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Home >> Toyota >> 2021 >> Sequoia TRD Pro >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System - Diagnostic Codes (3 Of 3) & Symptom Tests >> Vehicle Stability Control System >> DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0114: Lost Communication with 4WD Control ECU; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module [08/2019 - ] >> Procedure
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DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0114: Lost Communication with 4WD Control ECU; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module [08/2019 - ]: Procedure

  1. CHECK DTC OUTPUT (HEALTH CHECK) 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2019 - ]

    2. Turn the engine switch off.
    3. Turn the engine switch on (IG).
    4. Enter the following menus: System Select / Health Check.
    5. Check for DTCs.

      Result

      Result Proceed to
      DTCs for related systems are output together with DTC U0073, U0100, U0114, U0123 or U0126. A
      U0073, U0100, U0114, U0123 or U0126 is output B
      DTCs are not output C

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ] 

    Result: 

    INSPECT CAN COMMUNICATION SYSTEM. 

    Refer to

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]

    Result: 

    USE SIMULATION METHOD TO CHECK. 

    Refer to

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]