7-9

Active Damper System DTC Troubleshooting: 7-9

DTC 7-9: Active Damper Control Unit Internal Circuit Malfunction

NOTE: If DTC 5-5, DTC 5-6, DTC 5-7, or DTC 5-8 stored at the same time as DTC 7-9, troubleshoot DTC 5-5, DTC 5-6, DTC 5-7, or DTC 5-8 first, then recheck for DTC 7-9.

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

2. Clear the DTC with the HDS.

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

4. Start the engine, and wait 5 seconds.

5. Check for DTCs with the HDS.

Is DTC 7-9 indicated?
YES - Go to step 6

NO - Intermittent failure, the system is OK at this time. Check for poor or loose connections between the damper coil and the active damper control unit.


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

7. Disconnect active damper control unit connector A (20P).

8. Check for continuity between the active damper control unit connector A (20P) terminals individually (see table).





Is there continuity?
YES - Replace the active damper control unit, Service and Repair then go to step 11.

NO - Go to step 9






9. Disconnect the appropriate damper coil 2P connectors.

10. On the damper, check for continuity between damper coil 2P connector terminals No. 1 and No. 2 for all four dampers.

Is there continuity?
YES - Repair open in the wire between the damper coil and active damper control unit, then go to step 11.

NO - Replace the damper unit: Front, Front Damper/Spring Removal and Installation rear, Rear Suspension then go to step 11.






11. Reconnect all connectors.

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

13. Clear the DTC with the HDS.

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

15. Start the engine.

16. Do the DAMPER FORCE OPERATION in the ACTIVE DAMPER SYSTEM INSPECTION MENU with the HDS.

17. Check for DTCs with the HDS.

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

NO - Troubleshooting is complete.