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Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE OF TECHSTREAM (DOOR COURTESY LIGHT SWITCH) 
    1. Operate the Techstream according to the display and select the "DATA LIST" or "Data List".
      1. Techstream

        Main Body 

        MAIN BODY - TECHSTREAM DATA LIST CHART

        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        D Dor Cty SW Front door courtesy light switch LH signal / ON or OFF ON: Front door courtesy light switch LH ON
        OFF: Front door courtesy light switch LH OFF        		 -
        P Dor Cty SW Front door courtesy light switch RH signal / ON or OFF ON: Front door courtesy light switch RH ON
        OFF: Front door courtesy light switch RH OFF        		 -
        RL Dor Cty SW Rear door courtesy light switch LH signal / ON or OFF ON: Rear door courtesy light switch LH ON
        OFF: Rear door courtesy light switch LH OFF        		 -
        RR Dor Cty SW Rear door courtesy light switch RH signal / ON or OFF ON: Rear door courtesy light switch RH ON
        OFF: Rear door courtesy light switch RH OFF        		 -

        Result 

        RESULT CHART

        Result Proceed to
        OK A
        NG (Front door courtesy light switch LH does not operate) B
        NG (Front door courtesy light switch RH does not operate) C
        NG (Rear door courtesy light switch LH does not operate) D
        NG (Rear door courtesy light switch RH does not operate) E

    B: Go to step 2 

    C: Go to step   4

    D:  Go to step  6

    E: Go to step   8

    A: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

  2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH 
    1. Remove the front door courtesy light switch LH (see REMOVAL  ).
      Fig 1: Identifying Front Door Courtesy Light Switch - LH
      G05160789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      FRONT DOOR COURTESY LIGHT SWITCH LH

      Tester Connection Switch Condition Specified Condition
      1 - Body ground Not pushed Below 1 Ω
      Pushed 10 kΩ or higher

    NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH LH  (see REMOVAL  )

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH LH MAIN BODY ECU) 
    1. Disconnect the P5 switch connector.
    2. Disconnect the J4 ECU connector.
      Fig 2: Identifying Front Door Courtesy Light Switch LH And Main Body ECU Connector Terminals
      G05160790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      FRONT DOOR COURTESY LIGHT SWITCH LH MAIN BODY ECU

      Tester Connection Condition Specified Condition
      P5-1 - J4-24 (DCTY) Always Below 1 Ω
      P5-1 - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU 

  4. INSPECT FRONT DOOR COURTESY LIGHT SWITCH RH 
    1. Remove the front door courtesy light switch RH (see REMOVAL  ).
      Fig 3: Identifying Front Door Courtesy Light Switch RH
      G05160791Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      FRONT DOOR COURTESY LIGHT SWITCH RH

      Tester Connection Switch Condition Specified Condition
      1. Body ground Not pushed Below 1 Ω
      Pushed 10 kΩ or higher

    NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH RH  (See INSPECTION PROCEDURE )

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH RH MAIN BODY ECU) 
    1. Disconnect the Q5 switch connector.
    2. Disconnect the J3 ECU connector.
      Fig 4: Identifying Front Door Courtesy Light Switch RH And Main Body ECU Connector Terminals
      G05160792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      FRONT DOOR COURTESY LIGHT SWITCH RH MAIN BODY ECU

      Tester Connection Condition Specified Condition
      Q5-1 - J3-21 (PCTY) Always Below 1 Ω
      Q5-1 - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU 

  6. INSPECT REAR DOOR COURTESY LIGHT SWITCH LH 
    1. Remove the rear door courtesy light switch LH (see REMOVAL  ).
      Fig 5: Identifying Rear Door Courtesy Light Switch - LH
      G05160793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      REAR DOOR COURTESY LIGHT SWITCH LH

      Tester Connection Switch Condition Specified Condition
      1 - Body ground Not pushed Below 1 Ω
      Pushed 10 kΩ or higher

    NG: REPLACE REAR DOOR COURTESY LIGHT SWITCH LH  (see REMOVAL  )

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH LH MAIN BODY ECU) 
    1. Disconnect the P6 switch connector.
      Fig 6: Identifying Rear Door Courtesy Light Switch LH And Main Body ECU Connector Terminals
      G05160794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the DC ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      REAR DOOR COURTESY LIGHT SWITCH LH MAIN BODY ECU

      Tester Connection Condition Specified Condition
      P6-1 - DC-2 (LCTY) Always Below 1 Ω
      P6-1 - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU 

  8. INSPECT REAR DOOR COURTESY LIGHT SWITCH RH 
    1. Remove the rear door courtesy light switch RH (see REMOVAL  ).
      Fig 7: Identifying Rear Door Courtesy Light Switch - RH
      G05160795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      REAR DOOR COURTESY LIGHT SWITCH RH

      Tester Connection Switch Condition Specified Condition
      1 - Body ground Not pushed Below 1 Ω
      Pushed 10 kΩ or higher

    NG: REPLACE REAR DOOR COURTESY LIGHT SWITCH RH  (see REMOVAL  )

    OK: Go to next step 

  9. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH RH MAIN BODY ECU) 
    1. Disconnect the Q6 switch connector.
    2. Disconnect the J3 ECU connector.
      Fig 8: Identifying Rear Door Courtesy Light Switch RH And Main Body ECU Connector Terminals
      G05160796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      REAR DOOR COURTESY LIGHT SWITCH RH MAIN BODY ECU

      Tester Connection Condition Specified Condition
      Q6-1 - J3-25 (RRCY) Always Below 1 Ω
      Q6-1 - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE MAIN BODY ECU 

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