VEHICLE STABILITY CONTROL SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to display DTCs by blinking the ABS warning and slip indicator lights.

WIRING DIAGRAM

A01W2IDE01

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information Click here.

Tech Tips

When the indicator lights blink without terminals TC and CG connected, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in one or more ECUs is suspected.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output (See page for with Central Gateway ECU, Click here for without Central Gateway ECU).

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output (w/ Central Gateway ECU). B
      DTCs are output (w/o Central Gateway ECU). C

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    C

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. A01W51EE01
      Text in Illustration
      *a Front view of DLC3

      Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H29-13 (TC) - H29-4 (CG) Engine switch on (IG) 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM) Click here

    OK

  3. REPLACE ECM


    1. A01W51EE01
      Text in Illustration
      *a Front view of DLC3

      Turn the engine switch off.

    2. Replace the ECM (See page for 2AR-FE, for 2GR-FE, Click here for 6AR-FSE).

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

      SST
      09843-18040

    4. Check that the ABS warning and slip indicator lights are blinking.

      OK
      The ABS warning and slip indicator lights are blinking.

      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 parts Click here.


    OK

    END

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

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


    1. Turn the engine switch off.

    2. Disconnect the A22, A64 or A74 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
      H29-13 (TC) - A22-45 (TC) Always Below 1 Ω
      H29-13 (TC) - Body ground Always 10 kΩ or higher
      for 2AR-FE
      Tester Connection Condition Specified Condition
      H29-13 (TC) - A64-23 (TC) Always Below 1 Ω
      H29-13 (TC) - Body ground Always 10 kΩ or higher
      for 6AR-FSE
      Tester Connection Condition Specified Condition
      H29-13 (TC) - A75-33 (TC) Always Below 1 Ω
      H29-13 (TC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01W4LSE04
      Text in Illustration
      *a Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H29-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE ECM


    1. A01W51EE01
      Text in Illustration
      *a Front view of DLC3

      Replace the ECM (See page for 2AR-FE, for 2GR-FE, Click here for 6AR-FSE).

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

      SST
      09843-18040

    3. Check that the ABS warning and slip indicator lights are blinking.

      OK
      The ABS warning and slip indicator lights are blinking.

      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 parts Click here.


    OK

    END

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here