VEHICLE STABILITY CONTROL SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to display the DTC by blinking the ABS warning light and SLIP indicator light.

WIRING DIAGRAM

A01CCWQE04

INSPECTION PROCEDURE

Tech Tips

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 if the CAN communication system DTC is output Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B
    A
  2. INSPECT DLC3


    1. A01CEOQE66

      Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G8-13 (TC) - G8-4 (CG) Engine switch on (IG) 11 to 14 V
      Result
      Result Proceed to
      NG A
      OK B

    B
    A
  3. CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)


    1. A01CDATE18

      Turn the engine switch off.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G8-13 (TC) - A8-27 (TC) Always Below 1 Ω
      G8-13 (TC) - Body ground Always 10 kΩ or higher

    NG
    OK
  4. CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)


    1. A01CEOQE67

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G8-4 (CG) - Body ground Always Below 1 Ω

    NG
    OK
  5. CHECK ECM (TC of DLC3 INPUT)


    1. A01CEOQE66

      Turn the engine switch off.

    2. Reconnect the ECM connector.

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

      SST
      09843-18040
    4. Turn the engine switch on (IG).

    5. Check that the check engine warning light is blinking.

      Result
      Result Proceed to
      Check engine warning light is blinking A
      Check engine warning light is not blinking B

      Tech Tips

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


    B
    A