ACTIVE TORQUE CONTROL 4WD SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the AWD control ECU to display 2-digit DTCs by flashing the AWD warning light.

Tech Tips

When each warning light remains blinking, a short to ground in the wiring of terminal TC of the DLC3 or an internal short to ground in each ECU is suspected.

WIRING DIAGRAM

A01EJO0E07

INSPECTION PROCEDURE

Tech Tips

Check the condition of each related circuit connector before troubleshooting Click here.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if the CAN communication DTC is output Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    REPAIR CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM AND BODY GROUND)


    1. A01ELELE55
      Text in Illustration
      *1 DLC3
      *2

      Front view of wire harness connector

      (to ECM)

      Turn the ignition switch off.

    2. Disconnect the ECM connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard Resistance

      Tester Connection

      (DLC3 - ECM)

      		 Condition Specified Condition
      D1-13 (TC) - A49-7 (TC) Always Below 1 Ω
      D1-13 (TC) - Body Ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)


    1. A01EJTBE01
      Text in Illustration
      *1 DLC3

      Measure the resistance of the DLC3.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D1-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)


    1. A01EJTBE02
      Text in Illustration
      *1 DLC3

      Measure the resistance of the DLC3.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D1-13 (TC) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE AWD CONTROL ECU Click here