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. Check for poor or loose connections between the VSA modulator-control unit and the active damper control unit.�
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, or substitute a known-good VSA modulator-control unit Service and Repair, then go to step 1 and recheck. If the VSA modulator-control unit was updated and DTCs are not indicated, troubleshooting is complete. If the VSA modulator-control unit was substituted and DTCs are not indicated, replace the original VSA modulator-control unit Service and Repair.�
NO -
Replace the original active damper control unit Service and Repair.�