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DTC 131: Yaw Rate Sensor Malfunction

NOTE:
  • Driving on an extremely angled or crowned road can cause this DTC.
  • Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  2. Check for DTCs with the HDS.

    Is DTC 86 indicated with DTC 131 at the same time? 

    YES  -Do the DTC 86 troubleshooting (see DTC 86: F-CAN COMMUNICATION MALFUNCTION  ).

    NO  -Go to step 3.

  3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  4. Check that the yaw rate-acceleration sensor is properly mounted (see YAW RATE-ACCELERATION SENSOR REPLACEMENT  ).

    Is the yaw rate-acceleration sensor installation OK? 

    YES  -Go to step 5.

    NO  -Reinstall the yaw rate-acceleration sensor (see YAW RATE-ACCELERATION SENSOR REPLACEMENT  ), and retest by test-driving.

  5. Put the vehicle on a level surface.
  6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  7. Check the YAW RATE SENSOR in the VSA DATA LIST with the HDS.

    Is the YAW RATE 0°±5°/s? 

    YES  -Go to step 8.

    NO  -Replace the yaw rate-acceleration sensor (see YAW RATE-ACCELERATION SENSOR REPLACEMENT  ).

  8. Clear the DTC with the HDS.
  9. Test-drive the vehicle around a number of corners.
    NOTE: Drive the vehicle on the road, not on a lift.
  10. Check for DTCs with the HDS.

    Is DTC 131 indicated? 

    YES  -Go to step 11.

    NO  -Intermittent failure, the system is OK at this time. Refer to INTERMITTENT FAILURES TROUBLESHOOTING  (see ).

  11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  12. Substitute a known-good yaw rate-acceleration sensor (see YAW RATE-ACCELERATION SENSOR REPLACEMENT  ).
  13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  14. Clear the DTC with the HDS.
  15. Test-drive the vehicle around a number of corners.
    NOTE: Drive the vehicle on the road, not on a lift.
  16. Check for DTCs with the HDS.

    Is DTC 131 indicated? 

    YES  -Go to step 17.

    NO  -Replace the original yaw rate-acceleration sensor (see YAW RATE-ACCELERATION SENSOR REPLACEMENT  ).

  17. Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE  ).
  18. Test-drive the vehicle around a number of corners.
    NOTE: Drive the vehicle on the road, not on a lift.
  19. Check for DTCs with the HDS.

    Is DTC 131 indicated? 

    YES  -Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION  ).

    NO  -If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING .

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