VEHICLE STABILITY CONTROL 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 and slip indicator lights.

WIRING DIAGRAM

C256466E38

CAUTION / NOTICE / HINT

Note:

When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration (Click here).

Tip:

When the indicator lights continue 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

    Click here

    INSPECT CAN COMMUNICATION SYSTEM

    (Click here)

  2. INSPECT DLC3

    1. U123374E01

      Turn the ignition switch to ON.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      H16-13 (TC) - H16-4 (CG)

      Ignition switch ON

      11 to 14 V
      Table 1. Text in Illustration

      *a

      Front view of DLC3

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

  3. REPLACE ECM

    1. U123374E01

      Turn the ignition switch off.

    2. Replace the ECM (Click herefor 1ZR-FAE,Click herefor 2ZR-FAE,Click herefor 1WW).

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

    4. Check that the ABS warning and slip indicator lights are blinking.

      OK

      The ABS warning and slip indicator lights are blinking.

      Table 2. Text in Illustration

      *a

      Front view of DLC3
      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).

    09843-18040

    END

    REPLACE BRAKE ACTUATOR ASSEMBLY

    (Click here)

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

    1. Turn the ignition switch off.

    2. Disconnect the A76 ECM connector.

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

      Standard Resistance (for ZR Series Engine)

      Tester Connection

      Condition

      Specified Condition

      H16-13 (TC) - A76-33 (TC)

      Always

      Below 1 Ω

      H16-13 (TC) or A76-33 (TC) - Body ground

      Always

      10 kΩ or higher

      Standard Resistance (for 1WW)

      Tester Connection

      Condition

      Specified Condition

      H16-13 (TC) - A76-50 (TC)

      Always

      Below 1 Ω

      H16-13 (TC) or A76-50 (TC) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. U123375E01

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H16-4 (CG) - Body ground

      Always

      Below 1 Ω
      Table 3. Text in Illustration

      *a

      Front view of DLC3

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. REPLACE ECM

    1. U123374E01

      Replace the ECM (Click herefor 1ZR-FAE,Click herefor 2ZR-FAE,Click herefor 1WW).

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

    3. Check that the ABS warning and slip indicator lights are blinking.

      OK

      The ABS warning and slip indicator lights are blinking.

      Table 4. Text in Illustration

      *a

      Front view of DLC3

    09843-18040

    END

    REPLACE BRAKE ACTUATOR ASSEMBLY

    (Click here)