DTC P1734: Problem in Shift Control System
- 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 3 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 16.
NO -Replace the ATF (see step 5 on 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 P1734 in the DTCs MENU with the HDS.
Does the HDS indicate FAILED?
YES -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 6.
- Clear the DTC with the HDS.
- Select Shift Solenoid 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 10.
NO -Replace shift solenoid valve B (see SHIFT SOLENOID VALVE REPLACEMENT ), then go to step 13.
- Select Shift Solenoid C in the Miscellaneous Test Menu, and check that shift solenoid valve C operates with the HDS.
Is a clicking sound heard?
YES -Go to step 11.
NO -Replace shift solenoid valve C (see SHIFT SOLENOID VALVE REPLACEMENT ), then go to step 13.
- Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears.
- Monitor the OBD STATUS for P1734 in the DTCs MENU with the HDS.
Does the HDS indicate FAILED?
YES -Repair the hydraulic system related with shift valves B and C, or replace the transmission, then go to step 16.
NO -If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, go to step 11.
- Reconnect all connectors.
- 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.
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1734 indicated?
YES -Go to step 8.
NO -Go to step 18.
- Monitor the OBD STATUS for P1734 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 17, 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 16.