ANTI-LOCK BRAKE SYSTEM TC and CG Terminal Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01DS16E33

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 calibration Click here.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output (for LHD without Entry and Start System: Click here, for RHD without Entry and Start System: Click here.

      Result
      Result Proceed to
      DTC not output A
      DTC output for LHD without Entry and Start System B
      DTC output for RHD without Entry and Start System C

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    A

  2. INSPECT DLC3


    1. A01DTGNE17
      Text in Illustration
      *a Front view of DLC3

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G48-13 (TC) - G48-4 (CG) Ignition switch ON 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (DLC3 - ECM) Click here

    OK

  3. INSPECT ECM (DLC3 INPUT)

    SST
    09843-18040

    1. Turn the ignition switch off.

    2. A01DTGNE17
      Text in Illustration
      *a Front view of DLC3

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

    3. Turn the ignition switch to ON.

    4. Check that the MIL is blinking.

      Result
      Result Proceed to
      MIL is blinking A
      MIL is not blinking B

      Tech Tips

      Refer to the ECM installation procedure (for 5L-E: Click here, for 2TR-FE: Click here


    B

    REPAIR OR REPLACE WIRE HARNESS OR ECM

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (DLC3 - ECM)


    1. Turn the ignition switch off.

    2. for 5L-E:


      1. Disconnect the G61 ECM connector.

    3. for 2TR-FE:


      1. Disconnect the G60 ECM connector.

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

      Standard Resistance
      for 5L-E:
      Tester Connection Condition Specified Condition
      G48-13 (TC) - G61-4 (TC) Always Below 1 Ω
      G48-13 (TC) - Body ground Always 10 kΩ or higher
      for 2TR-FE:
      Tester Connection Condition Specified Condition
      G48-13 (TC) - G60-13 (TC) Always Below 1 Ω
      G48-13 (TC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G48-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT ECM (DLC3 INPUT)

    SST
    09843-18040

    1. Turn the ignition switch off.

    2. Connect the ECM connector.

    3. A01DTGNE17
      Text in Illustration
      *a Front view of DLC3

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

    4. Turn the ignition switch to ON.

    5. Check that the MIL is blinking.

      Result
      Result Proceed to
      MIL is blinking A
      MIL is not blinking B

    B

    REPAIR OR REPLACE WIRE HARNESS OR ECM

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here