C1210

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: 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 C1336/98 - Zero Point Calibration of Acceleration Sensor Undone

DESCRIPTION

The skid control ECU receives signals from the yaw rate and acceleration sensor through 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 trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123/62 (Lost Communication with Yaw Rate Sensor Module) and U0124/95 (Lost Communication with Lateral Acceleration Sensor Module) are output.
The DTCs are also output when the calibration has not been completed.






INSPECTION PROCEDURE
NOTE:
When replacing the skid control ECU, perform zero point calibration and store system information Testing and Inspection.
HINT: When U0123/62, U0124/95 and/or U0126/63 is output together with C1210/36 and/or C1336/98, inspect and repair trouble areas indicated by U0123/62, U0124/95 and/or U0126/63 first DTC 94.

PROCEDURE

1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR
(a) Perform zero point calibration of the yaw rate and acceleration sensor Testing and Inspection.
NEXT -- Continue to next step.

2. RECONFIRM DTC
(a) Turn the engine switch off.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Start the engine.
(d) Driving the vehicle at a speed of 30 km/h (18 mph) or more, turn the steering wheel, and decelerate (depress the brake pedal).
(e) 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 engine switch off.
(b) Check that the yaw rate and acceleration sensor has been installed properly Installation.
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 SKID CONTROL ECU