Zero Point Calibration of Yaw Rate Sensor Undone - Vehicle Stability Control System (from 12/2010)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1210/36,C1336/39: Zero Point Calibration of Yaw Rate Sensor Undone
C1336/39 - Zero Point Calibration of Acceleration Sensor Undone

DESCRIPTION

The ABS & TRACTION actuator assembly receives signals from the yaw rate sensor (acceleration sensor) via CAN communication system.

The yaw rate sensor has the built-in acceleration sensor.

If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, the DTCs U0123/62 (lost communication with the yaw rate sensor module) and U0124/95 (lost communication with the lateral acceleration sensor module) are output.

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





INSPECTION PROCEDURE

NOTICE:
When replacing the ABS & TRACTION actuator assembly, perform zero point calibration Calibration (from 12/2010).

HINT
When U0123/62, U0124/95 or U0126/63 is output along with C1210/36 or C1336/39, inspect and repair the trouble areas indicated by U0123/62, U0124/95 or U0126/63 first.

PROCEDURE

1. CHECK SENSOR INSTALLATION

(a) Check that the yaw rate and acceleration sensor has been installed properly Installation (from 12/2010).

OK:

The sensor should be tightened to the specified torque.

The sensor should not be tilted.

NG -- INSTALL YAW RATE SENSOR CORRECTLY
OK -- Continue to next step.

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

(a) Perform the zero point calibration of the yaw rate sensor and acceleration sensor Calibration (from 12/2010).

NEXT -- Continue to next step.

3. RECONFIRM DTC

(a) Clear the DTC.

(b) Start the engine.

(c) Drive the vehicle and turn the steering wheel to the right and left at a speed of 24 mph (38 km/h) or more.

(d) Check that the same DTCs are recorded.

HINT
Reinstall the sensors, connectors, etc. and restore the vehicle to its prior conditions before rechecking for DTCs.

Result:





HINT
* The DTCs are recorded because zero point calibration has not been completed.
* End the procedure since the same DTCs are not recorded after completion of zero point calibration.
* If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step Problem Symptoms Table (from 12/2010).

B -- REPLACE ABS & TRACTION ACTUATOR ASSEMBLY

A -- END