DTC Troubleshooting

DTC Troubleshooting: P1780 (49)

DTC P1780:

Shift Control System (Transmission Default Mode)

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- This code is caused by a hydraulic control system problem (DTCs P1746 and P1747), and stored simultaneously with DTC P1746 and/or P1747.

1. Clear the DTC with the HDS.

2. Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears. Then slow down to a stop.

3. Check whether the DTC P1746 or P1747 is indicated in the DTCs/Freeze Data in A/T Mode Menu with the HDS.

Is DTC P1746 or P1747 indicated?

YES -

- Troubleshoot DTC P1746 P1746.�
- Troubleshoot DTC P1747 P1746.�

NO -

Intermittent failure, the system is OK at this time.�