1-8

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

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 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. Do the appropriate vertical acceleration sensor inspection Testing and Inspection.





Does the vertical acceleration sensor indicate OK?

YES -

Replace the active damper control unit Service and Repair.�

NO -

Go to step 7.

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

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

9. Disconnect the appropriate vertical acceleration sensor 3P connector.






10. Check for continuity between body ground and the appropriate active damper control unit connector B (14P) terminal (see table).









Is there continuity?

YES -

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

NO -

Go to step 11.

11. 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 12.

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









Is there continuity?

YES -

Go to step 13.

NO -

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

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









Is there continuity?

YES -

Go to step 14.

NO -

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

14. Reconnect active damper control unit connector B (14P).

15. Start the engine, and wait 5 seconds.

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









Is there about 5 V?

YES -

Replace the appropriate vertical acceleration sensor Service and Repair.�

NO -

Replace the active damper control unit Service and Repair.�