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Inspection Procedure

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (see INITIALIZATION ).
  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 IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED 
    1. Check the skid control ECU connector's connection.

      OK: 

      The connector is securely connected. 

    NG: CONNECT CONNECTOR TO ECU CORRECTLY 

    OK: Go to next step 

  4. INSPECT BATTERY 
    1. Check the battery voltage.

      Voltage: 

      11 to 14 V 

    NG: INSPECT CHARGING SYSTEM 

    OK: Go to next step 

  5. INSPECT VSC OFF SWITCH 
    1. Remove the VSC OFF switch.
    2. Disconnect the VSC OFF switch connector.
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Condition Specified Condition
      3 - 4 Pressed Below 1 Ω
      3 - 4 Not pressed 10 kΩ or higher
    Fig 1: Identifying VSC OFF Switch Connector
    G05297122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE VSC OFF SWITCH 

    OK: Go to next step 

  6. INSPECT VSC OFF SWITCH (GROUND TERMINAL) 
    1. Disconnect the VSC OFF switch connector.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      K43-4 - Body ground Below 1 Ω
    Fig 2: Identifying VSC OFF Switch Connector (Ground Terminal)
    G05297123Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) 

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO VSC OFF SWITCH) 
    1. Disconnect the skid control ECU connector and the VSC OFF switch connector.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester connection Specified condition
      A15-36 (CSW) - K43-3 Below 1 Ω
      A15-36 (CSW) - Body ground 10 kΩ or higher
    Fig 3: Identifying Skid Control ECU And VSC OFF Switch Connector Terminals
    G05297124Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

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

      HINT:

      If the 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: REPLACE COMBINATION METER ASSEMBLY 

    OK: REPLACE SKID CONTROL ECU 

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