ANTI-LOCK BRAKE 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.

WIRING DIAGRAM

B0024VZE02

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake actuator assembly), perform Test Mode (Signal Check) to acquire the rear differential lock identification information.

Click here

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      DTC is not output
      DTC is output

    DTC is output

    CHECK CAN COMMUNICATION SYSTEM for LHD: Click here
    CHECK CAN COMMUNICATION SYSTEM for RHD: Click here

    DTC is not output

  2. INSPECT DLC3


    1. B002735C35
      *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
      G8-13 (TC) - G8-4 (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


    1. B002735C35
      *a Front view of DLC3

      Turn the ignition switch off.

    2. Replace the ECM.

      for 1GD-FTV: Click here

      for 2GD-FTV: Click here

      for 2KD-FTV: Click here

      for 1TR-FE: Click here

      for 2TR-FE: Click here

      for 5L-E: Click here

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

      SST
      09843-18040

    4. Check that the ABS warning light are blinking.

      OK
      The ABS warning light are blinking.
      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 G46*1, G85*2, G84*3 or G121*4 ECM connector.


      • *1: for 1TR-FE and 2TR-FE

      • *2: for 1GD-FTV and 2GD-FTV

      • *3: for 2KD-FTV

      • *4: for 5L-E

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

      Standard Resistance
      for 1TR-FE and 2TR-FE:
      Tester Connection Condition Specified Condition
      G8-13 (TC) - G46-19 (TC) Always Below 1 Ω
      G8-13 (TC) or G46-19 (TC) - Body ground Always 10 kΩ or higher
      for 1GD-FTV and 2GD-FTV:
      Tester Connection Condition Specified Condition
      G8-13 (TC) - G85-25 (TC) Always Below 1 Ω
      G8-13 (TC) or G85-25 (TC) - Body ground Always 10 kΩ or higher
      for 2KD-FTV:
      Tester Connection Condition Specified Condition
      G8-13 (TC) - G84-11 (TC) Always Below 1 Ω
      G8-13 (TC) or G84-11 (TC) - Body ground Always 10 kΩ or higher
      for 5L-E:
      Tester Connection Condition Specified Condition
      G8-13 (TC) - G121-17 (TC) Always Below 1 Ω
      G8-13 (TC) or G121-17 (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. B002735C36
      *a Front view of DLC3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G8-4 (CG) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE ECM


    1. B002735C35
      *a Front view of DLC3

      Replace the ECM.

      for 1GD-FTV: Click here

      for 2GD-FTV: Click here

      for 2KD-FTV: Click here

      for 1TR-FE: Click here

      for 2TR-FE: Click here

      for 5L-E: Click here

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

      SST
      09843-18040

    3. Check that the ABS warning light are blinking.

      OK
      The ABS warning light are blinking.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here