Vehicle Stability Control System (For Hydraulic Brake Booster) Multi-Terrain Select Indicator Light Remains On


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK LIN COMMUNICATION LINE

READ VALUE USING GTS (OFF-ROAD GUIDANCE SWITCH AND DIAL SWITCH SIGNAL)

INSPECT COMBINATION METER ASSEMBLY

CHECK HARNESS AND CONNECTOR (CENTER CLUSTER MODULE SWITCH - DRIVING SUPPORT SWITCH CONTROL ECU)

INSPECT CENTER CLUSTER MODULE SWITCH

VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster) - Multi-terrain Select Indicator Light Remains ON


DESCRIPTION

Refer to Multi-terrain Select Indicator Light does not Come ON (LandCruiser RM0000045Z8019X_01.html).

WIRING DIAGRAM

Refer to Multi-terrain Select Indicator Light does not Come ON (LandCruiser RM0000045Z8019X_02.html).

INSPECTION PROCEDURE

NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform calibration (LandCruiser RM00000452J00ZX.html).
1.CHECK LIN COMMUNICATION LINE

  1. Use the GTS to check if the LIN communication system is functioning normally.

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



B
GO TO LIN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0BWX.html)
A


2.READ VALUE USING GTS (OFF-ROAD GUIDANCE SWITCH AND DIAL SWITCH SIGNAL)

  1. Turn the ignition switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. Enter the following menus: Body Electrical / D-SEAT SW / Data List.

  1. Check the Data List for proper functioning of the multi-terrain select switch (center cluster module switch) and multi-terrain select road mode selector (center cluster module switch).

    D-SEAT SW
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Off-road Guidance Switch
    		Multi-terrain select switch/ ON or OFF
    		ON: Switch on
    OFF: Switch off
    		-
    Dial Switch Signal 1
    		Crawl speed selector/Multi-terrain select road mode selector signal 1/ ON or OFF
    		Switches between ON and OFF according to the ON/OFF Combination Chart (LandCruiser RM00000452G01FX_04_0009.html)
    		-
    Dial Switch Signal 2
    		Crawl speed selector/Multi-terrain select road mode selector signal 2/ ON or OFF
    		-
    Dial Switch Signal 3
    		Crawl speed selector/Multi-terrain select road mode selector signal 3/ ON or OFF
    		-

    OK:
    The GTS display changes according to multi-terrain select switch (center cluster module switch) and multi-terrain select road mode selector (center cluster module switch) operation.


NG
Go to step 4
OK


3.INSPECT COMBINATION METER ASSEMBLY

  1. Perform an Active Test of the combination meter assembly using the GTS (LandCruiser RM0000012G70JTX.html).

    OK:
    The multi-terrain select indicator light turns on or off in accordance with the Active Test operation.
    Result
    Result
    		Proceed to
    NG
    		A
    OK (for LHD)
    		B
    OK (for RHD)
    		C


B
REPLACE MASTER CYLINDER SOLENOID (LandCruiser RM00000171U02DX.html)

C
REPLACE MASTER CYLINDER SOLENOID (LandCruiser RM00000171U02EX.html)
A

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000002Z4L055X.html)

4.CHECK HARNESS AND CONNECTOR (CENTER CLUSTER MODULE SWITCH - DRIVING SUPPORT SWITCH CONTROL ECU)

  1. Disconnect the G156 center cluster module switch connector.

  1. Disconnect the G162 driving support switch control ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G162-8 (MTS) - G156-20 (FRE)
    		Always
    		Below 1 Ω
    G162-4 (MOD1) - G156-17 (ECU)
    		Always
    		Below 1 Ω
    G162-11 (MOD3) - G156-19 (DN)
    		Always
    		Below 1 Ω
    G162-2 (MOD2) - G156-18 (UP)
    		Always
    		Below 1 Ω
    G156-24 (E) - Body ground
    		Always
    		Below 1 Ω
    G162-8 (MTS) or G156-20 (FRE) - Body ground
    		Always
    		10 kΩ or higher
    G162-4 (MOD1) or G156-17 (ECU) - Body ground
    		Always
    		10 kΩ or higher
    G162-11 (MOD3) or G156-19 (DN) - Body ground
    		Always
    		10 kΩ or higher
    G162-2 (MOD2) or G156-18 (UP) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT CENTER CLUSTER MODULE SWITCH

  1. Remove the center cluster module switch (LandCruiser RM000005L2H001X.html).

  1. Inspect the multi-terrain select switch (center cluster module switch) and multi-terrain select road mode selector (center cluster module switch) (LandCruiser RM000005L2F001X.html).



NG
REPLACE CENTER CLUSTER MODULE SWITCH (LandCruiser RM000005L2H001X.html)
OK

REPLACE DRIVING SUPPORT SWITCH CONTROL ECU (LandCruiser RM00000466X024X.html)