Ecd System Tc And Cg Terminal Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DLC3 (CHECK VOLTAGE)

CHECK HARNESS AND CONNECTOR (ECM - DLC3)

CHECK DLC3

INSPECT FUSE (OBD)

ECD SYSTEM - TC and CG Terminal Circuit


DESCRIPTION

Terminals TC and CG are located in the DLC3.
The DLC3 is located under the instrument panel under cover. When terminals TC and CG are connected, DTCs in normal mode or test mode can be read from the Malfunction Indicator Lamp (MIL) in the combination meter.
Also, terminal SIL is located in the DLC3. This terminal is used by the M-OBD communication with intelligent tester.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System.Ecd System Tc And Cg Terminal Circuit


INSPECTION PROCEDURE

1.CHECK DLC3 (CHECK VOLTAGE)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System.Ecd System Tc And Cg Terminal Circuit

  1. Measure the voltage of the DLC3 connector.

    Standard voltage:
    Tester Connection
    		Specified Condition
    D3-16 (BAT) - D3-4 (CG)
    		9 to 14 V


NG
Go to step 3
OK


2.CHECK HARNESS AND CONNECTOR (ECM - DLC3)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System.Ecd System Tc And Cg Terminal Circuit

  1. Disconnect the E23 ECM connector.

  1. Measure the resistance of the wire harness side connectors

    Standard resistance:
    Tester Connection
    		Specified Condition
    E23-15 (SIL) - D3-7 (SIL)
    		Below 1 Ω
    E23-4 (TC) - D3-13 (TC)
    		Below 1 Ω
    E23-15 (SIL) or D3-7 (SIL) - Body ground
    		10 kΩ or higher
    E23-4 (TC) or D3-13 (TC) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM

3.CHECK DLC3


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System.Ecd System Tc And Cg Terminal Circuit

  1. Measure the resistance of the DLC3 connector and body ground.

    Standard resistance:
    Tester Connection
    		Specified Condition
    D3-4 (CG) - Body ground
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.INSPECT FUSE (OBD)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System.Ecd System Tc And Cg Terminal Circuit

  1. Remove the OBD fuse from the instrument panel junction block.

  1. Measure the resistance of the OBD fuse.

    Standard resistance:
    Tester Connection
    		Specified Condition
    OBD fuse
    		Below 1 Ω


NG
CHECK FOR SHORT IN ALL HARNESSES AND COMPONENTS CONNECTED TO FUSE, AND REPLACE FUSE
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BATTERY)