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 a 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 (yaw rate sensor communication trouble) and U0124/95 (acceleration sensor communication trouble) are output.
These DTCs are also output when calibration has not been completed.





HINT:
If these codes (C1210/36 and/or C1336/39) are output, the following situations will occur.
- The VSC OFF and SLIP indicator lights will come on.
- Control of all systems other than ABS, EBD, and BA is canceled.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTE: When replacing the master cylinder solenoid, perform zero point calibration Programming and Relearning.

HINT: When U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 is output together with C1210/36 or C1336/39, inspect and repair the trouble areas indicated by U0073/94, U0100/65, U0123/62, U0124/95 or U0126/63 first.

PROCEDURE

1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR
NEXT -- Continue to next step.

2. RECONFIRM DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Check if the same DTCs are detected Reading and Clearing Diagnostic Trouble Codes.
Result:





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

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

3. CHECK SENSOR INSTALLATION
(a) 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 -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - PARK/NEUTRAL POSITION SWITCH)




(a) Disconnect the skid control ECU connector and park/neutral position switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY
OK -- Continue to next step.

6. REPLACE YAW RATE AND ACCELERATION SENSOR
(a) Replace the yaw rate and acceleration sensor C1232.
NEXT -- Continue to next step.

7. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR
NEXT -- Continue to next step.

8. RECONFIRM DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Check if the same DTCs are detected Reading and Clearing Diagnostic Trouble Codes.

HINT: Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.

Result:





B -- END
A -- REPLACE MASTER CYLINDER SOLENOID