LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2019 >> RAV4 LE, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (A25A-FKS) (W/ Canister Pump Module) - Diagnostic Codes (7 Of 7) & Circuit Tests (1 Of 2) >> SFI SYSTEM (w/ Canister Pump Module) >> DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [11/2018 - 08/2020] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [11/2018 - 08/2020]: Procedure

  1. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    5. Turn the ignition switch off and wait for at least 30 seconds.

      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 / Engine / Trouble Codes.

      Powertrain > Engine > 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  CHECK FOR INTERMITTENT PROBLEMS [11/2018 - 08/2020] 

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]