Vehicle Stability Control System (For Sedan) Tc And Cg Terminal Circuit

Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

INSPECT DLC3

CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)

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

INSPECT ECM (TC of DLC3 INPUT)

VEHICLE STABILITY CONTROL SYSTEM (for Sedan) - 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 VSC OFF indicator light.

WIRING DIAGRAM


Yaris. Ncp93, 131.Brake Control Dynamic Control Systems.Anti-Lock Brake System (For Sedan).Vehicle Stability Control System (For Sedan) Tc And Cg Terminal Circuit

HINT:
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.

INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform zero point calibration (YARIS_NCP93 RM000000XHR06QX.html).
1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if CAN communication system DTCs are output (YARIS_NCP93 RM000001D3E00OX.html).

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


B
CHECK CAN COMMUNICATION SYSTEM (YARIS_NCP93 RM000001D3500JX.html)
A


2.INSPECT DLC3


    Yaris. Ncp93, 131.Brake Control Dynamic Control Systems.Anti-Lock Brake System (For Sedan).Vehicle Stability Control System (For Sedan) Tc And Cg Terminal Circuit

  1. Turn the ignition switch to ON.

    Text in Illustration
    *1
    		Front view of DLC3

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D15-13 (TC) - D15-4 (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 (TC of DLC3 - ECM)

  1. Turn the ignition switch off.

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D15-13 (TC) - A21-27 (TC)
    		Always
    		Below 1 Ω
    D15-13 (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)


    Yaris. Ncp93, 131.Brake Control Dynamic Control Systems.Anti-Lock Brake System (For Sedan).Vehicle Stability Control System (For Sedan) Tc And Cg Terminal Circuit

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

    Text in Illustration
    *1
    		Front view of DLC3
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D15-4 (CG) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT ECM (TC of DLC3 INPUT)


    Yaris. Ncp93, 131.Brake Control Dynamic Control Systems.Anti-Lock Brake System (For Sedan).Vehicle Stability Control System (For Sedan) Tc And Cg Terminal Circuit

  1. Turn the ignition switch off.

    Text in Illustration
    *1
    		Front view of DLC3

  1. Reconnect the ECM connector.

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

  1. Turn the ignition switch to ON.

  1. 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


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

REPLACE BRAKE ACTUATOR ASSEMBLY (YARIS_NCP93 RM000001BXP02FX.html)