DTC Troubleshooting

DTC Troubleshooting: P1745

DTC P1745:

Problem in Shift Control System; Servo Control Valve Stuck OFF or Servo Valve Stuck OFF

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.

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 9.

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. Then slow down, and stop the wheels.

7. Monitor the OBD STATUS for P1745 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?

YES -

Repair the servo control valve in the main valve body Main Valve Body Disassembly, Inspection, and Reassembly, the servo valve in the regulator valve body Regulator Valve Body Disassembly, Inspection, and Reassembly, or replace the main valve body, the regulator valve body, or replace the transmission, then go to step 9.

NO -

If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, go to step 4.

8. Clear the DTC with the HDS.

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

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

Is DTC P1745 indicated?

YES -

Go to step 5.

NO -

Go to step 11.

11. Monitor the OBD STATUS for P1745 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

Troubleshooting is complete.�

NO -

If the HDS indicates FAILED, go to step 8. If the HDS indicates NOT COMPLETED, go to step 9.