POWER STEERING 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 EPS warning light.

WIRING DIAGRAM

C334991E02

CAUTION / NOTICE / HINT

Note:

If the power steering ECU assembly has been replaced with a new one, perform assist map writing and torque sensor zero point calibration.

Click here

Tip:

When the warning 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

    1. Check for DTCs.

      w/ Central Gateway ECU:Click here

      w/o Central Gateway ECU:Click here

    Result

    Result

    Proceed to

    DTCs are not output.

    A

    DTCs are output.

    B
    B

    GO TO CAN COMMUNICATION

    w/ Central Gateway ECU:Click here

    w/o Central Gateway ECU:Click here

    A

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

    1. Turn the ignition switch off.

    2. Disconnect the A169, A101, A50 or A173 ECM connector.

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

      Standard Resistance

      Table 1. for 1ND-TV (w/ Glow Plug Controller)

      Tester Connection

      Condition

      Specified Condition

      E11-13(TC) - A169-50(TC)

      Always

      Below 1 Ω

      E11-13 (TC) or A169-50(TC)- Body ground

      Always

      10 kΩ or higher
      Table 2. for 1ND-TV (w/o Glow Plug Controller)

      Tester Connection

      Condition

      Specified Condition

      E11-13(TC) - A101-24(TC)

      Always

      Below 1 Ω

      E11-13 (TC) or A101-24(TC)- Body ground

      Always

      10 kΩ or higher
      Table 3. for 1NR-FE

      Tester Connection

      Condition

      Specified Condition

      E11-13(TC) - A50-23(TC)

      Always

      Below 1 Ω

      E11-13 (TC) or A50-23(TC)- Body ground

      Always

      10 kΩ or higher
      Table 4. for 8NR-FTS

      Tester Connection

      Condition

      Specified Condition

      E11-13(TC) - A173-33(TC)

      Always

      Below 1 Ω

      E11-13 (TC) or A173-33(TC)- Body ground

      Always

      10 kΩ or higher
      Table 5. for 1ZR-FAE, 1ZR-FE, 2ZR-FE

      Tester Connection

      Condition

      Specified Condition

      E11-13(TC) - A50-33(TC)

      Always

      Below 1 Ω

      E11-13 (TC) or A50-33(TC)- Body ground

      Always

      10 kΩ or higher
      Table 6. for 1WW

      Tester Connection

      Condition

      Specified Condition

      E11-13(TC) - A50-50(TC)

      Always

      Below 1 Ω

      E11-13 (TC) or A50-50(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. C207407C28

      *a

      Front view of DLC3

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E11-4 (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 before replacing the part.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE POWER STEERING ECU ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU