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Home >> Toyota >> 2007 >> Avalon Limited >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Smart Key System >> Lock Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE ON INTELLIGENT TESTER 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the engine switch on (IG).
    3. Following the display on the tester, select "DATA LIST".

    SMART KEY (Certification ECU): 

    SMART KEY FUNCTION REFERENCE

    Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
    D TRIGGER SW Lock switch / ON or OFF ON: Lock switch is pushed
    OFF: Lock switch is not pushed    		 -
    P TRIGGER SW Lock switch / ON or OFF ON: Lock switch is pushed
    OFF: Lock switch is not pushed    		 -
    DR TRIGGER Lock switch rear LH / ON or OFF ON: Lock switch is pushed
    OFF: Lock switch is not pushed    		 -
    DP TRIGGER Lock switch rear RH / ON or OFF ON: Lock switch is pushed
    OFF: Lock switch is not pushed    		 -

    OK: 

    "ON" (lock switch is pressed) appears on the tester screen. 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  . 

    NG: Go to Next Step 

  2. INSPECT LOCK SWITCH 
    1. Remove the outside handle.
    2. Disconnect the connectors.
    3. Measure the resistance according to the value(s) in the table below.

    Resistance 

    RESISTANCE REFERENCE CHART

    Tester Connection Condition Specified Condition
    W2-1 (TRG-) - W2-3 (TRG+) Lock switch not pushed → Pushed 10 kΩ or higher → Below 1 Ω
    V2-1 (TRG-) - V2-3 (TRG+)
    Y2-1 (TRG-) - Y2-3 (TRG+)
    X2-1 (TRG-) - X2-3 (TRG+)
    Fig 1: Inspecting Lock Switch
    G05006080Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE OUTSIDE HANDLE 

    OK: Go to Next Step 

  3. CHECK WIRE HARNESS (CERTIFICATION ECU - LOCK SWITCH) 
    1. Disconnect the D39 and D40 ECU connectors.
      Fig 2: Identifying D39 And D40 ECU Connectors
      G05006081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

    Resistance 

    RESISTANCE REFERENCE CHART

    Tester Connection Condition Specified Condition
    D39-3 (TSW1) - W2-3 (TRG+) Always Below 1 Ω
    D39-4 (TSW2) - V2-3 (TRG+) Always Below 1 Ω
    D40-25 (TSW3) - Y2-3 (TRG+) Always Below 1 Ω
    D40-26 (TSW4) - X2-3 (TRG+) Always Below 1 Ω
    D39-3 (TSW1) - Body ground Always 10 kΩ or higher
    D39-4 (TSW2) - Body ground Always 10 kΩ or higher
    D40-25 (TSW3) - Body ground Always 10 kΩ or higher
    D40-26 (TSW4) - Body ground Always 10 kΩ or higher
    Fig 3: Identifying Lock Switch Connector Terminals
    G05006082Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  4. CHECK WIRE HARNESS (DOOR OSCILLATOR - LOCK SWITCH) 
    1. Disconnect the door oscillator connector.
      Fig 4: Identifying Door Oscillator Connector
      G05006083Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Condition Specified Condition
      W1-9 (TRG-) - W2-1 (TRG-) Always Below 1 Ω
      V1-9 (TRG-) - V2-1 (TRG-) Always Below 1 Ω
      Y1-9 (TRG-) - Y2-1 (TRG-) Always Below 1 Ω
      X1-9 (TRG-) - X2-1 (TRG-) Always Below 1 Ω
      W1-9 (TRG-) - Body ground Always 10 kΩ or higher
      V1-9 (TRG-) - Body ground Always 10 kΩ or higher
      Y1-9 (TRG-) - Body ground Always 10 kΩ or higher
      X1-9 (TRG-) - Body ground Always 10 kΩ or higher
      Fig 5: Identifying Lock Switch Connector Terminals
      G05006084Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  . 

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