Vehicle Stability Control System Slip Indicator Light Remains On


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

READ VALUE USING INTELLIGENT TESTER (TRC/VSC OFF MODE)

READ VALUE USING INTELLIGENT TESTER (SLIP INDICATOR LIGHT)

INSPECT VSC OFF SWITCH

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

INSPECT NO. 4 TRANSFER INDICATOR SWITCH (REAR DIFFERENTIAL LOCK POSITION SWITCH)

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU EXI3 TERMINAL)

VEHICLE STABILITY CONTROL SYSTEM - Slip Indicator Light Remains ON


DESCRIPTION

The slip indicator light blinks during VSC and/or TRC operation.
When the system fails, the slip indicator light comes on to warn the driver (Toyota Fortuner RM000000XHP09MX.html).
Pressing the VSC OFF switch turns off traction control and pressing and holding this switch turns off traction control and VSC. If traction control turns off, the slip indicator light will come on.
When the transfer position is LL, traction control is stopped and the slip indicator light turns on.

WIRING DIAGRAM

Refer to VSC OFF Indicator Light Remains ON (Toyota Fortuner RM000003O4M007X.html).

INSPECTION PROCEDURE

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

  1. Check for DTCs (Toyota Fortuner RM000000XHV09NX.html).

    Result
    Result
    		Proceed to
    DTC not output
    		A
    DTC output
    		B


B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A


2.READ VALUE USING INTELLIGENT TESTER (TRC/VSC OFF MODE)

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to on and the intelligent tester on.

  1. Select the Data List mode on the intelligent tester (Toyota Fortuner RM000000XHW080X.html).

    ABS/VSC/TRC
    Tester Display
    		Measurement Item / Range
    		Normal Condition
    		Diagnostic Note
    TRC/VSC Off Mode
    		VSC OFF switch / Normal, TRC OFF, Unknown or VSC OFF
    		Normal: Normal mode
    TRC OFF: TRC off mode
    VSC OFF: VSC off mode
    		-

  1. Using the intelligent tester, check that the condition on the intelligent tester changes according to VSC OFF switch operation.

    OK:
    The intelligent tester display changes according to VSC OFF switch operation.


NG
Go to step 4
OK


3.READ VALUE USING INTELLIGENT TESTER (SLIP INDICATOR LIGHT)

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and the tester on.

  1. Select the Data List mode on the intelligent tester (Toyota Fortuner RM000000XHW080X.html).

    ABS/VSC/TRC
    Tester Display
    		Measurement Item / Range
    		Normal Condition
    		Diagnostic Note
    Slip Indicator Light
    		Slip indicator light /
    ON or OFF
    		ON: Indicator light ON
    OFF: Indicator light OFF
    		-

  1. Perform the Active Test of the skid control ECU using the intelligent tester (Toyota Fortuner RM000000XHW080X.html).


ABS/VSC/TRC
Tester Display
Test Part
Control Range
Diagnostic Note
Slip Indicator Light
Slip indicator light
Indicator light ON / OFF
Observe combination meter

Result
Result
Proceed to
Data List Display
Data List Display When Performing Active Test ON/OFF Operation
ON
Does not change between ON and OFF
A
Changes between ON and OFF
B
OFF
Does not change between ON and OFF
A
Changes between ON and OFF
B


B
REPLACE COMBINATION METER ASSEMBLY
A

REPLACE BRAKE ACTUATOR ASSEMBLY

4.INSPECT VSC OFF SWITCH


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Slip Indicator Light Remains On

  1. Turn the ignition switch off.

  1. Remove the VSC OFF switch (Toyota Fortuner RM000001WZ200QX.html).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    3 - 4
    		Switch is pushed and held
    		Below 1 Ω
    3 - 4
    		Switch is not pushed
    		10 kΩ or higher


NG
REPLACE VSC OFF SWITCH
OK


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

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Slip Indicator Light Remains On

  1. Turn the ignition switch off.

  1. Disconnect the VSC OFF switch connector.

  1. Disconnect the skid control ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S25-30 (CSW) - V5-3
    		Always
    		Below 1 Ω
    S25-30 (CSW) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT NO. 4 TRANSFER INDICATOR SWITCH (REAR DIFFERENTIAL LOCK POSITION SWITCH)

  1. Remove the rear differential lock position switch.



    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Slip Indicator Light Remains On

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Pushed in
    		Below 1 Ω
    Released
    		10 kΩ or higher


NG
REPLACE NO. 4 TRANSFER INDICATOR SWITCH
OK


7.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU EXI3 TERMINAL)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System.Vehicle Stability Control System Slip Indicator Light Remains On

  1. Turn the ignition switch off.

  1. Disconnect the skid control ECU connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    S25-28 (EXI3) - Body ground
    		Ignition switch ON
    		11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE BRAKE ACTUATOR ASSEMBLY