ANTI-LOCK BRAKE SYSTEM(for Type A) 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 light.

WIRING DIAGRAM

A01D4N5E01

CAUTION / NOTICE / HINT

Tech Tips

When the indicator light continues 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.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

      Click here

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. Turn the ignition switch to ON.

    2. A01D6BPC11
      *a Front view of DLC3

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E11-13 (TC) - E11-4 (CG) Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  3. REPLACE ECM

    A01D6BPC11
    *a Front view of DLC3

    1. Turn the ignition switch off.

    2. Replace the ECM.

      for 1NR-FE: Click here

      for 1ZR-FE: Click here

      for 1ND-TV: Click here

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

      SST
      09843-18040

    4. Check that the ABS warning light is blinking.

      OK
      The ABS warning light is 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

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

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


    1. Turn the ignition switch off.

    2. Disconnect the A50 or A101 ECM connector.

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

      for 1NR-FE, 1ZR-FE
      Tester Connection Condition Specified Condition
      E11-13 (TC) - A50-23 (TC) Always Below 1 Ω
      E11-13 (TC) or A50-23 (TC) - Body ground Always 10 kΩ or higher
      for 1ND-TV
      Tester Connection Condition Specified Condition
      E11-13 (TC) - A101-24 (TC) Always Below 1 Ω
      E11-13 (TC) or A101-24 (TC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01D6BPC12
      *a Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E11-4 (CG) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE ECM

    A01D6BPC11
    *a Front view of DLC3

    1. Replace the ECM.

      for 1NR-FE: Click here

      for 1ZR-FE: Click here

      for 1ND-TV: Click here

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

      SST
      09843-18040

    3. Check that the ABS warning light is blinking.

      OK
      The ABS warning light is 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

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here