ELECTRONICALLY CONTROLLED BRAKE SYSTEM > Brake Warning Light does not Come ON

for Preparation Click here


WIRING DIAGRAM

(Click here).

INSPECTION PROCEDURE

NOTICE:
When replace the skid control ECU, perform initialization of linear solenoid valve and calibration (Click here).

1.INSPECT CAN COMMUNICATION SYSTEM

  1. Check if the CAN communication system DTC is output (Click here for LHD, for Click here RHD).

    Result:

    Condition
    		Proceed To
    DTC is not output
    		A
    DTC is output
    		B



B
REPAIR CAN COMMUNICATION SYSTEM
A


2.INSPECT MULTIPLEX COMMUNICATION SYSTEM

  1. Check if the multiplex communication system DTC is output (Click here).

    Result:

    Condition
    		Proceed To
    DTC is not output
    		A
    DTC is output
    		B



B
REPAIR MULTIPLEX COMMUNICATION SYSTEM
A


3.INSPECT BRAKE WARNING LIGHT

  1. Disconnect the skid control ECU connector.

  1. Turn the ignition switch on.

  1. Check if the BRAKE warning light comes on.

    OK:
    Brake warning light comes on.

    HINT:
    If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part (Click here).



OK
REPLACE SKID CONTROL ECU
NG


4.INSPECT COMBINATION METER ASSEMBLY

  1. Check the combination meter assembly (Click here).

    HINT:
    If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step (Click here).



NG
REPLACE COMBINATION METER ASSEMBLY
OK

END