Zero Point Calibration of Acceleration Sensor Undone - Electronically Controlled Brake System

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE 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 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 are any problems 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) will be output.
The DTCs will be also output when the calibration has not been completed.






INSPECTION PROCEDURE
NOTE: When replacing the skid control ECU, perform initialization and calibration of the linear solenoid valve. Initialization
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 Electronically Controlled Brake 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. Calibration
NEXT -- Continue to next step.
2. RECONFIRM DTC
(a) Turn the power switch off.
(b) Clear the DTCs.
(c) Turn the power switch on (READY).
(d) Drive the vehicle at a speed of 30 km/h (18 mph) or more, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle.
(e) Check if the same DTC is recorded.
Result:





HINT:
- The DTCs are recorded because zero point calibration has not been completed.
- End the procedure because 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 power switch off.
(b) Check that the yaw rate and acceleration sensor has been installed properly.
OK:
The sensor bolt 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