VEHICLE STABILITY CONTROL SYSTEM(for TMC Made) 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

A01VIHFE01

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.

CAUTION / NOTICE / HINT

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 is not output A
      DTC is output B

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. A01VGB3E01
      Text in Illustration
      *a 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
      F4-13 (TC) - F4-4 (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 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
      F4-13 (TC) - A71-30 (TC) Always Below 1 Ω
      F4-13 (TC) - Body ground Always 10 kΩ or higher
      Standard Resistance (for 1NR-FE)
      Tester Connection Condition Specified Condition
      F4-13 (TC) - A58-23 (TC) Always Below 1 Ω
      F4-13 (TC) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.


    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
      F4-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT ECM (TC of DLC3 INPUT)


    1. A01VEMEE01
      Text in Illustration
      *a Front view of DLC3

      Turn the ignition switch off.

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

    3. Turn the ignition switch to ON.

    4. Check that the malfunction indicator lamp is blinking.

      Result
      Result Proceed to
      Malfunction indicator lamp is blinking A
      Malfunction indicator lamp is not blinking (for LHD) B
      Malfunction indicator lamp is not blinking (for RHD) C

    A

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

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here