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.

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.
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.

NO - Replace the original active damper control unit.