WIRELESS DOOR LOCK CONTROL SYSTEM(w/o Entry and Start System) No Answer-Back

DESCRIPTION

In some cases, wireless door lock control functions are normal but the hazard warning light answer-back function does not operate. In such cases, hazard warning light signal outputs from the body ECU may be malfunctioning.

WIRING DIAGRAM

B0027VTE04

CAUTION / NOTICE / HINT

Note


  • If the body ECU has been replaced, it is necessary to initialize the body ECU.*1

    Click here

  • As the door control battery is installed between the vehicle battery and body ECU, first perform the inspections to confirm that there are no malfunctions in the power source circuit for the body ECU before performing this troubleshooting procedure.*2

    Click here


    • *1: w/ Automatic Light Control System

    • *2: w/ Door Control Battery

PROCEDURE


  1. CHECK HAZARD WARNING LIGHTS OPERATION


    1. Check that the hazard warning light blinks when the hazard warning signal switch is pressed.

      OK
      Hazard warning light signal is normal.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM (PROCEED TO HAZARD WARNING SWITCH CIRCUIT) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BODY ECU)


    1. Disconnect the G11 combination meter assembly connector.

    2. Disconnect the G27 body ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G11-2 (HAZ) - G27-6 (HAZ) Always Below 1 Ω
      G11-2 (HAZ) or G27-6 (HAZ) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT DOOR LOCK ASSEMBLY (DETECTION UNLOCK SWITCH)

    *: for Double Cab


    1. for Front Side:


      1. Remove the front door lock assembly.

        Click here

      2. Inspect the front door lock assembly.

        Click here

    2. for Rear Side*:


      1. Remove the rear door lock assembly.

        Click here

      2. Inspect the rear door lock assembly.

        Click here

      Result
      Result Proceed to
      OK A
      NG (for Front Side) B
      NG (for Rear Side) C

    B

    REPLACE FRONT DOOR LOCK ASSEMBLY Click here

    C

    REPLACE REAR DOOR LOCK ASSEMBLY Click here

    A

  4. CHECK HARNESS AND CONNECTOR (DOOR LOCK ASSEMBLY - BODY ECU AND BODY GROUND)


    • *1: for LHD

    • *2: for RHD

    • *3: for Double Cab


    1. for Driver Side:


      1. Disconnect the K1*1 or J1*2 front door lock assembly LH*1 or RH*2 connector.

      2. Disconnect the G27 body ECU connector.

      3. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        for LHD
        Tester Connection Condition Specified Condition
        K1-8 (LSSR) - G27-15 (LSWD) Always Below 1 Ω
        K1-7 (E) - Body ground Always Below 1 Ω
        K1-8 (LSSR) or G27-15 (LSWD) - Body ground Always 10 kΩ or higher
        for RHD
        Tester Connection Condition Specified Condition
        J1-7 (LSSR) - G27-15 (LSWD) Always Below 1 Ω
        J1-8 (E) - Body ground Always Below 1 Ω
        J1-7 (LSSR) or G27-15 (LSWD) - Body ground Always 10 kΩ or higher

    2. except Driver Side:


      1. Disconnect the J1*1 or K1*2 front door lock assembly RH*1 or LH*2 connector.

      2. Disconnect the L1 rear door lock assembly RH connector*3.

      3. Disconnect the M1 rear door lock assembly LH connector*3.

      4. Disconnect the G27 body ECU connector.

      5. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        for LHD
        Tester Connection Condition Specified Condition
        J1-7 (LSSR) - G27-2 (LSWP) Always Below 1 Ω
        J1-8 (E) - Body ground Always Below 1 Ω
        J1-7 (LSSR) or G27-2 (LSWP) - Body ground Always 10 kΩ or higher
        L1-6 (LSSR) - G27-2 (LSWP)*3 Always Below 1 Ω
        L1-9 (E) - Body ground*3 Always Below 1 Ω
        L1-6 (LSSR) or G27-2 (LSWP) - Body ground*3 Always 10 kΩ or higher
        M1-6 (LSSR) - G27-2 (LSWP)*3 Always Below 1 Ω
        M1-9 (E) - Body ground*3 Always Below 1 Ω
        M1-6 (LSSR) or G27-2 (LSWP) - Body ground*3 Always 10 kΩ or higher
        for RHD
        Tester Connection Condition Specified Condition
        K1-8 (LSSR) - G27-2 (LSWP) Always Below 1 Ω
        K1-7 (E) - Body ground Always Below 1 Ω
        K1-8 (LSSR) or G27-2 (LSWP) - Body ground Always 10 kΩ or higher
        L1-6 (LSSR) - G27-2 (LSWP)*3 Always Below 1 Ω
        L1-9 (E) - Body ground*3 Always Below 1 Ω
        L1-6 (LSSR) or G27-2 (LSWP) - Body ground*3 Always 10 kΩ or higher
        M1-6 (LSSR) - G27-2 (LSWP)*3 Always Below 1 Ω
        M1-9 (E) - Body ground*3 Always Below 1 Ω
        M1-6 (LSSR) or G27-2 (LSWP) - Body ground*3 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BODY ECU for LHD: Click here
    REPLACE BODY ECU for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR