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Home >> Toyota >> 2009 >> RAV4 Base, 2.5 F, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Vehicle Stability Control System >> AUTO LSD Indicator Light does not Come ON >> Inspection Procedure

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

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

    A : Go to Next Step 

  2. READ VALUE USING TECHSTREAM (AUTO LSD SWITCH) 
    1. Check the Data List for proper functioning of the AUTO LSD switch (See DATA LIST / ACTIVE TEST ).

    ABS/VSC/TRAC: 

    ABS/VSC/TRAC REFERENCE CHART

    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    Auto LSD Switch Traction control switch (VSC OFF switch) / ON or OFF ON: VSC OFF switch is on
    OFF: VSC OFF switch is off    		 -

    OK: ON (VSC OFF switch is on) appears on the screen. 

    NG : Go to step  5

    OK : Go to Next Step 

  3. PERFORM ACTIVE TEST USING TECHSTREAM (AUTO LSD INDICATOR LIGHT) 
    1. Connect the Techstream to the DLC3.
    2. Start the engine.
    3. Select the Active Test mode on the Techstream (See DATA LIST / ACTIVE TEST ).

    ABS/VSC/TRAC: 

    ABS/VSC/TRAC REFERENCE CHART

    Tester Display Test Part Control Range Diagnostic Note
    Auto LSD Indicator Light AUTO LSD indicator light Indicator light ON/OFF Observe the combination meter.

    OK: The AUTO LSD indicator light turns ON and OFF. 

    NG : REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL )

    OK : Go to Next Step 

  4. 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 )

  5. 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 1: Inspecting Traction Control Switch (VSC OFF Switch)
    G06003362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : Go to Next Step 

  6. 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 2: Identifying Skid Control ECU And VSC OFF Switch Connector Terminals
    G06003363Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL )

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