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DTC 1301: GPS Antenna Error

WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Check the vehicle battery condition first.
  • Check any official Honda service website for more service information about the navigation system.
  • Before you troubleshoot, make sure to follow GENERAL TROUBLESHOOTING INFORMATION  .
  • Make sure the vehicle is parked outside, away from buildings.
  • Aftermarket electronic devices located near the navigation unit or GPS antenna can potentially interfere with the operation of the navigation system.
  1. Clear the hard error code (see HOW TO CLEAR ERROR HISTORY  ).
  2. Turn the ignition switch to LOCK (0), and back to ON (II).
  3. Check for the hard error code (see HOW TO CHECK ERROR HISTORY  ).

    Is DTC 1301 indicated? 

    YES  - Go to step  4.

    NO  - Intermittent failure, the system is OK at this time. ■

  4. Turn the ignition switch to LOCK (0).
  5. Check for poor connections or loose terminals at navigation unit connector E (2P).

    Is the connection OK? 

    YES  - Go to step 6.

    NO  - Repair poor connections or loose terminals and recheck.

  6. Disconnect navigation unit connector E (2P) and the GPS Antenna connector.
  7. Check for continuity between navigation unit connector E (2P) terminal No. 1 and body ground.
    Fig 1: Navigation Unit Connector E (2P) Terminal No. 1
    G00482251Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - There is a short to body ground in the wires between the navigation unit and the GPS antenna. Replace the affected shielded harness. Then go to step 1 and recheck.

    NO  - Go to step 8.

  8. Check for continuity between navigation unit connector E (2P) terminals No. 1 and No. 2.
    Fig 2: Navigation Unit Connector E (2P) Terminals No. 1 & No. 2
    G00482252Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - There is a short to body ground in the wires between the navigation unit and the GPS antenna. Replace the affected shielded harness. Then go to step 1 and recheck.■

    NO  - Go to step 9.

  9. Check for continuity between navigation unit connector E (2P) terminal No. 1 and the GPS antenna connector terminal No. 1.
    Fig 3: Navigation Unit Connector E (2P) Terminal No. 1 & GPS Antenna Connector Terminal No. 1
    G00482253Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Go to step 10.

    NO  - There is an open in the wires between the navigation unit and the GPA antenna. Replace the affected shielded harness. Then go to step 1 and recheck..

  10. Reconnect navigation unit connector E (2P) and the GPS antenna connector.
  11. Clear the hard error code (see HOW TO CHECK ERROR HISTORY ).
  12. Turn the ignition switch to LOCK (0), and then back to ON (II).
  13. Check for the hard error code (see HOW TO CHECK ERROR HISTORY  ).

    Is DTC 1301 indicated? 

    YES  - Replace the GPS Antenna (see GPS ANTENNA REMOVAL/INSTALLATION  ), then retest. If the DTC does not clear, replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION  ). ■

    NO  - Intermittent failure, the system is OK at this time. ■

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