DTC Troubleshooting

DTC P0780: Shift Control System

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review 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 latest software, or substitute a known-good 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.

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