Vehicle Stability Control System (For Vacuum Brake Booster) Brake Warning Light Does Not Come On


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

READ VALUE USING INTELLIGENT TESTER (BRAKE WARNING LIGHT)

VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster) - Brake Warning Light does not Come ON


DESCRIPTION

The skid control ECU is connected to the combination meter via CAN communication.

WIRING DIAGRAM

Refer to Brake Warning Light Remains ON (LandCruiser RM000000YHG0KFX_02.html).

INSPECTION PROCEDURE

NOTICE:
  1. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  2. When replacing the brake actuator assembly, perform calibration (LandCruiser RM000000XHR0BKX.html).
1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if CAN communication system DTCs are output (for LHD without Entry and Start System: LandCruiser RM000000WIB0EDX.html, for LHD with Entry and Start System: LandCruiser RM000000WIB0ECX.html).

    Result
    Result
    		Proceed to
    DTC not output
    		A
    DTC output
    		for LHD without Entry and Start System
    		B
    DTC output
    		for LHD with Entry and Start System
    		C



B
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0BYX.html)

C
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000001RSO0C5X.html)
A


2.READ VALUE USING INTELLIGENT TESTER (BRAKE WARNING LIGHT)

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

    ABS/VSC/TRC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Brake Warning Light
    		Brake warning light / ON or OFF
    		OFF
    		-

  1. When performing the Brake Warning Light Active Test, check Brake Warning Light in the Data List (LandCruiser RM000000XHW0GKX.html).


ABS/VSC/TRC
Tester Display
Test Part
Control Range
Diagnostic Note
Brake Warning Light
Brake warning light
Warning light ON/OFF
Observe the 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
GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000002Z4L055X.html)
A

REPLACE BRAKE ACTUATOR ASSEMBLY (LandCruiser RM0000034UX02TX.html)