VEHICLE STABILITY CONTROL SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to display the DTCs by blinking the ABS warning light and slip indicator light.

WIRING DIAGRAM

A004NZ0E04
*a Skid Control ECU (Brake Actuator Assembly)
*b CAN Communication System

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake actuator assembly), perform the engine variant learning Click here.

Tech Tips

When the warning lights 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.

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. Turn the ignition switch to ON.

    2. A004TVLE02
      Text in Illustration
      *1 Front view of DLC3

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D8-13 (TC) - D8-4 (CG) Ignition switch ON 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (TC OF DLC3 - ECM) Click here

    OK

  3. CHECK ECM (TC OF DLC3 INPUT)


    1. Turn the ignition switch off.

    2. A004TVLE02
      Text in Illustration
      *1 Front view of DLC3

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

      SST
      09843-18040

    3. Turn the ignition switch to ON.

    4. Check that the MIL is blinking.

      Result
      Result Proceed to
      MIL is blinking. A
      MIL is not blinking. B

      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.

      • Refer to the ECM installation procedures:

        for 1AD-FTV Click here

        for 2AD-FTV Click here

        for 2AD-FHV Click here


    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    B

    REPLACE ECM

  4. CHECK HARNESS AND CONNECTOR (TC OF DLC3 - ECM)


    1. A004NNNE02
      Text in Illustration
      *1 Front view of DLC3
      *2

      Front view of wire harness connector

      (to ECM)

      Turn the ignition switch off.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D8-13 (TC) - A40-26 (TC) Always Below 1 Ω
      D8-13 (TC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A004SSHE01
      Text in Illustration
      *1 Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D8-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK ECM (TC OF DLC3 INPUT)


    1. Turn the ignition switch off.

    2. A004TVLE02
      Text in Illustration
      *1 Front view of DLC3

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

      SST
      09843-18040

    3. Turn the ignition switch to ON.

    4. Check that the MIL is blinking.

      Result
      Result Proceed to
      MIL is blinking. A
      MIL is not blinking. B

      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.

      • Refer to the ECM installation procedures:

        for 1AD-FTV Click here

        for 2AD-FTV Click here

        for 2AD-FHV Click here


    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    B

    REPLACE ECM