SFI SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Terminals TC and CG are located in the DLC3. When connecting these terminals, DTCs in normal mode or check mode can be determined through MIL flashing patterns in the combination meter.

WIRING DIAGRAM

A01E17LE01

INSPECTION PROCEDURE

Tech Tips

If either of the following symptoms is present, it is determined that an open or a short in the wire harness has occurred, or there has been a malfunction in the ECM.


  • The MIL displaying function does not work even though terminals TC and CG of the DLC3 are connected.

  • The MIL flashes even though terminals TC and CG of the DLC3 are not connected.

PROCEDURE


  1. CHECK DLC3 (TC VOLTAGE)

    A01E2VIE46

    1. Turn the ignition switch ON.

    2. Measure the voltage of the DLC3.

      Standard voltage
      Tester Connection Specified Condition
      D1-13 (TC) - D1-4 (CG) 9 to 14 V

    OK

    CHECK IF MIL BLINKS Click here

    NG

  2. CHECK WIRE HARNESS (DLC3 - ECM)

    A01DZ13E01

    1. Disconnect the E10 ECM connector.

    2. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Specified Condition
      D1-13 (TC) - E10-17 (TC) Below 1 Ω
      D1-13 (TC) or E10-17 (TC) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR (DLC3 - ECM)

    OK

    REPAIR OR REPLACE HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

  3. CHECK IF MIL BLINKS

    A01E2VIE45

    1. Turn the ignition switch ON.

    2. Using SST, connect terminals TC and CG of the D1 DLC3.

    3. Check that the MIL blinks.

      OK
      The MIL blinks.
      SST
      09843-18040

    NG

    REPLACE ECM

    OK

    NO PROBLEM