DTC Troubleshooting

DTC P1744: Problem in Shift Control System; Shift Valve E Stuck ON

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review 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 4.

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

4. Turn the ignition switch ON (II).
5. Clear the DTC with the HDS.
6. Test-drive the vehicle for several minutes in the D position through all five gears. Slow down and stop the wheels.
7. Retest-drive the vehicle for several minutes in the D position through all five gears. Slow down and stop the wheels.
8. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1744 indicated?

YES - Go to step 1.

NO - Go to step 9.

9. Monitor the OBD STATUS for P1744 in the DTCs MENU with the HDS.

Does the screen indicate FAILED?

YES - Repair shift valve E in the main valve body, replace the main valve body, or replace the transmission.

NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, return to step 4 and recheck.