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 VSA modulator-control unit. If you turn the vehicle to the OFF (LOCK) mode before completion, the VSA modulator-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 to the ON mode.

?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.
VSA modulator-control unit check (update):

VSA modulator-control unit check (update)
?1.
Update the VSA modulator-control unit.

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

?3.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC U3000-51 indicated?

     
YES
     
     
     
The failure is duplicated. Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit.?
     
NO
     
     
     
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?