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Inspection Procedure

  1. READ VALUE OF TECHSTREAM (ENGINE SWITCH) 
    1. Use the Data List to check if the engine switch is functioning properly.

      Main Body 

      TESTER DISPLAY REFERENCE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Start Switch 1 Start Switch 1/ON or OFF ON: Engine switch on (IG)
      OFF: Engine switch off      		 -
      Start Switch 2 Start Switch 2/ON or OFF ON: Engine switch on (IG)
      OFF: Engine switch off      		 -

      OK: ON appears on the screen. 

    NG: Go to step  3

    OK: Go to Next Step 

  2. CHECK ENGINE SWITCH (SWITCH CONDITION) 
    1. Ensure the key is inside the cabin.
    2. Check that the power source mode changes as shown below each time the engine switch is pushed.

      OK: off → on (ACC) → on (IG) → off 

    NG: GO TO POWER SOURCE MODE DOES NOT CHANGE 

    OK: SYSTEM IS OK 

  3. INSPECT ENGINE SWITCH 
    1. Remove the engine switch (see REMOVAL  ).
      Fig 1: Identifying Engine Switch Connector
      G04943844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      7 (SS1) - 5 (GND) Pushed Below 1 Ω
      2 (SS2) - 5 (GND) Pushed Below 1 Ω
      7 (SS1) - 5 (GND) Not pushed 10 kΩ or higher
      2 (SS2) - 5 (GND) Not pushed 10 kΩ or higher

    NG: REPLACE ENGINE SWITCH  (See REMOVAL  )

    OK: Go to Next Step 

  4. CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND) 
    Fig 2: Identifying L36 Engine Switch And L13 Main Body ECU Connectors
    G04943845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L36 engine switch connector.
    2. Disconnect the L13 main body ECU connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      L36-7 (SS1) - L13-17 (SSW1) Always Below 1 Ω
      L36-2 (SS2) - L13-16 (SSW2) Always Below 1 Ω
      L36-5 (GND) - Body ground Always Below 1 Ω
      L36-7 (SS1) or L13-17 (SSW1) - Body ground Always 10 kΩ or higher
      L36-2 (SS2) or L13-16 (SSW2) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU 

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