DTC Troubleshooting

DTC P1730: Problem in Shift Control System:
^ Shift Solenoid Valves A or D Stuck OFF
^ Shift Solenoid Valve B Stuck ON
^ Shift Valves A, B, or D Stuck

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF through a strainer. Inspect the strainer for metal debris or excessive clutch material.

Does the strainer have metal debris or excessive clutch material?

YES - Replace the transmission, then go to step 17.

NO - Replace the ATF, then go to step 4.

4. Turn the ignition switch to ON (II).
5. Clear the DTC with the HDS.
6. Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears.
7. Monitor the OBD STATUS for P1730 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?

YES - Go to step 8.

NO - If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, go to step 6.

8. Clear the DTC with the HDS.
9. Select Shift Solenoid Valve A in the Miscellaneous Test Menu, and check that shift solenoid valve A operates with the HDS.

Is a clicking sound heard?

YES - Go to step 10.

NO - Replace shift solenoid valve A, then go to step 14.

10. Select Shift Solenoid Valve B in the Miscellaneous Test Menu, and check that shift solenoid valve B operates with the HDS.

Is a clicking sound heard?

YES - Go to step 11.

NO - Replace shift solenoid valve B, then go to step 14.

11. Select Shift Solenoid Valve D in the Miscellaneous Test Menu, and check that shift solenoid valve D operates with the HDS.

Is a clicking sound heard?

YES - Go to step 12.

NO - Replace shift solenoid valve D, then go to step 14.

12. Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears.
13. Monitor the OBD STATUS for P1730 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?

YES - Repair the hydraulic system related to shift valves A, B, and D, or replace the transmission, then go to step 17.

NO - If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, go to step 12.

14. Reconnect all connectors.
15. Turn the ignition switch to ON (II).
16. Clear the DTC with the HDS.
17. Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears.
18. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1730 indicated?

YES - Go to stop 8.

NO - Go to step 19.

19. Monitor the OBD STATUS for P1730 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 18, go to the indicated DTC's troubleshooting.

NO - If the HDS indicates FAILED, go to step 8. If the HDS indicates NOT COMPLETED, go to step 17.