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Inspection Procedure

NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION ).
  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if a CAN communication system DTC is output (See HOW TO PROCEED WITH TROUBLESHOOTING ).

    Result 

    RESULT CHART

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

    OK: The connector is securely connected. 

    B : REPAIR CAN COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

    A : Go to Next Step 

  2. CHECK SKID CONTROL ECU CONNECTOR 
    1. Check if the skid control ECU connector is securely connected.

    OK: The connector is securely connected. 

    NG : CONNECT CONNECTOR CORRECTLY 

    OK : Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BODY GROUND) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    Tester Connection Switch Condition Specified Condition
    A19-30 (CSW) - Body ground VSC OFF switch is not pushed 10 kΩ or higher
    VSC OFF switch is pushed Below 1 Ω

    OK : Go to step  6

    Fig 1: Identifying Skid Control ECU Connector Terminals
    G06003373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : Go to Next Step 

  4. INSPECT TRACTION CONTROL SWITCH (VSC OFF SWITCH) 
    1. Remove the VSC OFF switch (See VSC OFF SWITCH ).
    2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    Tester Connection Switch Condition Specified Condition
    6 - 9 Not pushed 10 kΩ or higher
    Pushed Below 1 Ω

    NG : REPLACE TRACTION CONTROL SWITCH (VSC OFF SWITCH) 

    Fig 2: Inspecting Traction Control Switch (VSC OFF Switch)
    G06003362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (VSC OFF SWITCH - SKID CONTROL ECU/BODY GROUND) 
    1. Disconnect the skid control ECU connector.
    2. Disconnect the VSC OFF switch connector.
    3. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    Tester Connection Condition Specified Condition
    A19-30 (CSW) - E83-9 Always Below 1 Ω
    A19-30 (CSW) - Body ground Always 10 kΩ or higher
    E83-6 - Body ground Always Below 1 Ω

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 3: Identifying Skid Control ECU And VSC OFF Switch Connector Terminals
    G06003363Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : Go to Next Step 

  6. INSPECT COMBINATION METER ASSEMBLY 
    1. Inspect the combination meter (See HOW TO PROCEED WITH TROUBLESHOOTING ).

    NG : REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL )

    OK : REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL )

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