DTC U0233: Lost Communication with Blind Spot Monitor Master Module [12/2019 - 11/2023]: Procedure

1. Turn the ignition switch off.
2. Turn the ignition switch to ON.
3. Clear the DTCs.

   Body Electrical > Blind Spot Monitor Slave > Clear DTCs 

4. Check for DTCs.

   Body Electrical > Blind Spot Monitor Slave > Trouble Codes 

   Result

   Result	Proceed to
   DTC U0233 is output	A
   No DTCs are output	B

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

Result: 

A 

See step  2

Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

Result

Result: 

NEXT 

See step  3

1. Check for DTCs.

   Body Electrical > Blind Spot Monitor Slave > Trouble Codes 

   Result

   Result	Proceed to
   DTC U0233 is output	A
   No DTCs are output	B

Result: 

A 

REPLACE BLIND SPOT MONITOR SENSOR LH (MASTER). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

B 

END (BLIND SPOT MONITOR SENSOR RH (SLAVE) WAS DEFECTIVE)