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DTC P0780: Shift Control System

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  1. Turn the ignition switch ON (II).
  2. Clear the DTC with the HDS.
  3. Test-drive the vehicle for several minutes in the D position through all five gears, then slow down to a stop.
  4. Repeat the test-drive in step  3.
  5. Check for other DTCs indicated simultaneously with DTC P0780.
    NOTE: DTC P0780 means there is one or more A/T DTCs regarding the shift control system.

    Are there other DTCs? 

    YES  -Go to the INDICATED DTC'S TROUBLESHOOTING .

    NO  -Go to step 6.

  6. Update the PCM if it does not have the latest software (see UPDATING THE PCM  ), or substitute a known-good PCM (see SUBSTITUTING THE PCM  ).
  7. Test-drive the vehicle for several minutes in the D position through all five gears, then slow down to a stop.
  8. Repeat the test-drive in step  7.
  9. Monitor the OBD STATUS for P0780 in the DTCs MENU with the HDS.

    Does the screen indicate PASSED? 

    YES  -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see ECM/PCM REPLACEMENT ).

    NO  -If the PCM was updated and screen indicates FAILED, substitute a known-good PCM (see SUBSTITUTING THE PCM  ), then go to step  1. If the PCM was substituted, go to step  1.

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