VEHICLE STABILITY CONTROL SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals 13 (TC) and 4 (CG) of the DLC3 causes the ECU to display the DTC by blinking the ABS warning light and SLIP indicator light.

WIRING DIAGRAM

A011715E01

Tech Tips

When the warning lights continue to blink, a ground short in the wiring of terminal 13 (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 DTC is output Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. A011AR0E05
      Text in Illustration
      *1 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. Turn the ignition switch off.

    2. Disconnect the A18 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) or A18-40 (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) or A18-41 (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. 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. A011AR0E05
      Text in Illustration
      *1 DLC3

      Reconnect the A18 ECM connector.

    2. 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 malfunction indicator lamp is blinking.

      Result
      Result Proceed to
      MIL is blinking A
      MIL is not blinking (for 1KR-FE) B
      MIL is not blinking (for 1NR-FE) C

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here