VEHICLE STABILITY CONTROL SYSTEM TC and CG Terminal Circuit

DESCRIPTION

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

WIRING DIAGRAM

A019JX8E03

Tech Tips

When the warning lights continue to blink, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in one or more ECUs is suspected.

INSPECTION PROCEDURE

Note

When replacing the brake actuator assembly, perform zero point calibration and store system information Click here.

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

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. A019KCZE96
      Text in Illustration
      *1 DLC3

      Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F17-13 (TC) - F17-4 (CG) Engine switch on (IG) 11 to 14 V
      Result
      Result Proceed to
      NG A
      OK B

    B

    CHECK ECM (TC of DLC3 INPUT) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)


    1. A019NVRE03
      Text in Illustration
      *1 DLC3
      *2

      Front view of wire harness connector

      (to ECM)
      *3 for 2GR-FE
      *4 for 1AR-FE

      Turn the engine switch off.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      for 2GR-FE
      Tester Connection Condition Specified Condition
      F17-13 (TC) - A43-16 (TC) Always Below 1 Ω
      F17-13 (TC) - Body ground Always 10 kΩ or higher
      for 1AR-FE
      Tester Connection Condition Specified Condition
      F17-13 (TC) - A70-7 (TC) Always Below 1 Ω
      F17-13 (TC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)


    1. A019KCZE97
      Text in Illustration
      *1 DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F17-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK ECM (TC of DLC3 INPUT)


    1. A019KCZE98
      Text in Illustration
      *1 DLC3

      Turn the engine switch off.

    2. Reconnect the ECM connector.

    3. Using SST, connect terminals TC and CG of the DLC3.

      SST
      09843-18040

    4. Turn the engine switch on (IG).

    5. Check that the check engine warning light is blinking.

      Result
      Result Proceed to
      Check engine warning light is blinking A
      Check engine warning light is not blinking B

      Tech Tips

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


    B

    REPAIR OR REPLACE WIRE HARNESS OR ECM (TC of ECM CIRCUIT)

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here