DTC P1730: Problem in Shift Control System

WARNING: This page is about a different variant/trim than selected.

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 (see GENERAL TROUBLESHOOTING INFORMATION )

Warm up the engine to normal operating temperature (the radiator fan comes on)
Make sure that the transmission is filled to the proper level, and check for fluid leaks
Drain the ATF (see step 4 on ATF REPLACEMENT ) 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 14

NO -Replace the ATF (see ATF REPLACEMENT ), then Go to step 4
Turn the ignition switch to ON (II)
Clear the DTC with the HDS
Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears
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
Clear the DTC with the HDS
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 (see SHIFT SOLENOID VALVE AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT ), then Go to step 14
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 (see SHIFT SOLENOID VALVE AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT ), then Go to step 14
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 (see SHIFT SOLENOID VALVE AND SHIFT SOLENOID WIRE HARNESS REPLACEMENT ), then Go to step 14
Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears
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 14

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
Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears
Check for Temporary DTCs or DTCs with the HDS
Is DTC P1730 indicated?

YES -Go to step 8

NO -Go to step 16
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 15, 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 14