3-4

Active Damper System DTC Troubleshooting: 3-4

DTC 3-4:

Wheel Speed Signal Malfunction (From VSA Modulator-Control Unit by F-CAN)

NOTE: If DTC 8-6 is stored at the same time as DTC 3-4, troubleshoot DTC 8-6 first, then recheck for DTC 3-4.

1. Press the engine start/stop button to select the ON mode.

2. Clear the DTC with the HDS.

3. Press the engine start/stop button to select the OFF mode.

4. Test-drive the vehicle around corners at 9 mph(15 km/h) or more.

5. Check for DTCs with the HDS.

Is DTC 3-4 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

6. Check for VSA system DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

Is any DTCs indicated?

YES -

Go to the indicated VSA system DTCs troubleshooting.

NO -

Go to step 7.

7. Press the engine start/stop button to select the OFF mode.

8. Substitute a known-good active damper control unit Service and Repair.

9. Press the engine start/stop button to select the ON mode.

10. Clear the DTC with the HDS.

11. Press the engine start/stop button to select the OFF mode.

12. Test-drive the vehicle around corners at 9 mph(15 km/h) or more.

13. Check for DTCs with the HDS.

Is DTC 3-4 indicated?

YES -

Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection. If the VSA modulator-control unit was updated and symptom/indication is still present, replace the VSA modulator-control unit Service and Repair.

NO -

Replace the original active damper control unit Service and Repair.