DTC U0322-51: Software Incompatibility with Body Control Module Not Programmed; DTC U0322-57: Software Incompatibility with Body Control Module Invalid/Incompatible Software Component [07/2020 - ]: Procedure

1. Check the main body ECU (multiplex network body ECU) part number.
   1. Check if the part number of the main body ECU (multiplex network body ECU) installed to the vehicle is correct.

      OK

      The part number is correct.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

Result: 

OK 

See step  2

1. Turn the ignition switch off.
2. Turn the ignition switch to ON.
3. Recheck for DTCs and check if the same DTC is output again.

   Body Electrical > Blind Spot Monitor "B" > Trouble Codes 

   Result

   Result	Proceed to
   No DTCs are output.	A
   DTC U0322-51 or U0322-57 is output (Blind Spot Monitor "B").	B

Result: 

B 

REPLACE BLIND SPOT MONITOR SENSOR LH (B). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

Result: 

A 

See step  3

1. Turn the ignition switch off.
2. Turn the ignition switch to ON.
3. Recheck for DTCs and check if the same DTC is output again.

   Body Electrical > Blind Spot Monitor "A" > Trouble Codes 

   Result

   Result	Proceed to
   No DTCs are output.	A
   DTC U0322-51 or U0322-57 is output (Blind Spot Monitor "A").	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

Result: 

B 

REPLACE BLIND SPOT MONITOR SENSOR RH (A). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ]