8-3

Active Damper System DTC Troubleshooting: 8-3

DTC 8-3:

Sensor Reference Voltage Malfunction (HVCC Line)

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 8-3 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Check for poor or loose connections between the suspension stroke sensor, the headlight leveling control unit, and the active damper control unit.�

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

7. Disconnect the headlight leveling control unit 16P connector Testing and Inspection.

8. Disconnect the left-front suspension stroke sensor 3P connector.

9. Disconnect active damper control unit connector B (14P) connector Service and Repair.

10. Check for continuity between body ground and active damper control unit connector B (14P) terminal No. 6.





Is there continuity?

YES -

Repair a short to body ground in the wire between the left-front suspension stroke sensor, the headlight leveling control unit, and the active damper control unit.�

NO -

Go to step 11.

11. Check for continuity between headlight leveling control unit 16P connector terminals No. 4 and No. 13, and terminals No. 12 and No. 13 individually.





Is there continuity?

YES -

Repair a short between the wires (SVCC line and SG line).�

NO -

Go to step 12.

12. Reconnect all connectors.

13. Start the engine, and wait 5 seconds.

14. Check the HVCC VOLTAGE in the ACTIVE DAMPER SYSTEM DATA LIST with the HDS.

Is there 4.36 V or more indicated?

YES -

Replace the active damper control unit Service and Repair.�

NO -

Go to step 15.

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

16. Substitute a known-good headlight leveling control unit Testing and Inspection.

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

18. Clear the DTC with the HDS.

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

20. Start the engine, and wait 5 seconds.

21. Check for DTCs with the HDS.

Is DTC 8-3 indicated?

YES -

Replace the active damper control unit Service and Repair.�

NO -

Replace the original headlight leveling control unit Testing and Inspection.�