DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed; DTC U0300-57: Internal Control Module Software Incompatibility Invalid / Incompatible Software Component [05/2023 - ]: Procedure

1. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   HINT: 

   If the pre-collision system outputs U0300-51 or U0300-57, hybrid control system DTCs may also have been output. Check the hybrid control system first.

   Result

   Result	Proceed to
   DTC are not output	A
   DTC is output (Hybrid Control System)	B

Result: 

B 

GO TO HYBRID CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [01/2017 - ] 

Result: 

A 

See step  2

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

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [05/2023 - ] 

Result: 

OK 

See step  3

1. Read the Data List according to the display on the Techstream.

   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 or HV/EV	Unknown: Vehicle information not confirmed Conv: Conventional HV/EV: HV	-

   Body Electrical > Pre-Collision System > Data List 

   Tester Display
   Vehicle Information (Conv/HV/EV)

   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 assembly with different specifications may be installed. Therefore, replace the hybrid vehicle control ECU assembly.

   Result

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

Result: 

A 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [05/2023 - ] 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [05/2023 - ]