VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1459

DTC Code DTC Name
C1459 Vertical Acceleration Sensor

DESCRIPTION

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

This DTC is output when the skid control ECU (brake actuator assembly) receives a malfunction signal from the roll rate and vertical acceleration sensor (yaw rate sensor).

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.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1459 Vertical Acceleration Sensor

Any of the following is detected:


  • An output malfunction occurs in the vertical acceleration sensor

  • A vertical acceleration sensor stuck malfunction signal is received

  • The acceleration value of the vertical acceleration sensor is continuously 1.401 G or more for 0.24 seconds or more

  • The acceleration value of the vertical acceleration sensor is continuously -1.405 G or more for 0.24 seconds or more

  • A data malfunction signal is received from the vertical acceleration sensor

  • The +BS terminal voltage is between 9.5 and 17.4 V and the information invalid signal received from the vertical acceleration sensor remains on for 10 seconds or more

  • At a vehicle speed of 3 km/h (2 mph) or higher, a vertical acceleration sensor power source malfunction signal is received for 10 seconds or more

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

  • Wire harness or connector

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

WIRING DIAGRAM

B00682BE24

CAUTION / NOTICE / HINT

Note


  • When replacing or reinstalling the roll rate and vertical acceleration sensor (yaw rate sensor), perform zero point calibration and store system information after clearing previously calibrated data.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

Tech Tips

When U110F is output together with C1459, inspect and repair the trouble areas indicated by U110F first.

Click here

PROCEDURE


  1. CHECK YAW RATE SENSOR INSTALLATION


    1. Check that the roll rate and vertical acceleration sensor (yaw rate sensor) has been installed properly.

      Click here

      OK
      The roll rate and vertical acceleration sensor (yaw rate sensor) is tightened to the specified torque.
      The roll rate and vertical acceleration sensor (yaw rate sensor) is not installed in a tilted position.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL YAW RATE SENSOR CORRECTLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (IGA TERMINAL)


    1. B0066ITC55
      *a

      Front view of wire harness connector

      (to Roll Rate and Vertical Acceleration Sensor (Yaw Rate Sensor))

      Make sure that there is no looseness at the locking part and the connecting part of the connector.

    2. Disconnect the E1 roll rate and vertical acceleration sensor (yaw rate sensor) connector.

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E1-4 (IGA) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGA CIRCUIT)

    OK

  3. CHECK HARNESS AND CONNECTOR (GNDA TERMINAL)


    1. B0066ITC56
      *a

      Front view of wire harness connector

      (to Roll Rate and Vertical Acceleration Sensor (Yaw Rate Sensor))

      Turn the engine switch off.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-1 (GNDA) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GNDA CIRCUIT)

    OK

  4. RECONFIRM DTC


    1. Reconnect the E1 roll rate and vertical acceleration sensor (yaw rate sensor) connector.

    2. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    3. Turn the engine switch off.

    4. Start the engine.

    5. Perform a road test.

    6. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC C1459 is not output. A
      DTC C1459 is output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE YAW RATE SENSOR Click here