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 and VSC OFF indicator light.

WIRING DIAGRAM

A011A13E01

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 Click here.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output Click here.

      Result
      Result Proceed to
      DTC not output A
      DTC output B

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. A0118IXE07
      Text in Illustration
      *1 Front view of DLC3

      Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D47-13 (TC) - D47-4 (CG) Ignition switch ON 11 to 14 V
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT ECM (TC of DLC3 INPUT) Click here

    A

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


    1. A0118IAE01
      Text in Illustration
      *1 Front view of DLC3
      *2

      Front view of wire harness connector

      (to 1KR-FE ECM)
      *3

      Front view of wire harness connector

      (to 1NR-FE ECM)
      *4

      Front view of wire harness connector

      (to 1ND-TV 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
      for 1KR-FE
      Tester Connection Condition Specified Condition
      D47-13 (TC) - A18-40 (TC) Always Below 1 Ω
      D47-13 (TC) - Body ground Always 10 kΩ or higher
      for 1NR-FE
      Tester Connection Condition Specified Condition
      D47-13 (TC) - A18-41 (TC) Always Below 1 Ω
      D47-13 (TC) - Body ground Always 10 kΩ or higher
      for 1ND-TV
      Tester Connection Condition Specified Condition
      D47-13 (TC) - A19-24 (TC) Always Below 1 Ω
      D47-13 (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. A0118IXE08
      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
      D47-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT ECM (TC of DLC3 INPUT)


    1. A0118IXE07
      Text in Illustration
      *1 Front view of DLC3

      Turn the ignition switch off.

    2. Reconnect the ECM connector.

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

    4. Turn the ignition switch to ON.

    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

    B

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

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here