DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed; DTC U0300-57: Internal Control Module Software Incompatibility Invalid / Incompatible Software Component [09/2022 - ]: Procedure

1. Using the GTS, check for hybrid system DTCs.

   HINT: 

   If DTC U0300-51 or U0300-57 is output by the pre-collision system, it is possible that SFI system DTCs have been stored, so perform troubleshooting for the SFI system.

   Powertrain > Engine > Trouble Codes 

   Result

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

Result: 

B 

GO TO HYBRID CONTROL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2022 - ] 

Result: 

A 

See step  2

1. Using the GTS, perform the Health Check.
2. Check for DTCs.

   OK

   ECUs other than the millimeter wave radar sensor assembly do not output specification information mismatch DTCs related to the ECM.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ECM. Refer to  REMOVAL [09/2022 - ] 

Result: 

OK 

See step  3

1. Using the GTS, read the Data List.

   Body Electrical > Pre-Collision System > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Vehicle Information (Conv/HV/EV)	Vehicle information (Conv/HV/EV)	Unknown / Conv / HV/EV	Unknown: Vehicle information not confirmed Conv: Conventional HV/EV: Hybrid vehicle	-

   Body Electrical > Pre-Collision System > Data List 

   Tester Display
   Vehicle Information (Conv/HV/EV)

   HINT: 

   • When the specification stored by the millimeter wave radar sensor assembly and the vehicle specification do not match, there is a malfunction in the specification information stored by the millimeter wave radar sensor assembly. Therefore, replace the millimeter wave radar sensor assembly.
   • When the specification stored by the millimeter wave radar sensor assembly and the vehicle specification match, an ECM with different specifications may be installed. Therefore, replace the ECM.

   Result

   Result	Proceed to
   Vehicle information stored in millimeter wave radar sensor assembly and actual vehicle specifications do not match	A
   "Unknown" is displayed
   Vehicle information stored in millimeter wave radar sensor assembly and actual vehicle specifications match	B

Result: 

A 

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY. Refer to  REMOVAL [09/2022 - ] 

Result: 

B 

See step  4

1. Using the GTS, read the Data List.

   Body Electrical > Pre-Collision System > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Vehicle Information (Transmission Type)	Vehicle information (transmission type)	MT / AT / CVT / MMT / SMT / HV/EV - AT / Unknown	Displays the type of transmission	-

   Body Electrical > Pre-Collision System > Data List 

   Tester Display
   Vehicle Information (Transmission Type)

   HINT: 

   • When the specification stored by the millimeter wave radar sensor assembly and the vehicle specification do not match, there is a malfunction in the specification information stored by the millimeter wave radar sensor assembly. Therefore, replace the millimeter wave radar sensor assembly.
   • When the specification stored by the millimeter wave radar sensor assembly and the vehicle specification match, an ECM with different specifications may be installed. Therefore, replace the ECM.

   Result

   Result	Proceed to
   Vehicle information stored in millimeter wave radar sensor assembly and actual vehicle specifications do not match	A
   "Unknown" is displayed
   Vehicle information stored in millimeter wave radar sensor assembly and actual vehicle specifications match	B

Result: 

A 

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY. Refer to  REMOVAL [09/2022 - ] 

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [09/2022 - ]