Anti-Lock Brake System Abs Warning Light Does Not Come On


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK ABS WARNING LIGHT

READ VALUE USING INTELLIGENT TESTER (ABS WARNING LIGHT)

ANTI-LOCK BRAKE SYSTEM - ABS Warning Light does not Come ON


DESCRIPTION

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

WIRING DIAGRAM

Refer to ABS Warning Light Remains ON (LandCruiser RM000000XIH0KEX_02.html).

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the brake actuator assembly, perform calibration (LandCruiser RM000000XHR0BJX.html).
  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 (for LHD without Entry and Start System: LandCruiser RM000000WIB0EDX.html, for RHD without Entry and Start System: LandCruiser RM000000WIB0EFX.html).

    Result
    Result
    		Proceed to
    DTC not output
    		A
    DTC output
    		for LHD without Entry and Start System
    		B
    DTC output
    		for RHD without 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 RM000001RSO0C0X.html)
A


2.CHECK ABS WARNING LIGHT

  1. Disconnect the skid control ECU connector.

  1. Turn the ignition switch to ON.

  1. Check that the ABS warning light comes on.

    OK:
    The ABS warning light comes on.


NG
Go to step 3
OK

REPLACE BRAKE ACTUATOR ASSEMBLY (LandCruiser RM0000034UX02TX.html)

3.READ VALUE USING INTELLIGENT TESTER (ABS 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
ABS Warning Light
ABS warning light / ON or OFF
OFF
-

  1. When performing the ABS Warning Light Active Test, check ABS Warning Light in the Data List (LandCruiser RM000000XHW0GJX.html).


ABS/VSC/TRC
Tester Display
Test Part
Control Range
Diagnostic Note
ABS Warning Light
ABS 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)