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DTC P0976: Shift Solenoid Valve B (Short)

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).
  • This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
  • Some wire colors vary according to the model year, and are indicated with an asterisk as follows:
    • *(1): '09 - 10 models
    • *(2): '11 - 12 models
  1. Clear the DTC with the HDS.
  2. Start the engine, and test-drive the vehicle:
    • Seven-position transmission: Drive the vehicle in 1st gear in D, D3, or 1 for at least 1 second, then slow down to a stop.
    • Five-position transmission; Drive the vehicle in D or in 1st gear in the sequential sportshift mode in S for at least 1 second. Then slow down to a stop.
  3. Check that DTC P0976 recurs.

    Is DTC P0976 indicated? 

    YES  - go to step  7.

    NO  -Go to step 4.

  4. Select Shift Solenoid B in the Miscellaneous Test Menu, and test shift solenoid valve B with the HDS.

    Is a clicking sound heard? 

    YES  -Go to step 5.

    NO  - go to step  7.

  5. Start the engine, and test-drive the vehicle:
    • Seven-position transmission: Drive the vehicle in 1st gear in D3 for at least 1 second, then press the accelerator pedal so that the transmission upshifts into 3rd gear, and drive in 3rd gear for at least 1 second. Slow down and stop the wheels.
    • Five-position transmission: Drive the vehicle in 1st gear in the sequential sportshift mode in S for at least 1 second, then upshift to 3rd gear by pulling the paddle shifter + (upshift switch), and drive in 3rd gear for at least 1 second. Slow down and stop the wheels.
  6. Monitor the OBD status for P0976 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

    Does the HDS indicate FAILED? 

    YES  -Go to step 7.

    NO  -Intermittent failure, the system is OK at this time. Check the SHB wire for an intermittent short to ground between shift solenoid valve B and the PCM. If the HDS indicates NOT COMPLETED, return to step  4 and recheck.

  7. Turn the ignition switch to LOCK (0).
  8. Jump the SCS line with the HDS.
  9. Disconnect PCM connector B (49P).
  10. Measure the resistance between PCM connector terminal B27 and body ground.
    Fig 1: Measuring Resistance Between PCM Connector Terminal B27 And Body Ground
    G06768384Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 12 Ω? 

    YES  -Go to step 11.

    NO  - go to step  17.

  11. Disconnect the shift solenoid harness connector.
  12. Check for continuity between PCM connector terminal B27 and body ground.
    Fig 2: Checking Continuity Between PCM Connector Terminal B27 And Body Ground
    G06768385Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short in the wire between PCM connector terminal B27 and the shift solenoid harness connector, then go to step  22.

    NO  -Go to step 13.

  13. Inspect shift solenoid valve B (see SHIFT SOLENOID VALVE TEST ).

    Is shift solenoid valve B OK? 

    YES  -Go to step 14.

    NO  -Replace shift solenoid valve B or the shift solenoid harness (see SHIFT SOLENOID VALVE AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT ), then go to step  22.

  14. Disconnect PCM connector A (49P).
  15. Turn the ignition switch to ON (II).
  16. Measure the voltage between PCM connector terminal A1 and body ground.
    Fig 3: Measuring Voltage Between PCM Connector Terminal A1 And Body Ground
    G06768386Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Go to step 17.

    NO  -Check for a blown No. 7 (10 A) fuse in the under-hood fuse/relay box. If the fuse is OK, repair an open in the wire between PCM connector terminal A1 and the under-hood fuse/relay box, then go to step  22.

  17. Reconnect all connectors.
  18. Update the A/T software in the PCM if it does not have the latest software (see ECM/PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE ECM/PCM ).
  19. Test-drive the vehicle:
    • Seven-position transmission: Drive the vehicle in 1st gear in D3 for at least 1 second, then press the accelerator pedal so that the transmission upshifts into 3rd gear, and drive in 3rd gear for at least 1 second. Slow down and stop the wheels.
    • Five-position transmission: Drive the vehicle in 1st gear in the sequential sportshift mode in S for at least 1 second, then upshift to 3rd gear by pulling the paddle shifter + (upshift switch), and drive in 3rd gear for at least 1 second. Slow down and stop the wheels.
  20. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC P0976 indicated? 

    YES  -If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE ECM/PCM ), then recheck. If the PCM was substituted, go to step  1.

    NO  -Go to step 21.

  21. Monitor the OBD status for P0976 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

    Does the HDS indicate PASSED? 

    YES  -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see ECM/PCM REPLACEMENT ). If any other DTCs were indicated on step 20, go to the indicated DTC's troubleshooting.

    NO  -Check for an intermittent short in the wire between shift solenoid valve B and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE ECM/PCM ), then recheck. If the PCM was substituted, go to step  1. If the HDS indicates NOT COMPLETED, return to step  19 and recheck.

  22. Reconnect all connectors.
  23. Clear the DTC with the HDS.
  24. Test-drive the vehicle:
    • Seven-position transmission: Drive the vehicle in 1st gear in D3 for at least 1 second, then press the accelerator pedal so that the transmission upshifts into 3rd gear, and drive in 3rd gear for at least 1 second. Slow down and stop the wheels.
    • Five-position transmission: Drive the vehicle in 1st gear in the sequential sportshift mode in S for at least 1 second, then upshift to 3rd gear by pulling the paddle shifter + (upshift switch), and drive in 3rd gear for at least 1 second. Slow down and stop the wheels.
  25. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC P0976 indicated? 

    YES  -Check for an intermittent short in the wire between shift solenoid valve B and the PCM, then go to step  1.

    NO  -Go to step 26.

  26. Monitor the OBD status for P0976 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

    Does the HDS indicate PASSED? 

    YES  -Troubleshooting is complete. If any other DTCs were indicated on step 25, go to the indicated DTC's troubleshooting.

    NO  -Check for an intermittent short in the wire between shift solenoid valve B and the PCM, then go to step  1. If the HDS indicates NOT COMPLETED, return to step  24 and recheck.

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