VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster) TC and CG Terminal Circuit

DESCRIPTION

DTC output mode is set by connecting terminals TC and CG of the DLC3.

WIRING DIAGRAM

A01DS16E15

Tech Tips

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

INSPECTION PROCEDURE

Note

When replacing the master cylinder solenoid, perform calibration Click here.

PROCEDURE


  1. INSPECT DLC3


    1. Turn the ignition switch to ON.

    2. A01DTGNE17
      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
      G48-13 (TC) - G48-4 (CG) Ignition switch ON 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (ECM - DLC3) Click here

    OK

  2. CHECK CAN COMMUNICATION LINE


    1. Turn the ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the intelligent tester on.

    5. Select CAN Bus Check from the System Selection Menu screen and follow the prompts on the screen to inspect the CAN bus (for LHD: Click here, for RHD: Click here.

      OK
      CAN Bus Check indicates no malfunctions in CAN communication.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

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

    C

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

    A

  3. CHECK DTC (CAN COMMUNICATION SYSTEM)


    1. Turn the ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the intelligent tester on.

    5. Check for DTCs (for LHD: Click here, for RHD: Click here.

      Result
      Result Proceed to
      CAN system DTC is not output A
      CAN system DTC is output (for LHD) B
      CAN system DTC is output (for RHD) C

    B

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

    C

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

    A

  4. CHECK HARNESS AND CONNECTOR (ECM - DLC3)


    1. Turn the ignition switch off.

    2. for 1GR-FE:

      Disconnect the G56 ECM connector.

      for 1KD-FTV:

      Disconnect the G58 ECM connector.

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

      Standard Resistance
      for 1GR-FE
      Tester Connection Condition Specified Condition
      G56-28 (TC) - G48-13 (TC) Always Below 1 Ω
      for 1KD-FTV
      Tester Connection Condition Specified Condition
      G58-23 (TC) - G48-13 (TC) Always Below 1 Ω

    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
      G48-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK ECM (DLC3 INPUT)


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

      SST
      09843-18040
    2. A01DTGNE17
      Text in Illustration
      *a Front view of DLC3

      Check that the MIL is blinking.

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

      Tech Tips

      Refer to the ECM installation procedures:

      for 1GR-FE Click here

      for 1KD-FTV Click here


    B

    REPAIR OR REPLACE WIRE HARNESS OR ECM

    A

  7. CHECK DTC (CAN COMMUNICATION SYSTEM)


    1. Turn the ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the intelligent tester on.

    5. Check for DTCs (for LHD: Click here, for RHD: Click here.

      Result
      Result Proceed to
      CAN system DTC is not output (for LHD) A
      CAN system DTC is not output (for RHD) B
      CAN system DTC is output (for LHD) C
      CAN system DTC is output (for RHD) D

    B

    REPLACE MASTER CYLINDER SOLENOID Click here

    C

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

    D

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

    A

    REPLACE MASTER CYLINDER SOLENOID Click here