DYNAMIC REAR STEERING SYSTEM DRS System does not Operate

CAUTION / NOTICE / HINT

Note

If the rear steering link assembly or the rear suspension is removed and installed, replaced, or adjusted, after performing actuator calibration value initialization, perform neutral position memorization and motor rotation angle sensor calibration.

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PROCEDURE


  1. READ VALUE USING GTS


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. According to the display on the GTS, read the Data List.


      Chassis > DRS > Data List
      Tester Display Measurement Item Range Normal Condition
      Limited Control Count(Overheat-Weak) Limited control count (overheat-weak)

      Min.: 0

      Max.: 255

      		 0
      Limited Control Count(Overheat-Strong) Limited control count (overheat-strong)

      Min.: 0

      Max.: 255

      		 0
      N Pos Stop Control Count N pos stop control count

      Min.: 0

      Max.: 255

      		 0
      Cur Pos Stop Control Count Cur pos stop control count

      Min.: 0

      Max.: 255

      		 0
      Prompt Stop Control Count Prompt stop control count

      Min.: 0

      Max.: 255

      		 0
      Power Supply Voltage Lowering Control Count Power supply voltage lowering control count

      Min.: 0

      Max.: 255

      		 0
      Limited Control Count(System Heavily-loaded) Limited control count (system heavily-loaded)

      Min.: 0

      Max.: 255

      		 0

      Chassis > DRS > Data List
      Tester Display
      Limited Control Count(Overheat-Weak)
      Limited Control Count(Overheat-Strong)
      N Pos Stop Control Count
      Cur Pos Stop Control Count
      Prompt Stop Control Count
      Power Supply Voltage Lowering Control Count
      Limited Control Count(System Heavily-loaded)

      Tech Tips

      When the power source voltage is low or high, or overheating protection is operating, the system is stopped temporarily.

      Result
      Result Proceed to
      One of the Data List items has a count of 1 or more. A
      Other than above B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CUSTOMER PROBLEM ANALYSIS


    1. Check if the system stopped operating under severe driving conditions, such as on a rocky or muddy road.

      Tech Tips

      When the load torque is very large, such as when driving on bad roads, the actuator can overheat easily and the system is stopped to prevent overheating.

      Result
      Result Proceed to
      The system stopped under non-severe conditions. A
      The system stopped under severe driving conditions. B

    B

    GO TO STEP 4 Click here

    A

  3. CHECK REAR STEERING LINK ASSEMBLY


    1. Perform actuator forced activation and check if abnormal noises or vibration comes from the rear steering link assembly.

      Click here

      Result
      Result Proceed to
      No abnormal noise or vibration A
      Abnormal noise or vibration coming from rear steering link assembly B

    B

    REPLACE REAR STEERING LINK ASSEMBLY Click here

    A

  4. CHECK REAR STEERING OPERATION


    1. Perform actuator forced activation and confirm the operation of the rear steering.

      Click here


      Chassis > DRS > Utility
      Tester Display
      Activate Rear Steering Motor
      Result
      Result Proceed to
      The rear wheels turn when actuator forced activation is performed A
      The rear wheels do not turn when actuator forced activation is performed B

    A

    END

    B

    REPLACE REAR STEERING LINK ASSEMBLY Click here