VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1460

DTC Code DTC Name
C1460 Zero Point Calibration of Vertical Acceleration Sensor undone

DESCRIPTION

The roll rate and vertical acceleration sensor is built into the yaw rate sensor.

The skid control ECU (brake actuator assembly) receives signals from the roll rate and vertical acceleration sensor via CAN communication.

Tech Tips

When a malfunction occurs in the communication line to the roll rate and vertical acceleration sensor (yaw rate sensor), U110F (Lost Communication With Roll Rate Sensor/Vertical Acceleration Sensor Module) is output.

If a DTC related to the CAN communication line is output, first troubleshoot the CAN communication line.

This DTC is output when roll rate and vertical acceleration sensor zero point calibration is incomplete.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
C1460 Zero Point Calibration of Vertical Acceleration Sensor undone Zero point calibration of the roll rate and vertical acceleration sensor is incomplete

  • Incorrect installation of roll rate and vertical acceleration sensor (yaw rate sensor)

  • Roll rate and vertical acceleration sensor (yaw rate sensor)

  • Skid control ECU (brake actuator assembly)

 -

CAUTION / NOTICE / HINT

Note


  • When replacing the skid control ECU (brake actuator assembly) or roll rate and vertical acceleration sensor (yaw rate sensor), perform zero point calibration and store system information.

    Click here

  • When replacing the roll rate and vertical acceleration sensor (yaw rate sensor), perform zero point calibration and store system information.

    Click here

Tech Tips

When U110F is output together with C1460, inspect and repair the trouble areas indicated by U110F first.

Click here

PROCEDURE


  1. PERFORM ZERO POINT CALIBRATION OF ROLL RATE AND VERTICAL ACCELERATION SENSOR


    1. Perform zero point calibration of the roll rate and vertical acceleration sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. RECONFIRM DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the engine switch off.

    3. Start the engine.

    4. Perform a road test.

    5. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC C1460 is not output. A
      DTC C1460 is output. B

    A

    END

    B

  3. CHECK YAW RATE SENSOR INSTALLATION


    1. Turn the engine switch off.

    2. Check that the acceleration sensor (yaw rate sensor) has been installed properly.

      Click here

      OK
      The sensor should be tightened to the specified torque.
      The sensor should not be installed in a tilted position.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL YAWRATE SENSOR CORRECTLY Click here

    OK

  4. READ VALUE USING GTS (ROLL RATE AND VERTICAL ACCELERATION SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Select the Data List using the GTS.

      Click here


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Lateral Acceleration Value Vertical acceleration sensor output value

      Min.: -25.10 m/s2

      Max.: 24.90 m/s2

      		During turning: Changes in proportion with acceleration -
      Upper and Lower Acceleration Value Upward and downward acceleration value

      Min.: -25.10 m/s2

      Max.: 24.90 m/s2

      With a 9.8 m/s2(gravitational acceleration) base value, the value increases with upward acceleration and decreases with downward acceleration

      		 -

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      Lateral Acceleration Value
      Upper and Lower Acceleration Value

    4. Check the roll rate and vertical acceleration sensor (yaw rate sensor) output value displayed on the GTS.

      OK
      The roll rate and vertical acceleration sensor (yaw rate sensor) output value is normal.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE YAWRATE SENSOR Click here