Click here

POWER STEERING SYSTEM TC and CG Terminal Circuit

Click here
Click here
DTC Code DTC Name
  TC and CG Terminal Circuit
Click here

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to display DTCs by blinking the EPS warning light.

Table 1. *a Power Management Control ECU *b Skid Control ECU (Brake Booster with Master Cylinder Assembly) *c Power Steering ECU Assembly *d CAN Communication Line
Click here

WIRING DIAGRAM

Click here

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.

Click here

PROCEDURE


  1. Click here

    CHECK CAN COMMUNICATION SYSTEM


    1. Check for DTCs (Click here).

      OK
      DTCs are not output.

  2. Click here

    CHECK HARNESS AND CONNECTOR (TC of DLC3 - POWER MANAGEMENT CONTROL ECU)


    1. Turn the power switch off.

    2. Disconnect the H1 power management control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H29-13 (TC) - H1-11 (TC) Always Below 1 Ω

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. Click here

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


    1. A0004MIE03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H29-4 (CG) - Body ground Always Below 1 Ω
      Table 2. Text in Illustration
      *a Front view of DLC3

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    CHECK HARNESS AND CONNECTOR (TC of DLC3 - BODY GROUND)


    1. A0005Y9E01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H29-13 (TC) - Body ground Always 10 kΩ or higher
      Table 3. 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 before replacing the part (Click here).

      Result
      Result Proceed to
      OK (for Manual tilt and manual telescopic steering column) A
      OK (for Power tilt and power telescopic steering column) B
      NG C

    • A

      REPLACE POWER STEERING ECU ASSEMBLY (Click here)

    • B

      REPLACE POWER STEERING ECU ASSEMBLY (Click here)

    • C

      REPAIR OR REPLACE WIRE HARNESS OR EACH ECU