DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed [11/2023 - ]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for HV Model	A
   for Gasoline Model	B

Result: 

B 

See step  5

Result: 

A 

See step  2

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 [11/2023 - ] 

Result: 

A 

See step  3

1. Check for DTCs.
2. Turn the ignition switch off.

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2023 - ] 

Result: 

OK 

See step  4

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

   Chassis > Front Recognition Camera > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   HV Equipped Information	Vehicle information (conventional/hybrid) stored in forward recognition camera	Non-HV / HV	Non-HV: Conventional vehicle HV: Hybrid vehicle	-

   Chassis > Front Recognition Camera > Data List 

   Tester Display
   HV Equipped Information

   HINT: 

   • If the vehicle information stored in the forward recognition camera is different from the actual vehicle specifications, the vehicle information stored in the forward recognition camera may be incorrect. Replace the forward recognition camera.
   • If the vehicle information stored in the forward recognition camera matches the actual vehicle specifications, the installed hybrid vehicle control ECU is incompatible. Replace the hybrid vehicle control ECU.

   Result

   Result	Proceed to
   Vehicle information stored in forward recognition camera and actual vehicle specifications do not match	A
   Vehicle information stored in forward recognition camera and actual vehicle specifications match	B

Result: 

A 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [11/2023 - ] 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2023 - ] 

1. Check for DTCs of SFI system.

   Powertrain > Engine > Trouble Codes 

   Result

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

Result: 

B 

GO TO SFI SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] 

Result: 

A 

See step  6

1. Check for DTCs.
2. Turn the ignition switch off.

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ECM. Refer to  REMOVAL [11/2023 - ] 

Result: 

OK 

See step  7

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

   Chassis > Front Recognition Camera > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   HV Equipped Information	Vehicle information (conventional/hybrid) stored in forward recognition camera	Non-HV / HV	Non-HV: Conventional vehicle HV: Hybrid vehicle	-

   Chassis > Front Recognition Camera > Data List 

   Tester Display
   HV Equipped Information

   HINT: 

   • If the vehicle information stored in the forward recognition camera is different from the actual vehicle specifications, the vehicle information stored in the forward recognition camera may be incorrect. Replace the forward recognition camera.
   • If the vehicle information stored in the forward recognition camera matches the actual vehicle specifications, the installed ECM is incompatible. Replace the ECM.

   Result

   Result	Proceed to
   Vehicle information stored in forward recognition camera and actual vehicle specifications do not match	A
   Vehicle information stored in forward recognition camera and actual vehicle specifications match	B

Result: 

A 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [11/2023 - ] 

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [11/2023 - ]