DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed [01/2019 - 09/2022]: Procedure

1. Using the Techstream, check for SFI system DTCs.
   1. for M20A-FKS:

      Powertrain > Engine > Trouble Codes 

   2. for 2ZR-FAE:

      Powertrain > Engine and ECT > Trouble Codes 

   Result

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

Result: 

B 

GO TO SFI SYSTEM 

for M20A-FKS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

for 2ZR-FAE: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 11/2022]

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 DTCs.
6. Turn the ignition switch off.

   OK

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

   Result

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

Result: 

A 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  COMPONENTS [06/2018 - 09/2022] 

Result: 

B 

REPLACE ECM 

for M20A-FKS: Refer to COMPONENTS [06/2018 - 09/2022]

for 2ZR-FAE: Refer to COMPONENTS [01/2019 - 11/2022]