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DTC 1306: Vehicle Speed Pulse

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • This navigation DTC sets when there is a problem with the VSP circiut.
  • Check the vehicle battery condition first (see BATTERY TEST )
  • Before you troubleshoot, make sure to follow the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION )
  1. Check the MIL on the gauge.

    Is the MIL on? 

    YES  -Go to the PGM-FI system's general troubleshooting information (see)

    NO  -Go to step 2.

  2. Check the most recent DTC (see HOW TO CHECK ERROR HISTORY )
  3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then start the engine.
  4. Check the most recent DTC (see HOW TO CHECK ERROR HISTORY )

    Is DTC 1306 indicated at the time you cycled the vehicle? 

    YES  -Go to step 5

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

  5. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode. (see Start-Up Procedure And Diagnostic Menu ).
  6. Select the Car Status in the System Links (see CAR STATUS ) to check the vehicle speed pulse
  7. With the help of an assistant drive the vehicle and watch the VSP signal.

    Does the VSP signal change from [0] (stopped) to [1] (driving) as you drive? 

    YES  -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION )

    NO  -Go to step 8

  8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  9. Disconnect audio-navigation unit connector A (24P).
  10. Jump the SCS line with the HDS.
  11. Disconnect ECM/PCM connector A (49P).
  12. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and body ground.
    Fig 1: Checking For Continuity Between Audio-Navigation Unit Connector A (24P) Terminal No. 15 And Body Ground
    G00504545Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity?

    YES  -Repair a short to body ground in the wire between the audio-navigation unit and the ECM/PCM, and recheck

    NO  -Go to step 13

  13. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and ECM/PCM connector A (49P) terminal No. 30.
    Fig 2: Checking For Continuity Between Audio-Navigation Unit Connector A (24P) Terminal No. 15 And ECM/PCM Connector A (49P) Terminal No. 30
    G00504546Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity?

    YES  -Update the ECM/PCM (see ECM/PCM UPDATE ), or substitute a known-good the ECM/PCM (see SUBSTITUTING THE ECM/PCM ), and recheck. If the symptom/indication goes away, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ).

    NO  -Repair an open in the wire between the audio-navigation unit and the ECM/PCM, and recheck.

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