DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Blind Spot Monitor System - Diagnostic Codes & Symptom Tests >> Blind Spot Monitor System >> DTC U0233-87: Lost Communication with Side Obstacle Detection Control Module "B" Missing Message [11/2023 - ] >> Procedure

DTC U0233-87: Lost Communication with Side Obstacle Detection Control Module "B" Missing Message [11/2023 - ]: Procedure

  1. CHECK DTC OUTPUT 
    1. Reconnect the cable to the negative (-) auxiliary battery terminal.
    2. Turn the ignition switch off.
    3. Turn the ignition switch to ON.
    4. Check for DTCs.

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

      Result

      Result Proceed to
      DTC U0233-87 is output A
      No DTCs are output B

    Result: 

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

    Result: 

    See step  2

  2. REPLACE BLIND SPOT MONITOR SENSOR LH (B) 

    HINT: 

    Refer to REMOVAL [11/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Blind Spot Monitor "A" > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK DTC OUTPUT 
    1. Check for DTCs.

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

      Result

      Result Proceed to
      DTC U0233-87 is output A
      No DTCs are output B

    Result: 

    REPLACE BLIND SPOT MONITOR SENSOR RH (A). Refer to  REMOVAL [11/2023 - ] 

    Result: 

    END (BLIND SPOT MONITOR SENSOR LH (B) WAS DEFECTIVE)