1-7

Active Damper System DTC Troubleshooting: 1-7, 1-8, 1-9

DTC 1-7:

Front Vertical Acceleration Sensor Circuit Low Voltage

DTC 1-8:

Right-Rear Vertical Acceleration Sensor Circuit Low Voltage

DTC 1-9:

Left-Rear Vertical Acceleration Sensor Circuit Low Voltage

NOTE: If DTC 8-2 is stored at the same time as DTC 1-7, DTC 1-8, or DTC 1-9 troubleshoot DTC 8-2 first, then recheck for DTC 1-7, DTC 1-8, or DTC 1-9.

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 1-7, 1-8, or 1-9 indicated?

YES -

Go to step 6.

NO -

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

6. Check for DTCs with the HDS.

Is only one DTC indicated?

YES -

Go to step 7.

NO -

Go to step 19.

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. Measure the voltage between body ground and appropriate vertical acceleration sensor 3P connector terminal No. 1.

Is there about 5 V?

YES -

Go to step 11.

NO -

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

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

12. Connect appropriate vertical acceleration sensor 3P connector terminals No. 1 and No. 3 with a jumper wire.

DTC 1-7

DTC 1-8

DTC 1-9

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

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

Is there about 5 V?

YES -

Replace the appropriate vertical acceleration sensor Service and Repair.�

NO -

Go to step 15.

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

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

17. Check for continuity between appropriate vertical acceleration sensor terminals No. 2 and No. 3.

DTC 1-7

DTC 1-8

DTC 1-9

Is there continuity?

YES -

Repair a short in the wires between the appropriate vertical acceleration sensor and the active damper control unit.�

NO -

Go to step 18.

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

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.�

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

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

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

22. Check for continuity between active damper control unit connector B (14P) terminal No. 4 and appropriate vertical acceleration sensor 3P connector terminal No. 1.