DTC Troubleshooting: U3000-51
DTC U3000-51: ECU Software Update Failure
NOTE:
Before you troubleshoot, review the general troubleshooting information.
Do not turn the vehicle to the OFF (LOCK) mode while updating the EPS control unit. If you turn the vehicle to the OFF (LOCK) mode before completion, the EPS control unit will be damaged.

DTC Description
DTC
Freeze Frame
U3000-51 ECU Software Update Failure
    

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode, then start the engine.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
U3000-51 ECU Software Update Failure
    

Is DTC U3000-51 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?
2.
EPS control unit check (update):

EPS control unit check (update)
?1.
Update the EPS control unit.

?2.
Turn the vehicle to the OFF (LOCK) mode, then start the engine.

?3.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
U3000-51 ECU Software Update Failure
    

Is DTC U3000-51 indicated?

     
YES
     
     
     
Check for loose terminals and poor connections at the EPS control unit connectors. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good EPS motor/control unit, then recheck. If the symptom/indication goes away with a known-good EPS motor/control unit, replace the original EPS motor/control unit.?
     
NO
     
     
     
Troubleshooting is complete.?