1-1

Active Damper System DTC Troubleshooting: 1-1, 1-2, 1-3

DTC 1-1:

Front Vertical Acceleration Sensor Circuit High Voltage

DTC 1-2:

Right-Rear Vertical Acceleration Sensor Circuit High Voltage

DTC 1-3:

Left-Rear Vertical Acceleration Sensor Circuit High Voltage

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. Start the engine, and wait 5 seconds.

5. Check for DTCs with the HDS.

Is DTC 1-1, 1-2, or 1-3 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

6. Check for DTCs with the HDS.

Is only one DTC indicated?

YES -

Go to step 7.

NO -

Go to step 18.

7. Press the engine start/stop button to select the OFF mode.

8. Disconnect the appropriate vertical acceleration sensor 3P connector Service and Repair.





9. Press the engine start/stop button to select the ON mode.

10. Check the VERTICAL_S VOLTAGE (F), (RR), or (LR) in the ACTIVE DAMPER SYSTEM DATA LIST with the HDS.

Is there less than 1.0 V?

YES -

Go to step 11.

NO -

Go to step 14.

11. Press the engine start/stop button to select the OFF mode.

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

13. Check for continuity between active damper control unit connector B (14P) terminal No. 11 and appropriate vertical acceleration sensor 3P connector terminal No.2.









Is there continuity?

YES -

Replace the appropriate vertical acceleration sensor Service and Repair.

NO -

Repair an open in the wire between the appropriate vertical acceleration sensor and the active damper control unit.

14. Press the engine start/stop button to select the OFF mode.

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

16. Press the engine start/stop button to select the ON mode.

17. Measure the voltage between body ground and the appropriate active damper control unit connector B (14P) terminal individually.









Is there more than 0.5 V?

YES -

Repair a short to power in the wire between the appropriate vertical acceleration sensor and the active damper control unit.

NO -

Replace the active damper control unit Service and Repair.

18. Press the engine start/stop button to select the OFF mode.

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

20. Disconnect the appropriate vertical acceleration sensor 3P connector Service and Repair.






21. Check for continuity between active damper control unit connector B (14P) terminal No. 11 and appropriate vertical acceleration sensor 3P connector terminal No.2.









Is there continuity?

YES -

Replace the active damper control unit Service and Repair.

NO -

Repair an open in the wire between the appropriate vertical acceleration sensor and the active damper control unit.