DTC U0322-51: Software Incompatibility with Body Control Module Not Programmed; DTC U0322-57: Software Incompatibility with Body Control Module Invalid/Incompatible Software Component [10/2023 - ]: 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 [10/2023 - ] 

Result: 

OK 

See step  2

1. Recheck for DTCs and check if the same DTC is output again.

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

   Result

   Result	Proceed to
   DTCs are not output	A
   U0322-51 or U0322-57 is output	B

Result: 

B 

REPLACE BLIND SPOT MONITOR SENSOR (B). Refer to  REMOVAL [10/2023 - ] 

Result: 

A 

See step  3

1. Recheck for DTCs and check if the same DTC is output again.

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

   Result

   Result	Proceed to
   DTCs are not output	A
   U0322-51 or U0322-57 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

B 

REPLACE BLIND SPOT MONITOR SENSOR (A). Refer to  REMOVAL [10/2023 - ]