Sfi System Tc And Cg Terminal Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DLC3 (TC VOLTAGE)

CHECK HARNESS AND CONNECTOR (DLC3 - ECM)

CHECK IF MIL BLINKS

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


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System  Tc And Cg Terminal Circuit


INSPECTION PROCEDURE

HINT:
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.
  1. The MIL displaying function does not work even though terminals TC and CG of the DLC3 are connected.
  2. The MIL flashes even though terminals TC and CG of the DLC3 are not connected.
1.CHECK DLC3 (TC VOLTAGE)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System  Tc And Cg Terminal Circuit
  1. Turn the ignition switch ON.

  1. Measure the voltage of the DLC3.

    Standard voltage:
    Tester Connection
    Specified Condition
    D3-13 (TC) - D3-4 (CG)
    9 to 14 V


OK
Go to step 3
NG


2.CHECK HARNESS AND CONNECTOR (DLC3 - ECM)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System  Tc And Cg Terminal Circuit
  1. Disconnect the E9 ECM connector.

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

    Standard resistance:
    Tester Connection
    Specified Condition
    D3-13 (TC) - E9-17 (TC)
    Below 1 Ω
    D3-13 (TC) or E9-17 (TC) - Body ground
    10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

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

3.CHECK IF MIL BLINKS
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System  Tc And Cg Terminal Circuit
  1. Turn the ignition switch ON.

  1. Using SST, connect terminals TC and CG of the D3 DLC3 connector.

SST
09843-18040
  1. Check that the MIL blinks.

    OK:
    The MIL blinks.


NG
REPLACE ECM
OK

NO PROBLEM