DTC Troubleshooting

DTC Troubleshooting: P0780 (45)

DTC P0780:

Shift Control System

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information How to Troubleshoot the A/T System.
- This code is stored whenever DTCs P1730, P1731, P1732, P1733, and P1734 are detected.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears.

4. Check for other Pending or Confirmed DTCs indicated along 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.

- P1730 P1730
- P1731 P1731
- P1732 P1732
- P1733 P1733
- P1734 P1734

NO -

Go to step 5.

5. Update the PCM if it does not have the latest software ECM/PCM Update (M/T), or substitute a known-good PCM.

6. Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears.

7. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0780 indicated?

YES -

If the PCM was updated, substitute a known-good PCM, then go to step 6. If the PCM was substituted, go to step 1.

NO -

Go to step 8.

8. Monitor the OBD STATUS for P0780 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair. If any other Pending or Confirmed DTCs were indicated in step 7, go to the indicated DTC's troubleshooting.

NO -

If the PCM was updated and the HDS indicates FAILED, substitute a known-good PCM, then go to step 6. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 6.