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Home >> Toyota >> 2023 >> RAV4 XLE, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 147 (Automatic Transaxle System (UB80F) - Diagnostic Codes (3 Of 3) & Circuit Tests) >> Automatic Transaxle System >> DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [11/2018 - ] >> Procedure

DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [11/2018 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CLEAR DTC AND PERFORM ROAD TEST 
    1. Clear the DTCs.

      Powertrain > Transmission > Clear DTCs 

      HINT: 

      Write down the currently output DTCs before clearing them.

    2. Start the engine and drive the vehicle at a low speed.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK DTC OUTPUT (DTC U1103-87) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Transmission / Trouble Codes.

      Powertrain > Transmission > Trouble Codes 

    5. Read the DTCs using the Techstream.

      Result

      Result Proceed to
      DTC U1103-87 is not output A
      DTC U1103-87 is output B

    Result: 

    CHECK FOR INTERMITTENT PROBLEMS 

    Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2018 - ]

    Result: 

    GO TO CAN COMMUNICATION SYSTEM 

    Refer to DIAGNOSIS SYSTEM [11/2018 - 02/2019] , or refer to DIAGNOSIS SYSTEM [02/2019 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 08/2020] , or refer to DIAGNOSIS SYSTEM [08/2020 - 12/2021] , or refer to DIAGNOSIS SYSTEM [12/2021 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 10/2023] , or refer to DIAGNOSIS SYSTEM [10/2023 - 11/2024] , or refer to DIAGNOSIS SYSTEM [11/2024 - ]