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Home >> Nissan-Datsun >> 2012 >> Cube Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 122 (Active Damper System) >> DTC Troubleshooting >> DTC 8-6: F-CAN Malfunction (Active Damper Control Unit Lost Communication With VSA Modulator-Control Unit)

DTC 8-6: F-CAN Malfunction (Active Damper Control Unit Lost Communication With VSA Modulator-Control Unit)

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
  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 8-6 indicated? 

    YES  -Go to step 6.

    NO  -Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting (see INTERMITTENT FAILURES  ).

  6. Check for VSA system DTCs with the HDS (see GENERAL TROUBLESHOOTING INFORMATION ).

    Are any DTC indicated? 

    YES  -Go to the indicated VSA system DTC's troubleshooting, then go to step  14.

    NO  -Go to step 7.

  7. Turn the ignition switch to LOCK (0).
  8. Wait 30 seconds or more.
  9. Disconnect the VSA modulator-control unit 46P connector (see step 3 under VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).
  10. Disconnect active damper control unit connector B (14P) connector (see ACTIVE DAMPER CONTROL UNIT REPLACEMENT  ).
  11. Check for continuity between the active damper control unit connector B (14P) terminals and the VSA modulator-control unit 46P connector terminals individually (see table).
    Sign Active Damper Control Unit Connector B Terminal VSA Modulator-Control Unit Connector Terminal
    F-CAN A L No. 8 No. 38
    F-CAN A H No. 1 No. 39
    Fig 1: Checking Continuity Between Active Damper Control Unit Connector B (14P) Terminals And VSA Modulator-Control Unit 46P Connector Terminals
    G08052940Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 12

    NO  -Repair an open in the wire between the VSA modulator-control unit and the active damper control unit.

  12. Substitute a known-good active damper control unit (see ACTIVE DAMPER CONTROL UNIT REPLACEMENT  ).
  13. Reconnect all connectors.
  14. Turn the ignition switch to ON (II).
  15. Clear the DTC with the HDS.
  16. Turn the ignition switch to LOCK (0).
  17. Start the engine, and wait 5 seconds.
  18. Check for DTCs with the HDS.

    Is DTC 8-6 indicated? 

    YES  -Replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

    NO  -Replace the original active damper control unit (18-116).

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