VEHICLE STABILITY CONTROL SYSTEM > VSC OFF Indicator Light does not Come ON

for Preparation Click here


DESCRIPTION

The skid control ECU is connected to the combination meter via CAN communication.
Pressing the VSC OFF switch turns off traction control and pressing and holding this switch turns off traction and VSC controls. If VSC control turns OFF, the VSC OFF indicator light will come on.
The VSC OFF indicator light will blink when the skid control ECU stores a DTC.

WIRING DIAGRAM

Refer to VSC OFF Indicator Light Remains ON (Click here).

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the brake actuator assembly, perform zero point calibration (Click here).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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 SKID CONTROL ECU (CSW TERMINAL)

  1. Turn the ignition switch off.



    E175972E09

  1. Disconnect the A16 or A17 skid control ECU connector.
    Text in illustration 
    *1
    		Front view of wire harness connector
    (to Skid Control ECU)

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

    Standard Resistance:
    for LHD 
    Tester Connection
    		Switch Condition
    		Specified Condition
    A16-30 (CSW) - Body ground
    		VSC OFF Switch held ON
    		Below 1 Ω
    A16-30 (CSW) - Body ground
    		VSC OFF Switch OFF (Not pressed)
    		10 kΩ or higher
    for RHD 
    Tester Connection
    		Switch Condition
    		Specified Condition
    A17-30 (CSW) - Body ground
    		VSC OFF Switch held ON
    		Below 1 Ω
    A17-30 (CSW) - Body ground
    		VSC OFF Switch OFF (Not pressed)
    		10 kΩ or higher



NG
Go to step 4
OK


3.INSPECT COMBINATION METER ASSEMBLY

  1. Reconnect the skid control ECU connector.

  1. Connect the intelligent tester to the DLC3.

  1. Perform Active Test of the combination meter using the intelligent tester (Click here).

    OK:
    The VSC OFF indicator light turns ON or OFF in accordance with the intelligent tester.



NG
REPLACE COMBINATION METER ASSEMBLY (Click here)
OK

REPLACE BRAKE ACTUATOR ASSEMBLY (Click here)  

4.INSPECT VSC OFF SWITCH

  1. Disconnect the VSC OFF switch.



    C156489E05

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    3 (E) - 6 (+)
    		Switch is pushed in
    		Below 1 Ω
    3 (E) - 6 (+)
    		Switch is not pushed in
    		10 kΩ or higher



NG
REPLACE VSC OFF SWITCH (Click here)
OK


5.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH)


    C197524E01

  1. Measure the resistance according to the value(s) in the table below.
    Text in illustration 
    *1
    		Front view of wire harness connector
    (to Skid Control ECU)
    *2
    		Front view of wire harness connector
    (to VSC OFF Switch)

    Standard Resistance:
    for LHD 
    Tester Connection
    		Condition
    		Specified Condition
    A16-30 (CSW) - D54-6 (+)
    		Always
    		Below 1 Ω
    A16-30 (CSW) - Body ground
    		Always
    		10 kΩ or higher
    D54-3 (E) - Body ground
    		Always
    		Below 1 Ω
    for RHD 
    Tester Connection
    		Condition
    		Specified Condition
    A17-30 (CSW) - D54-6 (+)
    		Always
    		Below 1 Ω
    A17-30 (CSW) - Body ground
    		Always
    		10 kΩ or higher
    D54-3 (E) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (Click here)