Vehicle Stability Control System Tc And Cg Terminal Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

INSPECT DLC3

CHECK HARNESS AND CONNECTOR (DLC3 - ECM)

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

CHECK ECM (TC OF DLC3 INPUT)

VEHICLE STABILITY CONTROL SYSTEM - TC and CG Terminal Circuit


DESCRIPTION

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

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Tc And Cg Terminal Circuit

HINT:
When the warning lights continue to blink, there may be a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in one or more ECUs.

INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform zero point calibration (Toyota Fortuner RM000000XHR02TX.html).
1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if a CAN communication system DTC is output (Toyota Fortuner RM000002VT900IX.html).

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


B
INSPECT CAN COMMUNICATION SYSTEM
A


2.INSPECT DLC3


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Tc And Cg Terminal Circuit

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D3-13 (TC) - D3-4 (CG)
    		Ignition switch ON
    		11 to 14 V
    Result
    Result
    		Proceed to
    NG
    		A
    OK
    		B


B
Go to step 5
A


3.CHECK HARNESS AND CONNECTOR (DLC3 - ECM)


  1. Turn the ignition switch off.


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Tc And Cg Terminal Circuit

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    for 1KD-FTV
    Tester Connection
    		Condition
    		Specified Condition
    D3-13 (TC) - E4-11 (TC)
    		Always
    		Below 1 Ω
    D3-13 (TC) - Body ground
    		Always
    		10 kΩ or higher
    for 1GR-FE
    Tester Connection
    		Condition
    		Specified Condition
    D3-13 (TC) - E14-23 (TC)
    		Always
    		Below 1 Ω
    D3-13 (TC) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (CG OF DLC3 - BODY GROUND)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Tc And Cg Terminal Circuit

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

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


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK ECM (TC OF DLC3 INPUT)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Tc And Cg Terminal Circuit

  1. Turn the ignition switch off.

  1. Connect the ECM connector.

  1. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.

SST
09843-18040

  1. Turn the ignition switch to ON.

  1. Check that the malfunction indicator lamp is blinking.

    Result
    Result
    		Proceed to
    Malfunction indicator lamp is blinking
    		A
    Malfunction indicator lamp is not blinking
    		B
    HINT:
    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 (Toyota Fortuner RM000000XHN092X.html).


B
REPAIR OR REPLACE WIRE HARNESS OR ECM (TC OF ECM CIRCUIT)
A

REPLACE BRAKE ACTUATOR ASSEMBLY