DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed; DTC U0300-57: Internal Control Module Software Incompatibility Invalid/Incompatible Software Component [07/2020 - ]: Procedure

1. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   Hybrid control system DTC is not output	A
   Hybrid control system DTC is output	B

Result: 

B 

GO TO HYBRID CONTROL SYSTEM 

for NICKEL METAL HYDRIDE BATTERY: Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 06/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2021 - ]

for LITHIUM-ION BATTERY: Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 06/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2021 - ]

Result: 

A 

See step  2

1. Using the Techstream, perform a health check.

   OK

   ECUs other than the forward recognition camera do not output specification information mismatch DTCs related to the hybrid vehicle control ECU.

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [07/2020 - ] 

Result: 

A 

See step  3

1. Using the Techstream, read the Data List.

   Chassis > Front Recognition Camera > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   HV/EV Equipped Information	Vehicle information (engine) stored by forward recognition camera	Non-HV/EV or HV/EV	Non-HV/EV: Gasoline Model HV/EV: HV Model	If a display different from vehicle specification is output, a forward recognition camera that was used with a different vehicle was installed, or the forward recognition camera may be malfunctioning.

   Chassis > Front Recognition Camera > Data List 

   Tester Display
   HV/EV Equipped Information

   HINT: 

   • When the specification stored by the forward recognition camera and the vehicle specification do not match, there is a malfunction in the specification information stored by the forward recognition camera. Therefore, replace the forward recognition camera.
   • When the specification stored by the forward recognition camera and the vehicle specification match, a hybrid vehicle control ECU with different specifications may be installed. Therefore, replace the hybrid vehicle control ECU.

   Result

   Result	Proceed to
   Specification stored by the forward recognition camera and vehicle specification do not match	A
   Specification stored by the forward recognition camera and vehicle specification match	B

Result: 

A 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [07/2020 - ] 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [07/2020 - ]