DTC U0300-57: Internal Control Module Software Incompatibility Invalid / Incompatible Software Component [08/2019 - ]: Procedure

1. Check for DTCs of hybrid control system.

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO HYBRID CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG)
3. Turn the Techstream on.
4. Enter the following menus: System Select / Health Check.
5. Check for DTCs.
6. Turn the power switch off.

   OK

   DTCs indicating a vehicle information mismatch with that of the hybrid vehicle control ECU assembly are not output by any ECU other than the forward recognition camera.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

Result: 

OK 

See step  3

Result: 

A 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [08/2019 - ] 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [08/2019 - ]