LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> GS 430 >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Vehicle Stability Control System >> Brake Warning Light does not Come ON >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

NOTE: When replacing the ABS and TRACTION actuator assembly, perform zero point calibration (see CALIBRATION ).
  1. INSPECT CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (see DIAGNOSIS SYSTEM ).

    Result 

    RESULT CHART

    Display (DTC Output) Proceed To
    DTC is not output A
    DTC is output B

    B: REPAIR CAN COMMUNICATION SYSTEM 

    A: Go to next step 

  2. INSPECT MULTIPLEX COMMUNICATION SYSTEM 
    1. Check if the multiplex communication system DTC is output (see DTC CHECK / CLEAR ).

    Result 

    RESULT CHART

    Display (DTC Output) Proceed To
    DTC is not output A
    DTC is output B

    B: REPAIR MULTIPLEX COMMUNICATION SYSTEM 

    A: Go to next step 

  3. INSPECT BRAKE WARNING LIGHT 
    1. Disconnect the skid control ECU connector.
    2. Turn the engine switch on (IG).
    3. Check that 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 (see PROBLEM SYMPTOMS TABLE ).

    NG: Go to step 4 

    OK: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

  4. INSPECT COMBINATION METER ASSEMBLY 
    1. Check the combination meter assembly (see INITIALIZATION ).

      HINT:

      If troubleshooting has been carried out according to the problem symptoms table, refer back to the table and proceed to the next step (see PROBLEM SYMPTOMS TABLE ).

    NG: REPLACE COMBINATION METER ASSEMBLY 

    OK: END