( TF09E1PK77100090766FAAT00 )
DTC Troubleshooting: P0766 (73)
DTC P0766:
 Shift Solenoid Valve D Stuck OFF
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information.
  1. Warm up the engine to normal operating temperature (the radiator fan comes on).
  1. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
  1. 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 11 .
NO -
  1. Clear the DTC with the HDS.
  1. Start the engine, shift to N, then into R. Move the vehicle in reverse for at least 2 seconds, and stop the wheels. Shift to D, and test-drive the vehicle for at least 2 seconds, and let the transmission shift through all five gears, then slow down to a stop.
  1. Monitor the OBD status for P0766 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate FAILED?
YES -
Go to Step 7 .
NO -
Intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, return to Step 5 and recheck.■
  1. Clear the DTC with the HDS.
  1. Select Shift Solenoid 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 9 .
NO -
  1. Start the engine, shift to N, then into R. Move the vehicle in reverse for at least 2 seconds, and stop the wheels. Shift to D, and test-drive the vehicle for at least 2 seconds, and let the transmission shift through all five gears, then slow down to a stop.
  1. Monitor the OBD status for P0766 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate FAILED?
YES -
Repair the hydraulic system related with shift valve D, or replace the transmission, then go to Step 11 .
NO -
Intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, return to Step 9 and recheck.■
  1. Clear the DTC with the HDS.
  1. Start the engine, shift to N, then into R. Move the vehicle in reverse for at least 2 seconds, and stop the wheels. Shift to D, and test-drive the vehicle for at least 2 seconds, and let the transmission shift through all five gears, then slow down to a stop.
  1. Monitor the OBD status for P0766 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?
YES -
Troubleshooting is complete.■
NO -
Return to Step 11 and recheck. If the HDS indicates NOT COMPLETED, return to Step 12 and recheck.