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 by displaying the code in the multi-information display.

WIRING DIAGRAM

A01ISKPE09

INSPECTION PROCEDURE

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
      CAN communication system DTC is not output. A
      CAN communication system 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. A01ISOSE29
      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
      H16-13 (TC) - H16-4 (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. A01ISOSE29
      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:



    B

    REPLACE ECM

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

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


    1. A01IUM9E04
      Text in Illustration
      *1 Front view of DLC3
      *2

      Front view of wire harness connector

      (to ECM)
      *3 for AD Series Engine
      *4 for ZR Series Engine

      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
      for AD Series Engine
      Tester Connection Condition Specified Condition
      H16-13 (TC) - A51-26 (TC) Always Below 1 Ω
      H16-13 (TC) - Body ground Always 10 kΩ or higher
      for ZR Series Engine
      Tester Connection Condition Specified Condition
      H16-13 (TC) - A51-41 (TC) Always Below 1 Ω
      H16-13 (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. A01ISOSE30
      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
      H16-4 (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. A01ISOSE29
      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:



    B

    REPLACE ECM

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here