DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM AWD Warning Remains ON

DESCRIPTION

The 4WD ECU assembly is connected to the combination meter assembly via the CAN communication system. If any of the following conditions are detected, the multi-information display indicates a malfunction in the dynamic torque control 4WD/AWD system.


WIRING DIAGRAM

A002BPNE08

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE


  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM AND DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM)


    1. Check if CAN communication system DTCs are output.

      Click here

    2. Check if the dynamic torque control 4WD/AWD system DTC is output.

      Click here


      Chassis > Four Wheel Drive > Trouble Codes

      Tech Tips

      When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

      Result
      Result Proceed to
      Neither CAN communication system DTCs nor dynamic control 4WD/AWD system DTCs are output A
      CAN communication DTCs are output B
      Dynamic torque control 4WD/AWD system DTCs are output C

    B

    GO TO CAN COMMUNICATION (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    C

    REPAIR CIRCUIT INDICATED BY OUTPUT CODE (DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM) Click here

    A

  2. CHECK 4WD ECU ASSEMBLY


    1. Check if the 4WD ECU assembly connector is securely connected.

      OK
      The connector is securely connected.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT CONNECTOR TO ECU CORRECTLY

    OK

  3. INSPECT BATTERY


    1. Check the battery voltage.

      Standard Voltage
      11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK CHARGING SYSTEM Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)


    1. A002COYC28
      *a

      Front view of wire harness connector

      (to 4WD ECU Assembly)

      Disconnect the F14 4WD ECU assembly connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F14-3 (IG1) - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (GND TERMINAL)


    1. Turn the ignition switch off.

    2. A002COYC29
      *a

      Front view of wire harness connector

      (to 4WD ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F14-4 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. READ VALUE USING GTS (4WD WARNING LIGHT)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / Four Wheel Drive / Data List.

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


      Chassis > Four Wheel Drive > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      4WD Warning Light AWD warning (multi-information display) OFF or ON

      OFF: Warning off

      ON: Warning on

      		 -

      Chassis > Four Wheel Drive > Data List
      Tester Display
      4WD Warning Light

    6. Check the GTS display condition of the 4WD warning light.

      Result
      Result Proceed to
      Display of the Data List remains OFF A
      Display of the Data List remains ON B

    A

    GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    B

    REPLACE 4WD ECU ASSEMBLY Click here