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

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTCs

Using the Techstream, 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

Result:

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:

See step 2

CHECK FOR DTCs (HEALTH CHECK)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: System Select / Health Check.
Check DTCs.

Turn the ignition switch off.

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:

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

Result:

REPLACE ECM

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

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