DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed [07/2022 - ]: 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 [10/2018 - ] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: System Select / Health Check.
5. Check for DTCs.
6. 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  COMPONENTS [10/2018 - ] 

Result: 

OK 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Chassis / Front Recognition Camera / Data List.
5. Read the Data List according to the display on the Techstream.

   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 / HV/EV	Non-HV/EV: Gasoline Model HV/EV: HV Model	If the value of this item differs from the specifications of the vehicle, a forward recognition camera which was installed to another vehicle may be installed or the forward recognition camera may be malfunctioning.

   Chassis > Front Recognition Camera > Data List 

   Tester Display
   HV/EV 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  COMPONENTS [10/2018 - ] 

Result: 

B 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  COMPONENTS [10/2018 - ]