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DTC 86-14: F-CAN Communication With Gauge Control Module Malfunction

NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  • Troubleshoot any fuel and emissions DTCs first.
  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Turn the ignition switch to LOCK (0) and then back to ON (II).
  4. Check for DTCs with the HDS.

    Is DTC 86-14 indicated? 

    YES  -If DTC 86-11 is indicated at the same time, do the DTC 86-11 troubleshooting first (see DTC 86-11: F-CAN BUS-OFF MALFUNCTION  ). If DTC 86-11 is not indicated, go to step 5.

    NO  -If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING . If DTCs are not indicated, intermittent failure, the system is OK at this time. Refer to INTERMITTENT FAILURES TROUBLESHOOTING 

  5. Turn the ignition switch to LOCK (0) and then back to ON (II).

    Do the gauge indicators come on? 

    YES  -Go to step 6.

    NO  -Do the gauge control module self-diagnostic function SELF-DIAGNOSTIC FUNCTION

  6. Turn the ignition switch to LOCK (0).
  7. Disconnect the gauge control module 32P connector GAUGE CONTROL MODULE REPLACEMENT
  8. Disconnect the VSA modulator-control unit 36P connector (see step  3 ).
  9. Check for continuity between the VSA modulator-control unit 36P connector terminal and gauge control module 32P connector terminal (see table).
    Sign VSA Modulator-Control Unit 36P Connector Terminal Gauge Control Module 32P Connector Terminal
    F-CAN L No. 1 No. 29
    F-CAN H No. 14 No. 30
    Fig 1: Checking Continuity Between VSA Modulator-Control Unit 36P Connector Terminal And Gauge Control Module 32P Connector Terminal
    G08083019Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 10.

    NO  -Repair an open in the wire between the gauge control module and the VSA modulator-control unit.

  10. Substitute a known-good gauge control module GAUGE CONTROL MODULE REPLACEMENT
  11. Reconnect all connectors.
  12. Turn the ignition switch to ON (II).
  13. Clear the DTC with the HDS.
  14. Turn the ignition switch to LOCK (0) and then back to ON (II).
  15. Check for DTCs with the HDS.

    Is DTC 86-14 indicated? 

    YES  -Go to step 16.

    NO  -Replace the original gauge control module GAUGE CONTROL MODULE REPLACEMENT

  16. Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE  ).
  17. Turn the ignition switch to LOCK (0) and then back to ON (II).
  18. Check for DTCs with the HDS.

    Is DTC 86-14 indicated? 

    YES  -Check for loose terminals in the VSA modulator-control unit 36P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION  ).

    NO  -If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING .

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