DTC 131: Yaw Rate Sensor Malfunction

NOTE:

Driving on an extremely angled 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 ).

Turn the ignition switch to ON (II).
Check for DTCs with the HDS.
Is DTC 91 indicated with DTC 131 at the same time?

YES -Do the DTC 91 troubleshooting (see DTC 91: VSA ACTIVATION TIME TOO LONG ).

NO -Go to step 3.
Turn the ignition switch to LOCK (0).
Check that the yaw rate-lateral/longitudinal acceleration sensor is properly mounted (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).
Is the yaw rate-lateral/longitudinal acceleration sensor installation OK?

YES -Go to step 5.

NO -Reinstall the yaw rate-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ), and retest by test-driving.
Put the vehicle on a level surface.
Turn the ignition switch to ON (II).
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-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).
Clear the DTC with the HDS.
Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.
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 INTERMITTENT FAILURES ).
Turn the ignition switch to LOCK (0).
Substitute a known-good yaw rate-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 131 indicated?

YES -Go to step 17.

NO -Replace the original yaw rate-lateral/longitudinal acceleration sensor (see YAW RATE-LATERAL/LONGITUDINAL ACCELERATION SENSOR REPLACEMENT ).
Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.
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 .