VEHICLE STABILITY CONTROL SYSTEM > TC and CG Terminal Circuit

for Preparation Click here


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


C212087E01

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 (Click here).

1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if CAN communication system DTCs are output (Click here).
    Result 
    Result
    		Proceed to
    DTC not output
    		A
    DTC output
    		B



B
CHECK CAN COMMUNICATION SYSTEM (Click here)
A


2.INSPECT DLC3


    C146309E07

  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
    D47-13 (TC) - D47-4 (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)


    C212082E01

  1. Turn the ignition switch off.
    Text in Illustration 
    *1
    		Front view of DLC3
    *2
    		Front view of wire harness connector
    (to 1KR-FE ECM)
    *3
    		Front view of wire harness connector
    (to 1NR-FE ECM)
    *4
    		Front view of wire harness connector
    (to 1ND-TV ECM)

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    for 1KR-FE 
    Tester Connection
    		Condition
    		Specified Condition
    D47-13 (TC) - A18-40 (TC)
    		Always
    		Below 1 Ω
    D47-13 (TC) - Body ground
    		Always
    		10 kΩ or higher
    for 1NR-FE 
    Tester Connection
    		Condition
    		Specified Condition
    D47-13 (TC) - A18-41 (TC)
    		Always
    		Below 1 Ω
    D47-13 (TC) - Body ground
    		Always
    		10 kΩ or higher
    for 1ND-TV 
    Tester Connection
    		Condition
    		Specified Condition
    D47-13 (TC) - A19-24 (TC)
    		Always
    		Below 1 Ω
    D47-13 (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)


    C146309E08

  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
    D47-4 (CG) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT ECM (TC of DLC3 INPUT)


    C146309E07

  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 (Click here)