ANTI-LOCK BRAKE SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals 13 (TC) and 4 (CG) of the DLC3 causes the ECU to display the DTC by blinking the ABS warning light.

WIRING DIAGRAM

A01CJ46E05

Tech Tips

When the warning lights continue to blink, there may be a ground short in the wiring of terminal 13 (TC) of the DLC3 or an internal ground short in one or more ECUs.

INSPECTION PROCEDURE

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

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT DLC3


    1. A01CGTGE03
      Text in Illustration
      *1 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
      D34-13 (TC) - D34-4 (CG) Ignition switch ON 11 to 14 V
      Result
      Result Proceed to
      NG A
      OK B

    B

    INSPECT ECM (DLC3 INPUT) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (DLC3 - ECM)


    1. Turn the ignition switch off.

    2. Disconnect the E40 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D34-13 (TC) - E40-23 (TC) Always Below 1 Ω
      D34-13 (TC) or E40-23 (TC) - Body ground Always 10 kΩ or higher

    4. Reconnect the E40 ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. 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
      D34-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT ECM (DLC3 INPUT)

    SST
    09843-18040

    1. A01CGTGE03
      Text in Illustration
      *1 DLC3

      Turn the ignition switch off.

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

    3. Turn the ignition switch to ON.

    4. Check that the Malfunction Indicator Lamp (MIL) is blinking.

      Result
      Result Proceed to
      Malfunction Indicator Lamp (MIL) is blinking A
      Malfunction Indicator Lamp (MIL) is not blinking B

    B

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

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here