicle at a speed of 30 km/h (19 mph) or more, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle.

(d) Check if the same DTC is recorded Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
* The DTCs are recorded because zero point calibration has not been completed.
* End the procedure because the same DTCs were not recorded after completion of zero point calibration.

B -- END
A -- Continue to next step.

3. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

(a) Turn the ignition switch off.

(b) Check that the yaw rate and acceleration sensor has been installed properly Installation.

OK:

The sensor is tightened to the specified torque.

The sensor is not installed in a tilted position.

NG -- INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Installation

OK -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal