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Home >> Toyota >> 2009 >> Matrix Base, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Theft Deterrent & Keyless Entry >> Theft Deterrent System >> Unlock Warning Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH ASSEMBLY) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream main switch on.
    4. Select the item below in the Data List and then read the display on the Techstream.

      Security 

      ITEM/RANGE REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Key unlock warning switch Unlock warning switch signal / ON or OFF ON: Key is inserted into ignition key cylinder
      OFF: Key is removed from ignition key cylinder      		 -

      OK: When the key is in the ignition key cylinder, "ON" appears on the screen  .

      NG: Go to step   2 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 

  2. INSPECT UNLOCK WARNING SWITCH ASSEMBLY 
    1. Remove the unlock warning switch assembly (See REMOVAL ).
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      E6-1 - E6-2 Free (Key removed) 10 kΩ or higher
      E6-1 - E6-2 Pushed (Key set) Below 1 Ω
      Fig 1: Removing Unlock Warning Switch Assembly
      G06036538Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY  (See REMOVAL )

      OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - BODY GROUND) 
    1. Disconnect the E6 unlock warning switch assembly connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      E6-2 - Body ground Always Below 1 Ω
      Fig 2: Identifying E6 Unlock Warning Switch Assembly Connector Terminal
      G06036539Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  4. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - THEFT WARNING ECU ASSEMBLY) 
    1. Disconnect the E72 theft warning ECU assembly connectors.
      Fig 3: Identifying E72 Theft Warning ECU Assembly Connector Terminal
      G06036540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      E6-1 - E72-7 (KSW) Always Below 1 Ω

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE THEFT WARNING ECU ASSEMBLY (See  THEFT WARNING ECU  ) 

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