ELECTRONICALLY CONTROLLED BRAKE SYSTEM TC and CG Terminal Circuit

DTC Code DTC Name
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, brake warning / yellow (minor malfunction) and/or slip indicator lights.

WIRING DIAGRAM

C313396E05
Tip:

When the warning 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.

CAUTION / NOTICE / HINT

Note:

When replacing the skid control ECU (brake booster with master cylinder assembly), perform initialization and calibration of the linear solenoid valve.

Click here

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    1. Check if CAN communication system DTCs are output.

      for LHD:Click hereClick hereClick here

      for RHD:Click hereClick hereClick here

    Result

    Result

    Proceed to

    DTCs are not output.

    A

    DTCs are output.

    B
    B

    INSPECT CAN COMMUNICATION SYSTEM

    for LHD:Click here

    for RHD:Click here

    A

  2. CHECK HARNESS AND CONNECTOR (TC of DLC3 - HYBRID VEHICLE CONTROL ECU)

    1. Disconnect the G194 hybrid vehicle control ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G14-13 (TC) - G194-28 (TC)

      Always

      Below 1 Ω

      G14-13 (TC) - Body ground

      Always

      10 kΩ or higher

      G194-28 (TC) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. C269109C58

      *a

      Front view of DLC3

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G14-4 (CG) - Body ground

      Always

      Below 1 Ω
      Tip:

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

    for LHD:Click here

    for RHD:Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR