VEHICLE STABILITY CONTROL SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to output the DTCs by blinking the ABS warning light and VSC OFF indicator light.

WIRING DIAGRAM

A01E20NE01

Tech Tips

When the warning light and indicator light continue to blink, there may be a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in one or more ECUs.

INSPECTION PROCEDURE

Note


  • After replacing the brake actuator assembly, perform calibration Click here.

  • Before disconnecting the connector, make sure that there are no problems with the connection.

  • After disconnecting the connector, make sure that the connector case and terminals are not deformed or corroded.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if a CAN communication system DTC is output Click here.

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

    B

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

    A

  2. INSPECT DLC3


    1. A01DZRXE17
      Text in Illustration
      *a Front view of DLC3

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D1-13 (TC) - D1-4 (CG) Ignition switch ON 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (DLC3 - ECM) Click here

    OK

  3. CHECK ECM (DLC3 INPUT)

    SST
    09843-18040

    1. A01DZRXE17
      Text in Illustration
      *a Front view of DLC3

      Turn the ignition switch off.

    2. Connect the ECM connector.

    3. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.

    4. Turn the ignition switch to ON.

    5. Check that the MIL is blinking.

      Result
      Result Proceed to
      MIL is not blinking A
      MIL is blinking for LHD B
      for RHD C

      Tech Tips

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part Click here.


    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

    REPAIR OR REPLACE WIRE HARNESS OR ECM

  4. CHECK HARNESS AND CONNECTOR (DLC3 - ECM)


    1. Turn the ignition switch off.

    2. for 1KD-FTV (for DPF) and 2KD-FTV (for DPF):

      Disconnect the E30 ECM connector.

      for 1KD-FTV (except DPF) and 2KD-FTV (except DPF):

      Disconnect the E5 ECM connector.

      for 1GR-FE:

      Disconnect the E14 ECM connector.

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

      Standard Resistance
      for 1KD-FTV (for DPF) and 2KD-FTV (for DPF)
      Tester Connection Condition Specified Condition
      D1-13 (TC) - E30-23 (TC) Always Below 1 Ω
      D1-13 (TC) - Body ground Always 10 kΩ or higher
      for 1KD-FTV (except DPF) and 2KD-FTV (except DPF)
      Tester Connection Condition Specified Condition
      D1-13 (TC) - E5-11 (TC) Always Below 1 Ω
      D1-13 (TC) - Body ground Always 10 kΩ or higher
      for 1GR-FE
      Tester Connection Condition Specified Condition
      D1-13 (TC) - E14-23 (TC) Always Below 1 Ω
      D1-13 (TC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)


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

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK ECM (DLC3 INPUT)

    SST
    09843-18040

    1. A01DZRXE17
      Text in Illustration
      *a Front view of DLC3

      Turn the ignition switch off.

    2. Connect the ECM connector.

    3. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.

    4. Turn the ignition switch to ON.

    5. Check that the MIL is blinking.

      Result
      Result Proceed to
      MIL is not blinking A
      MIL is blinking for LHD B
      for RHD C

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

    REPAIR OR REPLACE WIRE HARNESS OR ECM