Zero Point Calibration of Acceleration Sensor Undone - Vehicle Stability Control System

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1210/36: Zero Point Calibration of Yaw Rate Sensor Undone

DTC C1210/36 - Zero Point Calibration of Yaw Rate Sensor Undone

DTC 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 the built in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2). If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, the 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
NOTE: When replacing the brake actuator assembly, perform zero point calibration .
HINT: When U0123/62, U0124/95 and/or U0126/63 is output along with C1210/36 and/or C1336/39, inspect and repair 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 .
NEXT -- Continue to next step.
2. RECONFIRM DTC
(a) Turn the ignition switch to OFF.
(b) Clear the DTC .
(c) At a speed of 30 km/h (19 mph) or more, drive the vehicle, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle.
(d) Check if the same DTC is recorded .
Result:





HINT:
- The DTCs are recorded because zero point calibration has not been completed.
- End the procedure as the same DTCs are 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 to OFF.
(b) Check that the yaw rate and acceleration sensor has been installed properly.
OK:
The sensor should be tightened to the specified torque.
The sensor should not be tilted.
NG -- INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY