Adaptive Cruise Control

Adaptive Cruise Control (ACC) DTC Troubleshooting: 24

DTC 24

Yaw Rate Sensor Diagnose Malfunction

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 24 indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the system is OK at this time.�

4. Check for VSA system DTCs with the HDS.

Are any DTCs indicated?

YES -

Troubleshoot the indicated VSA system DTC(s).�

NO -

Go to step 5.

5. Turn the ignition switch to LOCK (0).

6. Disconnect the yaw rate-lateral/longitudinal acceleration sensor 4P connector.

7. Disconnect the ACC unit 20P connector.

8. Wait for 30 seconds, then check for continuity between ACC unit 20P connector terminal No. 10 and yaw rate-lateral/longitudinal acceleration sensor 4P connector terminal No. 3, and between ACC unit 20P connector terminal No. 20 and yaw rate-lateral/longitudinal acceleration sensor 4P connector terminal No. 2.





Is there continuity?

YES -

Check for loose or poor connections. If OK, update the ACC unit Programming and Relearning, then recheck. If the ACC unit was already updated, replace the ACC unit Service and Repair.�

NO -

Repair an open in the wire between the ACC unit and the yaw rate-lateral/longitudinal acceleration sensor.�