ACTIVE TORQUE CONTROL 4WD SYSTEM TEST MODE PROCEDURE


  1. DESCRIPTION

    Tech Tips

    When using a chassis dynamometer, brake tester, etc. to perform a vehicle test, activate test mode to avoid a "different tire diameter installed" incorrect judgment.

    Test mode does not have a 4WD parameter. Test mode is activated because it will prohibit a different tire diameter judgment.

    Control Status 4WD Control Status
    During test mode

    • Different tire diameter malfunction judgment (detection that tire diameter of 4 wheels are not same) is not performed.


    • Other than above item, normal control is performed.

    - 4 wheel drive control switch OFF (AWD auto mode status)

    - 4 wheel drive control switch ON (AWD lock mode status)

  2. ACTIVATE TEST MODE

    Tech Tips

    Activate test mode before using a chassis dynamometer, brake tester, etc. to perform a vehicle test.


    1. Check that the engine switch is off.

    2. Use the following methods to change the 4WD ECU to test mode.


      1. Test mode activation by shorting TS terminal


        • With the engine switch off, connect the TS and CG terminals of the DLC3 connector. Then turn the engine switch on (IG) to activate test mode.

          Tech Tips

          When the engine switch is on (IG) and the 4WD lock switch is turned from OFF to ON, the 4WD lock indicator blinks twice and then illuminates.

        Note

        If a part of the 4WD system has a defect, the Master warning light will illuminate.

    3. Check if the combination meter has changed to the test mode display.

    4. Start the engine.

  3. CONFIRM MODE CHANGE

    Tech Tips

    Operate the 4 wheel drive control switch (AWD lock switch), and check that the 4WD control mode changes.

    4 Wheel Drive Control Switch Status AWD Lock Indicator Status AWD Control Status
    OFF Turns off AWD auto mode
    ON Illuminates 4WD lock mode
    Switch changed from OFF to ON Blinks twice, then illuminates At moment of illumination, changes to AWD lock mode