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. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

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

4. Test-drive the vehicle around corners at 10 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 DTS. Initial Inspection and Diagnostic Overview

Is any DTC indicated?
YES - Go to the indicated VSA system DTC's troubleshooting.

NO - Go to step 7.


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

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

9. Turn the ignition switch to ON (II).

10. Clear the DTC with the HDS.

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

12. Test-drive the vehicle around corners at 10 mph (15 km/h) or more.

13. Check for DTCs with the HDS.

Is DTC 3-4 indicated?
YES - Replace the VSA modulator-control unit. Service and Repair

NO - Replace the original active damper control unit. Service and Repair