DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed [09/2022 - 11/2022]: Procedure
WARNING: This page is about a different car, the 2023 Toyota GR Corolla and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR DTCs
- Using the GTS, check for SFI system DTCs.
- for M20A-FKS:
Powertrain > Engine > Trouble Codes
- 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 - for M20A-FKS:
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
- Using the GTS, check for SFI system DTCs.
- CHECK FOR DTCs (HEALTH CHECK)
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON.
- Turn the GTS on.
- Enter the following menus: System Select / Health Check.
- Check DTCs.
- 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 REMOVAL [09/2022 - 11/2022]
Result:
B
REPLACE ECM
for M20A-FKS: Refer to REMOVAL [09/2022 - 11/2022]
for 2ZR-FAE: Refer to REMOVAL [09/2022 - 11/2022]